Fault diagnosis apparatus of coolant circulation system for vehicle
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorsGun Seok YOON, Jin OH, Hyun Jun SOH
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Abstract
A fault diagnosis apparatus of a coolant circulation system for a vehicle includes: a water pump for circulating coolant; a controller for applying a revolutions per minute (RPM) command to the water pump; a water pump driver for operating the water pump depending on the applied RPM command; and a current sensor for sensing an current input to the water pump driver. The controller determines whether the input current sensed by the current sensor is within a predetermined normal range to determine whether the coolant circulation system is failed or not.
Claims13
A fault diagnosis apparatus of a coolant circulation system for a vehicle, comprising:
- a water pump for circulating coolant;
- a controller for applying a revolutions per minute (RPM) command to the water pump;
- a water pump driver for operating the water pump depending on the applied RPM command;
- and
- a current sensor for sensing an current input to the water pump driver;
- and
- wherein the controller determines whether the input current sensed by the current sensor is within a predetermined normal range to determine whether the coolant circulation system is failed or not.
Dependencies are inferred from the claim text.