发明申请
- 专利标题： Exhaust emission control device of an internal combustion engine
- 专利标题（中）： 内燃机的废气排放控制装置
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申请号： US11907915申请日： 2007-10-18
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公开(公告)号： US20080276920A1公开(公告)日： 2008-11-13
- 发明人: Kinichi Iwachido , Hiroaki Ohhara , Tetsuya Watanabe
- 申请人： Kinichi Iwachido , Hiroaki Ohhara , Tetsuya Watanabe
- 优先权： JP2006-294075 20061030
- 主分类号： F02D41/00
- IPC分类号： F02D41/00
摘要：
As forcible modulation parameters, a cycle and an amplitude are set so that O2 and CO concentrations in emissions at a catalyst inlet can be increased, and based upon the preset parameters, forcible modulation that forcibly fluctuates an exhaust air-fuel ratio is carried out to facilitate catalysis for early activation, and the forcible modulation is then switched to O2-F/B control.