Failsafe operation of a hybrid brake system for a vehicle
US7976109B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2003 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | Sep 21, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/66
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hybrid brake apparatus for a vehicle includes a front hydraulically actuated brake circuit, a rear electrically actuated brake circuit, and a controller. The front hydraulically actuated brake circuit includes a master cylinder for providing pressurized fluid to the front brake circuit in response to an input applied to the master cylinder for applying a frictional front braking force. The rear electrically actuated brake circuit is controllable in response to the input for providing a frictional rear braking force. The rear brake circuit is controlled in accordance with a first predetermined relationship between the input and rear braking force during normal operation of the front brake circuit. If the controller detects a degradation of front braking force, the rear brake circuit is controlled in accordance with a second predetermined relationship between the input and the rear braking force, to thereby compensate for the degradation of front braking force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.