Control system and control method for coolant control valve unit
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorYonggyu LEE
Life of this patent
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Abstract
A control system for a coolant control valve unit, which includes a cam and a valve that opens and closes a coolant passage in conjunction with rotation of the cam, includes: a motor controlling the rotation of the cam; and a controller configured to correct a target valve opening degree of the valve using a correction value according to a degree of wear of the valve, to determine a target rotational angle of the cam using the target valve opening degree corrected by the correction value, and to control an operation of the motor according to the target rotational angle of the cam.
Claims11
A control system for a coolant control valve unit, which includes a cam and a valve that opens and closes a coolant passage in conjunction with rotation of the cam, the control system comprises:
- a motor controlling the rotation of the cam;
- and
- a controller configured to:
- correct a target valve opening degree of the valve using a correction value according to a degree of wear of the valve;
- determine a target rotational angle of the cam using the target valve opening degree corrected by the correction value;
- and
- control an operation of the motor according to the target rotational angle of the cam.
A control method for a coolant control valve unit, which includes a cam driven by a motor and a valve that opens and closes a coolant passage in conjunction with rotation of the cam, the control method comprises steps of:
- calculating, by a controller, a target valve opening degree of the valve;
- correcting, by the controller, the target valve opening degree of the valve using a correction value according to a degree of wear of the valve;
- determining, by the controller, a target rotational angle of the cam using the target valve opening degree corrected by the correction value;
- and
- controlling, by the controller, an operation of the motor according to the target rotational angle of the cam.
Dependencies are inferred from the claim text.