This site describes F1 direct injection scheme; looks like stratified
charge with a pre ignition chamber. An injector in both chambers.

<http://www.enginelabs.com/news/f1-tech-what-is-turbulent-jet-ignition/>

I neglected to report they claim  BSFC is 200g/KW/Hr with an F1 V6. I
translated that to be .33

Robert LeClercq



Robert,

I could not find the claim of 200 g/kWh. However it true it actually translates to 43% efficiency in my books.

Searching for efficiency of F1 engines one answer was: "Race *fuel consumption* rate is normally around 75 l/100 km travelled (3.1 US mpg, 3.8 imp mpg, 1.3 km/l). That may refer to the older V8 engines.

Very rough (in metric): A road car burns near 10 L/100 with a near 300 hp engine. The F1 engine 600 hp (engine alone) could burn 20 to 25 L/100 km. 75 L / 22.5 L (average) is 3.3 times as much fuel. The road engine is near 33 - 35 % efficient / 3.3 is near 10% efficiency for the F1 engine which is about right.

Another statement on the net said, quote: " The thermal efficiency of Mercedes' class-leading hybrid F1 engine has now exceeded 45 percent, with 50 percent thermal efficiency a very real target in the next couple of seasons."

Something is amiss here. The calculation likely is based on a combined ICE and E-motor calculation that is false like the initial claim for the Chevy Volt in comparison to the Internal combustion engine. What they do is comparing the battery energy in kWh to the energy content of the fuel. The fuel is chemical energy that needs to be converted to mechanical energy at an efficiency anywhere form 35 to 45% depending on the industrial power plant making electricity. Electricity is mechanical energy.

Often people say that electric motors are 90 to 95% efficient vs the ICE only 30 to 40 or so. Apples and oranges. A really silly comparison as fossil fuels and electricity are not the same. Fuel is chemical energy and electricity is mechanical energy that first has to be made form fossil fuels (or wind, sun). You cannot set both equal. However, that is what is being done and that is why these high efficiency numbers come from for F1 and Chevy Volt. Such numbers are totally unrealistic. Is is to fool the public to give the impression that the electric car is far better the the ICE.

Here is a 5 minute video, brand new from March 24, 2017 on the subject of GW science:
Steve Milloy - Draining the Climate Swamp <https://www.youtube.com/watch?v=vXZ3c5UkkCA>

   Steve Milloy - Draining the Climate Swamp

12th ICCC in Washington D.C. 24th March, 2017. Steve Milloy of Junk Science fame, talks on the need to go ahead ...


<https://www.youtube.com/watch?v=vXZ3c5UkkCA>


Rolf Pfeiffer

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