- The lowest speed at which an engine operates smoothly when it is not carrying any type of load. In the case of aircraft engines, it is the engine RPM when the throttle or power control lever is fully closed. In cold weather conditions, it may be necessary to keep the engine RPM of a reciprocating engine higher than idle to keep the engine running.
Aviation dictionary. 2014.
Look at other dictionaries:
Idle speed — is the minimum operating speed (generally measured in revolutions per minute, or rpm, of the crankshaft) of a combustion engine. At idle speed, the engine generates enough power to run reasonably smoothly and operate its ancillaries (water pump,… … Wikipedia
idle speed — This is the speed of the engine with the following conditions: The transmission is in neutral (or park in automatic transmissions), the engine is fully warmed up, the choke butterfly is fully open, and there is no extra accessories in operation… … Dictionary of automotive terms
idle speed stabilizer — A device which ensures steady engine rpm at idle speed. An electronically controlled air bypass around the throttle. Also called idle speed actuator or a constant idle system … Dictionary of automotive terms
idle speed control — (ISC) maintains the idle speed of the engine at a minimum level. There are currently two types of computer controlled idle speed control: DC motor ISC and air bypass ISC … Dictionary of automotive terms
idle speed control motor — (ISC) and ECM controlled motor that extends or retracts a plunger that contacts the throttle level, which regulates the position of the throttle valve to compensate for an additional load, such as the air conditioner, power steering pump, etc. On … Dictionary of automotive terms
idle speed actuator — An electronically controlled air bypass around the throttle. Also called idle speed stabilizer or a constant idle system … Dictionary of automotive terms
idle speed adjustment — The alteration of the engine idle speed … Dictionary of automotive terms
idle speed screw — A screw located at the bottom of the carburetor on the outside which keeps the throttle from closing completely when the vehicle is idling and thus controls the idle speed. This is adjusted as part of a basic tune up … Dictionary of automotive terms
speed —  The average rate at which an object is travelling. Measured as a relationship of distance per time e.g., meters per second (m/s), kilometers per hour (kph or km/h), feet per second (ft/sec.), miles per hour (mph), or revolutions per minute… … Dictionary of automotive terms
Idle — For other meanings, including people named Idle, see Idle (disambiguation). Idle is a term which generally refers to a lack of motion and/or energy. Uses In describing a person or machine, idle means the act of doing nothing or no work (for… … Wikipedia