Drive state control apparatus for vehicle
US9061685B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 24, 2011 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Feb 3, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D29/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A drive state control apparatus is applied to a vehicle which has not only a transfer including a multi-disc clutch mechanism but also a changeover mechanism interposed in an axle and which can be switched between 2WD and 4WD. When a 2WD-to-4WD changeover condition is satisfied, the multi-disc clutch is immediately switched from a “decoupled state” to a “coupled state.” Meanwhile, a connecting operation of the changeover mechanism is started upon establishment of a state in which left and right rear wheels have no acceleration slippage, and a state in which rotational speeds of first and second axles on opposite sides of the changeover mechanism are approximately equal to each other. In addition, in the case where the left and right rear wheels have acceleration slippage after the 2WD-to-4WD changeover condition has been satisfied, an E/G output reduction control is executed. Thus, the connecting operation can be performed smoothly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.