What is the normal RPM range for engine idle vibration?

[CarmenMarie]

550-800 RPM. Engine: Internal combustion engine, also known as reciprocating piston engine. The key difference between this type of engine and external combustion engines is that its fuel burns internally. External combustion engines, where fuel burns outside the engine, are also called Stirling engines. Jet engines refer to engines that directly generate thrust by high-speed airflow ejected from nozzles, widely used as power units for aircraft. Fuel and oxidizer undergo chemical reactions in the combustion chamber to release thermal energy, which is then converted into kinetic energy of airflow in the nozzle. Electric motor. Function: The device that provides power for automobiles, determining their power performance, fuel economy, stability, and environmental friendliness.