Title:
内燃機関の排気浄化装置
Document Type and Number:
Japanese Patent JP4304527
Kind Code:
B2
Abstract:
The system has a particulate filter (17) placed in an exhaust pipe (14) to trap particulate matter evacuated from an internal combustion engine (10). An exhaust butterfly valve (18) placed downstream of the filter regulates superficial section of the pipe. A differential pressure sensor (34) detects differential pressure between parts of the pipe in upstream and downstream of the filter. The valve is activated based on the pressure for combustion of the matter to regenerate the filter. An electronic control device determines if the valve functions badly based on the variation of pressure. An independent claim is also included for a method for purifying an exhaust gas.
Inventors:
Yasuhiko Otsubo
Tatsuhisa Yokoi
Shigehiro Matsuno
Ikuo Yasuda
Tatsuhisa Yokoi
Shigehiro Matsuno
Ikuo Yasuda
Application Number:
JP2006182988A
Publication Date:
July 29, 2009
Filing Date:
July 03, 2006
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F01N3/02; B01D53/94; F01N9/00; F02D9/04; B01D46/42
Domestic Patent References:
| JP2003074328A | ||||
| JP8291707A |
Attorney, Agent or Firm:
Hironobu Onda
Makoto Onda
Makoto Onda