Throttle control for a small engine

Details Throttle control for a small engine Throttle control for a small engine

2005-08-16

2005-08-16

Solis, Erick (Department: 3747)

Internal-combustion engines

Engine speed regulator

Specific throttle valve structure

C123S361000, C123S399000

Reexamination Certificate

active

06928981

ABSTRACT:
A speed control apparatus for an internal combustion engine including a poppet valve seat and a poppet valve pintle assembly disposed coaxially for variably regulating the flow of air into the engine across the valve seat. The pintle is axially positioned by a stepper motor actuator responsive to an engine speed sensor and electronic controller. The controller varies the axial position of the pintle in accordance with a programmed algorithm to provide any desired engine speed, and especially a fixed engine speed, under a range of engine loads. The invention eliminates the need for a governor, rotary mechanical throttle, and cable or mechanical linkages, and is especially useful for small engine applications such as in powering a portable electric generator, yard equipment, or outboard motor.

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