Range shift control
US6042504A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1998 |
| Grant date | Mar 28, 2000 |
| Priority date | — |
| Expiry date | Apr 1, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/1926
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control for enhanced range shifting in a computer (48) assisted vehicular compound transmission having a main section (16A) shifted by a manually operated shift lever (31) and a range section (16B) shifted in response to operation of a range shift selector, such as sensing shift lever (31) passing through a predetermined actuation point (AR) in the shift pattern. During a compound shift, if the main section is engaged prior to completion of the range shift, the engine is fueled to a synchronous speed for engaging the target ratio (ES=OS*GR.sub.T) and the range section shift is completed without undue wear or damage to the range section synchronized clutch (130).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.