发明公开
EP2609306A1 VERFAHREN UND VORRICHTUNG ZUR DIAGNOSE EINER KÜHLMITTELPUMPE FÜR EINE BRENNKRAFTMASCHINE
有权
与设备水泵和方法,用于诊断水泵故障诊断内燃机
- 专利标题: VERFAHREN UND VORRICHTUNG ZUR DIAGNOSE EINER KÜHLMITTELPUMPE FÜR EINE BRENNKRAFTMASCHINE
- 专利标题(英): Method and device for diagnosing a coolant pump for an internal combustion engine
- 专利标题(中): 与设备水泵和方法,用于诊断水泵故障诊断内燃机
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申请号: EP11736286.3申请日: 2011-07-22
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公开(公告)号: EP2609306A1公开(公告)日: 2013-07-03
- 发明人: GRAF, Johann
- 申请人: Audi AG
- 申请人地址: 85045 Ingolstadt DE
- 专利权人: Audi AG
- 当前专利权人: Audi AG
- 当前专利权人地址: 85045 Ingolstadt DE
- 优先权: DE102010035366 20100825
- 国际公布: WO2012025178 20120301
- 主分类号: F01P5/14
- IPC分类号: F01P5/14
摘要:
The invention relates to a method and device for diagnosing a switchable coolant pump (2) for circulating a coolant in a coolant circuit (3) of an internal combustion engine (1), wherein an actual value of the cylinder head temperature (19) of the internal combustion engine (1) is detected and wherein the actual value of the cylinder head temperature (19) is compared with a model value of the cylinder head temperature (26) and the functionality of the coolant pump (2) is assessed according to the comparison result (29) or (30).
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