| 摘要 |
PCT No. PCT/DE92/00334 Sec. 371 Date Jan. 5, 1993 Sec. 102(e) Date Jan. 5, 1993 PCT Filed Apr. 25, 1992 PCT Pub. No. WO92/20906 PCT Pub. Date Nov. 26, 1992.The adjustment device for continuously adjusting an angular orientation of a camshaft of an internal combustion engine relative in relation to a drive wheel of the engine, has a servomotor including a rotary piston nonrotatably attached to the camshaft and a plurality of adjusting segments between the rotary piston and the drive wheel equally spaced around the outer peripheral surface of the rotary piston and alternately attached to the rotary piston and the drive wheel so as to form a plurality of volume-adjustable working chambers connectable in pairs in operation; a pump located in the drive wheel and connected with the servomotor to receive an adjustably pressurized medium and to feed the adjustably pressurized medium to the servomotor means; a first control valve device connected to the pump for controlling supply of the adjustably pressurized medium to the pump to activate and deactivated the pump; and a second control valve device connected to the working chambers to select working chamber pairs and to connect the working chambers of the selected working chamber pairs to provide a flow of pressurized medium between those working chambers and thus to adjust the angular orientation of the camshaft relative to the drive element. Advantageously four pair of working chambers are provided including a third and fourth pair arranged diametrically opposed to each other on opposite sides of the rotary piston.
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