Distributed accumulator for hydraulic camless valve actuation system

摘要

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.