Invention Grant
- Patent Title: Method and device for detecting reverse rotation of an internal combustion engine
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Application No.: US15562166Application Date: 2016-04-14
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Publication No.: US10371072B2Publication Date: 2019-08-06
- Inventor: Valerie Gouzenne Coutier
- Applicant: CONTINENTAL AUTOMOTIVE FRANCE , CONTINENTAL AUTOMOTIVE GMBH
- Applicant Address: FR Toulouse DE Hannover
- Assignee: CONTINENTAL AUTOMOTIVE FRANCE,CONTINENTAL AUTOMOTIVE GMBH
- Current Assignee: CONTINENTAL AUTOMOTIVE FRANCE,CONTINENTAL AUTOMOTIVE GMBH
- Current Assignee Address: FR Toulouse DE Hannover
- Agency: Young & Thompson
- Priority: FR1553394 20150416
- International Application: PCT/EP2016/000613 WO 20160414
- International Announcement: WO2016/165829 WO 20161020
- Main IPC: G01M15/06
- IPC: G01M15/06 ; F02D41/00 ; F02D41/22 ; F02D41/04 ; G01P3/481 ; G01P13/04

Abstract:
A toothed target rotationally fixed to a shaft of the engine includes a series of n real teeth, followed by m dummy teeth forming a reference zone. For each tooth k, the period of time separating the latter from the preceding tooth k−1 is measured. A signal exhibits at least one transition in level in a portion of the signal corresponding to the passage of the reference zone. A first and a second product are calculated for at least some of the values of k; the ratio between these two products is calculated; and the direction of rotation of the engine is detected, in case of correspondence of the ratio with a first noteworthy value and with a second noteworthy value which are representative, respectively, of rotation in a normal direction and rotation in a reverse direction.
Public/Granted literature
- US20180080395A1 METHOD AND DEVICE FOR DETECTING REVERSE ROTATION OF AN INTERNAL COMBUSTION ENGINE Public/Granted day:2018-03-22
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