Gear-shift control system of automatic transmission for motor vehicle
US5679092A · kind A · utility
24Cited by
5References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 1995 |
| Grant date | Oct 21, 1997 |
| Priority date | — |
| Expiry date | Oct 5, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/0227
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A gear-shift control system of an automatic transmission, in which gear shift schedule is appropriately changed-over in correspondence with the change of a road surface situation. Low-friction road surface detection device detects a low-friction road surface so as to select the gear shift schedule for the low-friction road surface adopted to start the motor vehicle with second gear. After the selection, a holding device holds the gear shift schedule for the low-friction road surface until an accelerator is pressed next.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.