What is the relationship between engine torque and power?

[DelLeah]

Power and torque are related by the formula: Power (W) = Torque (Nm) × Speed (rpm) × 2π/60, which can be simplified to Power (kW) = Torque (Nm) × Speed (rpm)/9549. The meanings of automotive power and torque are as follows: 1. Power refers to the work done by the car per unit of time. The greater the power, the greater the torque, and the higher the pulling force of the car. Maximum power is commonly used to describe the dynamic performance of a car, and it is usually expressed in horsepower (PS) or kilowatts (kW). 2. Torque refers to the moment output from the crankshaft of the engine. Under a fixed power condition, it is inversely proportional to the engine speed—the faster the speed, the smaller the torque, and vice versa. It reflects the load capacity of the car within a certain range.