Do you know how engine power is calculated in vehicles?

(Patria) - When a vehicle comes to a dynamometer, this device measures the engine's torque, and a special formula is needed to show its power.

Namely, it is necessary to multiply the torque (Nm) by the engine speed (rpm), and then divide everything by the constant 9549. The result will be the power in kilowatts (kW). To get horsepower, multiply this value by 1.35962.

The HP designation, according to the German standard, is defined as "the power required to lift a mass of 75 kilograms (acting with a force of 75 kiloponds) to a height of 1 meter in 1 second".

Otherwise, since 2010, the European Union has enacted a regulation that power must be officially expressed in watts or kilowatts. Horsepower, well-known and dear to us, can only be used as an additional unit in the EU.