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Analysis and development of a control for an air-conditioning system equipped with variable external controlled compressor and automatic valve.

Author(s) : PARODI M. L., MARTINI S., MAGINI M., et al.

Summary

One of the aims of new car air-conditioning systems is to reduce the impact on fuel consumption without penalizing cabin thermal comfort. One way to reduce fuel over consumption is to use a variable external controlled compressor. These compressors can vary their displacement in order to reach a fixed level of thermal comfort inside the cabin, giving, in all the working conditions, the right refrigerant capacity without the need for reheat. A variable external controlled compressor coupled with an expansion valve generates fluctuations on cooling power (hunting), that have a negative impact on thermal comfort, on consumption, and on compressor reliability. This paper describes the development of a compressor control that eliminates these fluctuations.

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Pages: 2004-3

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Details

  • Original title: Analysis and development of a control for an air-conditioning system equipped with variable external controlled compressor and automatic valve.
  • Record ID : 2006-2040
  • Languages: English
  • Source: Compressors 2004: 5th International Conference on Compressors and Coolants
  • Publication date: 2004/09/01

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