Control of hydraulic brake system and method
US9126570B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2013 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Oct 26, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T2270/604
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hybrid or electric vehicle includes a hydraulic brake system having an active vacuum booster with an active boost control valve actuated by at least one controller. An isolation valve is disposed in a fluid circuit that fluidly connects a master cylinder to hydraulic brakes. A brake pedal is capable of moving in an initial deadband displacement range when initially depressed by an operator of the vehicle. While in the initial deadband displacement range, the controller selectively activates the isolation valve to inhibit fluid flow from at least a portion of the fluid circuit to the master cylinder based at least upon an operating state of the active boost control valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.