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公开(公告)号:US20130073174A1
公开(公告)日:2013-03-21
申请号:US13233574
申请日:2011-09-15
CPC分类号: F02D41/22 , F01M11/10 , F02D2041/228 , F02D2041/288 , F02D2250/08 , Y02T10/40
摘要: Methods and systems are provided for an engine including a crankcase. A condition of the engine may be diagnosed based on frequency content of crankcase pressure. Different types of degradation may be distinguished based on a frequency content of multiple frequencies of the crankcase pressure. Thus, a degraded engine component may be identified in a manner that reduces service induced delay.
摘要翻译: 为包括曲轴箱的发动机提供方法和系统。 可以基于曲轴箱压力的频率含量来诊断发动机的状况。 可以基于曲轴箱压力的多个频率的频率含量来区分不同类型的劣化。 因此,可以以减少服务引起的延迟的方式来识别劣化的引擎部件。