Title:
EXHAUST PURIFICATION DEVICE, VEHICLE, AND EXHAUST PURIFICATION CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/172357
Kind Code:
A1
Abstract:
This exhaust purification device is provided with: an exhaust pipe through which exhaust gas generated from an internal combustion engine flows; a NOx selective reduction-type catalyst which is disposed in the exhaust pipe and which purifies nitrogen oxides in the exhaust gas by adsorbing a reducing agent; a NOx storage reduction-type catalyst that is disposed upstream of the NOx selective reduction-type catalyst in the exhaust pipe in an exhaust direction in which the exhaust gas flows, and that stores nitrogen oxides in the exhaust gas; an adjustment unit which adjusts the flow rate of exhaust gas returned from the exhaust pipe to an intake pipe of the internal combustion engine; and a control unit which controls the adjustment unit such that the reduction reaction between the reducing agent and the nitrogen oxides contained in the exhaust gas is promoted according to the adsorption amount of the reducing agent of the NOx selective reduction-type catalyst.
Inventors:
ANODA HIROSHI (JP)
Application Number:
PCT/JP2019/009013
Publication Date:
September 12, 2019
Filing Date:
March 07, 2019
Export Citation:
Assignee:
ISUZU MOTORS LTD (JP)
International Classes:
F02D21/08; B01D53/94; F01N3/025; F01N3/08; F01N3/24; F01N3/28; F02D41/04; F02M26/00; F02M26/15
Foreign References:
| JP2015014215A | 2015-01-22 | |||
| JP2018021475A | 2018-02-08 | |||
| JP2006274844A | 2006-10-12 | |||
| JP2010112345A | 2010-05-20 |
Attorney, Agent or Firm:
WASHIDA, Kimihito (JP)
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