Predictive-based control for transmission shifting
US11414081B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2021 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | Feb 4, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/0462
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A powertrain includes a transmission having an input shaft, an output shaft, and a plurality of clutches engageable in various combinations to establish varying power flow paths between the input and output shafts. A controller is programmed to, responsive to a shift of the transmission: reduce torque capacity of an off-going one of the clutches and increase torque capacity of an oncoming one of the clutches during a torque transfer phase of the shift, and, in response to an inertia phase of the shift, continue to command non-zero torque capacity to the off-going clutch such that the off-going clutch brakes the output shaft throughout an entire duration of the inertia phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.