Definition of precombustion chamber
: an auxiliary space in which combustible gases are ignited and combustion started ahead of the main combustion chamber of a jet or gas engine
- The glow plug is an electrically operated device that protrudes into the precombustion chamber. When energized the glow plug tip heats to a dull red. The swirling, highly compressed air-fuel mixture is heated by the glow plug tip.
- —Auto Fundamentals
