Internal-combustion engines – Charge forming device – Gaseous fuel and air mixer
Patent
1999-05-10
2000-10-17
Yuen, Henry C.
Internal-combustion engines
Charge forming device
Gaseous fuel and air mixer
123525, 123 27GE, F02B 4300
Patent
active
061315524
ABSTRACT:
A fuel control system for delivering gaseous fuel from a source through an air/fuel mixture to a gas-operated engine that includes at least one sensor for operative coupling to the engine to provide at least one electronic sensor signal responsive to engine operating conditions. An electronic control unit is responsive to the sensor signal(s) for providing a fuel control signal indicative of a desired quantity of fuel to be delivered to the engine. A pressure regulator, for disposition between the fuel source and the fuel/air mixture, is responsive to the fuel control signal for controlling delivery of gaseous fuel to the mixer. The pressure regulator includes a housing having an inlet for connection to the fuel source and an outlet for connection to the mixer. A valve is disposed within the housing and biased toward closure by a primary pressure regulating spring for controlling flow of fuel from the inlet to the outlet. A solenoid force motor is mounted on the housing and has a force coil for receiving and translating the fuel control signal. A rigid actuating member is driven by and extends from the coil into the housing directly to the valve-actuating lever for modulating control of the operative position of the valve in bypass mechanical force transmission relationship to the regulating spring, and thereby modulating control flow of gaseous fuel through the housing, as a function of the fuel control signal to the pressure regulator.
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Paielli Perry M.
Pennala Dean A.
Dana Corporation
Huynh Hai
Yuen Henry C.
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