Greetings from the UK. I totally endorse your views on the country of my birth and Land Rover in particular. Thanks for taking an interest whilst keeping a sense of humour 👍
@@davidnobular9220I'm a lefty from the other side of the equator, and I still love his humor and sarcasm. Plus I also see the deficiencies of EVs and will never likely own one
So good. Not an enginger but worked in engineering all my long life but i did major in physics and maths so close to an enginger. Last 8 years as a business analyst, so deep diving into this sort of thing daily. Love your clean analysis. Keep it up.
I once went to a photography class run by a local photography store, and they asked what printers we each had. I was the only one that had a particular model, and they said it was crap. Guess who sold it to me...I wasn't especially pleased they informed me, no.
That surprised me. I've only ever heard engineers, mechanics, and a handful of railfans describe dynamic brakes properly. It's not the kind of thing laymen tend to be interested in, naturally.
Great video. I had always wondered why the 'Diesel-Electric' type approach hadn't been widely implemented because I had also assumed the efficiency savings were obvious. Thanks for setting the record straight as I hadn't considered the more significant energy losses in the system. Obvious really, but easily overlooked. Keep up the great content 👍
Hi John, wife number 5 punched me in the arm when you put so much credit on Ozzy. She told me to tell you that the real hero there is Ozzy’s wife Shazza. I reluctantly agreed, anyone who not only can get Ozzy onstage but also turn their lifestyle into a business is pretty switched on. Other than that, I received no other punches. Good episode.
Just my two cents. I own a QQ e-POWER since the end of march 2023. I've also drove the MHEV version of the same vehicle (so lighter and much less powerful) for more than 3 weeks during the summer. My average fuel consumption with the MHEV version was more than 30% higher of the heavier, much powerful e-POWER version. Note that on my e-POWER I have all season tyres (less fuel efficient) while on the MHEV car I had summer tyres (more fuel efficient). With the stock summer tyres on my e-POWER I guess the delta would have been higher. This is the difference between talking about something and testing something, IMHO.
Why are so many repeating what you said and arguing the opposite. Really does this spirit apply across society ? I sincerely hope not. Loving your programme and how you breakdown the information. For someone who love physics but can’t seat through the lectures cos the professors knock me dead everytime and left me clueless you’re a time/lifesaver. I pray you keep that beacon for rationale thinking lit and bright. Cheers
Honda's first hybrid electric vehicle was marketed as the Honda Insight in the United States. People who bought the 840kg highly aerodynamic two-passenger car were looking for high gas mileage and they delivered. However, over time the batteries died and were very expensive to replace. The drivers found they got better gas mileage as the batteries died, even though their driving habits did not! I'm not sure how many bothered to replace the batteries, but I'm sure they were few.
I like these videos. It's like looking in a mirror and listing to a conversation with my son and his cognitive delay. He gets so convinced his reasoning is right that he can't see where his thoughts are wrong even when I physically demonstrate how something works.
544 comments already, so I doubt you'll get to see this one, but I just wanted to say thanks. Of all the videos you put out these sort are by far my favorite, I find them not only a good laugh but really really educational. Thanks again.
It is SO refreshing to experience both a clear and robust scientific argument. In a world full of FUD and science illiteracy, John is a breath of fresh air.
Dear John, an excellent video once again. Audi tried to make a range extender A1 e-tron a long, long time ago. Unlike the Chevrolet / Holden Volt which has an internal combustion elevated speed operation strategy ('screaming' option) to prepare the otherwise effective 'historic' BEV with a range extender engine for major mountain climbs, the Audi found the tiny rotoary engine was in 'scream' mode for rather extended periods (ie, it rarely shut up) due to the modest battery pack in the 'concept'. The project was abandoned, almost as it prepared to go to market because..... it didn't work on any level. Nissan e-power was origianlly supposed to have a much bigger battery, to operate much as the Chevrolet / Holden Volt did - the internal combustion engine would rarely if ever switch on and the traction battery could be externally recharged. Oh dear.
It just makes sense. There is no free ride with power, it has to be generated somehow. My hybrid gives me about twenty-five more mpg than my old turbo, with pretty similar performance. I lose the turbo and gain an electrical system bolted onto a simpler engine. Overall it is more complicated. But I think I understood what I was doing when I bought the new car and I understand how the hybrid system works, I think. Weight and aerodynamics play a big part, as does the price and security of fuel sources, but I hope for the best. As for the Nissan, I can’t understand adding a complicated electrical system to a petrol engine for practically no real gain, I did look briefly at this car and came to the conclusion that the power source was silly.
I have been watching this channel for several months now and I have come to a conclusion. John Cadogan has a wonderful turn of phrase, and more power to him.
My formal science and math education finished when I was 16, probably like many here. I’ve picked up some along the way and seem to have retained quite a lot of the knowledge gained at school. The danger comes when someone thinks they understand a subject but in reality they have just scratched the surface. Personally unless I’m in my own area of expertise, I keep my mouth shut.
Interesting how none of the "but trains are diesel-electric therefore you're wrong" comments mention WHY trains use diesel-electric drive. It's not because of efficiency, although the engineers who have been working on them for the past 75 years have made them very efficient. The real reason is torque. In particular, starting torque. Pulling 100k tonnes, uphill, from a standstill takes a massive amount of torque. The kind of torque that will eat a clutch up in no time at all. The kind of torque that is not possible to produce with a reasonably sized hydraulic drive. But it is the kind of torque that electric traction drives can produce in massive quantities using really small electric motors, relatively-speaking.
Thanks for the honest feedback John. This really explains why my previous traditional hybrid saved a lot of fuel. It was a lot lighter than this Nissan. Do you think the Honda Civic e:HEV and 2023 Toyota Prius Prime wil do any better at this concept, or are any fuel savings just because of aerodynamics and very efficient engines? P.S. English is not my native language, but I do apologise for getting "video's" wrong by using the Dutch way of spelling it.
@@user-xu5vl5th9n The Nissan Qashqai E-Power weighs a whopping 1587 kg in it's base trim here. My previous car was a much lighter hybrid, weighing more than 400 kg less than that. My current ICE car actually weighs a little more than the hybrid, but it's a little bigger as well. Fuel economy was about 16 to 20 km per liter depending on the conditions and speed. My current ICE gets only 12-16 km from the same liter of fuel in similar conditions. Not all hybrids are as big and heavy as these silly Nissan cars. You really don't need a huge battery or a powerful electric engine to make hybrids work.
In many ways you're highlighting the difference between marketing perception and the reality.. The locomotive's 'apparent' efficiency is what's been sold along with a bunch of other lies about these planet saving cars people can stump up and buy.. This and the last vid have been priceless dude... keep it up, in all ways. ;)
I love the way people bang on about keeping the engine in the best part of its efficiency curve (kind of why gearboxes are a thing) while completely missing that electric motors, batterys and so on all have similar curves and won't be in theirs for the majority of the time. The engine is also not some special, optimised thing - its just an old one they happened to have knocking about. If it was some one off item that could run at ship engine efficiency I could maybe see a point but even then this would be a very heavy and complex way to get similar efficiency to a simple hybrid and still far worse than a diesel hybrid.
Thanks for your entertaining explanations John. I'm a pensioner now but have spent a career doing mechanical, electrical and electronic engineering (and have the bits of paper) and I love your responses to the ignorant sofa "engineers" with the proper hard sums. Keep up the good work! 😀
Diesel locomotives prime mover does not operate at a constant revs all the time . EMD built loco's have 8 speed settings on the throttle notch 1 to notch 8. They still accelerates like a vehicle that has an auto or manual trans but does not have any trans . EMD experimented with a constant speed prime mover but found that an engine with manual throttle control used less fuel . Max engine revs are under 1000 rpm but they sound like 8000rpm . The current EMD 710 series engines have 11.6 litres per cylinder .
None of them ever mention torque. D/E power plants on trains won because you simply cannot reasonably produce enough torque to get the train moving with a mechanical or hydraulic transmission. Only electric motors can reliably get a train moving and with enough control to manage slippage. And it's not like they didn't try. I can remember quite a few diesel-mechanical drives being tested back in the day. And they were being tested BECAUSE they promised better efficiency than diesel-electric. Some even became successful as shunters for a while.
London transport runs a fleet of 300 diesel electric buses. I believe the diesel runs at a constant rpm (1500?) which feeds power into a set of batteries which in turn operates the traction motor. It is said that this reduces the CO2 by 40 percent but it also reduces the nox levels because high loads /high revs which leads to high cylinder temperatures. This system seems to work very well and allows good acceleration and braking. However this is a specialist application and very expensive ( quarter of a million Pounds each) As you say the Nissan system is dung and no way forward. Brilliant videos keep it going
@@SolAce-nw2hf If they don't like the sound, they just need to turn the radio louder ;-) People are just used to the sound and feel of gears changing. It seems sporty and fun. This forces the auto makers to fudge a simulation of gears changing into the logic of the CVT, which I find very annoying. I have been driving a Honda CRV for some time and I find it very comforting that there is no hunting for the correct gear when the demand changes, and that the tach almost always sits around the optimum RPM range without me having to do anything.
@@edgilchrist6374 I have owned a CVT car as well. It did not bother me after getting used to it and also learning not to put my foot down all the way without any good reason. But I do get how weird it must sound when doing a test drive. Maybe I will try the new Honda Civic e:HEV myself soon. They may have gotten it right.
John, please consider, instead of scrunching up the A4 to throw, could you fold it into paper airplanes and toss. I know you are capable of chewing gum and tapping your foot simultaneously, so it would just be something different, unusual, fresh and amusing. Cheers. Make Australia More Aerodynamic.
If John folded the paper into aeroplanes, he might get them in the bin that's not there, he really needs a second camera facing the corner and a bin 😆😆😆
Which Car (What Car?) hybrid fuel tests. Roughly. City 100 mpg, country 65 mpg, motorway 45 mpg. I was surprised by the low motorway figure. My direct drive diesel does 55 mpg in country driving, and 65 mpg on the motorway. R
The German Railway class 218 (BR 218) is one of the few diesel hydraulic (mechanical) locomotives in regular use. They're really built like a 4x4 vehicle in a lot of ways - diesel engine, transmission (2 speed maybe?) transfer case and prop shafts going to each bogie.
How old are they, what is their reliability/ reputation? In New Zealand we had Vulcan Railcars that were straight diesel with a pre-selector gearbox, carried 88 passengers and sounded just great... worked mainline services from 1940 until 1978.... and some "retired" ones are still being used on private museum lines...
@@JohnSmith-yv6eq - they're mainline passenger service (usually) built in the 70s. They use them to haul passenger traffic in the few places left that aren't electrified.
You always notice that John knows what he’s talking about, and I love listening to him, it’s like my lecturer on my tablet 😂😂. Another thing is people who don’t know what they’re talking about usually repeat what John has already said in previous uploads e.g diesel locomotives 😂😂
When talking about efficiency, if you use electric only, because the Ice transmission is still connected, you would have to add the associated loss on as well, because it will be driving the transmission back to the clutch that separates the ICE!
It's an old problem. An electric drive train does have some advantages and one significant disadvantage. They were tried in steam powered battleships at the end of world war one and between the wars. The advantages were not having gearing and long propeller shafts running through the ship (which if damaged can compromise watertight compartments), the drawback was always a small but significant loss of efficiency, so you get less range and speed from the same engines and boilers.
E-Power is not just about the improved efficiency. It gives much better performance than other hybrid systems, while being much more pleasant to drive in traffic due to the EV style 1 pedal mode. Think of it as buying the "big engine, supercharged" version of the car, but getting better than the base model fuel economy. I bought an E-Power car because of how entertaining it is to drive, but it also gets better fuel economy than other equivalent cars - even on the freeway. Given that my day job involves designing electric propulsion systems, I had the same expectation of double mechanicl/electrical conversion stages resulting in poor highway efficiency, but it still matches or beats similar non hybrid vehicles (around 5L/100km at 110km/h). Around town at low speeds it can do a genuine 3L/100km, which is way better than similar vehicles. I drove a Toyota Aygo around Europe, which is a much smaller, lighter 1L 3 cylinder ICE car with stop start and a manual gearbox. It averaged 5.1L/100km around town and on the highway at 100km/h - but was painfully slow and couldn't maintain speed up hills. Its traction control system was a bit of a waste since it was impossible to get it to kick in even in the wet. Funnily enough, in my testing, the tyres make the biggest difference to the fuel economy. Going from the original Eco tyres to "normal" tyres used 15% more fuel.
Maybe some people are getting confused about the mazda mx3- r-ev rotary engine work, where they said running at a constant rpm was the most efficient use of an otherwise inefficient ice engine.
Didn't they develop a system for keeping the motor in the optimal power and torque band for the given road speed years ago by using a variable arrangement of gears?
@JohnSmith-yv6eq Nissan have tried that and were demonstrated to be a bit shit at it. I'm thinking of a selection of gear ratios that can be the best compromise. You could have the operator select them or have it all a computer controlled system for transmitting drive to the wheels. Put them all in a case or a 'box' to protect them from the elements. Then you could have the option of a manual gear box or automatic transmission if you will. It could catch on?
LMAO, I love your conclusion as you are describing the benefit of e-power as being basically identical to the benefit of a CVT … So is it really surprising that the e-Power model isn’t significantly more efficient than the CVT model?
Today I noticed something odd on a Toyota. The emblem was highlighted around the edges in Blue. When I asked the driver they said that’s because it’s Highbred, it was a SA Government car. So Question are Highbred cars being marked in this way.
Dear John, an excellent video once again. Das Audi tried to make a range extender A1 e-tron a long, long time ago. Unlike the Chevrolet / Holden Volt which has an internal combustion elevated speed operation strategy ('screaming' option) to prepare the otherwise effective 'historic' BEV with a range extender engine for major mountain climbs, the Audi Kommand found the tiny Wankel engine was in 'scream' mode for rather extended periods (ie, it rarely shut up) due to the modest battery pack in the 'concept'. The project was abandoned, almost as it prepared to go to market because..... it didn't work on any level. Nissan e-power was origianlly supposed to have a much bigger battery, to operate much as the Chevrolet / Holden Volt did - the internal combustion engine would rarely if ever switch on and the traction battery could be externally recharged. I guess something 'happened' at Nissan Towers HQ to create the product which is now on sale.
I love your shirt. Every time I have seen an outlet turned upside down. It was like scraping your nails on a chalkboard to me. Well, apparently, now I am wrong. The outlets are supposed to be turned with the ground lug in the up position, it’s just driving me crazy, even though they do have a point.
Dont know if its any more efficient but they did make a car with a transmission like this almost a 100 years ago and there is a whole show on this on Jay Leno's Garage. It was a magnetic flywheel that spun around a few coils which when engaged separately was like gears in a transmission. There was 4 or 5 gears in the transmission and looked like it was cool.
Hi john, I love your videos. As an engineer like you we like facts and figures. I hate to slightly argue with you, and I have no figures to back my suspicion up. But I suspect the charging and discharging efficiency of lithium ion batteries is not as efficient as you suggest. After all charging is a chemical reaction. To my knowledge these batteries are temperature controlled. This control will have a serious effect on efficiency from 2 points of view. If the battery heats during charging this is lost energy. If you use a cooling system to reduce the temperature that energy has to come from somewhere. As i have stated I would have to do the research to prove my suspicion. I did some work on Lead Acid batteries at university and the charging rate has a big effect on efficiency. Thanks John for making your lovely videos so hilarious.
Nice one John, that presentation may have vindicated me somewhat. With some people I know/work with. After over 40 yrs working on and with ICE's and battery powered vehicles when the Toyota Prius was launched I was seriously impressed and over the years have always argued that hybrid is the way to go until hydrogen becomes realistic.
@@CNile-se9xw CVT are junk... they cost more in maintenance and are less efficient than a well designed modern automatic when driven harder than a grandma would drive it.
@@javic1979 No argument from me. Maybe we've been lucky, in that our 2011 MB B200's CVT hasn't had any issues, but I drive like a grandma because there's no pleasurable feedback from putting the foot down. The exhaust note is monotone/monotonous,& only that changes in volume under acceleration.
15 minutes of video, 30 of response. Genius 😂😂 So this car is the gift that keeps on giving.The French government is the largest single shareholder in Renault group, owner of Nissan. It received subsidies from the government to keep production in the UK. The mirror image of Sir Ratcliffe building the Ineos in France with large amounts of Austrian and German engineering 🤪
I saw a program on the UK TV where they compared the emissions of a Jeep, I think it was, Hybrid and the same petrol version, the petrol made less dangerous gasses than the hybrid because of the constant stop start of the hybrid engine.
Today in Sheepshagistan: LDV announced a $23.000 drop in price for the only EV ute being sold in NZ. I wonder what the early adopters who paid that $23k premium earlier this year are feeling about brand loyalty.... since LDV are discontinuing this EV-only model in NZ????
the cvt in the murano was supposed to keep the engine in the sweet spot too, history shows the drive train failed early costing way more than any would be gains in fuel savings. fyi, trains are more efficient due to the lower friction of steel on steel wheels/tracks,
Whilst there is a large population of diesel electric locomotive extant with DC motors, modern designs now use AC motors. Also a bit of railway terminology pedantry if I may. In locomotives the generic term used for braking using the traction motors is dynamic braking and there are two categories of this. Rheostatic braking which uses onboard resistance grids to generate heat as you describe and regenerative braking (on electric locomotives) where the braking energy is returned to the electrical supply.
John the only place that uses locomotives with diesel drives are those used in the sugar industry for the transportation of cane. Most are 0-6-0 wheel configuration. Too small to consider diesel-electric as a vaiable drive system. Some of the larger locomotives are diesel-hydaulic with engine and axles joined thru a hydraulic torque converter.
Interested to hear what your thoughts are on Edison Motors truck building company with hybrid trucks on the same principle, except with a far larger battery system. What they have done and claim appears to be brilliant and in most use cases the system will be an efficiency improvement compared to conventional diesels. I am looking forward for larger hybrid options in the 4wd market, but am a little worried that petrol/hybrids in those vehicles will at the end of the day not be as efficent as a well tuned diesel in those use cases.
Just looked up the official fuel efficiency figures for the QASHQAI from Nissan for the ICE version and the e-power version. You can expect to save 1 litre of fuel per 100 km with the e-power version but it uses premium fuel. You do get 30 extra kw of power though torque is limited off the line so reviewers are saying the ICE version is quicker off the line.
@@BikerLordCarnage incorrect. I just stated that torque is governed at take off leaving multiple reviewers to state its slower off the line. As for premium fuel simply type "nissan e-power fuel octane requirements" into google so you can prove yourself wrong.
David Bell, we here in Australia, including JC, take the piss out of the Poms because it’s just so easy. You sit over in England with your smug superiority complex drinking warm beer and reminiscing about how great the British empire was last century while it’s pissing down rain outside. We here in Australia just don’t give a shit wether other countries like us or not and we certainly don’t walk around with a superiority complex or have some class system that make you superior to your countrymen just because you were born rich. We’re to busy having a bbq down on the beautiful white sandy beaches, watching babes in bikinis frolicking in the surf, and sitting back in the shade enjoying a cold beer. The one type of Englishman we seriously don’t like is a “whinging Pom”. Ohh, that’s you. This is from someone that was born in Westham, London but thankfully raised in Australia. Cheers mate👍👍
I always love watching your stuff John. You are a pleasure to behold. Excuse me if this is wrong, I'm beginning to see what is perpetuating SUVs - its the bloody EV market, so they have all that extra underslung space to put all the extra tech involved. It doesn't remove the fact that a lighter, smaller, more aerodynamic chassis packing a smaller cleaner burning engine is way better for the planet overall, regardless what the snake oil salesmen would have you believe. Diesels in the noughties were sold on the back of Clarkson's insistence that they can be awesome 0-60 machines that smoke the Nurbergring. They never could, without huge cost in the form of emissions, as diesels have a narrow rev range, and shouldn't be rushed about their work. Most, if not all trips don't need powerful cars anyhow. A small engine like a Tsi will do most stuff, given the traffic we live among these days. But people want their lardy fat cake and eat it. It's just that they don't register how much is going in the tank, how often and how much its hitting their pocket, it seems. Oh well lets the arms race on the road continue... we'll run out of juice and that will be that. Rant over.
I can't say, for sure, about how diesel electric trains are powered, but diesel electric ships I worked on as engineer, the power to the propellors comes from batteries which are charged by the diesel engine generators, the batteries are kept fully charged by a fuel controller coupled to the engine which keeps the diesel engine running at synchronous speed to produce 440 or 880 V
I have 2 Nissan Serenas. One is a regular 2.0 petrol and one is an e-Power 1.2 3cyl. The regular Serena can return 34mpg when driven gently and on a combination of town and rural driving. Under similar circumstances the e-Power returns 65mpg.
I think you made the point in a previous video … but a Euro 5 or US Tier 4 emissions compliant ICE emit way less emissions than the coal fired power plants that typically charge EVs … considered I live under the cloud of the coal fired plants in the Hunter … I’d rather the EVs burn in Sydney than choke on the emissions from their EVs.
“…AI is connected to everything and it’s got access therefore to endless freakin’ information. It’s not the same thing as being able to join the dots…and have actual knowledge.” TILT, BINGO, FUCKING JACKPOT!
The Hybrid system in the Toyota RAV4 is efficient, my wife returns 50+ mpg with her 22 reg 2wd RAV4 Excel. The same rural trips in her previous manual 18 reg petrol 4wd Honda CRV 2.0 EXi she returned about 34mpg. The 2018 - 2023 MY CRV 4wd hybrid average real mpg is reported as 45.5 mpg. Now no option in the UK to buy a either a petrol RAV4 or Honda CRV. Another benefit of the Toyota hybrid system is that the petrol engines have both direct & port fuel injection; so with all the stop starting that occurs with hybrid systems carbon build up on inlet valves is unlikely to occur. In UK, according to Honest John Real World mpg reported by users the 2014 - 2021 MY 1.3 petrol Qashqai averages 41.1 mpg & the 2021 MY 1.3e Power averages 41.3 mpg. So proof, as JC reports, that there is something seriously wrong with how Nissan have implemented hybrid power.
I remember how much fun I had undercutting the commutators on traction motors and more particularly, generators (in situ'). Diesel Electric locos are far simpler than a mechanical drive would be, given that the bogies are rarely in line with the chassis, That is, I would think, why they are most common. Diesel Hydraulics are also used on smaller engines. Would I be correct John?
Diesel electrics work so well because of torque that’s what the main benefit is. Bucket loads of torque from zero RPM is what a train needs to get moving and to stay moving. A mechanical connection to the wheels from a straight diesel train just can provide the power a traction motor can. Not to mention the crazy over engineering required to have gearboxes to drive the wheels.
Greetings from the UK. I totally endorse your views on the country of my birth and Land Rover in particular. Thanks for taking an interest whilst keeping a sense of humour 👍
."The internet is a wonderful place to watch people speak with 100% conviction on topics they know nothing about".
- Thomas Jefferson 1821
🤣🤟
😂😂😂😂😂
John talks commonsense backed with scientific proof and very lively humour.... love it.
Sounds like 3 good reasons for lefty hate....
KingChiller3rd! I'm going to use that from now on!
@@davidnobular9220 not usually, faaar more likely populist righty hate & other head-in-sand types
@@davidnobular9220I'm a lefty from the other side of the equator, and I still love his humor and sarcasm. Plus I also see the deficiencies of EVs and will never likely own one
@@davidnobular9220Or indeed righty hate, since the far left and the far right are both as fucking nuts as each other.
So good. Not an enginger but worked in engineering all my long life but i did major in physics and maths so close to an enginger. Last 8 years as a business analyst, so deep diving into this sort of thing daily. Love your clean analysis. Keep it up.
I once went to a photography class run by a local photography store, and they asked what printers we each had. I was the only one that had a particular model, and they said it was crap.
Guess who sold it to me...I wasn't especially pleased they informed me, no.
Now that’s funny..
Locomotive driver here, very well described dynamic brake John.
John worked on the railways.....after he left school...and before Unniversity...so he should know!
That surprised me. I've only ever heard engineers, mechanics, and a handful of railfans describe dynamic brakes properly. It's not the kind of thing laymen tend to be interested in, naturally.
Great video. I had always wondered why the 'Diesel-Electric' type approach hadn't been widely implemented because I had also assumed the efficiency savings were obvious. Thanks for setting the record straight as I hadn't considered the more significant energy losses in the system. Obvious really, but easily overlooked. Keep up the great content 👍
If Diesel-electric type have chance look what they power big ship's, I think diesel as range extender is concept we can go.
John , I hope you do after dinner talks ? You’d have em in stitches, keep it up mate facts always win .
i'd pay good money for that. Especially with the Dollar/Pound exchange rate :D
Hi John, wife number 5 punched me in the arm when you put so much credit on Ozzy. She told me to tell you that the real hero there is Ozzy’s wife Shazza. I reluctantly agreed, anyone who not only can get Ozzy onstage but also turn their lifestyle into a business is pretty switched on. Other than that, I received no other punches. Good episode.
Ozzy for king, now THAT would be a promotion.
(SHARON! the dog's crapped on the throne again!)
Good down-to-earth commonsense, backed up with engineering / chemistry expertise. Excellent.
Physics mostly, not chemistry.
Just my two cents. I own a QQ e-POWER since the end of march 2023.
I've also drove the MHEV version of the same vehicle (so lighter and much less powerful) for more than 3 weeks during the summer.
My average fuel consumption with the MHEV version was more than 30% higher of the heavier, much powerful e-POWER version.
Note that on my e-POWER I have all season tyres (less fuel efficient) while on the MHEV car I had summer tyres (more fuel efficient). With the stock summer tyres on my e-POWER I guess the delta would have been higher.
This is the difference between talking about something and testing something, IMHO.
Why are so many repeating what you said and arguing the opposite. Really does this spirit apply across society ? I sincerely hope not.
Loving your programme and how you breakdown the information.
For someone who love physics but can’t seat through the lectures cos the professors knock me dead everytime and left me clueless you’re a time/lifesaver.
I pray you keep that beacon for rationale thinking lit and bright. Cheers
i think it may be time for John to get his flip-chart back out.
Honda's first hybrid electric vehicle was marketed as the Honda Insight in the United States. People who bought the 840kg highly aerodynamic two-passenger car were looking for high gas mileage and they delivered. However, over time the batteries died and were very expensive to replace. The drivers found they got better gas mileage as the batteries died, even though their driving habits did not! I'm not sure how many bothered to replace the batteries, but I'm sure they were few.
I like these videos. It's like looking in a mirror and listing to a conversation with my son and his cognitive delay. He gets so convinced his reasoning is right that he can't see where his thoughts are wrong even when I physically demonstrate how something works.
The fact that both sides listen to John is very telling.
Shame is only one side appears to link listening and comprehension
Both sides watch; however only one side truly listens.
grumpy old men was a funny movie.
Always wonder how they start out...
He is full of bs though at times.
544 comments already, so I doubt you'll get to see this one, but I just wanted to say thanks. Of all the videos you put out these sort are by far my favorite, I find them not only a good laugh but really really educational. Thanks again.
You can spot the engineers from the none engineers just by reading the comments. Love the content as always.
Thanks
It is SO refreshing to experience both a clear and robust scientific argument. In a world full of FUD and science illiteracy, John is a breath of fresh air.
My sister is visiting me and for entertainment I watched your video on the Nissan. We were both in stitches!! I’m looking forward to this one!! 😂😂😂
"Now THAT'S cawmedy!!" - Slappy the Squirrel. "Thanks John, you ROCK man!!" - Subway Facemelt. And NiMH carries much less risk, so it rocks too, man!!
Dear John, an excellent video once again.
Audi tried to make a range extender A1 e-tron a long, long time ago. Unlike the Chevrolet / Holden Volt which has an internal combustion elevated speed operation strategy ('screaming' option) to prepare the otherwise effective 'historic' BEV with a range extender engine for major mountain climbs, the Audi found the tiny rotoary engine was in 'scream' mode for rather extended periods (ie, it rarely shut up) due to the modest battery pack in the 'concept'. The project was abandoned, almost as it prepared to go to market because..... it didn't work on any level.
Nissan e-power was origianlly supposed to have a much bigger battery, to operate much as the Chevrolet / Holden Volt did - the internal combustion engine would rarely if ever switch on and the traction battery could be externally recharged. Oh dear.
It just makes sense. There is no free ride with power, it has to be generated somehow. My hybrid gives me about twenty-five more mpg than my old turbo, with pretty similar performance. I lose the turbo and gain an electrical system bolted onto a simpler engine. Overall it is more complicated. But I think I understood what I was doing when I bought the new car and I understand how the hybrid system works, I think. Weight and aerodynamics play a big part, as does the price and security of fuel sources, but I hope for the best. As for the Nissan, I can’t understand adding a complicated electrical system to a petrol engine for practically no real gain, I did look briefly at this car and came to the conclusion that the power source was silly.
Nah...let's put a zero-point energy system in the vehicles.
If I had a small reactor I would buy an ev. Until I can get a reactor that will last 25 years no thanks.
I have been watching this channel for several months now and I have come to a conclusion. John Cadogan has a wonderful turn of phrase, and more power to him.
Thank you very much mate.
My formal science and math education finished when I was 16, probably like many here. I’ve picked up some along the way and seem to have retained quite a lot of the knowledge gained at school. The danger comes when someone thinks they understand a subject but in reality they have just scratched the surface. Personally unless I’m in my own area of expertise, I keep my mouth shut.
Interesting how none of the "but trains are diesel-electric therefore you're wrong" comments mention WHY trains use diesel-electric drive.
It's not because of efficiency, although the engineers who have been working on them for the past 75 years have made them very efficient.
The real reason is torque. In particular, starting torque. Pulling 100k tonnes, uphill, from a standstill takes a massive amount of torque. The kind of torque that will eat a clutch up in no time at all. The kind of torque that is not possible to produce with a reasonably sized hydraulic drive. But it is the kind of torque that electric traction drives can produce in massive quantities using really small electric motors, relatively-speaking.
Instant expertise, add a keyboard. Welcome all the newly minted power unit experts. You do a great job John. Please keep doing it.
Go John you are awesome, much respect Sir from the UK 🇬🇧
Thanks for the honest feedback John.
This really explains why my previous traditional hybrid saved a lot of fuel. It was a lot lighter than this Nissan.
Do you think the Honda Civic e:HEV and 2023 Toyota Prius Prime wil do any better at this concept, or are any fuel savings just because of aerodynamics and very efficient engines?
P.S. English is not my native language, but I do apologise for getting "video's" wrong by using the Dutch way of spelling it.
How is it lighter? The battery is larger and heavier.
@@user-xu5vl5th9n The Nissan Qashqai E-Power weighs a whopping 1587 kg in it's base trim here.
My previous car was a much lighter hybrid, weighing more than 400 kg less than that.
My current ICE car actually weighs a little more than the hybrid, but it's a little bigger as well.
Fuel economy was about 16 to 20 km per liter depending on the conditions and speed. My current ICE gets only 12-16 km from the same liter of fuel in similar conditions.
Not all hybrids are as big and heavy as these silly Nissan cars. You really don't need a huge battery or a powerful electric engine to make hybrids work.
In many ways you're highlighting the difference between marketing perception and the reality.. The locomotive's 'apparent' efficiency is what's been sold along with a bunch of other lies about these planet saving cars people can stump up and buy.. This and the last vid have been priceless dude... keep it up, in all ways. ;)
I love the way people bang on about keeping the engine in the best part of its efficiency curve (kind of why gearboxes are a thing) while completely missing that electric motors, batterys and so on all have similar curves and won't be in theirs for the majority of the time.
The engine is also not some special, optimised thing - its just an old one they happened to have knocking about. If it was some one off item that could run at ship engine efficiency I could maybe see a point but even then this would be a very heavy and complex way to get similar efficiency to a simple hybrid and still far worse than a diesel hybrid.
Thanks for your entertaining explanations John.
I'm a pensioner now but have spent a career doing mechanical, electrical and electronic engineering (and have the bits of paper) and I love your responses to the ignorant sofa "engineers" with the proper hard sums. Keep up the good work! 😀
I swear your comments section is the global epicentre of Dunning/Kruger...
Still, it makes for enjoyable content!
*EV = Explosive Vehicle*
Diesel locomotives prime mover does not operate at a constant revs all the time . EMD built loco's have 8 speed settings on the throttle notch 1 to notch 8. They still accelerates like a vehicle that has an auto or manual trans but does not have any trans . EMD experimented with a constant speed prime mover but found that an engine with manual throttle control used less fuel . Max engine revs are under 1000 rpm but they sound like 8000rpm . The current EMD 710 series engines have 11.6 litres per cylinder .
Glad to hear from someone who knows diesel-electric trains!
None of them ever mention torque. D/E power plants on trains won because you simply cannot reasonably produce enough torque to get the train moving with a mechanical or hydraulic transmission. Only electric motors can reliably get a train moving and with enough control to manage slippage. And it's not like they didn't try. I can remember quite a few diesel-mechanical drives being tested back in the day. And they were being tested BECAUSE they promised better efficiency than diesel-electric. Some even became successful as shunters for a while.
Thanks for the laughs Jonn, really needed it. Just subscribed.
London transport runs a fleet of 300 diesel electric buses. I believe the diesel runs at a constant rpm (1500?) which feeds power into a set of batteries which in turn operates the traction motor. It is said that this reduces the CO2 by 40 percent but it also reduces the nox levels because high loads /high revs which leads to high cylinder temperatures.
This system seems to work very well and allows good acceleration and braking. However this is a specialist application and very expensive ( quarter of a million Pounds each) As you say the Nissan system is dung and no way forward. Brilliant videos keep it going
Isn't running the ICE in its most efficient rpm range what the CVT is all about?
Yes, but people don't like the sound of CVT engines. Many hybrid systems use CVT and it seems to work.
@@SolAce-nw2hf If they don't like the sound, they just need to turn the radio louder ;-) People are just used to the sound and feel of gears changing. It seems sporty and fun. This forces the auto makers to fudge a simulation of gears changing into the logic of the CVT, which I find very annoying. I have been driving a Honda CRV for some time and I find it very comforting that there is no hunting for the correct gear when the demand changes, and that the tach almost always sits around the optimum RPM range without me having to do anything.
@@edgilchrist6374 I have owned a CVT car as well. It did not bother me after getting used to it and also learning not to put my foot down all the way without any good reason.
But I do get how weird it must sound when doing a test drive. Maybe I will try the new Honda Civic e:HEV myself soon. They may have gotten it right.
John, please consider, instead of scrunching up the A4 to throw, could you fold it into paper airplanes and toss. I know you are capable of chewing gum and tapping your foot simultaneously, so it would just be something different, unusual, fresh and amusing. Cheers.
Make Australia More Aerodynamic.
If John folded the paper into aeroplanes, he might get them in the bin that's not there, he really needs a second camera facing the corner and a bin 😆😆😆
Why, he is being energy efficient with the current process!
Which Car (What Car?) hybrid fuel tests. Roughly.
City 100 mpg, country 65 mpg, motorway 45 mpg.
I was surprised by the low motorway figure.
My direct drive diesel does 55 mpg in country driving, and 65 mpg on the motorway.
R
The German Railway class 218 (BR 218) is one of the few diesel hydraulic (mechanical) locomotives in regular use. They're really built like a 4x4 vehicle in a lot of ways - diesel engine, transmission (2 speed maybe?) transfer case and prop shafts going to each bogie.
How old are they, what is their reliability/ reputation?
In New Zealand we had Vulcan Railcars that were straight diesel with a pre-selector gearbox, carried 88 passengers and sounded just great...
worked mainline services from 1940 until 1978....
and some "retired" ones are still being used on private museum lines...
@@JohnSmith-yv6eq - they're mainline passenger service (usually) built in the 70s. They use them to haul passenger traffic in the few places left that aren't electrified.
You always notice that John knows what he’s talking about, and I love listening to him, it’s like my lecturer on my tablet 😂😂. Another thing is people who don’t know what they’re talking about usually repeat what John has already said in previous uploads e.g diesel locomotives 😂😂
When talking about efficiency, if you use electric only, because the Ice transmission is still connected, you would have to add the associated loss on as well, because it will be driving the transmission back to the clutch that separates the ICE!
It's an old problem. An electric drive train does have some advantages and one significant disadvantage. They were tried in steam powered battleships at the end of world war one and between the wars. The advantages were not having gearing and long propeller shafts running through the ship (which if damaged can compromise watertight compartments), the drawback was always a small but significant loss of efficiency, so you get less range and speed from the same engines and boilers.
Thank you for no-nonsense and knowledge based explanations.
Laughed out loud......just got a Navara advertisement whilst watching this.....
Lol I got a QASHQAI one.
And I got an X-TRAIL ad! 😅
Excellent analysis again John. Top video!
E-Power is not just about the improved efficiency.
It gives much better performance than other hybrid systems, while being much more pleasant to drive in traffic due to the EV style 1 pedal mode.
Think of it as buying the "big engine, supercharged" version of the car, but getting better than the base model fuel economy.
I bought an E-Power car because of how entertaining it is to drive, but it also gets better fuel economy than other equivalent cars - even on the freeway.
Given that my day job involves designing electric propulsion systems, I had the same expectation of double mechanicl/electrical conversion stages resulting in poor highway efficiency, but it still matches or beats similar non hybrid vehicles (around 5L/100km at 110km/h).
Around town at low speeds it can do a genuine 3L/100km, which is way better than similar vehicles.
I drove a Toyota Aygo around Europe, which is a much smaller, lighter 1L 3 cylinder ICE car with stop start and a manual gearbox. It averaged 5.1L/100km around town and on the highway at 100km/h - but was painfully slow and couldn't maintain speed up hills. Its traction control system was a bit of a waste since it was impossible to get it to kick in even in the wet.
Funnily enough, in my testing, the tyres make the biggest difference to the fuel economy. Going from the original Eco tyres to "normal" tyres used 15% more fuel.
Maybe some people are getting confused about the mazda mx3- r-ev rotary engine work, where they said running at a constant rpm was the most efficient use of an otherwise inefficient ice engine.
John, you are not an inferior auto expert.
I repeat, John is NOT an inferior auto ecpert.
Good.
Didn't they develop a system for keeping the motor in the optimal power and torque band for the given road speed years ago by using a variable arrangement of gears?
Wot like a constantly varying transmission...
Nah surely not....
@JohnSmith-yv6eq Nissan have tried that and were demonstrated to be a bit shit at it.
I'm thinking of a selection of gear ratios that can be the best compromise. You could have the operator select them or have it all a computer controlled system for transmitting drive to the wheels. Put them all in a case or a 'box' to protect them from the elements.
Then you could have the option of a manual gear box or automatic transmission if you will.
It could catch on?
I love the voices. You should do voices for an aussie cartoon series
LMAO, I love your conclusion as you are describing the benefit of e-power as being basically identical to the benefit of a CVT …
So is it really surprising that the e-Power model isn’t significantly more efficient than the CVT model?
How about a bin cam?
Easy listing … love the delivery…💯 entertaining and very informative.. keep it up ✅
Today I noticed something odd on a Toyota. The emblem was highlighted around the edges in Blue. When I asked the driver they said that’s because it’s Highbred, it was a SA Government car. So Question are Highbred cars being marked in this way.
That was the hybrid hibred...
Dear John, an excellent video once again.
Das Audi tried to make a range extender A1 e-tron a long, long time ago. Unlike the Chevrolet / Holden Volt which has an internal combustion elevated speed operation strategy ('screaming' option) to prepare the otherwise effective 'historic' BEV with a range extender engine for major mountain climbs, the Audi Kommand found the tiny Wankel engine was in 'scream' mode for rather extended periods (ie, it rarely shut up) due to the modest battery pack in the 'concept'. The project was abandoned, almost as it prepared to go to market because..... it didn't work on any level.
Nissan e-power was origianlly supposed to have a much bigger battery, to operate much as the Chevrolet / Holden Volt did - the internal combustion engine would rarely if ever switch on and the traction battery could be externally recharged. I guess something 'happened' at Nissan Towers HQ to create the product which is now on sale.
Hi John, thanks for the awesome videos and being a great sport!
What is your opinion on the Honda civic eHEV?
Thanks for bringing common sense to this topic.
I love your shirt. Every time I have seen an outlet turned upside down. It was like scraping your nails on a chalkboard to me. Well, apparently, now I am wrong. The outlets are supposed to be turned with the ground lug in the up position, it’s just driving me crazy, even though they do have a point.
It's just a joke to include the US readers.
Dont know if its any more efficient but they did make a car with a transmission like this almost a 100 years ago and there is a whole show on this on Jay Leno's Garage. It was a magnetic flywheel that spun around a few coils which when engaged separately was like gears in a transmission. There was 4 or 5 gears in the transmission and looked like it was cool.
Hi john, I love your videos. As an engineer like you we like facts and figures. I hate to slightly argue with you, and I have no figures to back my suspicion up. But I suspect the charging and discharging efficiency of lithium ion batteries is not as efficient as you suggest. After all charging is a chemical reaction. To my knowledge these batteries are temperature controlled. This control will have a serious effect on efficiency from 2 points of view. If the battery heats during charging this is lost energy. If you use a cooling system to reduce the temperature that energy has to come from somewhere. As i have stated I would have to do the research to prove my suspicion. I did some work on Lead Acid batteries at university and the charging rate has a big effect on efficiency. Thanks John for making your lovely videos so hilarious.
Nice one John, that presentation may have vindicated me somewhat. With some people I know/work with.
After over 40 yrs working on and with ICE's and battery powered vehicles when the Toyota Prius was launched I was
seriously impressed and over the years have always argued that hybrid is the way to go until hydrogen becomes realistic.
Hi John here in the UK Nissan tend to use CVT transmissions in their ICE cars so the engine runs at the best rpm just like E Power at a cruise
The CVT/ICE combination is for fuel economy & if done properly, run cleaner.
That's it for the pluses. 😉
Cvt
Crap variable transmission
@@CNile-se9xw CVT are junk... they cost more in maintenance and are less efficient than a well designed modern automatic when driven harder than a grandma would drive it.
Nissan CVTs are just about the worst in existence.
@@javic1979 No argument from me.
Maybe we've been lucky, in that our 2011 MB B200's CVT hasn't had any issues, but I drive like a grandma because there's no pleasurable feedback from putting the foot down.
The exhaust note is monotone/monotonous,& only that changes in volume under acceleration.
15 minutes of video, 30 of response. Genius 😂😂
So this car is the gift that keeps on giving.The French government is the largest single shareholder in Renault group, owner of Nissan.
It received subsidies from the government to keep production in the UK.
The mirror image of Sir Ratcliffe building the Ineos in France with large amounts of Austrian and German engineering 🤪
I saw a program on the UK TV where they compared the emissions of a Jeep, I think it was, Hybrid and the same petrol version, the petrol made less dangerous gasses than the hybrid because of the constant stop start of the hybrid engine.
Today in Sheepshagistan:
LDV announced a $23.000 drop in price for the only EV ute being sold in NZ.
I wonder what the early adopters who paid that $23k premium earlier this year are feeling about brand loyalty....
since LDV are discontinuing this EV-only model in NZ????
the cvt in the murano was supposed to keep the engine in the sweet spot too, history shows the drive train failed early costing way more than any would be gains in fuel savings. fyi, trains are more efficient due to the lower friction of steel on steel wheels/tracks,
Whilst there is a large population of diesel electric locomotive extant with DC motors, modern designs now use AC motors.
Also a bit of railway terminology pedantry if I may. In locomotives the generic term used for braking using the traction motors is dynamic braking and there are two categories of this. Rheostatic braking which uses onboard resistance grids to generate heat as you describe and regenerative braking (on electric locomotives) where the braking energy is returned to the electrical supply.
John the only place that uses locomotives with diesel drives are those used in the sugar industry for the transportation of cane. Most are 0-6-0 wheel configuration. Too small to consider diesel-electric as a vaiable drive system. Some of the larger locomotives are diesel-hydaulic with engine and axles joined thru a hydraulic torque converter.
Interested to hear what your thoughts are on Edison Motors truck building company with hybrid trucks on the same principle, except with a far larger battery system.
What they have done and claim appears to be brilliant and in most use cases the system will be an efficiency improvement compared to conventional diesels.
I am looking forward for larger hybrid options in the 4wd market, but am a little worried that petrol/hybrids in those vehicles will at the end of the day not be as efficent as a well tuned diesel in those use cases.
Just looked up the official fuel efficiency figures for the QASHQAI from Nissan for the ICE version and the e-power version. You can expect to save 1 litre of fuel per 100 km with the e-power version but it uses premium fuel. You do get 30 extra kw of power though torque is limited off the line so reviewers are saying the ICE version is quicker off the line.
e-Power does not require premium fuel, it just uses bog standard E10 fuel. e-Power is also quicker off the line due to the increased torque.
@@BikerLordCarnage incorrect. I just stated that torque is governed at take off leaving multiple reviewers to state its slower off the line. As for premium fuel simply type "nissan e-power fuel octane requirements" into google so you can prove yourself wrong.
@@GrantfromEarth I don't need to look anything up, I have an e-Power Nissan and it takes E10 fuel and is quicker off the mark.
@@BikerLordCarnage QASHQAI?
@@GrantfromEarth yes, a Qashqai 😉
David Bell, we here in Australia, including JC, take the piss out of the Poms because it’s just so easy. You sit over in England with your smug superiority complex drinking warm beer and reminiscing about how great the British empire was last century while it’s pissing down rain outside. We here in Australia just don’t give a shit wether other countries like us or not and we certainly don’t walk around with a superiority complex or have some class system that make you superior to your countrymen just because you were born rich. We’re to busy having a bbq down on the beautiful white sandy beaches, watching babes in bikinis frolicking in the surf, and sitting back in the shade enjoying a cold beer.
The one type of Englishman we seriously don’t like is a “whinging Pom”. Ohh, that’s you. This is from someone that was born in Westham, London but thankfully raised in Australia. Cheers mate👍👍
For any person with engineering background this is both extremely entertaining but great worry at the same time
The last 'good' Datsun was my 240Z
The 510 was what I wanted back in the day.
VERY popular.
Every time you crumple that piece of paper I collect the tears of tree huggers to make my cup of coffee. 😥 Keep up the great work.
Love your work
Nice one John. 👍
I always love watching your stuff John. You are a pleasure to behold.
Excuse me if this is wrong, I'm beginning to see what is perpetuating SUVs - its the bloody EV market, so they have all that extra underslung space to put all the extra tech involved. It doesn't remove the fact that a lighter, smaller, more aerodynamic chassis packing a smaller cleaner burning engine is way better for the planet overall, regardless what the snake oil salesmen would have you believe. Diesels in the noughties were sold on the back of Clarkson's insistence that they can be awesome 0-60 machines that smoke the Nurbergring. They never could, without huge cost in the form of emissions, as diesels have a narrow rev range, and shouldn't be rushed about their work. Most, if not all trips don't need powerful cars anyhow. A small engine like a Tsi will do most stuff, given the traffic we live among these days. But people want their lardy fat cake and eat it. It's just that they don't register how much is going in the tank, how often and how much its hitting their pocket, it seems. Oh well lets the arms race on the road continue... we'll run out of juice and that will be that. Rant over.
I can't say, for sure, about how diesel electric trains are powered, but diesel electric ships I worked on as engineer, the power to the propellors comes from batteries which are charged by the diesel engine generators, the batteries are kept fully charged by a fuel controller coupled to the engine which keeps the diesel engine running at synchronous speed to produce 440 or 880 V
Thanks John.
Good stuff very entertaining and comical too 👍
there's a company in Canada, Edison motors I think there called making logging trucks the same principle only with diesel engines.
let me tell you all about the nissan qashqai, john. my neighbour has the orangey-bronze one. i think it's called burnt umbrage.
John....Never surrender...Not that you would.
I have 2 Nissan Serenas. One is a regular 2.0 petrol and one is an e-Power 1.2 3cyl. The regular Serena can return 34mpg when driven gently and on a combination of town and rural driving. Under similar circumstances the e-Power returns 65mpg.
Those are impressive numbers
34 mpg for a modern 2.0 is frankly rubbish. .The figure for the E model is Cobblers, it can't return 65 mpg....😳😳😏😏🇬🇧
17:06 And old cars, and *_all_* motorcycles. To reduce smog-component emissions, outlaw:
• Diesel
• Old vehicles
• Motorcycles
Love your work .. can you talk about the lithium fires. Another big one from a golf buggy
Love it, people arguing with F=ma.... keep educating them John.
You're freaking hilarious.
Cheers from the outback of New Mexico.
Diesel mechanical locomotives do exist, they are usually smaller shunting locos and passenger rail cars.
I think you made the point in a previous video … but a Euro 5 or US Tier 4 emissions compliant ICE emit way less emissions than the coal fired power plants that typically charge EVs … considered I live under the cloud of the coal fired plants in the Hunter … I’d rather the EVs burn in Sydney than choke on the emissions from their EVs.
Talking of Colin Chapman spinning in his grave, I saw a transporter full of Lotus SUVs on the motorway last week. Made me rather sad actually.
Where can I find Batman's shark repellent? Would have been handy last week a couple of times.
Reacting to your comments edition. There's no way I can not watch such content 😂
“…AI is connected to everything and it’s got access therefore to endless freakin’ information. It’s not the same thing as being able to join the dots…and have actual knowledge.” TILT, BINGO, FUCKING JACKPOT!
The Hybrid system in the Toyota RAV4 is efficient, my wife returns 50+ mpg with her 22 reg 2wd RAV4 Excel. The same rural trips in her previous manual 18 reg petrol 4wd Honda CRV 2.0 EXi she returned about 34mpg. The 2018 - 2023 MY CRV 4wd hybrid average real mpg is reported as 45.5 mpg. Now no option in the UK to buy a either a petrol RAV4 or Honda CRV.
Another benefit of the Toyota hybrid system is that the petrol engines have both direct & port fuel injection; so with all the stop starting that occurs with hybrid systems carbon build up on inlet valves is unlikely to occur.
In UK, according to Honest John Real World mpg reported by users the 2014 - 2021 MY 1.3 petrol Qashqai averages 41.1 mpg & the 2021 MY 1.3e Power averages 41.3 mpg. So proof, as JC reports, that there is something seriously wrong with how Nissan have implemented hybrid power.
I remember how much fun I had undercutting the commutators on traction motors and more particularly, generators (in situ').
Diesel Electric locos are far simpler than a mechanical drive would be, given that the bogies are rarely in line with the chassis, That is, I would think, why they are most common. Diesel Hydraulics are also used on smaller engines. Would I be correct John?
Yes. Absolutely mate.
I like your contemporary-industrial Swiss cheese desk art!
Everyone is missing one of the biggest issues in this debate: It's a Nissan.
Diesel electrics work so well because of torque that’s what the main benefit is. Bucket loads of torque from zero RPM is what a train needs to get moving and to stay moving. A mechanical connection to the wheels from a straight diesel train just can provide the power a traction motor can. Not to mention the crazy over engineering required to have gearboxes to drive the wheels.