FIELD: engine engineering. SUBSTANCE: device has hydraulic pump with pistons actuated by cam 1 of the valve gear shaft and provided with check valve 11 mounted in make-up pipe line, hydraulic cylinder with piston 6, and pipe line 5 of high pressure connecting the hydraulic pump with the hydraulic cylinder. The piston of hydraulic cylinder has beveled edges and cutting-off openings 4, 7 to permit control of the openings by driving mechanisms. EFFECT: enhanced reliability. 1 dwg
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