Patent ID: 6817325
Filing Date: 2004-11-16
Classification: F01L,F01M

Abstract:
A hydraulic manifold assembly for activation and deactivation of valves in a multiple-cylinder internal combustion engine having a pressurized oil source and hydraulically-operable deactivation valve lifters, comprising:a) a first plate having on one side thereof a first mating surface formed in a first pattern delineating first portions of various oil flow galleries in said assembly; b) a second plate having on one side thereof a second mating surface formed in a second pattern delineating second portions of said various oil flow galleries and matable with said first surface; and c) a bonding zone including said first and second mating surfaces wherein said first and second plates are attached to each other, wherein at least one of said first and second plates is formed of a polymer and at least one solenoid valve mounted on said second plate for variably and controllably regulating flow of oil to and from predetermined ones of said deactivation valve lifters.