What is the normal idle speed for a vehicle?

[StCamila]

Vehicle idle speed is considered normal between 550 to 800 revolutions per minute (RPM). The minimum rotational speed required to maintain stable engine operation is referred to as idle speed, which is one of the five fundamental operating conditions of an engine. The idle speed can be adjusted by modifying the throttle opening size and the idle fuel supply quantity. Engine types include: 1. Classified by fuel type: gasoline engines and diesel engines; 2. Classified by stroke: four-stroke internal combustion engines and two-stroke internal combustion engines; 3. Classified by cooling method: water-cooled engines and air-cooled engines; 4. Classified by cylinder arrangement: single-cylinder engines and twin-cylinder engines; 5. Classified by intake system: naturally aspirated engines, turbocharged engines, and supercharged engines.