Title:
REVOLUTION SPEED CONTROL DEVICE FOR VEHICULAR COOLING FAN
Document Type and Number:
Japanese Patent JPH05263641
Kind Code:
A
Abstract:
PURPOSE:To reduce fuel consumption and improve a cooling property in a vehicle. CONSTITUTION:A cooling fan 5 passes a cooling wind to both the radiater 1 of an internal combustion engine and the condenser 2 of an air conditioner. A microcomputer 6 calculates an average refrigerant pressure per unit time of the air conditioner based on a signal from a pressure sensor 7 and when this value is between a lower limit set pressure and a reference set pressure, the revolution speed of the cooling fan 5 is set in response to the refrigerant pressure based on a basic pattern data in which the relationship between the refrigerant pressure and the revolution speed is changed linearly. When the average refrigerant pressure exceeds the reference set pressure, the microcomputer 6 changes the basic pattern data to a changed pattern data with a bigger inclination than this.
Inventors:
Sugiyama Toshiki
Kazuhiro Takeuchi
Kazuhiro Takeuchi
Application Number:
JP6463392A
Publication Date:
October 12, 1993
Filing Date:
March 23, 1992
Export Citation:
Assignee:
Nippon Denso Co., Ltd.
International Classes:
F01P3/18; F01P7/04; (IPC1-7): F01P7/04; F01P3/18
Attorney, Agent or Firm:
Tsuyoshi Sato