Internal-combustion engines – Charge forming device – Gaseous fuel and air mixer
Patent
1991-12-11
1993-04-13
Wolfe, Willis R.
Internal-combustion engines
Charge forming device
Gaseous fuel and air mixer
123472, F02M 2104
Patent
active
052012999
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.
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Southwest Research Institute
Wolfe Willis R.
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