Switching oil gallery de-aeration
US9790820B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 18, 2015 |
| Grant date | Oct 17, 2017 |
| Priority date | — |
| Expiry date | Jan 5, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2820/01
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A switching oil gallery de-aeration arrangement for a switchable valve arrangement is provided, including a switching control valve that activates or deactivates the switchable valve arrangement. The switching control valve is movable from a first position, in which pressurized hydraulic fluid from a hydraulic lash adjuster fluid gallery flows to a passage on the hydraulic lash adjuster and through a switching hydraulic fluid gallery to a check valve such that pressurized hydraulic fluid from the hydraulic lash adjuster fluid gallery pressurizes the switching hydraulic fluid gallery and is released through the check valve, and a second position, in which pressurized hydraulic fluid having a higher pressure sufficient for carrying out a switching function of the switchable valve arrangement is delivered by the switching hydraulic fluid gallery via the second intersection to the second port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.