Method and apparatus for selecting a starting gear in an automated mechanical transmission
US5406862A · kind A · utility
22Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 2, 1993 |
| Grant date | Apr 18, 1995 |
| Priority date | — |
| Expiry date | Nov 2, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/1926
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for selecting a transmission starting gear based on calculated gross vehicle weight is disclosed. The vehicle speed and grade are monitored by sensors which provide data to a computer. The computer is programmed to calculate vehicle acceleration from the sensed speed and to adjust the acceleration value so as to eliminate the effect of grade. The gross vehicle weight is then calculated from the adjusted acceleration value. Based on the calculated gross vehicle weight and the existing grade, an appropriate starting gear is automatically selected by the computer from a look-up table stored in memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.