Title:
INTERNAL COMBUSTION ENGINE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2005/056998
Kind Code:
A1
Abstract:
An internal combustion engine system has a diesel engine (11), a filter (1) provided in a flow path (exhaust gas flow path (21)) for exhaust gas from the diesel engine (11), and an exhaust gas recirculation device for sending a portion of the exhaust gas from the diesel engine (11) to the suction side. Gas-detecting means (18) is provided on the upstream side of the filter (1), and this means (18) detects a specific gas component in the exhaust gas fed to the filter (1). Further, a controller (19) is provided, and depending on the increase and decrease of the specific gas component detected, the controller (19) controls the amount of lift of an EGR valve (16) of the exhaust gas recirculation device to regulate the amount of exhaust gas recirculation. The internal combustion engine system is capable of suppressing an inflow of high concentration CO and HC into the assembled filter, and exhibits an excellent effect where the filter is unlikely to break.
Inventors:
SAKAMOTO HIROFUMI (JP)
Application Number:
PCT/JP2004/017484
Publication Date:
June 23, 2005
Filing Date:
November 25, 2004
Export Citation:
Assignee:
NGK INSULATORS LTD (JP)
SAKAMOTO HIROFUMI (JP)
SAKAMOTO HIROFUMI (JP)
International Classes:
F01N3/021; F01N3/022; F02D41/00; F02D41/02; F02D41/14; F02B37/00; F02M25/07; (IPC1-7): F02D45/00; F01N3/02; F02D21/08; F02D23/00; F02D41/02
Foreign References:
| JP2002371827A | 2002-12-26 | |||
| JP2003247416A | 2003-09-05 | |||
| JP2002322910A | 2002-11-08 | |||
| JPH1181984A | 1999-03-26 |
Attorney, Agent or Firm:
Watanabe, Kazuhira (No.8 Kikuboshi Tower Building 20-18,
Asakusabashi 3-chom, Taito-ku Tokyo 53, JP)
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