In a variable displacement compressor of a piston type, a valve body (34) is movably placed adjacent to a main channel (32) communicating a suction port (26) with a suction chamber (24). The valve body is for variably controlling an opening area of the main channel. A fluid damper (38) is coupled to...http://www.google.ca/patents/US6520751?utm_source=gb-gplus-sharePatent US6520751 - Variable displacement compressor having a noise reducing valve assembly
