Control of a multi-speed vehicle transmission
US10415697B2 · kind B2 · utility
0Cited by
2References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 23, 2015 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Jul 2, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/0227
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method and system of determining the instant gradient of a road, taking into account positive and negative drive torque, may be used to select one of a plurality of shift maps for a vehicle automatic transmission. The invention takes into account vehicle retardation due to braking, and permits consistent adoption of a shift map appropriate to the instant gradient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.