spark-ignition engine


spark-ignition engine

[′spärk ig¦nish·ən ‚en·jən] (mechanical engineering) An internal combustion engine in which an electrical discharge ignites the explosive mixture of fuel and air.

spark-ignition engine

A form of reciprocating engine in which the fuel-air mixture in the cylinder is ignited by an electric spark. This occurs when the piston is in the correct position during the compression stroke.