Brake system having a plurality of operational sources
US6142584A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1999 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | Feb 26, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/686
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A brake system (10) having a control member (12) through which a remotely located master cylinder (18) is selectively supplied with either a first operational fluid developed by a first pump (14), a second operational fluid developed by a second pump arrangement (500,600) or a third operational fluid from a storage system (302) as a function of a brake force applied to an input push rod (16) and a sensed flow of operational fluid through a shuttle valve (64) to the master cylinder for effecting a desired brake application. A electronic control unit (200) receives an input signal corresponding to the brake force and a sensed flow to activate the second pump arrangement (500,600). Whenever the fluid pressure of the first operational fluid is insufficient, the second pump is activated and the second operational fluid supplants the operation of the master cylinder (18) by the first operational fluid to effect the desired brake application. Whenever both the first fluid pressure in the first operational fluid and the second fluid pressure in the second operational fluid are insufficient, an operator applies additional the input force to the input member (16) and moves an actuation pisto…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.