At 0:58 I just love how during the cylinder honing process, the block spins around instead of the honing head which here stays fixed moving up down only lol :) It looks like a plasma coating process by the way...
Oh, a Turbo extracts the exhaust gasses does it? Does anyone on Discovery have any idea about these things, jeez, I know it's only a TV programme but please get it right!
Well, combustion does occur in the cylinder, perhaps you're confusing it with 'ignition', which kinda happens but it's ignition due to the high temperature within the cylinder and not a spark, but there are some corking errors in these programmes.
***** Yeah my mistake, I mean't ignition. However it still stands that diesel does not need a specific air/fuel mix to make power. It requires it to make power cleanly.
Audi's TDI Engines are amazing for example the 6.0L TDI V12 from the Q7 It makes 500hp and 738 lb/ft of torque , and consumes 9l/100km!! More than 20mpg!
+1975 First On Race Day Capri 3.0 Ghia more amazing is the price tag back then around $ 2 million more amazingly the performance of that engine on the Q7 is comparable to the BMW M5 V10... oh god if I were that filthy rich!
They explained the turbo wrong. The exhast side turbine doesnt draw out exhast instead it is driven by the exhast and compresses air on the intake side.
Holy crap. Ya know I just finished rebuilding my 95 Z28 with an LT1 motor. I was like, dang engines have come a long way since the late 70's. Then I see this and thank god I only got ONE timing chain and ONE pair of valves per cylinder to deal with LOL.
The engine uses little fuel per mile, that's already greener without any emission software or control systems. This is an awesome engine hands down, I would like one without the "fixed" software. There is a dark downside to owning a diesel. Due to the quality of metals required, the more precise machining, the ultra high pressure injection amongst other things, diesels are expensive to fix. If you are a person who neglects their vehicle regularly, stick with a gas engine. A diesel will treat you right, but it only returns the love you give it. Gas engines care a lot less about your love.
I always said that until I bought my first turbo diesel a year ago. I FRICKIN' love it now. The torque is amazing, you accelerate on the motorway and it goes like a stabbed rat.
The turbocharger does NOT "draw out the exhaust"! It actually IMPEDES the flow of exhaust out of the engine but captures the energy required to drive the impeller which forces air into the engine.. More power is gained by the additional air than is required to power the impeller, so a net gain in power results.
If I remember right, Yamaha used it in earlier r1 models but then stopped making them because the intake port walls needed to be so thin, and the power gain is minimal compared to well designed 4-valve design :) It's also cheaper to make and maintain.
This turbocharger seems like GTB1756VK which has 56 mm on exducer (inducer 41,5mm), but on 3,0TDI are usually installed GTB2260VK which has 44,5/60 (inducer/exducer) ... and these spin really 200k RPM. We use these turbochargers on 1,9TDI and these spins about 250k RPM.
Gear case would need to be constructed on the side of the engine adding a bit of weight to house the idler gears and main gears for the crank and camshafts. Also the size of the gears would require the engine to be a little bit longer than it is currently to properly house the gears in the gear case. Not impossible its just they would have to redesign the engine to make it work with the current size constraints they have with their cars.
The exhaust side of a turbo DOES produce backpressure which IN ITSELF would reduce an engine's power. However there is a NET GAIN in power from the increased intake air forced into the engine by the impeller on the intake side of the turbocharger. Yes I am fully aware of the mechanical dirve of the compound turbos being used on a few modern heavy trucks. Mechanical drive from compound turbos were also used on some airplanes in WWII
The description for the turbocharger is wrong. The exhaust turbine doesn't draw out anything - it's spun by the exhaust, and drives the intake turbine.
Actually the turbo uses the waste heat in the exhaust to compress the air without robbing the engine of power. This is unlike a supercharger which would be gear or belt driven and thus takes power from the crankshaft. Believe me or don't in recent years more commercial trucks have compound turbo charging (not talking about series turbocharging) where a second turbo has the impeller drive a gear on the geartrain to add power to the crankshaft instead of driving a turbine to compress air.
3:35 says the turbo draws out the hot exhaust..... actually. as im sure we all know, the exhaust turns the exhaust wheel in turn turning the compressor wheel...
He also said there's two turbines... If you understand what he said then he got his point across. If you didn't understand what he said, then you wouldn't care, and he got... a... point across...
krap101 Stating that the turbo charger draws out the hot exhaust and then sends it out the exhaust pipe is dead wrong. The point that comes across is that the person who wrote the text does not have a clue how a turbo works.
Do they really put each individual engine into a "test vehicle" - or do they do that just once for the first production car, to get the emission specs, then just assemble engines into their actual cars for the next few thousand units?
Excuse got turbine and impeller backwards. Might as well also note that what I meant by series turbocharging was to have the air compressed twice by two turbos. The advantage of turbo is of course more power without wasting energy. Superchargers are more responsive as they don't need to spool up to speed and you don't have to worry about overspeed and loss of lubrication to a spinning turbo after heavy engine load and immediate shutdown.
In the old days before common rail injection technologies, having more valves was the best way to achieve best fuel dispersion in the zylinder. Now since that is achieved by high pressure injection, regulated by nozzle geometry and ecu chips, having 3 intake valves became obsolete.
1.) Put a turbo in an oven and heat it to 1.300F degrees and watch it spin. 2.) Did you ever see a windmill spinning on a hot day when there was no wind?
+baxtar1963 Their CEOs make less because auto manufacturing is a low profit business, where the high margins are in spare parts and the cars are sold with profit margins that would kill most businesses. Also, in Europe we drive cars for 10, 20 years because we can't afford to buy new ones, and because of taxes cars here are more expensive than in America. No shit out CEOs make less. We can barely afford to buy their products.
a turbocharger both compressing the intake air and also drawing out the exhaust gas and sending it out the exhaust system. i would really like to have a turbocharger that can do that.
and (sorry, forgot to write this in first response) I also consider the european version of honda accord to be the best value on the new car market right now
+Bio Power Most diesels that blow black smoke are modified. If there's a newer truck sooting up, it's intentional and it's done because the driver is an idiot that thinks it looks cool. If it's an older truck like any sort of box van or semi, then yeah it probably needs injector cleaning and injection pump rebuild.
I think they mean 30% better fuel economy. It may only be 7% more efficient but diesel stores more energy per litre which means you need to burn less for the same energy output.
Think about it, newtons laws of thermodynamics tell us about the conservation of energy. We cannot create energy nor destroy it only convert it, energy losses are usually in the form of heat escaping. If turbos really operated on the pressure of the exhaust then compound turbocharging would be pointless and counterproductive as the force would push back on the piston during the exhaust stroke. Of course there's miniscule resistance, but the turbo really gets energy from the heat of exhaust.
Remember back in the day when people worked hard and didn't complain? ;) I spent enough time working in a unionized factory to know the tendencies of human 'robots'.
3:30 one turbine compresses air entering the intake manifold, the other DRAWS OUT THE HOT EXHAUST and sends it out the cars exhaust pipe...dafuck! turbochargers ARE DRIVEN by hot exhaust gases, they dont send them out of exhaust pipe. Cars without turbo can get rid of exhaust gases too :)
You diesel haters are something else again. The Audi turbo diesels win races and use identical suppliers used by Benz and BMW. THE FACTS ARE that the use of genuine German synthetic oils keep them all running to 500k miles. They all use piston, rod, chain and tensioners, and injection from identical suppliers and that there are more diesel powered cars in Europe than gas ones. Diesels do not suck. They outlast gas powered engines even though they have very high compression ratios. BMW BENZ and A
It seems to me that you didn't understand the benefits of using more valves per cylinder... 1. You have more intake area surface 2. It is lighter and able to stand higher revs
new engines are all turbo. (petrol and gas both) with a turbo engine you dont need 5valves per cylinder. the turbo and injection make all the torque and hp. you can safe the enormous engineering and fabrication-effort which are required in making 5valves per cylinder heads.
Putting it that way; yes, stuff will wear faster. Keep in mind though; if your wanting to "race" or drive aggressively, just get a "RS/S" Audi, they build those engines to withstand those extremes! As for the bolts, most German cars need specialty tools to even change certain fluids! ..thats a pain!
I'm not 100% sure about the diesel, but I don't think they ever made a 5v per cylinder diesel engine. As for their petrol's, after they introduced the direct fuel injection in the FSI and TFSI engines, there's simply not enough room in the cylinder head for 5 valves any more. Not that there ever was any real indications on that 5 valves has any advantages over 4 valves.
Well yes and no,there is common rail injection which improves the poweroutput drastic by injecting diesel multiple times which each stroke but as you said,we won't see a Ferrari running on diesel any time soon.
Not so in this generation of Diesel. The multiple injections during the power stroke are monitored in real time via a pressure sensor in each glow plug assembly, the REAL secret to this generation. NOx emissions are greatly reduced by a dual pass EGR system, lowering combustion temperature and NOx. The exhaust of this engine is cleaner than a gasoline engine; the pipes are still silver on the INside after many thousands of miles.
I love the RS cars, A buddy of mine has an RS4 and indeed its fast enough for any track day but TBH I´ll take a BMW "M" car any day before an Audi RS... Especially the M3 E92 (Drools)...
And for passenger cars. A turbodiesel is really really nice to drive as they use to have incredible low-down torque (here in Europe most prefer to use manual gearboxes so the engine characteristics do matter), and they consume noticeably less too. At least in European fuel prices, your wallet will thank you if your car runs on diesel.
I just wish that VW group would use gears for the camshafts not chains and sprockets, they could really increase the power of their engines if they chose to use gears not chains.
continuing..... 5 valve engines have smaller valves that enable higher revs - an advantage negated by better, lighter materials and stiffer springs Bottom line - The marginal increase in volumetric efficiency is probably not worth the increase in cost and complexity. Similar improvements in breathing can possibly be made in other areas of design of a 4 valve engine without the cost increase of a 5 valve design
yes that was till 20 yrs ago , the new ones don't rust before 14 yrs of life. or even longer with some models. the only problem with some cheaper italian cars is that the seats and seat position aren't that comfy as the german ones
Diesels are pretty efficient but don't believe the quoted mpg, especially when we're talking about NEDC mpg because manufacturers have become experts at cheating the test to get amazing fuel economy and emissions that aren't anywhere near real world numbers. You'd be lucky to get more than 20mpg from a V10 TDI.
less moving parts generally means more reliable as in there is less things to break. chances they abandoned it was because there was no longer a need to, maybe valve technology became more efficient making the use of 5 valves worthless.
germans made this big complicated clockwork while italians made piezo electric high pressure injectors that work more precise and give more power. now germans use the piezo's to. anyhow that V6 was an awesome engine
they don´t test every engine, no. That would have been extremely time consuming and expensive. The test you saw here is tests that is done to only some cars in the production. How often these tests are done depends on car company and so on.
Honestly you thought that's how I think it works and when did a windmill which doesn't operate on the same principles come into this? No it uses the physics of thermodynamics by compressing the hot exhaust through the volute to make it hotter. The area past the volute is at a lower pressure and temperature and as physics shows us heat goes toward cold and high pressure goes toward low pressure until the difference is balanced. Look at jet engines, ramjet, scramjet and Brayton cycle similarity.
last step: Install the ECU that tricks smog
At 0:58 I just love how during the cylinder honing process, the block spins around instead of the honing head which here stays fixed moving up down only lol :)
It looks like a plasma coating process by the way...
very nice video, I like Audi items
Oh, a Turbo extracts the exhaust gasses does it? Does anyone on Discovery have any idea about these things, jeez, I know it's only a TV programme but please get it right!
yes
tperr63
A turbo is driven by the exhaust.
They also keep referring to "combustion" which doesn't happen with a diesel. Diesel's work on compression.
Well, combustion does occur in the cylinder, perhaps you're confusing it with 'ignition', which kinda happens but it's ignition due to the high temperature within the cylinder and not a spark, but there are some corking errors in these programmes.
***** Yeah my mistake, I mean't ignition. However it still stands that diesel does not need a specific air/fuel mix to make power. It requires it to make power cleanly.
how its made is so addictive
Audi's TDI Engines are amazing for example the 6.0L TDI V12 from the Q7 It makes 500hp and 738 lb/ft of torque , and consumes 9l/100km!! More than 20mpg!
+1975 First On Race Day Capri 3.0 Ghia more amazing is the price tag back then around $ 2 million more amazingly the performance of that engine on the Q7 is comparable to the BMW M5 V10... oh god if I were that filthy rich!
They explained the turbo wrong. The exhast side turbine doesnt draw out exhast instead it is driven by the exhast and compresses air on the intake side.
very good video for fans of the engines and technology
Holy crap. Ya know I just finished rebuilding my 95 Z28 with an LT1 motor. I was like, dang engines have come a long way since the late 70's. Then I see this and thank god I only got ONE timing chain and ONE pair of valves per cylinder to deal with LOL.
That intake manifold is a lovely piece of hydroformed metal
We love our V8 2003 allroad, thanks Audi for an amazing vehicle.
Cool ring compressor. I have to look for one like that.
@Serostern I don't think it's hydroformed. The finish on the material looks more like that of cast aluminium...
The engine uses little fuel per mile, that's already greener without any emission software or control systems. This is an awesome engine hands down, I would like one without the "fixed" software. There is a dark downside to owning a diesel. Due to the quality of metals required, the more precise machining, the ultra high pressure injection amongst other things, diesels are expensive to fix. If you are a person who neglects their vehicle regularly, stick with a gas engine. A diesel will treat you right, but it only returns the love you give it. Gas engines care a lot less about your love.
I always said that until I bought my first turbo diesel a year ago. I FRICKIN' love it now. The torque is amazing, you accelerate on the motorway and it goes like a stabbed rat.
The turbocharger does NOT "draw out the exhaust"! It actually IMPEDES the flow of exhaust out of the engine but captures the energy required to drive the impeller which forces air into the engine.. More power is gained by the additional air than is required to power the impeller, so a net gain in power results.
If I remember right, Yamaha used it in earlier r1 models but then stopped making them because the intake port walls needed to be so thin, and the power gain is minimal compared to well designed 4-valve design :)
It's also cheaper to make and maintain.
Exhaust turbine does draw some power tho. Im sure you heard for turbo lag?
This turbocharger seems like GTB1756VK which has 56 mm on exducer (inducer 41,5mm), but on 3,0TDI are usually installed GTB2260VK which has 44,5/60 (inducer/exducer) ... and these spin really 200k RPM. We use these turbochargers on 1,9TDI and these spins about 250k RPM.
Gear case would need to be constructed on the side of the engine adding a bit of weight to house the idler gears and main gears for the crank and camshafts. Also the size of the gears would require the engine to be a little bit longer than it is currently to properly house the gears in the gear case. Not impossible its just they would have to redesign the engine to make it work with the current size constraints they have with their cars.
The exhaust side of a turbo DOES produce backpressure which IN ITSELF would reduce an engine's power. However there is a NET GAIN in power from the increased intake air forced into the engine by the impeller on the intake side of the turbocharger.
Yes I am fully aware of the mechanical dirve of the compound turbos being used on a few modern heavy trucks.
Mechanical drive from compound turbos were also used on some airplanes in WWII
The description for the turbocharger is wrong. The exhaust turbine doesn't draw out anything - it's spun by the exhaust, and drives the intake turbine.
So the rubber strips are better?
Actually the turbo uses the waste heat in the exhaust to compress the air without robbing the engine of power. This is unlike a supercharger which would be gear or belt driven and thus takes power from the crankshaft. Believe me or don't in recent years more commercial trucks have compound turbo charging (not talking about series turbocharging) where a second turbo has the impeller drive a gear on the geartrain to add power to the crankshaft instead of driving a turbine to compress air.
Great show!!!!!!!
Fun fact: Volvo's D24 is a Audi engine, so is the 2.5D in the 850/S/V70 and early S80s.
Is that a BMK-engine or the newer one?
3:35 says the turbo draws out the hot exhaust.....
actually. as im sure we all know, the exhaust turns the exhaust wheel in turn turning the compressor wheel...
He also said there's two turbines... If you understand what he said then he got his point across. If you didn't understand what he said, then you wouldn't care, and he got... a... point across...
krap101 "and he got... a... point across... "
He sure did. Blatantly wrong though, but he got a point across.
Raspoetin a Tell me the difference between a compressor wheel and a turbine wheel...? Aside from efficiency... Both can do either thing...
krap101 Stating that the turbo charger draws out the hot exhaust and then sends it out the exhaust pipe is dead wrong. The point that comes across is that the person who wrote the text does not have a clue how a turbo works.
As you haven't heard - there is two turbos, one compresses air another takes exhaust out.
Do they really put each individual engine into a "test vehicle" - or do they do that just once for the first production car, to get the emission specs, then just assemble engines into their actual cars for the next few thousand units?
Why's that? Also could they not be converted?
Excuse got turbine and impeller backwards. Might as well also note that what I meant by series turbocharging was to have the air compressed twice by two turbos. The advantage of turbo is of course more power without wasting energy. Superchargers are more responsive as they don't need to spool up to speed and you don't have to worry about overspeed and loss of lubrication to a spinning turbo after heavy engine load and immediate shutdown.
why does audi not use the 5valve per cylinder anymore?
1:16 , i am so excited after watching that scene ....oooo wow ...
small gripe: "retaining frame for the crankshaft" is called a crank girdle. Otherwise the guy is right turbo exhaust wheels don't suck
High altitudes - what does it mean? Like plane - altitudes?
In Europe the highest pass road is 2802 meters high ( Cime de la Bonette). Maybe that mean "High Altitude".
In the old days before common rail injection technologies, having more valves was the best way to achieve best fuel dispersion in the zylinder. Now since that is achieved by high pressure injection, regulated by nozzle geometry and ecu chips, having 3 intake valves became obsolete.
Did I see no head gasket or am I blind?
1.) Put a turbo in an oven and heat it to 1.300F degrees and watch it spin.
2.) Did you ever see a windmill spinning on a hot day when there was no wind?
yes but we never used the acronym DCI TDCI or CDTI.
Italians use only the acronym JTD JTDM JTDM2
@ValleyImportsInc "Simply The Best" is a Tina Turner song.
That engine looks like a nightmare to work on full of plastic junk but its cool to see how an engine is made though cheers for the upload.
did u recently see I Robot?
Perpetual motion. YAY! :D
The 3 valves are for the intake.
not the exhaust.
No doubt a cost vs. benefit decision.
i have a manual engine hoist :/ i prefer it over a hydraulic, i feel like i have a better since of control over what i am doing
Nice vid thank you
These workers make a living wage and their CEO makes substantially less than american workers. America has a lot to learn from Europe.
+baxtar1963 Their CEOs make less because auto manufacturing is a low profit business, where the high margins are in spare parts and the cars are sold with profit margins that would kill most businesses.
Also, in Europe we drive cars for 10, 20 years because we can't afford to buy new ones, and because of taxes cars here are more expensive than in America.
No shit out CEOs make less. We can barely afford to buy their products.
The new engine :) lovely.
a turbocharger both compressing the intake air and also drawing out the exhaust gas and sending it out the exhaust system. i would really like to have a turbocharger that can do that.
Excellent, I wanna see them explain how a sports bike Engine works.
and (sorry, forgot to write this in first response) I also consider the european version of honda accord to be the best value on the new car market right now
how the hell does it pollute less if diesel trucks are crazy with black smoke
+Bio Power Most diesels that blow black smoke are modified. If there's a newer truck sooting up, it's intentional and it's done because the driver is an idiot that thinks it looks cool. If it's an older truck like any sort of box van or semi, then yeah it probably needs injector cleaning and injection pump rebuild.
+KIV The newer TDI engines do not release black smoke, you are referring to the older diesel engines in the 90's. Just so you know.
Oh they can just as easily.
how did I get here from learning about head studs in my ford 6.0?
Turbocharged engines DO lose power at high altitudes, thou not as much as N/A engines.
Not quite. The TT RS has a 5 cylinder engine, but still 4 valves per cylinder. Regardless, it's an amazing engine!
I think they mean 30% better fuel economy. It may only be 7% more efficient but diesel stores more energy per litre which means you need to burn less for the same energy output.
Think about it, newtons laws of thermodynamics tell us about the conservation of energy. We cannot create energy nor destroy it only convert it, energy losses are usually in the form of heat escaping. If turbos really operated on the pressure of the exhaust then compound turbocharging would be pointless and counterproductive as the force would push back on the piston during the exhaust stroke. Of course there's miniscule resistance, but the turbo really gets energy from the heat of exhaust.
Remember back in the day when people worked hard and didn't complain? ;) I spent enough time working in a unionized factory to know the tendencies of human 'robots'.
Depends entirely on the breathing ability of the turbo.
Can they do a How its Made on how to cheat the testing system for emissions?
3:30 one turbine compresses air entering the intake manifold, the other DRAWS OUT THE HOT EXHAUST and sends it out the cars exhaust pipe...dafuck! turbochargers ARE DRIVEN by hot exhaust gases, they dont send them out of exhaust pipe. Cars without turbo can get rid of exhaust gases too :)
Audi, more or less it is simply The Best.
well, it's all semantics. The turbo can indeed spin at 200k rpm: 200,000 rotations per minute
Love the duct tape on the testing rig. real space age equipment...
thats one cute turbo
All things are be good explain its too easy explain any man take good knowldge from there i like it
You diesel haters are something else again. The Audi turbo diesels win races and use identical suppliers used by Benz and BMW. THE FACTS ARE that the use of genuine German synthetic oils keep them all running to 500k miles. They all use piston, rod, chain and tensioners, and injection from identical suppliers and that there are more diesel powered cars in Europe than gas ones. Diesels do not suck. They outlast gas powered engines even though they have very high compression ratios. BMW BENZ and A
It seems to me that you didn't understand the benefits of using more valves per cylinder...
1. You have more intake area surface
2. It is lighter and able to stand higher revs
@1951split On further investigation, yes, that seems to be the case, my bad.
new engines are all turbo. (petrol and gas both)
with a turbo engine you dont need 5valves per cylinder.
the turbo and injection make all the torque and hp.
you can safe the enormous engineering and fabrication-effort which are required in making 5valves per cylinder heads.
Putting it that way; yes, stuff will wear faster. Keep in mind though; if your wanting to "race" or drive aggressively, just get a "RS/S" Audi, they build those engines to withstand those extremes! As for the bolts, most German cars need specialty tools to even change certain fluids! ..thats a pain!
I'm not 100% sure about the diesel, but I don't think they ever made a 5v per cylinder diesel engine. As for their petrol's, after they introduced the direct fuel injection in the FSI and TFSI engines, there's simply not enough room in the cylinder head for 5 valves any more. Not that there ever was any real indications on that 5 valves has any advantages over 4 valves.
Well yes and no,there is common rail injection which improves the poweroutput drastic by injecting diesel multiple times which each stroke but as you said,we won't see a Ferrari running on diesel any time soon.
Not so in this generation of Diesel. The multiple injections during the power stroke are monitored in real time via a pressure sensor in each glow plug assembly, the REAL secret to this generation. NOx emissions are greatly reduced by a dual pass EGR system, lowering combustion temperature and NOx. The exhaust of this engine is cleaner than a gasoline engine; the pipes are still silver on the INside after many thousands of miles.
I love the RS cars, A buddy of mine has an RS4 and indeed its fast enough for any track day but TBH I´ll take a BMW "M" car any day before an Audi RS... Especially the M3 E92 (Drools)...
And for passenger cars. A turbodiesel is really really nice to drive as they use to have incredible low-down torque (here in Europe most prefer to use manual gearboxes so the engine characteristics do matter), and they consume noticeably less too. At least in European fuel prices, your wallet will thank you if your car runs on diesel.
I just wish that VW group would use gears for the camshafts not chains and sprockets, they could really increase the power of their engines if they chose to use gears not chains.
continuing.....
5 valve engines have smaller valves that enable higher revs - an advantage negated by better, lighter materials and stiffer springs
Bottom line - The marginal increase in volumetric efficiency is probably not worth the increase in cost and complexity. Similar improvements in breathing can possibly be made in other areas of design of a 4 valve engine without the cost increase of a 5 valve design
Awesome
yes that was till 20 yrs ago , the new ones don't rust before 14 yrs of life.
or even longer with some models.
the only problem with some cheaper italian cars is that the seats and seat position aren't that comfy as the german ones
Was that Elvis ? 4:38
Ha definitely! Love BMW! Theres something about the E46 I just love! The new M4's are really growing on me too!
Diesels are pretty efficient but don't believe the quoted mpg, especially when we're talking about NEDC mpg because manufacturers have become experts at cheating the test to get amazing fuel economy and emissions that aren't anywhere near real world numbers.
You'd be lucky to get more than 20mpg from a V10 TDI.
less moving parts generally means more reliable as in there is less things to break. chances they abandoned it was because there was no longer a need to, maybe valve technology became more efficient making the use of 5 valves worthless.
audis engines are amazing
germans made this big complicated clockwork while italians made piezo electric high pressure injectors that work more precise and give more power. now germans use the piezo's to.
anyhow that V6 was an awesome engine
cost
I see how I miss wrote it. Audi now owns Ducatti, I see I put Man etc which is VW. You are correct sir.
Today's diesels are as clean as gasoline engines ............🤔🤔🤔
nice
They use 4 valve heads now that have 2 larger exhaust valves instead of the 3 small ones. Supposedly it works better....
I was actually looking for how it's make, not assembled. But, not bad.
that v6 had 4 cams, damn
they don´t test every engine, no. That would have been extremely time consuming and expensive. The test you saw here is tests that is done to only some cars in the production. How often these tests are done depends on car company and so on.
I fucking love mechanical machinery.
Honestly you thought that's how I think it works and when did a windmill which doesn't operate on the same principles come into this? No it uses the physics of thermodynamics by compressing the hot exhaust through the volute to make it hotter. The area past the volute is at a lower pressure and temperature and as physics shows us heat goes toward cold and high pressure goes toward low pressure until the difference is balanced. Look at jet engines, ramjet, scramjet and Brayton cycle similarity.
Definitely news to me that a turbo draws out the exhaust... Still a cool video though.
It's also cheaper and less complicated so the engines are more reliable.