Vehicle powertrain and method for changing a gear driving configuration of a transmission of the vehicle powertrain
US10160453B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2016 |
| Grant date | Dec 25, 2018 |
| Priority date | — |
| Expiry date | Apr 22, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2037/023
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method for changing a gear driving configuration of a discrete gear transmission (DGT) in a powertrain including an engine operatively connected to a continuously variable transmission (CVT). The DGT has a DGT input shaft operatively connected to a CVT driven pulley, a plurality of gears having a plurality of gear driving configurations and a DGT output shaft selectively operatively connected to the DGT input shaft based on the gear driving configuration. Responsive to a gear shift request, a target driven pulley speed is determined for synchronizing the DGT input shaft with the DGT output shaft for the desired gear driving configuration. The engine is controlled to change an engine speed to the target engine speed corresponding to the determined target driven pulley speed. Responsive to the DGT input shaft being synchronized with the DGT output shaft, the current gear driving configuration is changed to the desired gear driving configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.