Title:
EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2015059478
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an exhaust purification system of an internal combustion engine which controls a deterioration degree of fuel injection in forcible regeneration.SOLUTION: An exhaust purification system of an internal combustion engine includes a DOC 21 provided in an exhaust system of an engine 10; a DPF22 which is provided in a downstream side of the DOC 21 and collects PM in exhaust gas; an electrode 27 which detects the electrostatic capacitance of the DPF 22; a DPF internal temperature calculation unit which calculates an internal temperature of the DPF 22 on the basis of the electrostatic capacitance input from the electrode 27; a DPF deterioration degree calculation unit which calculates a deterioration degree of the DPF 22 on the basis of the internal temperature input from the DPF internal temperature calculation unit; a forcible regeneration control unit which, when a PM accumulation amount in the DPF 22 exceeds a prescribed amount, carries out forcible regeneration in which fuel is injected into the DOC 21 to combust and remove PM; and an injection amount correction unit which corrects a fuel injection amount of the forcible regeneration control unit in accordance with the deterioration degree of the DPF 22 input from the DPF deterioration degree calculation unit.
Inventors:
MURASAWA NAOTO
FUJIE HIDEKAZU
UCHIYAMA TADASHI
HANAWA TETSUSHI
FUJIE HIDEKAZU
UCHIYAMA TADASHI
HANAWA TETSUSHI
Application Number:
JP2013193017A
Publication Date:
March 30, 2015
Filing Date:
September 18, 2013
Export Citation:
Assignee:
ISUZU MOTORS LTD
International Classes:
F01N3/023; F01N3/025; F01N3/027; F01N3/029; F01N3/031; F01N3/20
Domestic Patent References:
| JP2009191693A | 2009-08-27 | |||
| JP2003106140A | 2003-04-09 | |||
| JP2007524786A | 2007-08-30 | |||
| JP2011185213A | 2011-09-22 |
Attorney, Agent or Firm:
Nobuo Kinutani