Patent ID: 6412461
Filing Date: 2002-07-02
Classification: F01L

Abstract:
A valve resting mechanism for a cylinder control type engine, the engine comprising:a cylinder head fixed on a cylinder block having a plurality of cylinders; an intake/exhaust valve to open/close an intake/exhaust port formed in said cylinder head; and a cam type valve actuating mechanism disposed over said cylinder head to actuate said intake/exhaust valve to open/close the intake/exhaust port, said cam type valve actuating mechanism comprising: a cam formed on a camshaft rotatable according to a rotation of the engine, and a rocker arm adapted to rock on a rocker arm shaft in accordance with a rotation of said cam, to open/close said intake/exhaust valve, said rocker arm comprising a first rocker arm and a second rocker arm to rock independently of each other on said rocker arm shaft, said first rocker arm to rock in response to the rotation of said cam, said second rocker arm to open/close said intake/exhaust valve, said first and second rocker arms respectively comprising first and second individual engagement portions engaging with a pin slidably moved by an electromagnetic drive device; and a rocking motion being transmitted from said first rocker arm to said second rocker arm in an engaged state in which said pin is engaged by said first and second engagement portions, whereas the rocking motion is not transmitted from said first rocker arm to said second rocker arm in a disengaged state in which said pin is not engaged by the second engagement portion, wherein said electromagnetic drive device comprises: a movable element to slide said pin in an axial direction of said pin; a stator to form an electromagnet; and a clearance between said movable element and said stator to limit a sliding of said movable element in the axial direction, the valve resting mechanism comprising a rocking fulcrum of said rocker arms; said pin and said movable element to slide toward a center of the rocking fulcrums of said rocker arms from sliding faces of said engagement portions.