Method for sensing damage of bearing of engine using vibration signal
US11506570B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 22, 2019 |
| Grant date | Nov 22, 2022 |
| Priority date | — |
| Expiry date | Dec 3, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2233/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.