发明名称 |
Method for checking the function of a tank venting valve |
摘要 |
The invention relates to a method for checking the function of a tank venting valve between the intake manifold of an internal combustion engine and a fuel tank or a fuel vapor reservoir in which the tank venting valve in operation of the internal combustion engine is opened several times and is closed again after a short opening time and in which during repeated opening and closing the time characteristic of a quantity which is dependent on the opening state of the tank venting valve is recorded. In order to enable a reliable function check of the tank venting valve even in the case of very small and/or time-shifted amplitudes of the quantity to be monitored, it is proposed, according to the invention, that the first derivative of the time characteristic of the quantity be evaluated.
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申请公布号 |
US8359911(B2) |
申请公布日期 |
2013.01.29 |
申请号 |
US20090641522 |
申请日期 |
2009.12.18 |
申请人 |
AUDI, AG;GRUNWALD OLIVER;MEIXNER SIEGFRIED;ENDERS PETER |
发明人 |
GRUNWALD OLIVER;MEIXNER SIEGFRIED;ENDERS PETER |
分类号 |
G01M15/00 |
主分类号 |
G01M15/00 |
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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