Valve drive with valve stroke reversal for gas exchange valves of 4-stroke IC engines has slide grooves extending across each other due to location at small relative distance, to reduce axial space requirement

摘要

The valve drive has a toothed shaft (1) and a cam part (2) for each cylinder (22), and actuator pegs (3) sliding in grooves (12) to move the cam part axially. The slide grooves extend across each other due to their small relative distance, and have a single actuator peg for both directions of movement. The grooves have outer guide walls (16,17), and a central guide web (21) outside the crossing area (18). The toothed shaft is born in shaft bearings (6) between the cylinders. The cams (8,9) of the cam part form cam pairs (10), and the slide grooves are positioned between the pairs.