Variable pressure gain control system for a CVT
US6019700A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1998 |
| Grant date | Feb 1, 2000 |
| Priority date | — |
| Expiry date | Jun 23, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/66272
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
For achieving a high accuracy line pressure control and a high line pressure, a valve control system outputs a first signal pressure to a primary regulator valve as a second signal pressure when the first signal pressure is low. The valve control system outputs a gain pressure higher than the first signal pressure to the primary regulator valve as the second signal pressure when the first signal pressure is high. A change amount of the line pressure from the primary regulator valve concerning with a change amount of the first signal pressure is a gain. The gain is a low gain which increases the accuracy of the line pressure control when the first signal pressure is low, and the gain is a high gain with which the high line pressure is output when the first signal pressure is high.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.