What does RPM mean in cars?

[DelMadison]

RPM is the abbreviation for "Revolutions-per-Minute", which represents the engine speed per minute. Here is some relevant information: 1. Generally speaking, a faster engine speed can provide more power. The engine drives piston movement by burning air and gasoline, thereby driving the crankshaft to provide power to the vehicle. This force converted to the crankshaft is what we call torque. 2. The higher the RPM value, the more air and gasoline need to be burned, resulting in greater power. For drivers of manual transmission vehicles, RPM is one of the criteria for determining whether to shift gears. When the RPM is too low, it is necessary to downshift to obtain more power, while excessively high RPM can have adverse effects on the engine (especially when entering the red zone). 3. The RPM value that produces maximum power varies depending on different engines, but generally it is best to avoid the tachometer entering the red zone to prevent damage to the engine.