accelerator pump

Enriches fuel mixture

An accelerator pump is a component in carburetors that squirts extra fuel into the engine when the throttle is opened quickly.

This prevents the engine from hesitating or stumbling during rapid acceleration, when the sudden rush of air would otherwise create a momentarily lean fuel mixture.

Related

choke · diaphragm · squirt · venturi · engine · cold start · hesitation · linkage · nozzle · jet · idle · flat spot · enrichment · pedal · rev · flooding · primer · intake

Categories
Opposites
fuel delivery function

accelerator pumpeconomizer

Energy-saving apparatus

float valve · needle valve · fuel injection

throttle response direction

accelerator pumpdashpot

Piston-based motion resistor

Family

accelerator, pump, accelerate, acceleration, accelerated, accelerating, pumps, pumped, pumping

Familiarity
Top 1,000,000
Profile
Used worldwide · Timeless · Concrete · Rated G