Distributed accumulator for hydraulic camless valve actuation system
US6755162B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 31, 2003 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | Mar 31, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2301/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A manifold is provided for housing high pressure oil on a camless engine. A body of the manifold has first, second and third channels formed therein lengthwise in the body. Switching valves on the body are operative to alternately communicate oil in the channels with cylinder valves of an engine to which the manifold is mounted to affect movement of the cylinder values. A distributed accumulator is positioned in at least one of the channels and includes at least one compliant pocket filled with a compressible fluid. The accumulator is configured such that the pocket attenuates pressure oscillations in the oil resulting from oil flow oscillations during actuation of the switching valves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.