Dual feed hydraulic lash adjuster for valve actuating mechanism
US9157340B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2014 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Mar 20, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2001/2444
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A dual feed hydraulic lash adjuster includes a plunger assembly slidingly disposed in a lash adjuster body and having an end adapted to cooperate with a valve actuating mechanism, the plunger assembly forming a low-pressure first chamber and a high-pressure second chamber with the body, the plunger assembly having a first aperture fluidly communicating with the first chamber, a passageway fluidly communicating with the first chamber, and a second aperture fluidly communicating with the passageway, and a separate fluid pressure separator disposed in the plunger assembly between the first aperture and the second aperture to prevent passage of hydraulic fluid between the first chamber and the passageway, wherein a passage is provided through the fluid pressure separator to provide for evacuation of air from the lash adjuster.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.