Four-wheel-drive vehicle
US9701196B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 5, 2013 |
| Grant date | Jul 11, 2017 |
| Priority date | — |
| Expiry date | Jul 12, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2552/40
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A four-wheel-drive vehicle includes a first driving force transmission system and a second driving force transmission system. A control device controls the second driving force transmission system. The control device includes a road surface state determination section that determines whether a coefficient of friction of a road surface is equal to or higher than a predetermined value based on an index value regarding the coefficient of friction of the road surface, controls a dog clutch such that the dog clutch is engaged irrespective of the index value regarding the coefficient of friction of the road surface when an ignition switch is brought into the on-state, and controls the dog clutch such that the dog clutch is brought into the disengaged state when it is determined that the coefficient of friction of the road surface is equal to or higher than the predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.