Pick-up tube for hydraulically-actuated valve deactivation
US6513480B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2001 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Sep 20, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2810/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine assembly includes an engine block with a laterally extending oil supply gallery formed therethrough. The engine block includes an aperture formed in fluid communication with the oil supply gallery. The hydraulically-actuated valve deactivation system is positioned in fluid communication with the aperture for receiving pressurized oil from the oil supply gallery. A pick-up tube is positioned within the aperture and has a distal end protruding vertically downward into the oil supply gallery to minimize the amount of air in the oil which is communicated to the hydraulically-actuated valve deactivation system. This prevents delay of valve deactivation after engine start-up as oil fills the oil supply gallery and displaces air from the oil supply gallery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.