Quote:
Originally Posted by TimFreeh
The variable displacement A/C compressors that I've seen do not rely on electrical signals to modulate pump displacement. The compressors respond to pressure changes in the suction side of the system, low pressure (like 20-25 PSI) reduces displacement and higher pressures (like anything > 40 PSI) increases displacement. This is typically done via a swash plate with mechanical linkages.
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Tim,
according to the linked article, starting in 2001 Denso started using "electrons" to change compressor displacement:
http://www.search-autoparts.com/searchautoparts/Teardown/ArticleStandard/Article/detail/156230
Since I'm looking at a 1995 compressor, the "old" mechanical method applies to me.
:-) neil