Brake booster vacuum sensor rationality check
US7467544B2 · kind B2 · utility
2Cited by
9References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2006 |
| Grant date | Dec 23, 2008 |
| Priority date | — |
| Expiry date | Dec 9, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L27/007
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A vacuum signal diagnostic system that diagnoses operation of a vacuum sensor of a brake booster system that is in fluid communication with an engine includes a first module that determines whether a vacuum signal of the vacuum sensor is increasing and a second module that compares an engine vacuum signal of the engine to the vacuum signal. A third module indicates a HI fault of the vacuum sensor when the vacuum sensor is increasing and a difference between the engine vacuum signal and the vacuum signal is greater than zero for a first threshold time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.