Method for controlling an automatic gearbox according to a road profile
US7003387B2 · kind B2 · utility
2Cited by
11References
19Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 4, 2002 |
| Grant date | Feb 21, 2006 |
| Priority date | — |
| Expiry date | Aug 27, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/0234
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method for automatically controlling the gearbox of a road vehicle uses a computer using information on displacement speed and transversal acceleration of the vehicle and engine load in order to apply various shifting rules according to the road profile. The gearbox computer applies different gear shifting rules according to the value of a coefficient of activity Kbend depending on the displacement speed of the vehicle (V), the lateral acceleration of the vehicle (Gt) and the derivative thereof in relation to time (dGt/dt).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.