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+--- Thread: Om606 max fuel consumption (/showthread.php?tid=8078)
Om606 max fuel consumption - Slaider - 07-05-2018
Hey. I'm thinking about om606 race car project for long distance (enduro) racing. Is it crazy ?
If i make about 500hp engine what maximum fuel consumption I should expect in racing mode ?
Thank you
RE: Om606 max fuel consumption - baldur - 07-05-2018
It depends on a lot of things, air:fuel ratio, injection duration, injection timing, turbo compressor efficiency, efficiency of the intake tract.
RE: Om606 max fuel consumption - Slaider - 07-06-2018
OK, 7.5 pump elements and 3.0bar boost, what fuel consumption could be on full attack racing mode? 20L? 30L? 40L/100km?
RE: Om606 max fuel consumption - baldur - 07-06-2018
I made a calculator for this a while ago http://foo.is/calc/dieselpower.html
but the BSFC figure is the big unknown. An efficient engine can easily be around 0.4 in BSFC but I think 0.5 is more realistic for a prechamber engine at full power, they do get hot when run at full power for long. A naturally aspirated drag racing V8 is below 0.4, a factory turbocharged petrol engine on the street is closer to 0.6 when running flat out due to how rich it runs (lambda 0.70 is typical, some even richer).
Generally speaking your engine is the most efficient when you are pumping only enough air to burn all of the fuel, but if the engine has poor combustion it needs more air to consume all of the fuel than an engine with good combustion.