Brake booster leak detection system
US8899033B2 · kind B2 · utility
1Cited by
3References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2008 |
| Grant date | Dec 2, 2014 |
| Priority date | — |
| Expiry date | Nov 8, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T17/18
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A control system for evaluating a brake booster system includes an engine evaluation module that detects an engine off condition. A pressure evaluation module, during the engine off condition, monitors hydraulic brake line pressure, detects a change in brake booster pressure, and determines a brake booster vacuum decay rate based on the change in brake booster pressure. A fault reporting module detects a brake booster system fault based on the brake line pressure and the brake booster vacuum decay rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.