1987-02-01

The Scroll Type Variable Capacity Compressor for Automotive Air Conditioners 870037

A variable capacity compressor, designated the TRV, was developed by applying an intermediate stage bypassing method to the already proven SCROLL compressor. The purposes were:
  1. 1.
    to attain better temperature control
  2. 2.
    to reduce the horsepower requirement and to eliminate the torque surge
  3. 3.
    to accomplish continuous capacity control in a wide operating range
  4. 4.
    to maintain an excellent cool down with a very limited chance of cycling for the minimum displacement of 25%, and
  5. 5.
    to utilize the SCROLL machine concept for low noise and smooth operation.
Experimental data of the compressor and A/C system simulation results were discussed to show that all the expected features were realized.

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