Speed change controller for infinite speed ratio transmission
US6436001B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2000 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Jul 21, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/6643
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In an infinite speed ratio transmission, a rotation of an input shaft (1) is input both to a continuously variable transmission (2) and a fixed speed ratio transmission (3). A CVT output shaft (4) of the toroidal continuously variable transmission (2) is joined to a sun gear (5A) of a planetary gear set (5), an output shaft (3C) of the fixed speed ratio transmission (3) is joined to a planet carrier (5B) of the planetary gear set (5), and a vehicle is driven under the output of a ring gear (5C) of the planetary gear set (5). A controller of the infinite speed ratio transmission comprises an actuator (30) which varies an amount of torque transmitted between the input shaft (1) and the CVT output shaft (4). A microprocessor (80) controls the actuator (30) so that a torque in the opposite direction to the vehicle travel direction shown by a selection range of a selector lever (86) is not transmitted by the continuously variable transmission (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.