To reduce power consumption of a refrigerant force feed means without degrading a cooling capacity of a heat exchanger as a whole.
This ebullient cooling device 19 includes first to third circulation flow channels 21-23 for guiding first to third refrigerants discharged in a partially-boiled state to a refrigerant liquefying section 24, and supplying the liquid refrigerant liquefied in the refrigerant liquefying section 24 to the heat exchanger 20. First to third supply flow channels 56-58 of the first to third circulation flow channels 21-23 are provided with first to third pumps 59-61 for force-feeding the liquid refrigerant liquefied in the refrigerant liquefying section 24. A control unit 68 sets a target temperature of an EGR gas discharged from first to third refrigerant discharge pipes 33-35 of the heat exchanger 20. The control unit 68 can cool the EGR gas to the target temperature and control flow rates of the first to third refrigerants flowing in the first to third refrigerant flow channels 43-45 to minimize the power consumption of the first to third pumps 59-61.
COPYRIGHT: (C)2009,JPO&INPIT
Takefusa Kubo
Keiji Fuji
Hirohisa Kato
Akiyama Taiyu
Fumihiko Ishiguro
| JP60002889A | ||||
| JP60006985U | ||||
| JP6129783A | ||||
| JP61252493A | ||||
| JP5240589A | ||||
| JP61055586A | ||||
| JP61168791A | ||||
| JP2003214262A | ||||
| JP2006207495A | ||||
| JP2007162502A | ||||
| JP61252492A | ||||
| JP8285484A |
Makoto Onda