发明名称 |
Secondary air feeding apparatus and method of detecting abnormality in the apparatus |
摘要 |
The invention relates to a secondary air feeding apparatus and a method of detecting an abnormality in the apparatus capable of making a precise determination on abnormalities in components and detecting operational failures as well. According to one aspect of the invention, the opening-closing state of opening-closing means (ASV) is switched during the operation of an air pump, and abnormalities in respective components are detected on the basis of pressure values and pressure fluctuation values detected by a pressure sensor disposed between the air pump and the ASV before and after the switching of the opening-closing means.
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申请公布号 |
US6918245(B2) |
申请公布日期 |
2005.07.19 |
申请号 |
US20030449670 |
申请日期 |
2003.06.02 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
HIROOKA SHIGEMASA;YOSHIOKA MAMORU |
分类号 |
F02D45/00;F01N3/22;F01N3/30;F01N3/32;(IPC1-7):F01N3/00 |
主分类号 |
F02D45/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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