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US 2014/0370409 A1Published application
Cooling pump driving system
AssigneeHyundai Motor Company
InventorsJeong Kyu PARK, Dong Hoon KIM, Young Pin JIN
Life of this patent
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Abstract
A cooling pump driving system includes an electric water pump in a coolant passage line for circulating a coolant and having a variable rotation speed. A sensor disposed at an outlet side of the electric water pump checks a coolant pressure passing through the electric water pump. A controller including a reference value for the pressure change is configured to decrease a rotation speed of the electric water pump when the pressure change detected by the sensor is the reference value or higher.
Claims9
A cooling pump driving system comprising:
- an electric water pump in a coolant passage line for circulating a coolant and having a variable rotation speed;
- a sensor disposed at an outlet side of the electric water pump to check a coolant pressure passing through the electric water pump;
- and
- a controller including a reference value for a pressure change configured to decrease a rotation speed of the electric water pump when the pressure change detected by the sensor is the reference value or higher.
1 more element
A cooling pump driving system for a large bus, comprising:
- a fuel cell cooling line including a fuel cell stack, an electric water pump pumping a coolant of a fuel cell radiator to circulate the coolant to the fuel cell stack, and a sensor disposed at a rear end of the electric water pump to check a coolant pressure passing through the electric water pump;
- a vehicle cooling line including an electric water pump pumping a coolant of a vehicle radiator to circulate the coolant to an electric component and the sensor disposed at a rear end of the electric water pump to check the coolant pressure passing through the electric water pump;
- and
- a controller configured to decrease a driving amount of the electric water pump of the fuel cell cooling line or the vehicle cooling line when a pressure change of the fuel cell cooling line or the vehicle cooling line is a reference value or higher.
1 more element
Dependencies are inferred from the claim text.