accelerator pump

accelerator pump

[ak′sel·ə‚rād·ər ‚pəmp]
(mechanical engineering)
A small cylinder and piston controlled by the throttle of an automotive vehicle so as to provide an enriched air-fuel mixture during acceleration.

accelerating pump

A pump in a carburetor of a reciprocating engine that provides a rich fuel-air mixture when the throttle is suddenly opened. This permits proper acceleration of the engine. Also called an accelerator pump.
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Inspection revealed the accelerator pump discharge tube detached from the boss and had become lodged between the throttle plate and the carburetor throat, inhibiting throttle movement.
Technicians inspected and found the accelerator pump discharge tube had detached from its boss, then lodged between the throttle plate and the carburetor throat, inhibiting throttle movement.
Teardown of the carburetor (model and p/n MA-3PA and 10-5267, respectively) revealed metal shavings in the accelerator pump circuit.
Used with an ARM9-KVM combination running at 200MHz, the accelerator pumps Java execution to 1300 Embedded Caffeine Marks.