Title:
REDUCTANT PRESSURE ABNORMALITY DIAGNOSIS DEVICE
Document Type and Number:
Japanese Patent JP2019027285
Kind Code:
A
Abstract:
To provide a reductant pressure abnormality diagnosis device capable of minimizing a leakage amount of reductant resulting from falling or damage of pipeline in a reductant supply passage.SOLUTION: A reductant pressure abnormality diagnosis device 100 for diagnosing whether reductant pressure is in an abnormal state or not, includes a reductant pressure abnormality diagnosis unit 102 configured to, when reductant pressure in a reductant injector 106 of a selective catalyst reduction system 101 is harder to rise than that in a normal time, and a reductant change amount in a reductant tank 104 of the selective catalyst reduction system 101 exceeds a threshold, diagnose that reductant pressure is in the abnormal state.SELECTED DRAWING: Figure 1
Inventors:
MINESAWA MASANOBU
MORI KAZUHIRO
MATSUDA KAZUHIRO
MORI KAZUHIRO
MATSUDA KAZUHIRO
Application Number:
JP2017143564A
Publication Date:
February 21, 2019
Filing Date:
July 25, 2017
Export Citation:
Assignee:
ISUZU MOTORS LTD
International Classes:
F01N3/18; B01D53/94; F01N3/08
Attorney, Agent or Firm:
Haruhisa Kinutani
Hiroyuki Hashiyama
Hiroyuki Hashiyama