Method for controlling exhaust gas recirculation valve
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsSatoshi Kawamura, Sotsuo Miyoshi, Toshihiko Miyake, Youichi Fujita
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Abstract
When an open-close valve does not operate despite a full (100%) continuous power feeding to a driving motor for an exhaust gas recirculation valve provided in an exhaust gas recirculation system, the power feeding to the motor is stopped to prevent previously the occurrence of a seizure of the motor.
Claims4
A method of controlling an exhaust gas recirculation valve wherein a valve-open position is controlled by a torque balance between a return torque given by urging means in the valve closing direction and a motor torque given by a motor in the valve opening direction, comprising the step of stopping power feeding to said motor if an open-close valve failed to operate despite a full (100%) continuous power feeding to said motor for a predetermined period of time or more.
Dependencies are inferred from the claim text.