Crankshaft, transmission or camshaft sensor, diagnosis system and method implementing such a sensor
US11530935B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 26, 2018 |
| Grant date | Dec 20, 2022 |
| Priority date | — |
| Expiry date | Aug 18, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C5/0808
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a crankshaft, transmission or camshaft sensor (10) for a motor vehicle, intended for being connected to an engine control unit (30) by a cable (20). The sensor comprises a processing module (17) and a voltage-modifying circuit (18) configured to generate an output signal via an output port (12) of the sensor (10) allowing a diagnosis module (36) of the engine control unit (30) to detect and identify faults of the sensor (10) or the cable (20). In particular, the processing module (17) is configured to provide on its output port (172), when the toothed target (14) is immobile, a predetermined pattern representing the fact that the toothed target (14) is immobile, this predetermined pattern corresponding to a status change of the output port (172) of the processing module (17) with a predetermined time and repeated periodically. The invention likewise relates to a diagnosis system (1) comprising such a sensor (10), a cable (20) and an engine control unit (30). The invention also relates to a diagnosis method (50) implemented by said diagnosis system (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.