APPARATUS FOR CONTROLLING ELECTRIC WATER PUMP OF HYBRID VEHICLE AND METHOD THEREOF
First Claim
1. A motorized water pump control apparatus of a hybrid vehicle, comprising:
- a thermostat determining a circulation path of a coolant;
a coolant temperature sensor detecting a coolant temperature;
a motorized water pump configured to pump the coolant; and
a control portion for controlling the motorized water pump to circulate the coolant, if the vehicle enters into an EV mode or an idle engine stop mode in a condition that the coolant temperature exceeds a predetermined temperature value.
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Accused Products
Abstract
The present invention relates to a water pump control apparatus of a hybrid vehicle and a control method thereof. An exemplary apparatus according to the present invention includes a thermostat determining a circulation path of the coolant, a coolant temperature sensor, a motorized water pump configured to pump a coolant, and a control portion for controlling the motorized water pump to circulate the coolant, if the hybrid vehicle enters into an EV mode or an idle engine stop mode if the coolant temperature exceeds a predetermined temperature. An exemplary method of the present invention includes the steps of suspending operation of the motorized water pump if the coolant temperature is less than a predetermined value until a cooling fan is operated, and controlling a driving speed of the motorized water pump according to a load of the cooling fan in operation.
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Citations
19 Claims
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1. A motorized water pump control apparatus of a hybrid vehicle, comprising:
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a thermostat determining a circulation path of a coolant; a coolant temperature sensor detecting a coolant temperature; a motorized water pump configured to pump the coolant; and a control portion for controlling the motorized water pump to circulate the coolant, if the vehicle enters into an EV mode or an idle engine stop mode in a condition that the coolant temperature exceeds a predetermined temperature value. - View Dependent Claims (2, 3, 4)
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5. A motorized water pump control method of a vehicle, comprising:
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determining whether a vehicle enters into an EV mode or an idle engine stop mode; determining whether a coolant temperature exceeds a predetermined value if the vehicle is in the EV mode or the idle engine stop mode; driving a motorized water pump if the coolant temperature exceeds the predetermined temperature value; turning off the motorized water pump if the coolant temperature is less than the predetermined temperature value; and varying a driving speed of the motorized water pump according to a vehicle speed if the vehicle speed is larger than a predetermined vehicle speed value when the motorized water pump is in operation. - View Dependent Claims (6)
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7. A motorized water pump control apparatus of a hybrid vehicle, comprising:
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a thermostat determining a circulation path of coolant according to a coolant temperature exhausted from an engine; a radiator emitting heat absorbed in the coolant; a cooling fan disposed at one side of the radiator to blow air; a motorized water pump disposed between the engine and the thermostat to circulate the coolant; and a control portion that varies an on or off mode of the motorized water pump according to an operating load of the cooling fan. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A motorized water pump control method of a hybrid vehicle, comprising:
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suspending operation of a motorized water pump in a condition in which a coolant temperature is less than a predetermined temperature value until a cooling fan is operated; and controlling a driving speed of the motorized water pump according to a load of a cooling fan while the cooling fan is being operated. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification