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公开(公告)号：US11506570B2
公开(公告)日：2022-11-22
申请号：US16548038
申请日：2019-08-22
发明人： Hyuk Im , Dong-Chune Hong , Jin-Kwon Kim , Dae-Woon Kim , Jun-ho Park , Il-Joong Hwang , Hong-Wook Lee , Hyun-Jun Lim
IPC分类号： G01M15/12 , G01M13/045 , G07C5/08 , G01M15/02
摘要： A method for sensing damage of bearing of engine using a vibration signal may include separating a vibration signal of an engine sensed by a vibration sensor installed at one side of the engine of a vehicle into a vibration signal by combustion knocking and a vibration signal of a bearing installed between a crank pin and a connecting rod; extracting, by a signal processing filter, a signal of a predetermined natural frequency band from the vibration signal of the bearing; determining whether the vibration signal of the bearing is higher than a predetermined bearing damage threshold, in a predetermined engine state condition in order to sense breakage of the bearing during operation of the engine; and confirming that the bearing has been damaged.
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公开(公告)号：US20200064227A1
公开(公告)日：2020-02-27
申请号：US16548038
申请日：2019-08-22
发明人： Hyuk IM , Dong-Chune Hong , Jin-Kwon Kim , Dae-Woon Kim , Jun-ho Park , Il-Joong Hwang , Hong-Wook LEE , Hyun-Jun Lim
IPC分类号： G01M13/045 , G01M15/12 , G01M15/02 , G07C5/08
摘要： A method for sensing damage of bearing of engine using a vibration signal may include separating a vibration signal of an engine sensed by a vibration sensor installed at one side of the engine of a vehicle into a vibration signal by combustion knocking and a vibration signal of a bearing installed between a crank pin and a connecting rod; extracting, by a signal processing filter, a signal of a predetermined natural frequency band from the vibration signal of the bearing; determining whether the vibration signal of the bearing is higher than a predetermined bearing damage threshold, in a predetermined engine state condition in order to sense breakage of the bearing during operation of the engine; and confirming that the bearing has been damaged.
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