Control system for automatic transmission for vehicle
US5738607A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1996 |
| Grant date | Apr 14, 1998 |
| Priority date | — |
| Expiry date | Jan 31, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/1926
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In an automatic transmission in which a shifting command can be output by a manual operation of a manual shift lever, in addition to an automatic shifting based on a usual shifting map, the shifting command is possibly executed while preventing an over-revolution and stalling of an engine due to an inappropriate shifting command. If the vehicle speed is in a shifting prohibiting range with a possibility that an over-revolution or stalling of the engine may be caused, when a shifting command is output, the shifting is prohibited, and a timer is set. When the present vehicle speed is translated from the shifting prohibiting range to a shifting permitting range as a result of change in vehicle speed, during counting by the timer, the shifting which has been prohibited is executed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.