Brake by wire system with BTSI based vehicle operation control
US6709069B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2001 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Oct 23, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/5951
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A brake by wire system is integrated with a brake transmission solenoid interlock (BTSI) unit to prevent a vehicle transmission from being shifted out of a park mode into a drive mode until a brake system operational state is determined. The BTSI is activated by a supplemental control unit, which generates a transmission release signal generated by a controller in response to simultaneous presence of a brake intent signal from one or more brake pedal sensors and a determination of an operational state of the brake system. The supplemental control unit includes a switch responsive to the transmission release signal to close the BTSI activating circuit and permit release of the transmission. In a split brake system with two brake controllers, the supplemental control unit may include a switch controlled by a logic (OR, AND) circuit or a pair of switches in an equivalent logical circuit configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.