Quote:
Originally Posted by gwyllion
Sorry, but this is elementary physics: power = speed (~torque) x speed (~revs). Diesel engines don't rev. So in order to produce the same power as a petrol engine, a diesel engine needs more torque. Just look at production cars: - BMW 335d: 210 kW (286 hp), 580 Nm
- BMW 335i: 225 kW (306 hp), 400 Nm
Even though the diesel engine has slightly less power, it has more torque.
Also the ACO has already the highlights of the 2011 engine rules: petrol 2 liter single turbo vs diesel 3.7 liter twin turbo. So clearly diesels will retain their torque advantage. |
Max power is illusory
Power = troque(force) x speed of the engine. Power "on the ground" by every unit of time in the average of the length to be measured is the key. An engine to achive 10K RPM has to pass from 3/4K RPM all up to 10K RPM... by the time those obsolete petrol engines achieve its max power superior to diesels they have already lost half mulsane straight, because their torque is so much inferior!...
Wrong assumption if you think its a question of fuel for torque... its a question of efficiency... simply "petrol" can't allow it to be superior to diesels because of its physical and chemical properties... yet there are already petrol engines that function on the principles of diesels... no spark plugs... high pressure combustion ignition instead. But i'm afraid they will always be inferior to diesels, because would not have higher compression rates compared to diesels, and OTOH then they will not be able to rev so high as now... and the scum oil lords will oppose it because no more psychological mind control game with noise( engines more silents)... and more fuel efficients...
But to see clearly the current paradigma, as example, what good would be to have a 10 liter engine, be it any fuel you like, if it has to get its "AIR" through a "cocktail straw" diameter size pipe ???? ... the engine would not even start...
A 2 liter petrol engine with 3 times more "air restrictor EFFICIENT possibilities" would beat a 7/8 liter diesel engine any time. F1 1.5 liter
UNRESTRICTED turbo engines achieved more than 1000 HP at the Dynamometer... 4 cylinder inline, single turbo with 4.2 bar turbo pressure.... doesn't matter if VGA or whatever, what counts is the max pressure... but that was in the time when F1 cars had 300 liter tanks, lasting half GP length, meaning 2,7 miles/gallon... meaning in lemans a stop every 7 laps or so for refuel ( if the pilot as a little sense in the max pace) with a 90 liter tank... (they could never win lemans).
All being equal, petrol engines will always lose because they are the least efficient.
So what matter are the "AIR restrictors and the weight". Those 5.5 liter lemans diesels with the restrictors of 2006, could be achieving 8K RPM or more by now, and close to 1000 HP... a beating so severe to petrols with that enormous torque acceleration then possible, that ACO by command of the oil scum, put sizable restrictions for "air restrictores" and "weight" on the diesel cars right next year...
No wonder ACO is in disarray with new rules every year... supposedly they want to be fair to all contenders, but the oil scum doesn't let them... not even a new contender with a diesel engine is allowed to enter, Nissan or Toyota could have had it already, UNLESS NOBODY ELSE WANTS TO WIN Lemans but Audi and Peugeot...
Though when everything started those 5.5L diesels had ~650 HP at 5K RPM... what have they saw( the oil scum) that panicked them that we can't hint ??...
... is it that diesels CAN rev high to ??... not has much as petrols because its explosive nature of combustion make them harder to achieve the proper mechanical balance of its moving parts ?? ... yet achieve close to 20% superior fuel consumption efficiency with an equal or superior overall efficiency ??
So don't get surprised if those 3.7L diesels achieve 8K RPM and the times per lap in 2011 are very close to the times of 2010... he!... that is why the "restrictor rules" have not yet came out... or are in a limbo... the scum lords have the last word... and i bet they(restrictors) will not be equal for diesels and petrol.
Comparative with commercial cars are nonsense. The engines are with different purposes and marketing... different dynamic management and control of the engines. If it were to take the max performance possible out of a same engine volume, to match oranges with oranges in that department, with could bet with 100% certainty to win on the diesel.