Cooling system of a vehicle and a method of controlling the cooling system
AssigneeHyundai Motor Company
InventorsMun Soon Kwon, Kwang Ki Kim
Life of this patent
Estimating the term…
Abstract
A method of controlling a cooling system includes, by an integrated controller: controller area network (CAN) checking whether CAN communication is abnormal after a vehicle is turned on and control of a cooling fan and an active air flap is initiated; single-communication checking whether communication with a cooling fan controller and an active air flap (AAF) controller is abnormal; performing a first fail-safe operation of communicating with the cooling fan controller and the AAF controller; and controlling the cooling fan and the active air flap based on signals of a first temperature sensor of the cooling fan controller and a second temperature sensor of the AAF controller.
Claims7
A method of controlling a cooling system, the method comprising:
- controller area network (CAN) checking, by an integrated controller, whether CAN communication is abnormal after a vehicle is turned on and control of a cooling fan and an active air flap is initiated;
- single-communication checking, by the integrated controller, whether communication with a cooling fan controller and an active air flap (AAF) controller is abnormal;
- performing, by the integrated controller, a first fail-safe operation of communicating with the cooling fan controller and the AAF controller;
- and
- controlling, by the integrated controller, the cooling fan and the active air flap based on signals of a first temperature sensor of the cooling fan controller and a second temperature sensor of the AAF controller.
A method of controlling a cooling system, the method comprising:
- sensor-output checking, by an integrated controller, whether outputs of an ambient air sensor or an air conditioner coolant pressure sensor are abnormal while a vehicle is turned on and an air conditioner is turned on;
- determining whether both the outputs of the ambient air sensor and the air conditioner coolant pressure sensor are abnormal;
- and
- performing a fail-safe operation, wherein:
- (1) when the determining identifies that both of the ambient air sensor and the air conditioner coolant pressure sensor are abnormal, the integrated controller controls the cooling fan with maximum output and controls the active air flap to be opened to a maximum degree, or (2) when the determining identifies that only one sensor of the ambient air sensor and the air conditioner coolant pressure sensor is abnormal, the integrated controller estimates an output value of the abnormal sensor based on an output value of the other normal sensor.
Dependencies are inferred from the claim text.