发明名称 |
Vorrichtung und Verfahren zur Fehlerermittlung bei einem automatischen Getriebe |
摘要 |
When a shift routine is not being executed in an automatic transmission and a difference between an actual turbine speed and a calculated synchronous speed is equal to, or greater than, a preset value alpha, a difference DeltaNT between an estimated turbine speed and the actual speed when the automatic transmission is in a neutral state is calculated. When DeltaNT is equal to, or less than, a preset value beta, it is determined that a failure related to the neutral state of the automatic transmission has occurred. Also, when DeltaNT is greater than a preset value beta, it is determined that a failure related to slipping of a frictional engaging element has occurred. |
申请公布号 |
DE10346922(B4) |
申请公布日期 |
2008.05.08 |
申请号 |
DE2003146922 |
申请日期 |
2003.10.09 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA, TOYOTA |
发明人 |
NAGATA, KOJI;KASHIHARA, YUUJI;TAKANAMI, YOJI;NOZAKI, KAZUTOSHI;MURASUGI, AKIO |
分类号 |
F16H61/12;F16H59/14;F16H59/42;F16H59/68 |
主分类号 |
F16H61/12 |
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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