Patent ID: 8739532
Filing Date: 2014-06-03
Classification: F01C,F01K,F04C

Abstract:
1. An exhaust heat regeneration system, comprising: an evaporator to cool engine cooling water by heat exchange with a refrigerant; an expansion device to expand the refrigerant heated through the evaporator so as to generate a driving force; a condenser to cool the refrigerant that has passed through the expansion device to condense the refrigerant; and a pump to pressure-feed the refrigerant cooled through the condenser to the evaporator, wherein: the expansion device is coupled to the pump by a shaft, and the expansion device and the pump are housed within a same casing to constitute a pump-integrated expansion device; and the pump comprises a high-pressure chamber through which the refrigerant to be discharged to the evaporator flows, the high-pressure chamber being limited to an expansion device side of the casing, which is a side of the casing in an axial direction of the shaft that includes the expansion device, and limited to a space between moving parts of the pump and the expansion device in the axial direction.