Pressure regulation valve control device
US10677349B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2017 |
| Grant date | Jun 9, 2020 |
| Priority date | — |
| Expiry date | Jul 19, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/1264
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Pressure regulation valve control device has line pressure regulation valve (4) having line pressure solenoid (41) and line pressure spool valve (42) and CVT control unit (8) controlling secondary pressure (Psec) by actuating the line pressure spool valve (42) by solenoid pressure (Psol) produced by controlling current command value (I) to the line pressure solenoid (41). CVT control unit (8) has abnormality control unit (81). The abnormality control unit (81) is configured to, when decrease in secondary pressure (Psec) is detected during travel, execute, during travel, abnormality control that increases solenoid pressure (Psol), supplied to line pressure spool valve (42) from line pressure solenoid (41), more than solenoid pressure (Psol) of a time when the decrease in secondary pressure (Psec) is detected. With this, even when the decrease in the pressure is detected during travel, the decrease in the pressure is suppressed during travel while reducing influence on vehicle travel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.