Title:
吸蔵量推定装置
Document Type and Number:
Japanese Patent JP6550996
Kind Code:
B2
Abstract:
Provided is a storage amount estimation device for a NOx storage reduction-type catalyst 32 disposed in the exhaust gas system of an engine 10, said NOx storage reduction-type catalyst 32 storing NOx contained in an exhaust gas in a lean exhaust gas state and reducing/purifying the stored NOx in a rich exhaust gas state. An ECU 50 is provided with a NOx storage amount computation unit 77 that acquires, on the basis of the temperature of the NOx storage reduction-type catalyst 32, the NOx-equivalent amount of the SOx stored in the NOx storage reduction-type catalyst 32, and estimates, on the basis of the NOx-equivalent amount and the amount of NOx accumulated in the NOx storage reduction-type catalyst 32, the total NOx storage amount stored in the NOx storage reduction-type catalyst 32.
Inventors:
Teruo Nakata
Takayuki Sakamoto
Daiji Nagaoka
Takayuki Sakamoto
Daiji Nagaoka
Application Number:
JP2015142049A
Publication Date:
July 31, 2019
Filing Date:
July 16, 2015
Export Citation:
Assignee:
Isuzu Motors Limited
International Classes:
F01N3/08; B01D53/94; F01N3/20
Domestic Patent References:
| JP2003184545A | ||||
| JP2000265825A | ||||
| JP200985018A |
Foreign References:
| US20120095666 |
Attorney, Agent or Firm:
Akio Ikeda