Device, system, and method for controlling transmission torque to provide hill ascent and/or descent assistance using road grade
US9365201B2 · kind B2 · utility
8Cited by
19References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Jun 14, 2016 |
| Priority date | — |
| Expiry date | Mar 15, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/205
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A device, system, and method for controlling transmission torque to provide hill ascent and/or descent assistance to a vehicle includes applying a clutch hold pressure to one or more clutches of a transmission to lock an output shaft of the transmission to resist roll-back of the vehicle. The clutch hold pressure is determined as a function of the tractive effort of the vehicle and is applied based on one or more of a transmission output speed signal, an engine throttle signal, and a vehicle brake signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.