发明名称 Method for diagnosing incorrect valve lift adjustment in an internal combustion engine
摘要 If, when a valve lift adjustment is triggered in an inlet valve of an internal combustion engine, no valve lift adjustment actually takes place due to a defect in the adjustment mechanism, the air/fuel ratio (lambda) or even a different operating parameter for example the engine speed and torque changes in an unintended manner. By monitoring this operating parameter the operation control device can deduce a defect in the adjustment mechanism.
申请公布号 US6948358(B2) 申请公布日期 2005.09.27
申请号 US20030614346 申请日期 2003.07.08
申请人 SIEMENS AKTIENGESELLSCHAFT 发明人 WEISS FRANK;ZHANG HONG
分类号 F01L1/46;F01L13/00;F02B77/08;F02D13/02;F02D41/14;F02D41/22;(IPC1-7):G01M15/00 主分类号 F01L1/46
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