Excerpted was written by BY BRIAN SILVESTRO
Here’s a simple overview.
We throw horsepower and torque figures around all the time when talking about cars. They’re a vital part of any spec sheet. But do you actually know what those numbers represent? Jason Fenske of Engineering Explained put together a simple video demonstrating what “horsepower” and “torque” actually mean, what these numbers represent, and how they’re connected.
Torque is simply a force acting on something from a distance (i.e. a piston pushing down on a crankshaft, using that leverage to rotate it), while horsepower is torque multiplied by RPM, or a measurement of how quickly an engine can accomplish a certain amount of work.
Ultimately, when it comes to measuring things like top speed and acceleration, it’s horsepower you have to look at, since it’s the figure that explains how much an engine can accomplish in a certain period of time.
Let’s take a look at Power vs Torque: