Patent ID: 7159553
Filing Date: 2007-01-09
Classification: F01L

Abstract:
1. A valve train for an internal combustion engine, said valve train comprising an elongate anti-rotation bridge acting as a retention device and a mounting aid and comprising receptions for valve lash adjusters arranged spaced behind one another, a valve adjuster configured as a roller tappet being arranged in each reception while being directed through a tappet roller toward a cam of a camshaft, said roller tappet being retained for longitudinal displacement in the reception and secured against rotation through flat key surfaces arranged on an outer peripheral surface of the roller tappet that bear against corresponding corresponding inner surfaces of the anti-rotation bridge, and an opening of the anti-rotation bridge for allowing a passage of a tappet pushrod that is supported on an end of the roller tappet being associated to each reception, wherein a support surface limiting each reception is configured in the anti-rotation bridge for supporting that end of each roller tappet that faces away from the tappet roller and is formed by an outer cylindrical section and a piston part of an axially displaceable inner cylindrical section inserted into the outer cylindrical section, wherein the piston part is supported on two tabs of the anti-rotation bridge that prolong the support surface in a plane of the support-surface.