Apparatus and method for controlling a speed change of an automatic transmission
US6216073A · kind A · utility
8Cited by
15References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1998 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | Apr 10, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S477/904
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A down-shift is carried out when a) the sum of a dry force of a vehicle and a predetermined value, is smaller than a running resistance, and b) when an accelerator opening is larger than a threshold value which is based on vehicle speed, road inclination, and speed change step (gear position).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.