Fuel Efficient Cars - Shell Eco-marathon
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- เผยแพร่เมื่อ 24 ม.ค. 2015
- How is fuel economy maximized by design? What makes a fuel efficient car? There are many ways to increase the efficiency of a vehicle. This video will touch on vehicle mass, aerodynamics, drivetrain, wheels and brakes, and driving style as ways of improving fuel economy.
The Shell Eco-marathon is a global competition where students design, build, and test vehicles with the goal of going the furthest distance using the least amount of energy.
Shell Eco-marathon: www.shell.com/global/environme...
SEM Americas to be held April 9-12 in Detroit:
www.shell.com/global/environme...
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Universite Laval (2014 Winner) - • 2,824 Miles Per Gallon...
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That white one actually looks pretty damn cool. I'd drive it if it was 2wd.
Its wheels looked awesome, kinda like BBS
I have been watching your videos and I understand they are for the most part for the mechanics of how cars work, I was hoping to get a video or suggest a video on how to increase fuel efficiency, unless you already have one. Including mods that can decrease fuel consumption.
Can you do a video of the EVAP system
So, in other words, Project Integra is helping save the planet by weight reduction and making the engine more efficient?
Way to go, Jason!
Nailed it.
Nice. Simply nice.
good breakdown.
Would it make sense for a production car to use a combination of small displacment, a simulated atkinson cycle and a turbocharger ? I mean, pretty much all hybrids use atkinson style engines and most mass produced car nowdays are moving towards smaller turbocharged engines. So why not combine these two ?
How a car run 500 km on 1 litre urban concept in shell-ecomarathon make a video on this topic
I don't even wonder that a car can drive only one wheel
really interesting to learn details of fuel efficency
Are you going to Detroit this year? I will be there so I hope I will see you there!
I believe so!
wait.. you went to shell and they didnt show you the brick 1959 Opel P-1 Hardtop that got 367MPG just modifying the engine? I think theres a website dedicated to it, and there are videos about it here on youtube
I've been searching for a community of high efficiency cars owners to join into, but i didn't find it. Hope someone can help me to find them.
Car safety video soon?
Hey Jason, a question about aluminum frames.
Does aluminum lose its structural integrity after being bent? And by using that for example, the new F-150, being in a big enough accident to bend the frame, would that automatically deem it unsafe for road use after being repaired?
Thanks.
I believe the F150 still uses steel in the frame, the body is aluminum. Any metal will lose strength once plastically deformed (bent), whether it's aluminum or steel. Don't buy a salvaged car to race with!
are you going to do any video specific only to electric hybrid cars anytime soon?
It'll be great to see some numbers of what a series or parallel hybrid SI engine car can achieve in terms of efficiency, fuel economy and of course CO2 emissions.
anyway great channel i watch all of your videos they are amazing. Keep doing it! God bless
Omar Safadi Check out this playlist for now! th-cam.com/play/PL2ir4svMoaYj48N0VWoic25P9LaU2wlbA.html
I always wondered why CVT didn't take off, I think only small Fiats (and scooters) had them in Uk up until a few years ago u till lexus started using them. Large diesel trains are the most efficient way of transporting goods up and down the country and they use a CVT and a torque converter, and because they are diesel they have a 40% efficiency rate. Thanks for the video.
How much mpg is sufficient for you?
I have idea but i don't know does any use it in modern cars. If someone will mount bipolar torque sensor, so it can sense when wheels start to rotate engine, at the moment of negative torque you can shut down fuel delivery to engine, and no one will notice that. And in normal roads, it will compensate for ups and downs o the road, since engine not all the time give power to wheels, but it use fuel anyway
Actually, every modern car has such a system. It's called overrun cut-off.
Jason did you major in Mechanical Engineering? If so how's the job market for it?
Ivan Koshy Yes. There are plenty of mechanical engineering jobs out there, you just have to set yourself apart (show you're passionate through your own hobbies, projects, studies, etc.) I'm not saying it's easy. I applied to 30-40 some positions before getting my first job.
I have a question for you. In therm of fuel economy, when going down a hill, is it better to put your car in neutral and brake if needed or stay engaged in fourth or firth gear using the compression to slow you down so you don't go too fast? The technology the cars uses probably has something to do with it, can you help? Thanks!
Most diesels and possibly some petrol engines will stut the engine off on overrun, if you let it idle it uses fuel. So..freewheel with the engine idling to get distance, then if you must brake, use the engine braking before the foot brake...
How does these factors affect safety
Wow very proud of Quebec engineers that wins last year !! Its nice to see you not in front of a white board from time to time ! Those videos on Shell Eco-marathon where very interesting thanks! And I learn about those 2014 winners that are located less that 100km from where I live :O Félicitation a l'équipe de Sherbrooke et gros merde pour cette année !
On the subject of burn and coast:
Would it be efficient to have a system such as this implemented in today's or future cars?
I'm imagining how seamless BMW's engine cut-off system is in the 5 series. Could something like this be applied to a system that would replicate the burn and coast driving style, and do it more reliably?
Taking into account all other factors you've highlighted, could we squeeze any more efficiency out of our engines (all types, ICE, electric motor, hybrid, etc) in both highway and city driving? Which engines would benefit the most from it?
In city or highway driving; where would we see the most gains?
KhushbuMel Well for maintaining consistent speeds, it'd be quite challenging. But some hybrids apply a similar principle, where the battery charges, then the engine is killed and you run on battery power for a short bit, then the engine comes back on (saving fuel while it doesn't burn).
is there an effective way to eliminate brake pad contact?
zrebeKDemitri Well, bicycles manage to do it well. But you'd have to implement something to pull the pad in the opposite direction.
Does turning off your car at stop lights or whenever you are waiting inside your car save gas?
Yes, if its longer than 10-15 seconds or so (which is why start-stop technology exists).
Engineering Explained Thanks
3:00 thats a beautiful tablet, anyone know its make and model?
Reminds me of Kindle Fire HD 6 although the camera's not in the right spot.
It's a 2013 Nexus 7
electric bicycles get a really good MPG equivalent rating. at 30mph unassisted an electric bike gets around 1000mpge, at 15mph with pedal assistance they can get 4000mpge and unassisted at 20mph they can get 3000mpg
use a honda grom engine and transmission with a superlight weight body and bigger tank you can get over 100 mph
Just because an engine has smaller displacement does not necesarilly mean it is lighter than an engine with a larger displacement. there are plenty of examples in the real world of smaller engines that weigh more than engines with larger displacements
0:56 what was that word you said aluminum honeycomb what?
Dim Simo monocoque. :)
Engineering Explained thank you
Now last year I told you about the adiabatic engine which is 75% efficient ICE. I understand at the time if you were ignorant about it, but now you're not, and still choose to not talk about it why?
ghettoflyer Jason's statement is completely accurate and you own the ignorance.
An adiabatic engine: (a.) currently does not exist outside of a laboratory environment, (b.) is not commercially available, (c.) is not a production engine, (d.) even in a lab environment have numerous issues including consistency longevity and is completely unproven, (e.) the highest consistent efficiency on an adiabatic engine I have seen is 68%.
Why no forced induction
I've heard conflicting information about the whole compression ratio thing. Some think that higher compression ratios lead to higher thermal efficiency, but a lot of hybrids intentionally close intake valves late (simulating an Atkinson cycle), the rationale being that if the cylinder is at atmospheric pressure at the end of the power stroke, energy isn't wasted blasting exhaust out of the cylinder.
Stanley Meyers..... FTW
Could I just point out when you say `because drag force is exponential with speed' at 2:55, that's probably an unintentional mistake. From your formula, it's not exponential, it's just square in speed.
Obviousyl The force of drag is not linear with velocity. When you double the velocity the force of drag is 4 times greater. Therefore it is exponential. If it was only twice as much it would be linear. Can you confirm I am correct?Engineering Explained
No you're not. Drag is proportional to the SQUARE of the speed. Not the EXPONENTIAL. They are different. Square is x^2, exponential is 2^x.
But the force of drag becomes exponentially greater.
The Mater Remember that drag = Co*A*1/2pV^2. If you're comparing drag at V = 3 and drag at V = 4, then yes - the drag is increasing exponentially. However, if you'e comparing drag and V at separate points, then it's proportional to the square of the speed (V). Basically, the language changes when you're comparing the same or different variables within a window.
And lower ground clearance too...
nice shirt
Its great to make belive but it they dont get these cars on production it was just another movie .
Might I suggest not using nu as a symbol for velocity
V? For velocity?
Engineering Explained Yes, even though it's actually speed in this instance, V for velocity and not resembling nu.
Can U make a video about.Tesla Model S Tear down ...all parts explained
You can make it yourself, just loook and learn from INPLIX .
What about buying and older car and keeping the rest of money for fuel lol.....
Definitely a good project for students. Unfortunately, a car build purely for fuel efficiency is absolutely dreadful.
Eryk Kurzawa Find yourself a 6 speed TDI! :)
.. so in order to have a fuel efficient car, you must to the complete opposite of an Hot Rod ...
You sound considerably less enthusiastic narrating this video than previous episodes and was kinda a downer, otherwise informational.
Haha, bizarre that stuff like this gets picked up on. I was sick while recording, work does not wait for me to recover.
But the thiing is we have to release this kind of products to the market quickly therefore we can gain a lot of fuel efficiency from these!..........
:-o
But why Shell wants cars to be fuel efficient? They'll sell less gas.
#letter4u
Buy a rotary. Duh
Sponsored by............ Shell.
They sent me to the auto show in Detroit, least I could do!
Do you have a problem that Shell pays indirectly for 'education' for all people who are watching this video, interesting and fun experiences for Jason, great and important projects for students who work on these cars and some additional publicity for their own company? Win-win-win-win! :-)
Thanks Jason. Fuel efficiency may not be the holy grail to me; but I realize many others are interested. Great video.
theese "fuel efficient" cars are the uglyest thing ever. electric motor's efficiency is rarely over 90%. the efficiency varies a lot on the rpm, strenght of the permament magnets or the strenght of the static electromagnets.