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Rotary Gaseous Fuel Injector

Abstract: 

There is provided an electrically activated, multiple orifice rotary fuel injector for injecting gaseous fuel into an internal combustion engine. A rotary electric stepper motor is housed within an injector body which receives both air and compressed gaseous fuel. The stepper motor rotates an annular valve member to selectively permit or block fuel flow into the air stream through a plurality of circumferentially arranged holes in the valve member, and a correspondingly arranged plurality of passages in the injector body. An electronic control module on the engine utilizes pulse-width-height-triggering point modulation techniques for controlling fuel injection intervals and timing.

Patent Number: 
5,201,299
Date Of Issue: 
04/13/1993
Inventors: 

Hakchul Kong