Title:
排気ガス浄化装置
Document Type and Number:
Japanese Patent JP6435734
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an exhaust gas purification device capable of improving an exhaust gas purification rate by: activating an oxidation catalyst by increasing a temperature of exhaust gas when the same discharged from a cylinder is low or reducing the temperature of the exhaust gas when the same is high; and curbing a reduction in a purification rate of a reducing catalyst.SOLUTION: An exhaust gas purification device comprises: a heat exchanger 34; a heat storage and radiation device 40; and a medium 35 which is circulated between the heat exchanger 34 and the heat storage and radiation device 40. When a temperature Tg of exhaust gas is not more than an activation temperature T1, the exhaust gas purification device makes the temperature Tg of the exhaust gas higher than the activation temperature T1 through heat exchange by the heat exchanger 34 and radiation by the heat storage and radiation device 40. When the temperature Tg of the exhaust gas is not less than a purification rate reducing temperature T2, the exhaust gas purification device makes the temperature Tg of the exhaust gas less than the purification rate reducing temperature T2 through the heat exchange by the heat exchanger 34 and heat storage by the heat storage and radiation device 40.SELECTED DRAWING: Figure 1
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Inventors:
Kazuo Ohsumi
Application Number:
JP2014188622A
Publication Date:
December 12, 2018
Filing Date:
September 17, 2014
Export Citation:
Assignee:
Isuzu Motors Limited
International Classes:
F01N3/24; B01D53/96; F01N3/20; F01N3/28; F01N5/02
Domestic Patent References:
| JP2014039900A | ||||
| JP2010059862A | ||||
| JP11101526A | ||||
| JP2014085093A | ||||
| JP2014051972A | ||||
| JP2012127323A |
Attorney, Agent or Firm:
Seiryu International Patent Service Corporation
Takayoshi in the daytime
Masao Sakaizawa
Kenji Sato
Isao Hirai
Takayoshi in the daytime
Masao Sakaizawa
Kenji Sato
Isao Hirai