Line pressure control for V-belt type continuously variable transmission
US5063815A · kind A · utility
14Cited by
9References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 11, 1989 |
| Grant date | Nov 12, 1991 |
| Priority date | — |
| Expiry date | Apr 11, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/6608
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A V-belt continously variable transmission includes a torque converter shiftable between a lock-up state and a non lock-up state. A pulley unit includes a driver pulley, a follower pulley, and a V-belt drivingly interconnecting the driver and follower pulleys. At least one of the driver and follower pulleys is hydraulically actuated in response to a line pressure to induce a force which the V-belt is gripped with by the pulley. The line pressure control system is constructed and arranged such that the magnitude of the line pressure is increased when the torque converter is in the non lock-up state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.