FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: device has set of conical pairs installed in engine cylinder heads on common splined shaft, and lubrication system. Each spool has drain and vertical holes. Conical spool bushing has circular grooves. Cylinder heads has mounting holes. Number of vertical holes in conical spool is equal to number of circular grooves in bushing. EFFECT: improved efficiency of valve timing mechanism. 2 cl, 1 dwg
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