What is RPM in automobiles?

CARS.COM — RPM stands for revolutions per minute, and it's used as a measure of how fast any machine is operating. In cars, rpm measures how many times the engine's crankshaft makes one full rotation every 60 seconds, and along with it, how many times each piston goes up and down in its cylinder. read more

RPM is the acronym used for revolutions per minute. It measures the number of revolutions completed in one minute around a fixed axis, giving the speed of a mechanical component. It is commonly used to describe the performance of automobile engines. read more

RPM is rotations per minute. In automobiles rpm is associated with the speed of the engine which is measured at the output shaft or flywheel. For example, the speed of the engine is 1200 rpm. Which implies that the output shaft is rotating at a speed of 1200 rotations per minute. read more

A car's engine revolves at changing speeds depending on how hard the car is working. Gears on the car change when the engine begins to work too hard. RPM is a way of measuring how hard the engine is working. read more