Accelerator pumps are found in cars equipped with carburetors. When you accelerate, the accelerator pump delivers extra fuel through the accelerator pump circuit to allow the engine to deliver more power.
A pump (usually some sort of piston) located in its own pump well in the carburetor float bowl, that adds a small amount of extra fuel under high pressure into the throttle bore to make up for the momentary shortage of fuel caused by the loss of vacuum that occurs when the throttle plates are suddenly opened. 2GC‚Ì‰Á‘¬ƒ|ƒ“ƒv‚ÍŒa‚ªQ-jet‚Ì‚æ‚è‚Å‚©‚Aƒ|ƒ“ƒvŒðŠ·‚ÉŽg‚í‚ê‚éB yAdjustable off-idle air bleedzƒƒ`ƒF‚ÌƒAƒCƒhƒ‹ƒAƒWƒƒƒXƒeƒBƒ“ƒOƒXƒNƒŠƒ…[‚Ü‚Å‚Ì'Ê‹CEBƒGƒ~ƒbƒVƒ‡ƒ“ƒLƒƒƒu‚Å‚ÍHêo‰×Žž‚ÉƒvƒŠƒZƒbƒg‚³‚êA”ro‹K§‚É‡'v‚·‚éƒIƒtƒAƒCƒhƒ~ƒNƒXƒ`ƒ…ƒA‚ð‚Â‚‚è‚3/4‚·B
Part of the carburettor. A small pump that enriches the fuel-air mixture during acceleration.