FIELD: engine engineering. SUBSTANCE: unit for fuel supply is coupled to a bottom of a drain tank trough a pipe line. The drain tank is coupled to a fuel pump through a supplying branch pipe and to a feed fuel tank through a discharging branch pipe. Face surfaces of both branch pipes are positioned within the drain tank at the vicinity of its bottom. An opening is provided on a section of the discharging branch pipe which is located within the drain tank above the fluid level. EFFECT: enhanced efficiency. 1 dwg
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