[WEC] Toyota LMP1 Discussion

[hcl123]

Originally Posted by GasperG

I was talking about Torque, Torque in diesel engine can drop but the power remains or even increases (power = torque * rpm), going even higher it starts to drop quickly.

Torque curve in NA petrol is a lot more even (level) in that 3.7 L you are looking at 300-400 Nm through the whole rpm range, but this means a very steep power curve, diesel engine has a lot more level power curve.

So was i. And so no!... its more like a flat torque curve from 4k to 4.6K RPM... torque curves can't drop so much as in a petrol (NA like Toyota or turbo like Porsche) because the compression ratios are higher, meaning the rotational momentum might not be enough to continue accelerating under such scenario.

( its the diesel creeping factor, "compression pumping loses"... that is why higher turbo pressures under all regimes ( and or pre-heating and activated diesel fuel ) seems so compelling and are more effective than in a petrol ( the higher the admission pressure and or reactive fuel, the faster the combustion, making diesel a naturally turbo engine)... perhaps why the reason Audi thought about a MGU-H coupled to the turbo turbine, there is more than turbo-lag )