Invention Grant
- Patent Title: Internal combustion engine exhaust gas system and control method of the same
- Patent Title (中): 内燃机排气系统及其控制方法相同
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Application No.: US12528120Application Date: 2008-02-19
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Publication No.: US08332129B2Publication Date: 2012-12-11
- Inventor: Takafumi Yamada , Hisashi Ohki
- Applicant: Takafumi Yamada , Hisashi Ohki
- Applicant Address: JP Aichi-ken
- Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee Address: JP Aichi-ken
- Agency: Sughrue Mion, PLLC
- Priority: JP2007-043415 20070223
- International Application: PCT/IB2008/000529 WO 20080219
- International Announcement: WO2008/102260 WO 20080828
- Main IPC: B60T7/12
- IPC: B60T7/12 ; G05D1/00 ; G06F7/00 ; G06F17/00 ; F02B47/08 ; F02B33/44 ; F02M25/07 ; F01N3/00

Abstract:
An internal combustion engine exhaust gas system includes a filter arranged in an exhaust passage of the internal combustion engine, a fuel adding valve which is arranged upstream of the filter and supplies fuel into the exhaust passage, and a low-pressure exhaust gas recirculation apparatus that removes some of the exhaust gas from downstream of the filter as EGR gas. An EGR rate is controlled taking into account the amount of fuel supplied by the fuel adding valve such that an oxygen concentration of intake gas, which is drawn into a cylinder of the internal combustion engine in a state in which the EGR gas that is introduced by the low-pressure exhaust gas recirculation apparatus is mixed with air introduced into an intake passage, is constant before and after fuel is supplied by the fuel adding valve.
Public/Granted literature
- US20100211293A1 INTERNAL COMBUSTION ENGINE EXHAUST GAS SYSTEM AND CONTROL METHOD OF THE SAME Public/Granted day:2010-08-19
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