发明名称 |
Failure diagnosis apparatus for throttle valve actuating device |
摘要 |
A failure diagnosis apparatus for a throttle valve actuating device is disclosed. The throttle valve actuating device has an actuator for actuating a throttle valve provided in an intake system of an internal combustion engine and biasing elements for biasing the throttle valve to a predetermined retention opening. A feedback control of the throttle valve is performed so that an opening of the throttle valve coincides with a first predetermined opening. After the throttle valve is controlled to the first predetermined opening, a feedback control of the throttle valve is performed so that an opening of the throttle valve coincides with a second predetermined opening. It is determined that the throttle valve actuating device has failed when the time period during which the opening of the throttle valve remains in a predetermined determination range including the second predetermined opening, is shorter than a predetermined time period when performing the feedback control to the second predetermined opening.
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申请公布号 |
US6789525(B2) |
申请公布日期 |
2004.09.14 |
申请号 |
US20030612249 |
申请日期 |
2003.07.01 |
申请人 |
HONDA GIKEN KOGYO KABUSHIKI KAISHA |
发明人 |
ISHIGURO TETSUYA;AKAZAKI SHUSUKE;SATO MASAHIRO;HASHIMOTO EIJI |
分类号 |
F02D9/02;F02D11/10;F02D41/14;F02D41/20;F02D41/22;F02D45/00;(IPC1-7):F00D1/00 |
主分类号 |
F02D9/02 |
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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