Vehicle brake device and vehicle brake device control method
US8851579B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2011 |
| Grant date | Oct 7, 2014 |
| Priority date | — |
| Expiry date | Jul 10, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/686
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In a BBW type vehicle brake device, first and second fluid paths that are connected to each other are both connected to a slave cylinder with a simple structure that is equipped with a single fluid pressure chamber, thereby enabling wheel cylinders having two lines to be operated and eliminating the need for a complicated tandem type slave cylinder. When the slave cylinder becomes inoperable due to malfunction of the power supply, by opening first and second master cut valves and closing the communication control valve, braking is carried out by means of brake fluid pressure generated by a master cylinder. In this process, since the interconnection between the first and second fluid paths is blocked by closing the communication control valve, even if the wheel cylinder of one of the brake lines suffers from a liquid leakage malfunction, the other remained brake line is enabled to ensure a braking force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.