Automatic transmission control system with direct electronic swap-shift control
US6961646B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2003 |
| Grant date | Nov 1, 2005 |
| Priority date | — |
| Expiry date | Nov 13, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S475/903
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control system and control method for an automotive vehicle having a multiple-ratio automatic transmission having two gearsets arranged in series relationship for delivering vehicle engine power to vehicle traction wheels, each gearset being controlled using friction elements that establish multiple torque flow paths, each gearset being characterized by at least two ratios, which define an overall transmission ratio, synchronous shifting of the gearsets effecting at least one swap-upshift and at least one swap-downshift in the overall transmission ratio, the control system compensating during a swap-shift progression for dynamic interaction between the gearsets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.