Petrol engine – Wikipedia

Petrol engine (British English) or gasoline engine (American English) is an internal combustion engine with spark-ignition, designed to run on petrol (gasoline) and similar volatile fuels.. In most petrol engines, the fuel and air are usually pre-mixed before compression (although some modern petrol engines now use cylinder-direct petrol injection).The pre-mixing was formerly done in a …

https://en.wikipedia.org/wiki/Gasoline_engine