Hydraulic control device for arrangement for setting internal combustion engine camshaft angular position has dual action cylinder chambers continuously supplied with pressurized medium

摘要

The device has a pump (9) that delivers a pressurized medium to a dual action cylinder (1) from a tank (10) and an electromagnetically actuated valve arrangement (12A,12B) that controls the movement of the dual action cylinder's control piston. The cylinder chambers (3A,3B) are continuously supplied with pressurized medium via non-return valves (7A,7B). The valve arrangement is arranged between the chambers and the tank and determines the size of the cross-sectional areas of the connections between the chambers and tank.