Mercedes Created The World’s Most Efficient Racing Engine



Mercedes Achieved A 50% Thermal Efficiency Engine
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Mercedes has developed the world’s most efficient internal combustion engine used in automotive racing. With a test engine developed for Formula 1, Mercedes has exceeded thermal efficiency greater than 50%, a remarkable achievement for the automotive world.

This achievement is a result of many, many different technological strategies and improvements throughout the power unit. Two of the major strategies will be discussed in this video, which include the MGU-H, as well as pre-chamber ignition allowing for lean burning.

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42 thoughts on “Mercedes Created The World’s Most Efficient Racing Engine

  1. baliktad8 says:

    MGU-K stores energy from braking, not the MGU-H. The MGU-H is used to keep the turbo spinning to prevent turbo lag.

  2. DersNoNem says:

    For some reason I always have in thought that by learning to improve the car performance, it will help us to improve the economy of an engine
    Do a CVCC video after this!

  3. Chrx x says:

    Such a basic concept, but a brilliant idea.

  4. rallyrat says:

    Maybe all the fuel is injected into the pre chamber and then ejected into the cylinder upon ignition. That would cool the wall separating the pre and main chambers. Much of the fuel injected during the intake stroke might find its way into the main combustion chamber, while the air entering the pre chamber during the compression stroke might tend to keep fuel inside. That would allow the fuel ratio between the two chambers to be tuned: earlier injection for a greater proportion in the main chamber, later for greater proportion in the pre chamber.

  5. Fir3Chi3f says:

    Love it EE! I did not even know I wanted to know this

  6. i enjoyed this. im now angry at automotive industries, for not making good cars.

  7. Keita Linden says:

    huehuehue. you said "shaft" ( ͡~ ͜ʖ ͡°)

  8. injector points at an ​opening in pre-chamber when the valve is open, the rest is obvious

  9. Patrick Co says:

    This guy is good he should make youtube videos

  10. Mycel says:

    and here I was thinking that they just used very fast cars.

  11. Death Seeker says:

    How much would it affect performance if the pre chamber was made bigger or smaller? Is there a fixed ratio of size of pre chamber to the cylinder for maximum efficiency? Thank you.

  12. Please try and include a TL;DW that would be pretty cool

  13. porkpig350 says:

    a little like honda's CVCC…"compound vortex combustion chamber" of the 80's

  14. Wheres BMW? Oh yea still being fixed

  15. rijste94 says:

    What about the added mass of the shaft. I imagine it would hamper the spooling up of the turbo.
    Perhaps it isn't such a problem. Keep the speed up.

    Or make it lighter with a composite.

  16. So it works like the idi diesels form from the 30s to 90s but with gas

  17. Will we see the pre-chamber thing in consumer vehicles boosting mpg any time soon? I assume the mhgu is not that different from a Hybrid.

  18. Couldn't you mechanically cause a higher vacuum level in the pre chamber to cause a richer air fuel mixture while still using a single fuel injector??

  19. Colin W says:

    I think two other big reasons on why Mercedes are so dominant in F1 right now separating of the hot side from the cold side of the turbo with channeling passing air directly on said cold side(the compressor) and prioritizing getting the hot exhaust gases directly to the hot side(the turbine) with the shortest route possible and not worry about the timing of the exhaust pulses by means of unequal length header exhaust manifolds. I could be wrong but I think Renault and Ferrari F1 engines still have a nest of snakes type headers channeling their exhaust to their turbos.

  20. stickloaf says:

    taking recent German cheating and lying into account im going to be the first person to call BS on this…the 50% number is just propaganda to keep the ICE alive longer…diesals are 30 perecent! im not buying 50 from a gasoline powered engine

  21. George Fox says:

    Can you say 70's Honda CVCC? What's the difference except turbo, Jason? 'Splain dat!!

  22. Colin W says:

    Jason, this Mercedes F1 engine scheme looks like an updated version of Honda's CVCC engine introduced here in the 1970's with the Civic with super rich prechamber supporting ignition of the main combustion chamber which is using a super lean A/F ratio hence great gas mileage. Can you speak on my observation???

  23. If the cylinders burn a leaner fuel-air mixture (oxygen rich), is Mercedes changing the way this engine is cooled? I'm sure the materials chosen are already capable of transferring these harsher F1 environments (pressures & temperatures), but I'm curious to know the downside to this operation.

  24. These f1 engines are a marvel of enginnering but no so much a marvel of entertainment. Thanks jason.

  25. Thefarmhelp says:

    Why is regular cars not using this tech? It would be good for the environment and the economy to use this…

  26. I wonder how this rich fuel mixture will affect emissions? Will soot be formed in the pre-chamber?

  27. RandomDude says:

    Sounds like Mazda SCCI

  28. Sam Gray says:

    Not to make you reveal your sources, but I'm curious where this information is for the public? Is there an MB F1 release and I'm just lazy to look it up?

  29. Nate Caraway says:

    This reminds me a bit of how Mercedes had their prechamber setup with some of their indirect injection diesels

  30. I really enjoy the whiteboard videos man. If these videos were available back in 2003 when I started the university, I would have chosen to be an automotive engineer/mechanic. Keep up the good work!

  31. I wounder if Mercedes is using 1 fuel injector in F1, by feeding both the pre chamber and the port at the same time via a y pipe of some kind. makes you think or at least speculate.

  32. Just as efficient as a 2-stroke diesel…

  33. SlickRickOne says:

    Kinda looks like a modern and refined version of Honda's CVCC.

  34. Awesome video!

    I just have one question…

    If they somehow put a stronger fuel injector (that pumps in more fuel, perhaps dumps the fuel on the intake time, because vaccum), the pre-chamber will get a very rich mixture, while the excessive gasoline will somehow pour into the main chamber, and make the mixture lean, while the pre-chamber is rich?

    That way you would not need two injectors, just one with some very large holes, or better fuel flow…

  35. roguedogx says:

    I can't wait to see this on a production car. I'm guessing some version will make it on to the project 1.

  36. 1320crusier says:

    The injector is a 'conventional' direct injection injector. What they do is spray through the TJI manifold then calculate a second injection event accounting for fuel that remained in the manifold and such. So the second event may not spray the entire added 3% due to fuel still within it.

    The 2014 C7 Corvette (which is direct injection) ECM has provisions for dual injection events and would likely be able to run this sort of system if the cylinder head could fit the manifold.

  37. Milky Way says:

    Mannn you are kinda boring

  38. i wonder how does this chamber perform with burnred exhaust gasses when exhaust valves open ..

  39. shinybaldy says:

    I know a lot of F1 traditionalist hate this era, but I love the improvements in performance being made despite no refueling and increasingly small displacement engines.

  40. i think merceded wasted their money and time for a short term profit.
    tesla will lead the automobile industry. They should concentrate on electric car technology

  41. the_L3G. says:

    Sponsored by Mercedes

  42. Wonder why you don't see this in road cars. Maybe not as reliable? I can imagine you have to use some pretty clean fuel to avoid carbon buildup plugging the ports from the pre chamber.

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