Method for smoothing skip up-shifts in automatic/semi-automatic mechanical transmission system
US4913269A · kind A · utility
9Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1989 |
| Grant date | Apr 3, 1990 |
| Priority date | — |
| Expiry date | Jan 3, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2710/1005
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method for smoothing skip up-shifts in an automated mechanical transmission system (10) without requiring direct sensing of the rotational speed of the engine (14) is provided. The method involves delaying re-engagement of the master clutch (16) after engagement of a selected transmission ratio (E) during a skip up-shift by a period of time (T) directly proportional to the number (N) of ratios skipped and/or a function of the identity of the newly engaged ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.