Braking booster system leak diagnostics
US8177309B2 · kind B2 · utility
2Cited by
4References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 13, 2008 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Mar 3, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/62
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A leak diagnostic system for a vehicle comprises a calculation module and a diagnostic enabling module. The calculation module calculates a decay rate of a brake booster vacuum. The diagnostic enabling module selectively enables the decay rate calculation based on mass airflow (MAF) into an engine and engine vacuum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.