Title:
内燃機関の排気浄化装置
Document Type and Number:
Japanese Patent JP5131393
Kind Code:
B2
Abstract:
In an internal combustion engine, inside of an engine exhaust passage, a hydrocarbon feed valve (15) and an exhaust purification catalyst (13) are arranged. The concentration of hydrocarbons which flow into the exhaust purification catalyst (13) is made to vibrate by within 200 ppm or more predetermined amplitude and within a 5 second or more predetermined period. At this time, when a predetermined amount or more of NO x is stored in the exhaust purification catalyst (13) or can be stored, the concentration of hydrocarbons flowing into the exhaust purification catalyst (13) is temporarily increased to desorb NO x which is stored at the exhaust purification catalyst (13).
Inventors:
Yuki
Kohei Yoshida
Mikio Inoue
Umemoto Jujo
Kohei Yoshida
Mikio Inoue
Umemoto Jujo
Application Number:
JP2011532066A
Publication Date:
January 30, 2013
Filing Date:
October 18, 2010
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F01N3/08; B01D53/94; F01N3/10; F01N3/36
Domestic Patent References:
| JP2008002451A | 2008-01-10 | |||
| JP2006501390A | 2006-01-12 | |||
| JP2005113801A | 2005-04-28 |
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tetsuro Shimada
Shinji Mitsuhashi
Koichi Ito
Tatsuki Sone
Jun Tsuruta
Tetsuro Shimada
Shinji Mitsuhashi
Koichi Ito
Tatsuki Sone