Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1978-10-27
1981-06-09
Myhre, Charles J.
Internal-combustion engines
Charge forming device
Fuel injection system
123436, 60276, F02D 500
Patent
active
042717981
ABSTRACT:
A closed loop control system is disclosed for controlling the air-fuel ratio of an internal combustion engine. An oxygen sensor is connected into the control loop after engine warm up when the temperature has reached its operating temperature to maintain the air-fuel ratio close to the stoichiometric value. An engine roughness detector is connected into the control loop before the oxygen sensor has reached its operating temperature to maintain the air-fuel ratio close to a predetermined lean limit. A temperature sensor and switching means controlled thereby are provided to alternately connect the roughness detector and the oxygen sensor in the control loop.
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Leung Chun K.
Seitz William R.
Ethington Paul J.
Haas, Jr. Gaylord P.
Myhre Charles J.
Nelli R. A.
The Bendix Corporation
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