Smooth upshift control method/system
US5136897A · kind A · utility
20Cited by
14References
36Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 9, 1991 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | May 9, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S477/904
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A robust control method/system for smoothing upshifts in an automated mechanical transmission system (12) is provided. During the torque recovery portion of an upshift, engine deceleration (dES/dt) and the difference between current engine speed (ES) and a target engine speed (ES.sub.SYNC) and actuator response times are utilized to sequence the issuance of command output signals to the friction clutch (24) and throttle override (34) actuators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.