2007 spec V8 IDLE RPM - ?

[modbaraban]

Hi,

I heard that the V8s have much higher idle rpm than the V10s.

I wonder what the actual idle engine speed is for a 2007 V8?

thnx

[modbaraban]

I can't believe that nobody knows

[pyry]

who cares, its around 5-7k rpm.

[modbaraban]

who cares

I'm modeling a 2007 V8 engine for an F1 sim

[bizadfar]

who cares

I'm modeling a 2007 V8 engine for an F1 sim

Good luck.... It's about 4400rpm. 2007? Can't be too different.

I have a modelled BMW 2006 engine with help from engineer in Munich

[Belatti]

Does someone know why such a high RPM IDLE???

An F1 Engine should have very low internal friction and because of that it shouldn´t stall even at very low RPM´s

Maybe the high Idle is set up for some purpose like preventing the engine to stall under spins... but that´s only my speculations

[checkered]

Discussed on

this thread (link), albeit a bit superficially. If you dig deeper, you're bound to find a more complete answer, I'm sure.

[countersteer]

snip from link

"Axel Plasse: F1 engine minimal rev is at 3000 or 4000 rpm. The main reason is the light weight of engine pieces (no flywheel for exemple), which means a stable lower revving is very hard to obtain."

The V-10 has 25% more firing pulses than the V-8. As noted above, there is no flywheel to speak of which would store energy between firing pulse which would "smooth" the idle. Therefore, the higher rpm.

Small engine econoboxes with 4 cylinder motors have relatively heavy flywheels for the same reason.

[Belatti]

Thank you guys, its all clear now.... my small "RAM memory" didn´t remember the low inertia moment those engines has...

[ruud.]

christian albers was just on dutch television with an interview of the financianciel channel, spyker cars is doing dramaticly bad on the index thats why. There was a complete history of spyker f1 cars, and the choises made.

christian albers declared choosing an ferrari f1 engine was more an marketing stunt, than a technical one. Also he said, this engine run over 4000 rpm idle, but with braking for a corner, the car wanted to push further because of the high idle. Nobody had the right equipment to get that idle rpm down ( which is quite q laugh) so after a few races they finally got it @ 3000 rpm which solved the problem.

[megz]

If he had the car at idle underbraking he must be wasting ALOT of time.