Title:
EXHAUST EMISSION CONTROL SYSTEM
Document Type and Number:
Japanese Patent JP2016061145
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To effectively prevent the unstable combustion of an engine at a time of start or end of catalyst regeneration.SOLUTION: An exhaust emission control system comprises: a NOx reduction catalyst 32 provided in an exhaust passage of an internal combustion engine; an intake air quantity sensor 40; and a control unit 50 executing a regeneration treatment for switching exhaust gas from a lean state to a rich state by using both an air control to reduce a quantity of intake air and an injection control to increase a fuel injection quantity, and the control unit 50 changes at least one of fuel injection timing and the fuel injection quantity of the internal combustion engine 10 in response to a detection value of the intake air quantity sensor 40 in at least one of a period of starting the regeneration treatment and switching the lean state to the rich state and a period of ending the regeneration treatment and switching the rich state to the lean state.SELECTED DRAWING: Figure 1
Inventors:
SAITO MASAAKI
NAKADA TERUO
SAKAMOTO TAKAYUKI
NAGAOKA TAIJI
GABE MASASHI
NAKADA TERUO
SAKAMOTO TAKAYUKI
NAGAOKA TAIJI
GABE MASASHI
Application Number:
JP2014186758A
Publication Date:
April 25, 2016
Filing Date:
September 12, 2014
Export Citation:
Assignee:
ISUZU MOTORS LTD
International Classes:
F02D41/02; F01N3/08; F01N3/36; F02D41/04; F02D41/18; F02D43/00; F02D45/00
Attorney, Agent or Firm:
Haruhisa Kinutani
Hiroyuki Hashiyama
Nobuo Kinutani
Hiroyuki Hashiyama
Nobuo Kinutani
Previous Patent: An exhaust-air-purification system and a method for controlling the same
Next Patent: Exhaust-air-purification system
Next Patent: Exhaust-air-purification system