汽油机化油器的回火现象,俗称“放炮”。这是由于汽油机的可燃混合气在燃烧行程时燃烧不完全,因此出现的补燃现象。甚至此补燃一直延续到整个排气过程。以致剩余废气在下一循环的进气过程开始时窜入进气管及化油器,引燃了新鲜混合气,使新鲜混合气在未进入燃烧行程之前就在进气管及化油器中燃烧,而出现放炮现象。 Gasoline carburetor tempering phenomenon, commonly known as “blast ”. This is because the flammable gas mixture of the gasoline engine burns incompletely during the combustion stroke, so that the burn-in phenomenon occurs. Even this burn up continues throughout the exhaust process. So that the remaining exhaust gasses into the intake pipe and carburetor at the beginning of the next cycle of intake and ignites the fresh mixture so that the fresh mixture will burn in the intake pipe and carburetor before entering the combustion stroke. Appear blasting phenomenon.