混こん合ごう気きこんごうきMeanings1nounair-fuel mixtureTechnical term used in internal combustion engine contexts; refers to the mixture of air and fuel before ignition.エンジンの性せい能のうは混こん合ごう気きの質しつに大おおきく左さ右ゆうされる。Engine performance is greatly influenced by the quality of the air-fuel mixture.