发明授权
- 专利标题： Device for evaluating catalyst performance deterioration
- 专利标题（中）： 评估催化剂性能恶化的装置
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申请号： US734774申请日： 1996-10-22
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公开(公告)号： US5722238A公开(公告)日： 1998-03-03
- 发明人: Toshio Tanahashi , Masakatsu Sanada , Koji Yokota , Shinichi Matsunaga , Hideo Sobukawa , Ichiro Konomi , Tadashi Suzuki
- 申请人： Toshio Tanahashi , Masakatsu Sanada , Koji Yokota , Shinichi Matsunaga , Hideo Sobukawa , Ichiro Konomi , Tadashi Suzuki
- 申请人地址： JPX Toyota JPX Aichi
- 专利权人： Toyota Jidosha Kabushiki Kaisha,Kabushiki Kaisha Toyota Chuo Kenkyusho
- 当前专利权人： Toyota Jidosha Kabushiki Kaisha,Kabushiki Kaisha Toyota Chuo Kenkyusho
- 当前专利权人地址： JPX Toyota JPX Aichi
- 优先权： JPX7-277780 19951025; JPX8-161999 19960621
- 主分类号： F02D45/00
- IPC分类号： F02D45/00 ; F01N3/20 ; F01N11/00
摘要：
A device for evaluating catalyst performance deterioration includes an air-fuel ratio sensor and a temperature sensor. The degree of catalyst performance deterioration per unit time is calculated based on the concentration of oxygen in the exhaust gas and the temperature of the catalyst. The deterioration of the catalyst is evaluated on the basis of the accumulated value of the degree of catalyst performance deterioration per unit time.
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