发明授权
- 专利标题: Control method of exhaust gas purification system and exhaust gas purification system
- 专利标题(中): 废气净化系统和废气净化系统的控制方法
-
申请号: US12223389申请日: 2007-01-10
-
公开(公告)号: US08001774B2公开(公告)日: 2011-08-23
- 发明人: Takao Onodera , Takashi Haseyama , Yoshinobu Watanabe , Takuro Iwashita , Kenji Hagio , Tatsuo Mashiko
- 申请人: Takao Onodera , Takashi Haseyama , Yoshinobu Watanabe , Takuro Iwashita , Kenji Hagio , Tatsuo Mashiko
- 申请人地址: JP Tokyo
- 专利权人: Isuzu Motors Limited
- 当前专利权人: Isuzu Motors Limited
- 当前专利权人地址: JP Tokyo
- 代理机构: Staas & Halsey LLP
- 优先权: JP2006-024181 20060201
- 国际申请: PCT/JP2007/050158 WO 20070110
- 国际公布: WO2007/088714 WO 20070809
- 主分类号: F01N3/00
- IPC分类号: F01N3/00 ; F01N1/00
摘要:
At regeneration control while a vehicle mounting an internal combustion engine (10) is parked, both an exhaust throttle valve (13) and an exhaust brake valve (18) are used and if a catalyst temperature index temperature (Tg2) is lower than a predetermined first determining temperature (Tc1), first exhaust gas temperature rise control is conducted that the exhaust brake valve (18) is set to a fully closed side and multiple injection is carried out in in-cylinder fuel injection control, while if a catalyst temperature index temperature (Tg2) is equal to the predetermined first determining temperature (Tc1) or above, second exhaust gas temperature rise control is conducted that the exhaust brake valve (18) is set to an open side, the exhaust throttle valve (13) is set to the fully closed side, and post injection is carried out in the in-cylinder fuel injection control. By this arrangement, while temperature rise efficiency of an exhaust gas flowing into a DPF (12) is enhanced, forced regeneration is carried out efficiently in a short time with avoiding overheat or abnormal combustion at the regeneration control of the DPF (12) while the vehicle is parked.