How to Calculate a Car's Horsepower?

[McBennett]

The horsepower of a car refers to the unit of engine power, representing the engine's ability to perform work within a unit of time. The calculation formula is: Power (kW) = Torque (N·m) × RPM / 9549. Below is a detailed introduction to car horsepower: 1. Overview: Horsepower symbolizes how much air-fuel mixture the engine can intake per unit of time. When the throttle is increased, the engine speed gradually rises to the point of maximum torque. Although the intake volume per cycle reaches its peak, the number of intake cycles continues to increase as the RPM rises, allowing horsepower to continue increasing until it reaches its maximum. 2. Function: A car's horsepower can be used to evaluate its performance. However, the performance of a car cannot be judged solely by horsepower and torque; it also depends on the matching of the transmission, tires, and the design of the car body.