While that word means “power measurement device,” in practice the engine’s torque and rpm are measured and its power is calculated using the formula cited above.

H = T x rpm/5252. In this formula, H is horsepower, T is torque in pound-feet, and rpm is how fast the engine is spinning. The 5252 is a constant that makes things work, ensuring you don’t have ...

The formula that explains this is HP=Torque x RPM /5,252. This equation goes for every internal combustion engine and can be verified at any RPM that unit is capable of, and 5,252 is a constant.

People are familiar with the formula horsepower equals torque times rpm divided by 5,252. So if you have more torque at, say, 5,000 rpm, than the guy in the other lane, you’ll have more ...

In this case torque = (power x 5252) divided by rpm. If you wanted to know how much torque is required to produce 300hp at 4600rpm the answer would be 300x5252 ÷ 4600 which equates to 343lb ft.

Kilowatt is a function of torque and revolutions per minute and is calculated as following: Power (kW) = torque (Nm) x speed (revolutions per minute, or RPM) / 9.5488. So how does my car’s engine make ...