Transmission system with lamella coupling for all wheel drive vehicle
US4656889A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 3, 1986 |
| Grant date | Apr 14, 1987 |
| Priority date | — |
| Expiry date | Mar 3, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19153
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An arrangement for a four wheel drive motor vehicle which increases the rotational moment transfer from the front axle to the rear axle in the case of a large rotational speed differential between the two axles. The arrangement includes a lamella or plate clutch arranged between the front axle and the rear axle. The front axle is directly driven by the gear change transmission and the rear axle is indirectly driven by the front axle. A one way clutch and a reducing transmission are interposed with respect to the plate clutch in such a way that the characteristic curve for rotational moment transfer versus axle rotational speed differential exhibits a flat slope during normal driving conditions (relatively small speed differentials) and an increasingly steep slope during hazardous driving conditions (relatively large speed differentials).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.