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ACRC Technical Report 170PDF


Title:Measurement of the Relationship Between Oil Circulation and Compressor Lubrication in a Mobile AlC System: Part Two
Author(s):Chappell, J.D.; Drozdek, J.C.; Cusano, C.; Hrnjak, P.S.; Miller, N.R.; Newell, T.A.
Subject(s):mobile air conditioning systems
Abstract:This study used previously developed instrumentation to determine the state of compressor lubrication in an automotive NC system during three transient tests. The primary technique used in the study was measurement of the electrical contact resistance at the shoe and swashplate interface. The secondary technique was dynamic measurement of the swashplate cavity pressure. Modifications were made to the existing test stand to allow the transient testing. The first test was an oil run down test. This test was conducted until compressor failure occurred. The second test was a liquid refrigerant slugging test, and the third test was a dry start test. These tests demonstrated that the instrumentation techniques were able to detect poor compressor lubrication conditions. This work outlines the modifications made to the test loop and presents the results of these transient tests. A conjecture is put forth to explain test results and possible future work is discuss.
Issue Date:2000-07
Publisher:Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign.
Series/Report:Air Conditioning and Refrigeration Center TR-170
Genre:Technical Report
Sponsor:Air Conditioning and Refrigeration Project 92
Date Available in IDEALS:2009-05-29
Identifier in Online Catalog:4291828

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