Valve drive for altering gas exchange valve lift in internal combustion engine, includes guide lever secured to spring for biasing intermediate lever against camshaft

摘要

A guide lever (10) can be pivoted relative to the intermediate lever (3) connecting the drive (1) to the valve and it is pivotally mounted on the axle (4) for the roll (5) connected to the intermediate lever and used to actuate lift. The opposite end (11) of the guide lever to the axle has a fixed position. The spring (13) for biasing the intermediate lever against the camshaft used to drive the roll is connected to the two levers. The valve is connected via the intermediate lever to a first roll for actuating lift and this roll is driven by a cam on a camshaft. A work curve for the lever during lift adjustment is defined by a second roll in contact with this lever. The second roll is in contact with an adjustable position adjustment part.