Internal-combustion engines – Charge forming device – Including exhaust gas condition responsive means
Patent
1993-08-02
1994-09-27
Cross, E. Rollins
Internal-combustion engines
Charge forming device
Including exhaust gas condition responsive means
123571, 731173, F02M 2507
Patent
active
053499360
ABSTRACT:
A method of diagnosing an exhaust gas recirculation control system of an engine as to occurrence of a fault in the system. The state of a pressure sensor incorporated in the exhaust gas recirculation system for controlling the recirculation is checked with the aid of various parameters involved in operation of the engine. When the pressure sensor is found as suffering from abnormality such as freezing and inoperative, execution of the diagnosis or result obtained after execution of the diagnosis is invalidated.
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Cross E. Rollins
Mitsubishi Denki & Kabushiki Kaisha
Moulis Thomas N.
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