Vehicle air conditioner refrigeration, automatic variable set po

Details Vehicle air conditioner refrigeration, automatic variable set po Vehicle air conditioner refrigeration, automatic variable set po

1993-06-01

1994-08-09

Tanner, Harry B.

Refrigeration

Automatic control

Refrigeration producer

62209, B60H 300

Patent

active

053355148

ABSTRACT:
A method and software/firmware fixed capacity compressor control system for varying the set point temperature of a evaporator in response to changes in ambient temperature in order to produce optimum cooling in the passenger compartment of a vehicle while preventing frost from accumulating on the fins of the evaporator. The system includes an evaporator probe and an outside ambient sensor and firmware for computing set-point steady state temperatures values over a wide range of ambient temperature. Also circuits are provided for cycling ON and OFF a fixed capacity compressor in a manner to achieve optimum cooling in the passenger compartment of the vehicle in response to the computed evaporator set point temperatures.

REFERENCES:
patent: 4753083 (1988-06-01), Sato
patent: 4856293 (1989-08-01), Takahashi
patent: 4909043 (1990-03-01), Masauji et al.
patent: 5201862 (1993-04-01), Pettitt
patent: 5216836 (1993-06-01), Jarosch

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