Control for gaseous fueled engine

Details Control for gaseous fueled engine Control for gaseous fueled engine

1994-08-29

1995-12-12

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

123688, 123527, F02B 4300, F02D 4114, F02M 2104

Patent

active

054740533

ABSTRACT:
A feedback fuel control circuit for a gaseous fuel engine to maintain a stoichiometric fuel/air ratio through adjustment of an air bleed in the fuel supply circuit. The system operates with a sensor that does not output a signal until the engine temperature is more than a predetermined temperature. Therefore, during the times when the output engine combustion sensor is not at its operating temperature the feedback control is disabled and a lean fuel air mixture is supplied to the engine. This mixture is temporarily enriching during the warmup cycle to determine if the combustion sensor outputs a signal and when it does the system switches to feedback control.

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