A spark-ignition engine (SI engine) is an internal combustion engine, generally a petrol engine, where the combustion process of the air-fuel mixture is ignited by a spark from a spark plug.

A Spark Ignition (SI) engine is a type of heat engine that converts energy from heat to mechanical energy by mixing fuel and air, which is ignited to initiate combustion. Fuel can be introduced into the …

Mar 26, 2025 · An SI engine, or spark ignition engine, is a type of internal combustion engine where the air-fuel mixture is ignited by a spark plug. This distinguishes it from compression ignition (CI) …

It is an internal combustion engine in which the ignition of the air-fuel mixture takes place by the spark. The spark is generated with the help of a spark plug.

The spark ignition (SI) system is the mechanism used in most gasoline engines to initiate the controlled energy release that powers a vehicle. It relies on a precisely timed electrical discharge to ignite a …

Mar 1, 2025 · Spark-ignition (SI) engines, also known as gasoline engines, are a type of internal combustion engine that uses a spark plug to ignite the air-fuel mixture within the combustion chamber.

Jun 11, 2025 · Spark ignition refers to the process by which a spark plug generates a high-voltage electrical discharge to ignite a mixture of air and fuel in an internal combustion engine.