- 专利标题： Exhaust gas purification device of internal combustion engine
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申请号： US09979064申请日： 2001-11-16
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公开(公告)号： US06644022B2公开(公告)日： 2003-11-11
- 发明人: Shinya Hirota , Toshiaki Tanaka , Kazuhiro Itoh , Takamitsu Asanuma , Koichiro Nakatani , Koichi Kimura
- 申请人： Shinya Hirota , Toshiaki Tanaka , Kazuhiro Itoh , Takamitsu Asanuma , Koichiro Nakatani , Koichi Kimura
- 优先权： JP2000-092530 20000329; JP2000-222828 20000724
- 主分类号： F01N300
- IPC分类号： F01N300
摘要：
A particulate filter (22) is arranged in an exhaust passage of an engine, while an exhaust throttle valve (45) is arranged in the exhaust passage downstream of the particulate filter (22). The exhaust throttle valve (45) is fully closed once, then fully opened cyclically. At that time, the flow velocity of the exhaust gas is increased for just an instant in a pulse-like manner, whereby masses of particulate are separated from the particulate filter 22 and discharged.