Full-time four-wheel drive transmission with limited slip clutch
US6238317A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2000 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Mar 21, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19084
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A transmission for a four-wheel drive vehicle having a multi-speed geartrain and power transfer mechanism incorporated into a common housing assembly. The multi-speed geartrain includes a input shaft, a mainshaft, and a plurality of constant-mesh gearsets arranged for selectively coupling the mainshaft to the input shaft for driven rotation at various speed ratios. The mainshaft can be selectively coupled to the power transfer mechanism for establishing two alternative power transmission routes. In particular, a range shift mechanism is provided for establishing a high-range power transmission route and a low-range power transmission route from the mainshaft to the input of an interaxle differential. The torque delivered to the interaxle differential is split between the front and rear drivelines to establish a full-time four-wheel drive mode. A transfer clutch is provided for automatically controlling slip and torque biasing between the outputs of the interaxle differential.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.