Brake device
US8573714B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2009 |
| Grant date | Nov 5, 2013 |
| Priority date | — |
| Expiry date | Dec 21, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/662
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
To make a brake device generate a required braking force, a hydraulic control section switches, according to the relative magnitude between the required braking force and a braking force exerted by braking operation, between drive of a pump motor and non-drive of the pump motor and a master cut valve reduces the flow of brake fluid in the direction to a master cylinder. By this, a wheel cylinder maintains hydraulic pressure capable of generating the required braking force. As a result, the pump motor is not necessarily always driven when the required braking force is generated, and the operating time period of the pump motor is reduced. As a result, a load on the pump motor is reduced to enhance durability of the pump motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.