Apparatus for setting park brakes of a heavy vehicle during a failure of a service brakes holding function of the vehicle
US8820856B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Aug 24, 2012 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Dec 21, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T2270/402
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An apparatus is provided for a vehicle having components of a parking brake system and components of a service brake system. The apparatus comprises a normally-energized solenoid operatively coupled to components of the parking brake system and for, when de-energized, exhausting air pressure in at least some components of the parking brake system to set park brakes. The apparatus further comprises an electronic controller arranged to (i) monitor a combination of one or more signals indicative of a service brakes holding function, (ii) monitor a combination of one or more signals indicative of a fault condition, and (iii) provide one or more signals to de-energize the normally-energized solenoid to exhaust air pressure in at least some components of the parking brake system and thereby to set park brakes when both signals indicative of a service brakes holding function and signals indicative of a fault condition of the vehicle are detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.