Control method for cooling system
AssigneesHyundai Motor Company, Kai Motors Corporation
InventorYonggyu Lee
Life of this patent
Estimating the term…
Abstract
A control method for a cooling system is provided. The method includes determining whether the output signals of a first coolant temperature sensor and a second coolant temperature sensor satisfy a predetermined coolant overheating condition. A coolant control valve unit is operated to move the cam to a maximum position when the predetermined coolant overheating condition is satisfied. Additionally, a control temperature is determined according to an output signal of the first coolant temperature sensor and the second coolant temperature sensor and an operation of the injector is limited according to the determined control temperature.
Claims16
A control method for a cooling system, comprising:
- determining, by a controller, whether output signals of a first coolant temperature sensor and a second coolant temperature sensor satisfied a predetermined coolant overheating condition, wherein the first coolant temperature sensor and the second coolant temperature sensor are part of a vehicle operation state detecting portion of the cooling system;
- operating, by the controller, a coolant control valve unit of the cooling system to move a cam of the coolant control valve unit to a maximum position when the predetermined coolant overheating condition is satisfied, wherein the cam adjusts opening rates of a first coolant passage through which the coolant distributed to a heater flows, a second coolant passage through which the coolant distributed to a radiator flows and a third coolant passage through which the coolant discharged from a cylinder block flows;
- determining, by the controller, a control temperature according to an output signal of the first coolant temperature sensor and the second coolant temperature sensor;
- and
- limiting, by the controller, an operation of an injector of the cooling system according to the determined control temperature.
A cooling system, comprising:
- a coolant control valve unit having a cam that adjusts opening rates of a first coolant passage through which the coolant distributed to a heater flows, a second coolant passage through which the coolant distributed to a radiator flows and a third coolant passage through which the coolant discharged from a cylinder block flows;
- a vehicle operation state detecting portion including:
- a first coolant temperature sensor configured to measure the temperature of the coolant flowing through the cylinder head and output a corresponding signal;
- a second coolant temperature sensor configured to measure the temperature of the coolant flowing through the cylinder block;
- and
- a position sensor configured to measure a rotation of the cam and output a corresponding signal;
- an injector;
- and
- a controller configured to operate the coolant control valve unit and the injector according to output signals of the vehicle operation state detecting portion.
Dependencies are inferred from the claim text.