Internal-combustion engines – Charge forming device – Gaseous fuel and air mixer
Patent
1985-09-20
1987-09-22
Cross, E. Rollins
Internal-combustion engines
Charge forming device
Gaseous fuel and air mixer
123 27GE, 123575, 481891, F02B 4300
Patent
active
046948112
ABSTRACT:
An air-gas mixing device of the type used to mix air and gaseous fuel as a gaseous fuel charge for an internal combustion engine. Fuel and air valves for controlling the air/fuel mixture are coupled together and actuated by a diaphragm in response to a fluid pressure signal, derived from the intake manifold pressure of the engine, acting on the diaphragm. The fuel valve is also independently acutated by a stepper motor mounted to the diaphragm and operated by a remote electrical control signal from a controller designed to measure engine performance and provide a signal to correct any deficiencies in the air/fuel mixture such as a feedback controller receiving inputs from oxygen, speed and other sensors for measuring engine performance. Becuase of the dual control of the fuel valve, the device is capable of handling a wide range of gaseous fuels of different BTU content and of providing a more optimum air/fuel mixture for better fuel economy, emissions control and engine performance.
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Cross E. Rollins
Impco Carburetion, Inc.
Seeman Thomas A.
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