1989-02-01

A 7 -Cylinder IVD Compressor for Automotive Air Conditioning 890309

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:
  1. 1
    Wide range of capacity control to eliminate clutch cycling which causes temperature and humidity fluctuations of louver outlet air and unexpected engine load variations
  2. 2
    Near perfect protection of the evaporator against icing
  3. 3
    Reliability under all field operating conditions
  4. 4
    Quiet 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.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Recent Progress in Technology of the 5-Cylinder Wobbleplate Type Compressor for Automotive Air Conditioning

840383

View Details

TECHNICAL PAPER

Performance of the Prototype of a Transcritical R744 Mobile A/C System

1999-01-0872

View Details

TECHNICAL PAPER

Experiences from Experimental Investigation of an R744 Dual Evaporator Automotive A/C System

2008-01-0834

View Details

X