Automatic transmission having C.V.T. system for a vehicle
US4706518A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1986 |
| Grant date | Nov 17, 1987 |
| Priority date | — |
| Expiry date | Jun 19, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H47/065
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An automatic transmission for a front-engine front-drive vehicle comprising a fluid coupling, a belt type continuously-variable speed transmission (C.V.T.), a planetary gear mechanism, a forward-reverse changeover mechanism and a differential device. The planetary gear mechanism includes first and second planetary gear sets, a first intermediate shaft connected to a ring gear of the first planetary gear set and a sun gear of the second planetary gear set, a second intermediate shaft connected to a planetary carrier of the first planetary gear set and a ring gear of the second planetary gear set, and an input shaft connected to an output C.V.T. The forward-reverse changeover mechanism includes a brake disposed between the output of the C.V.T. and the planetary gear sets, and when the first intermediate shaft is braked, the ring gear of the first planetary gear set and the sun gear of the second planetary gear set are held in a stationary position by the brake, thereby a forward range gear train is formed, whereas when the second intermediate shaft is braked, the planetary carrier of the first planetary gear set and the ring gear of the second planetary gear set are held in a station…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.