Patent ID: 6802289
Filing Date: 2004-10-12
Classification: F01L,Y10T

Abstract:
A system for controlling a valve timing in an internal combustion engine, comprising:a housing comprising a main body having a concave space and a cover member mounted to the main body to close the space, the cover member being formed with a through hole; a phase adjusting mechanism accommodated in the housing, the phase adjusting mechanism hydraulically changing a rotation phase of a crankshaft and a camshaft; a supply and discharge rod arranged through the through hole of the cover member, the supply and discharge rod being connected to the phase adjusting mechanism, the supply and discharge rod failing to be rotatable; a seal ring externally engaged with the supply and discharge rod, the seal ring hermetically sealing a clearance between the supply and discharge rod and the phase adjusting mechanism; and a protrusion formed with the cover member, the protrusion having the through hole formed therethrough, the protrusion protruding from an inner periphery of the through hole in an axial direction of the system, the protrusion having inner and outer peripheries extending to increase a diameter of the through hole toward the outside of the housing.