Synchronizing clutch apply state with continuous ratio shift in a continuously variable transmission
US10046750B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Mar 27, 2017 |
| Grant date | Aug 14, 2018 |
| Priority date | — |
| Expiry date | Mar 27, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2710/024
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A continuously variable transmission, a control system, and a method is provided for synchronizing a clutch application state change and a continuous upshift in a motor vehicle propulsion system having a continuously variable transmission (CVT). The control system and method are configured to determine whether a continuous upshift of the CVT is impending. The continuous upshift is defined as a pulley ratio change exceeding a predetermined threshold for a predetermined pulley ratio change period. If a continuous upshift is impending, the control system and method are configured to alter a clutch engagement state after a predetermined delay period to synchronize the change in clutch engagement state with an engine speed change.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.