Patent ID: 6871620
Filing Date: 2005-03-29
Classification: F01L,F01M

Abstract:
1. An internal combustion engine arrangement comprising: an engine block with at least one combustion chamber with a passageway fluidly communicating with said combustion chamber, said combustion chamber slidably mounting a reciprocating piston therein; a valve controlling fluid communication through said passageway; a camshaft with lobes for contacting said valve to control a position of said valve; a hydraulically powered variable cam timing unit to phase a rotation of said camshaft with respect to a position of said piston within said combustion chamber; a first pump for providing pressurized oil for lubrication to said engine, said first pump additionally providing pressurized oil to said variable cam timing unit through a first check valve; a second pump for providing pressurized oil to said variable cam timing unit through a second check valve; and an accumulator connected between said first and second check valves to pressurize oil delivered to said variable cam timing unit.