Hybrid powertrain motor torque control during overrunning transmission
US12351160B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2024 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Sep 3, 2044 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2710/083
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hybrid vehicle includes an engine, an electric machine, a disconnect clutch configured to selectively couple the engine to the electric machine, a transmission having an input shaft operably coupled to the electric machine and an output shaft operably coupled to a driveline, and a controller programmed to, in response to (i) the disconnect clutch being disengaged and (ii) a speed difference between the input and output shafts being less than a threshold, limit torque commanded to the electric machine to a value that is less than a rated torque of the electric machine regardless of driver-demand torque, and further programmed to, in response to (i) the disconnect clutch being disengaged, (ii) a request to start the engine, and (iii) the speed difference exceeding the threshold, permit a torque command to the electric machine that exceeds the value to reduce the speed difference between the input and output shafts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.