Powertrain torque control during shift to four-wheel drive in automated-driving mode
US12187305B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2022 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Jan 11, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Y2400/421
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle includes a primary axle, a secondary axle, and a powertrain. The powertrain has an engine coupled to the primary axle and selectively coupled to the secondary axle. The vehicle also includes a clutch associated with the secondary axle. A controller is programmed to, responsive to (i) a request to shift from two-wheel drive to four-wheel drive and (ii) a current engine-torque command exceeding a torque limit associated with the clutch, override the current engine-torque command to reduce a torque of the engine below the torque limit, and, responsive to the torque of the engine being less the torque limit, command engagement of the clutch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.