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A 7 -Cylinder IVD Compressor for Automotive Air Conditioning
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English
Abstract
A 7-cylinder, wobble plate type, infinitely variable displacement, (IVD), compressor has been developed to meet the following requirements as set forth by the world automotive manufacturers:
- 1Wide range of capacity control to eliminate clutch cycling which causes temperature and humidity fluctuations of louver outlet air and unexpected engine load variations
- 2Near perfect protection of the evaporator against icing
- 3Reliability under all field operating conditions
- 4Quiet operation in a compact and lightweight package to suit the new trends in automotive design.
A simpler mechanism has been applied to the variable angle cam drive and wobble plate rotation prevention method than with the conventional IVD compressor. The 7-cylinder design, with fewer parts for the piston drive mechanism, enables a quiet compressor of 161.3 cc displacement in a 118 mm diameter casing. An internal control valve is integrated in the center of the valve plate assembly. Mass flow rate compensation is attained using a discharge pressure sensing rod which modulates the opening pressure of the bellows valve.
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Citation
Takai, K., Shimizu, S., and Terauchi, K., "A 7 -Cylinder IVD Compressor for Automotive Air Conditioning," SAE Technical Paper 890309, 1989, https://doi.org/10.4271/890309.Also In
References
- Skinner T.J. Swadner R.L. “V5 Automotive Variable Displacement Air Conditioning Compressor” 1985 SAE Congress Paper 850040
- Nishimura Y. et al “Development of Two-Stage Variable Displacement Compressor for Automotive Air Conditioning,” 1983 SAE Congress paper 830539
- Mabe A. et al “The Scroll Type Variable Capacity Compressor for Automotive Air Conditioners,” 1987 SAE Congress paper, 870037
- Tojo K. et al “A Study of the Kinematics of a Variable Displacement Compressor for Automotive Air Conditioners” Prc. of the 1988 Purdue Compressor Technology Conference
- Inoue A. et al “Evaluation of Infinitely Variable Displacement Compressors with Thermal Expansion Valves in a Motor Vehicle Air Conditioning System” 1988 SAE Congress Paper 880052
- Loomis P.B. III May 13 1960
- Roberts R.W. Salle R.D. January 21 1975