What is the relationship between car torque and RPM?

[DelFelicity]

The relationship between car torque and RPM is that the higher the RPM, the lower the torque, and the lower the RPM, the higher the torque. The impact of torque on the engine and the impact of RPM on the engine are as follows: Impact of torque on the engine: The torque of an engine refers to the moment output from the crankshaft end. Under a fixed power condition, it has an inverse relationship with the engine RPM—the higher the RPM, the lower the torque, and vice versa. This reflects the vehicle's load capacity within a certain range. Impact of RPM on the engine: The tachometer visually displays the engine's RPM under various operating conditions, allowing the driver to always be aware of the engine's operation. By coordinating with the transmission gear and throttle position, it helps maintain the engine in its optimal working state, which benefits fuel efficiency and extends engine lifespan.