EXHAUST HEAT RECOVERY SYSTEM

Japanese Patent JP2016211483

A

PROBLEM TO BE SOLVED: To provide an exhaust heat recovery system that enables improvement of regeneration efficiency of engine exhaust heat without deteriorating performance of an aftertreatment device.SOLUTION: An evaporator 3 of a Rankine cycle 7 is installed in an exhaust passage 10 located upstream of an aftertreatment device 9, and a bypass flow passage 13 enabling heat transfer to the aftertreatment device 9 is provided. A first three-way valve 14 connected to one end 13a of the bypass flow passage 13 is installed between the evaporator 3 and an expanding device 4, and a second three-way valve 16 connected to the other end 13b via an expansion valve 15 is installed between a condenser 5 and a refrigerant pump 2. When a temperature rise request of the aftertreatment device 9 is made, an ECU 8 performs control to cause the first three-way valve 14 to communicate the expanding device 4 and the bypass flow passage 13 with each other, cause the second three-way valve 16 to communicate the condenser 5 and the bypass flow passage 13 with each other, and drive the motor generator 12 so as to send out a refrigerant 6 from the expanding device 4 toward the aftertreatment device 9.SELECTED DRAWING: Figure 1

ABE MAKOTO
ISHIKAWA NAOYA

JP2015097391A

December 15, 2016

May 12, 2015

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ISUZU MOTORS LTD

F01N5/02; F01N3/023; F01N3/08; F01N3/20; F01N3/24

JP2014156848A	2014-08-28
JP2010077964A	2010-04-08
JP2004011512A	2004-01-15
JP2010270983A	2010-12-02

EP2098696A1

2009-09-09

Seiryu International Patent Service Corporation
Takayoshi in the daytime
Masao Sakaizawa
Isao Hirai
Yuki Yamada

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