What is an Engine Overrun?
Engine overrun occurs when the throttle is closed but the engine continues to run. This is because the inertia of the spinning crankshaft and other rotating components in the engine causes it to continue to turn. The air flowing into the engine during this time keeps the engine running.
Engine overrun can be a problem because it can cause the engine to overspeed, which can damage the engine. It can also cause the engine to run rough and stall.
To prevent engine overrun, the engine must be equipped with an idle speed control system. This system controls the amount of air that flows into the engine when the throttle is closed, which prevents the engine from overspeeding.
Related Questions:
- What causes engine overrun?
- Engine overrun occurs when the throttle is closed but the engine continues to run due to inertia.
- What are the problems caused by engine overrun?
- Engine overrun can cause overspeeding, rough running, and stalling.
- How is engine overrun prevented?
- Engine overrun is prevented by using an idle speed control system that regulates air flow.
- What is the purpose of an idle speed control system?
- An idle speed control system prevents engine overrun by controlling air flow when the throttle is closed.
- How does an idle speed control system work?
- An idle speed control system uses a valve to regulate air flow and maintain a consistent engine speed.
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