

Audi e-tron
Concept has four electric motors and a single battery pack








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RE: <Drool>
By theapparition on 9/17/2009 3:58:35 PM , Rating: 2
No. It measures that high number and then back-calculates through input parameters to determine theoretical engine torque.

That's why I stated before the the concept of rwtq is flawed, yet often quoted (hell, even by myself). Yet what is being delivered to the tires is quite different.

In fact, dynojets don't even measure the engine RPM on older cars, rather use the tire diameter and tire RPM to generate those graphs.

For a simple ballpark figure, take the engine power and divide it by tire RPM. Power = Torque * RPM/5252.

So if an engine is developing 300hp at 6000RPM, and there is a 10x reduction through gearing, than the torque being delivered is 300hp*5252*(6000RPM/10) = 2626ft-lbs.

Pretty simple, and also requires that a dynojet knows what size rear differential and what gear the car is being operated in. Otherwise the results are junk......and also how some unscrupulous tuners like to improve thier results.

