Patent ID: 6715456
Filing Date: 2004-04-06
Classification: F01L

Abstract:
A variable valve train for internal combustion engines having at least one cam on a camshaft rotatably mounted in a cylinder head for actuating a valve, whereby the cam acts upon a sliding block element movably guided in a rocker arm component along a slotted rocker arm guide, the sliding block element acts upon a valve actuation element, and the valve actuation element acts upon the valve, a stroke of the valve being variably adjustable by a linear displacement of the rocker arm component, and the sliding block element is pretensioned against the cam by a spring,wherein provided between a cam base circle of the cam and the valve actuation element is an inclined preacceleration plane portion of the slotted rocker arm guide permitting an excitation movement of the sliding block element without actuating the valve actuation element in an area of a free travel and during said excitation movement, the sliding block element is raised above said valve actuation element.