Method and apparatus for controlling damper clutch to prevent engine stall
AssigneeHyundai Autron Co., Ltd.
InventorsJongik Choi, Kwanghyuk Lim
Life of this patent
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Abstract
Disclosed are a method and an apparatus for controlling a damper clutch to prevent engine stall, and more particularly, to a method and an apparatus for controlling a damper clutch to prevent engine stall which can decide and correct when there is any error in control of a damper clutch in order to prevent engine stall. The method and the apparatus for controlling the damper clutch can decide and correct that a control unit of a damper clutch controller shows a wrong duty command value or a wrong current command value, thereby preventing engine stall, restraining decrease of acceleration power and blocking generation of noise or vibration.
Claims11
A method for controlling a damper clutch of an automatic transmission to prevent engine stall comprising:
- a first time domain deciding step of sensing a damper clutch control signal in a first time domain defined before engine cranking since key-on and deciding whether or not the sensed damper clutch control signal in the first time domain is normal;
- a vehicle state information detecting step of detecting vehicle state information containing at least one of engine RPM, vehicle speed, degree of opening of the throttle valve, turbine RPM and gear shift;
- a second time domain deciding step of sensing a damper clutch control signal in a second time domain defined relative to time after the engine cranking and deciding whether or not the sensed damper clutch control signal in the second time domain is normal based on the vehicle state information;
- a control signal initializing step of initializing the damper clutch control signal of the first or second time domain when it is decided that the sensed damper clutch control signal in the first or second time domain deciding step is abnormal;
- and
- a control step of controlling the damper clutch by the initialized damper clutch control signal of the first or second time domain when it is decided that the sensed damper clutch control signal in the first or second time domain deciding step is abnormal.
An apparatus for controlling a damper clutch to prevent engine stall comprising:
- a vehicle state information detecting unit for detecting vehicle state information;
- an actuator for actuating the damper clutch;
- and
- a damper clutch control unit which is electrically connected with the vehicle state information detecting unit and the actuator, controls to initialize a first control signal which controls the damper clutch when the first control signal received before engine cranking since key-on is in a first abnormal zone and controls to initialize a second control signal which controls the damper clutch when the second control signal received before the engine cranking since key-on is in a second abnormal zone.
Dependencies are inferred from the claim text.