| 摘要 |
PCT No. PCT/DE92/00748 Sec. 371 Date Jun. 7, 1993 Sec. 102(e) Date Jun. 7, 1993 PCT Filed Sep. 4, 1992 PCT Pub. No. WO93/08379 PCT Pub. Date Apr. 29, 1993.A hydraulic control device for the rotation of the camshaft of an internal combustion engine has a sprocket wheel which is driven by the internal combustion engine and connected with the camshaft via a couple member, a spiral toothing and a straight toothing, so that a relative rotation of the drive wheel and camshaft is effected by displacement of the couple member. The couple member is displaced via a hydraulic piston which is acted upon by a radial piston pump arranged in the control device, sucking pressure medium out of a pressure medium reservoir arranged in the engine, and feeding it to the pressure spaces at the piston via outlet valves. A pressure control valve which can be acted upon electromagnetically is connected to one of the pressure spaces and can be opened by corresponding actuation of the electromagnet so that the pressure space at the piston is relieved.
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