Pajero Owners Club of South Africa

I see it as

"The more torque you have the less revs you need to do work (KW)"

I see it as engine-momentum vs brute power...

hehehe, I just want lots of both!!!!!

I see it as Torque = crawling power, KW = overtaking on the highway power.

Torque is the turning moment / 'twisting force' (Nm) excerted by the crankshaft, while the power (kW) is the amount of this force being excerted (work done) over a period of time.

Sitting in a diesel,you torque(nm) about the bliksem that flew past in a petrol (kw)

Gerhard,

You offered this explanation some time ago on another website. I was convinced that you had solved the riddle for me.

BUT, the more I think about it, the more your explanation sounds like the effect of gearing.

May I ask, how and what is measured when torque and power figures are published?

Roelf

The only items necessary to measure and engine's output (torque as well as power) are

• torque
• rpm

A dyno measures the turning moment an engine has, by seeing what brake force on the rollers it can resist.
There is a direct relationship between torque, power and rpm.

Power (kW) = Torque (Nm) x rpm / 9549

Gearing: In classic physics, a 'gearbox' is called a 'torque-multiplier'.
The torque (turning moment) in a low ratio is obviously higher than in a high ratio.

Gerhard,
FINALLY.... a formula!!!!
The apple has at last fallen on my head.
Thank you
Roelf

Its simple

Torque is the forced that gets things going, Power is the force that keeps things moving

Torque is actually a product of the engines ability to move air through it. One reason that Diesels have more torque is that they do not have a throttle valve, so throttling losses are minimum. Many newer vehicles have variable inlet manifolds, these are manifolds that can change their length (or at least change the distance the air travels).

Long manifolds-low rpm= high torque
short manifolds-high rpm= high power

Hope this helps.