Powertrain torque control during a transmission shift
US11866049B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2022 |
| Grant date | Jan 9, 2024 |
| Priority date | — |
| Expiry date | Nov 17, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2710/0666
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle includes an engine, a transmission, and a controller. The transmission is configured to transfer power from the engine to at least one drive wheel to propel the vehicle. The controller programmed to, in response to a command to shift the transmission, reduce a torque of the engine from a desired engine torque to a reduced value based on a flare at an input to the transmission during the shift. The controller is further programmed to, in response to the reduced value exceeding a threshold, retard an engine spark and maintain operation of all cylinders of the engine to reduce the torque of the engine during the shift. The controller is further programmed to, in response to the reduced value being less than the threshold, retard the engine spark and shutdown at least one cylinder of the engine to reduce the torque of the engine during the shift.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.