Vehicle air conditioning control apparatus

Details Vehicle air conditioning control apparatus Vehicle air conditioning control apparatus

2005-04-26

2005-04-26

Tapolcai, William E. (Department: 3744)

Refrigeration

Automatic control

Of external fluid or means

C062S228500

Reexamination Certificate

active

06883340

ABSTRACT:
A vehicle air conditioning control apparatus having an externally controlled type compressor3and an externally controlled type cooling electric fan9is disclosed in which a control map, for determining a duty ratio for a fan motor10in terms of a compressor discharge pressure Pd, is determined based on the maximum efficiency point, for providing the maximum fuel consumption, that allows a total engine load torque, represented by a total sum of an engine load torque caused by the externally controlled type compressor3and an engine load torque caused by a fan motor10, to be a minimum torque, and a duty voltage to be applied to the fan motor10is controlled using the compressor outlet pressure Pd and the control map which is determined.

REFERENCES:
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patent: 6367271 (2002-04-01), Forrest et al.
patent: 20010003904 (2001-06-01), Hamery et al.
patent: 20010047658 (2001-12-01), Forrest et al.
patent: 0 342 928 (1989-11-01), None
patent: 2 811 617 (2002-01-01), None
Patent Abstract of Japan, vol. 018, No. 503, Sep. 21, 1994, JP 06-171352, Jun. 21, 1994.

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