Selectable grade and uniform net shoe force braking for railway freight vehicle
US5785392A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 15, 1996 |
| Grant date | Jul 28, 1998 |
| Priority date | — |
| Expiry date | Apr 15, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/665
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A railway freight brake method and apparatus for operating vehicles in a freight train having a locomotive and a number of railway freight vehicles wherein the individual railway freight vehicles can be controlled in a grade descending mode. When desired, such as when the locomotive transmits a grade mode signal to the individual vehicles, the individual vehicles can brake to produce a generally uniform net shoe force on the wheels of the vehicles. The generally uniform net shoe force can be limited on each vehicle to a value or ratio, such as a percentage of net braking ratio of the given vehicle. On-board calculations can be done in a microprocessor to calculate the vehicle brake cylinder pressure corresponding to the desired net shoe force. This calculation can be done using car parameters stored on-board the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.