Title:
AUTOMOBILE COOLING FAN CONTROL SYSTEM
Document Type and Number:
Japanese Patent JP3836902
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an automobile cooling fan control system capable of efficiently cooling the cooling water.
SOLUTION: When the temperature of the cooling water detected by a cooling water temperature detection section 10 is set temperature or above, the control command is outputted to a current command section 20, and the current command is outputted to a current command mode determination section 30. The current command mode determination section 30 determines the current mode for operating a cooling fan motor M with the full voltage, and a pulse with comparison section 40 compares the current command with the current detection signal of the cooling fan motor M from a current detection section 60. If the current command is larger, the control signal having a low duty ratio is outputted to an output drive circuit 70 from an output logic circuit section 50 based on the output of the pulse width comparison section 40, the clock signal, and the current mode. The output drive circuit 70 controls a main power circuit 80 to properly drive the cooling fan motor M.
Inventors:
Kim Yong Tiger
Lee Sakae
Lee Sakae
Application Number:
JP10997596A
Publication Date:
October 25, 2006
Filing Date:
April 30, 1996
Export Citation:
Assignee:
Samsung Electronics Co.,Ltd.
International Classes:
F01P7/04; F01P5/14; (IPC1-7): F01P7/04
Domestic Patent References:
| JP59086308U | ||||
| JP59085422A |
Attorney, Agent or Firm:
Makoto Hagiwara
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