Patent ID: 8316889
Filing Date: 2012-11-27
Classification: F01L,Y10T

Abstract:
1. Control valve for a device for the variable setting of control times of gas exchange valves of an internal combustion engine comprising: a) a valve housing with a recess oriented in a direction of a longitudinal axis, b) a control piston arranged so that it can move in the recess of the valve housing into different operating positions and c) at least one radial recess formed on at least one of the valve housing or the control piston, wherein, in selected operating positions, the radial recess forms a pressurized medium connection with an opening of the valve housing opening into the recess and d) a closing body which forms a check valve in connection with the opening wherein, in a closed position of the check valve, the closing body closes the opening, and in an open position of the check valve, the closing body releases the opening, e) the closing body has at least one guide element and also a blocking body and, for movement of the closing body between the open and the closed positions, the guide element and the blocking body are moved in common, wherein the closing body slides in a direction of the guide element between the open and closed positions in a direction substantially perpendicular to the longitudinal axis, and f) a spring element is provided that loads the closing body in a radial direction and also in a direction of the closed position.