HYDRAULIC SYSTEM Russian patent published in 1996 - IPC

FIELD: mechanical engineering; hydraulic drives of self-propelled vehicles operating at low ambient temperatures. SUBSTANCE: hydraulic system has pump 1 driven by internal combustion engine and made in form of reversible hydraulic machine whose delivery line is coupled, through directing distributor 4, with operating member and drain line. Pump 1 is made for preserving direction of rotation at reverse duty, corresponding to direction of rotation of driving internal combustion engine. Hydraulic accumulator 7 is connected to delivery line 3 of pump 1 in parallel with operating member through additional distributor 8 which communicates, in one of its positions, hydraulic space of hydraulic accumulator 7 with drain line bypassing directing distributor 4. EFFECT: enhanced reliability of operation. 1 cl, 1 dwg