Method and system for controlling electric water pump
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorJae Man CHO
Life of this patent
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Abstract
A method of controlling an EWP through an EWP controller configured to communicate with an engine electronic control unit (ECU) on a controller area network (CAN) includes receiving a CAN signal from the ECU to control the EWP through the CAN; receiving a fail-safe digital signal (FSDS) that is related to a fail-safe control function of an engine or the EWP from the ECU; and controlling the EWP based on the CAN signal and the fail-safe digital signal.
Claims19
A method of controlling an electric water pump (EWP) through an EWP controller configured to communicate with an engine electronic control unit (ECU) on a controller area network (CAN), the method comprising:
- receiving a CAN signal from the ECU to control the EWP through the CAN;
- receiving a fail-safe digital signal (FSDS) that is related to a fail-safe control function of an engine or the EWP from the ECU;
- and
- controlling the EWP based on the CAN signal and the fail-safe digital signal.
A system for controlling an electric water pump (EWP), comprising:
- an engine electronic control unit (ECU) configured to control an engine;
- an electric water pump (EWP) configured to cool the engine;
- a battery configured to supply the EWP with battery power;
- an ignition power portion configured to supply the EWP with ignition (IG) power;
- and
- an EWP controller configured to communicate with the ECU on a controller area network (CAN), receive a CAN signal from the ECU to control the EWP through the CAN, receive a fail-safe digital signal (FSDS) from the ECU, and control the EWP based on the CAN signal and the FSDS.
A computer readable storage medium containing a computer program configured to cause an EWP controller to control an electric water pump (EWP) by the following method when read and processed by a computer system:
- receiving a controller area network (CAN) signal from an engine electronic control unit (ECU) to control the EWP through a controller area network (CAN);
- receiving a fail-safe digital signal (FSDS) that is related to a fail-safe control function of an engine or the EWP from the ECU;
- and controlling the EWP based on the CAN signal and the fail-safe digital signal.
Dependencies are inferred from the claim text.