Vehicle brake boost assist control
US6623088B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2001 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | May 11, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S303/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle hydraulic braking system responds to detection of an operator intended high braking intensity event to isolate vehicle brakes from the master cylinder and activate a motor driven pump to generate a maximum predetermined supply pressure, calibrated to provide activation of an anti-lock braking system, to the brake apply valves for an initial predetermined time. Thereafter, the supply pressure is reduced via an electrically controllable pressure relief valve responsive to sensed vehicle deceleration so as to decrease the supply pressure provided to the apply valve to a level just sufficient to provide the sensed vehicle deceleration. The high intensity braking event is detected via a rate of change of master cylinder pressure, pedal force or pedal travel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.