Torque Vs. Hp

[simplegreen]

Torque Vs. Hp


Engine Power - Torque Vs HP
From: rnott@ocs1.ocs.mq.edu.au
To: bmw-digest@lists.balltown.cma.com
Subject: Re: when did e28 go motronic
Date: Fri, 8 Mar 1996 17:16:22

In Australia the E28 went motronic in 1986. This is also the year they
introduced unleaded petrol w- catalytic converters, forcing them to
dump the 2.8 liter for the 3.5. This engine had the same power (136Nm),
but had bags more torque. Torque wins races (it's what gives your car
it's get up and go) and is set by the capacity (size) of the engine. So even
though this engine had no more power (kW) than the 2.8, it had much
better acceleration.

Engine Power or Kilowatts though, is determined by the engines
Torque multiplied by it's RPM's and is affected by your engines
ability to breath - exhaust restrictions) .

Torque * RPM
Horsepower = ------------
5252
To sum it up, an Engine's Torque is determined by it's capacity, but it's Power
(KW) is is also determined by it's ability to breath (restricted by the catalytic converter, etc).
( See: Catalytic Converters Regarding Benefits of Backpressure and Effect on Performance Ed. )

Cheers,
Richard