Shift control system for a multiple ratio automatic transmission
US5758302A · kind A · utility
26Cited by
17References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 11, 1997 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Feb 11, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2312/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control system for a multiple ratio transmission including two overrunning couplings acting in cooperation with friction clutches and brakes to effect controlled shifts between ratios to reduce inertia torque upon engagement of friction brakes associated with speed ratio downshifts that occur in time-controlled stages following a command for a downshift and for establishing an electronic pressure accumulator effect upon speed ratio upshifts following a command for an upshift.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.