Method for controlling a motor vehicle at slow speeds by means of a drive differential torque on the rear axle
US11697456B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 18, 2021 |
| Grant date | Jul 11, 2023 |
| Priority date | — |
| Expiry date | Jan 18, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2710/207
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method can be used to control a steer-by-wire steering system for a motor vehicle that has two axles each with two wheels. Two front wheels can be steered by front-wheel steering and two rear wheels can be steered by rear-wheel steering. The motor vehicle includes a single wheel drive that is assigned to one of the two axles and drives the two wheels of the corresponding axle via a differential. The motor vehicle comprises an inboard braking system. The method involves checking the motor vehicle speed and activating rear-axle steering when a motor vehicle speed should be slower than 40 km/hr. With rear-axle steering active, the following steps are performed: deactivating front-wheel steering and rear-wheel steering, determining a reference position of a first steering rod via a reference wheel steering angle, determining a differential drive torque between the rear wheels to reach the reference position via a control unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.