Low refrigerant charge detection especially for automotive air c

Details Low refrigerant charge detection especially for automotive air c Low refrigerant charge detection especially for automotive air c

1992-09-18

1993-10-12

Tanner, Harry B.

Refrigeration

With indicator or tester

Operatively correlated with automatic control

62129, 62133, F25B 4902

Patent

active

052514536

ABSTRACT:
A vehicle air conditioning system has means for measuring a first physical quantity related to air conditioning system load to produce a first signal and means for measuring a second physical quantity related to air conditioning system cooling capacity to produce a second signal. Said first and second signals are used to calculate a predicted refrigerant charge for detection of, and protection from, an inadequate refrigerant charge.

REFERENCES:
patent: 4395203 (1983-07-01), Takada
patent: 4482007 (1984-11-01), Yoshimi et al.
patent: 4561260 (1985-12-01), Nishi et al.
patent: 4790143 (1988-12-01), Hanson
patent: 5009074 (1991-04-01), Goubeaux et al.
patent: 5009076 (1991-04-01), Winslow
patent: 5150584 (1992-09-01), Tomasov et al.
patent: 5161384 (1992-11-01), Hanson et al.

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