Patent ID: 6089196
Filing Date: 2000-07-18
Classification: F01L

Abstract:
A cylinder head assembly having mounted therein a solenoid valve control device for operating a valve of an internal combustion engine, the cylinder head assembly comprising:a lower cylinder head;an upper cylinder head mounted atop the lower cylinder head, wherein the upper cylinder head has a through hole extending therethrough from an upper open end to a lower open end;a valve element extending substantially along an axis, the valve element constituting one of an intake valve and an exhaust valve of the engine;an armature supported within the upper cylinder head, the armature being connected to the valve element for operating the valve element between a valve-open position and a valve-closed position;a first solenoid mounted in the upper open end above the armature so that a line extending through the armature parallel to the axis passes through the first solenoid, the first solenoid generating a valve-closing electromagnetic force to attract the armature into the valve-closed position, wherein the first solenoid includes a flange portion having a diameter larger than a diameter of the through hole; anda second solenoid mounted in the lower open end below the armature so that the line extending through the armature parallel to the axis passes through the second solenoid, the second solenoid generating a valve-opening electromagnetic force to attract the armature into the valve-open position, wherein the second solenoid includes a flange portion at a lower end thereof, the flange portion having a diameter larger than the diameter of the through hole, contact between the flange portions of the first and second solenoids and the upper cylinder head adjacent to the through hole maintaining the first and second solenoids in given positions relative to the armature.