noun
deflagration
Technical term in combustion science: rapid burning that propagates through a gas or across the surface of an explosive at subsonic speeds, driven by heat transfer.
爆燃は爆轟より穏やかな燃焼現象である。
Deflagration is a milder combustion phenomenon than detonation.
noun
knocking; engine knock
Automotive engineering term: abnormal combustion in a spark-ignition engine where the air-fuel mixture ignites spontaneously before the flame front arrives, causing a knocking sound.
エンジンの爆燃を防ぐために高オクタン価ガソリンが使われる。
High-octane gasoline is used to prevent engine knocking.