Method of controlling air conditioner for vehicles

Details Method of controlling air conditioner for vehicles Method of controlling air conditioner for vehicles

2005-10-20

2010-02-09

Jiang, Chen-Wen (Department: 3744)

Refrigeration

Automatic control

Refrigeration producer

C062S228100, C062S133000, C236S07800D

Reexamination Certificate

active

07658080

ABSTRACT:
A vehicle air conditioner is controlled so a target control value of a pressure control valve controlling tilt angle of a swash-plate of a swash-plate type variable capacity compressor is variably controlled according to temperature deviation between target evaporator temperature and actual evaporator temperature, thereby controlling the compressor discharge capacity. Target heat discharge quantity is calculated. Target heat discharge quantity is calculated for high thermal load control or low thermal load control. The control value of the pressure control valve is compulsively controlled. Then the control value is normally controlled. The actual evaporator temperature can reach the target evaporator temperature at an initial operating stage, and temperature stability is secured.

REFERENCES:
patent: 5088298 (1992-02-01), Fujii
patent: 5172563 (1992-12-01), Fujii
patent: 6038871 (2000-03-01), Gutierrez et al.
patent: 2003200730 (2003-07-01), None

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