Method for controlling a speed difference between the front wheels and rear wheels of a four-wheel drive vehicle
US8670910B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2010 |
| Grant date | Mar 11, 2014 |
| Priority date | — |
| Expiry date | Feb 11, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2552/30
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method for controlling a speed difference between speed of wheels of a front axle and speed of wheels of a rear axle of a four-wheel drive vehicle. The method: determines an initial speed difference set point based on the speed of the vehicle; determines one or more intermediate speed difference set points based on one or more operational parameters of the vehicle; modulates the initial speed difference set point based on the intermediate speed difference set points to obtain a final speed difference set point; measures the speed difference and compares the measured speed difference with the final speed difference set point; and controls the measured speed difference, so that the measured speed difference reaches the final speed difference set point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.