FIELD: mechanical engineering; fuel equipment of engines. SUBSTANCE: pump unit functions as water, oil, fuel priming, and high-pressure fuel injection pump at a time. All pumps are placed in single housing built up of cylindrical parts 1,2,3 separated by partitions 4 and 5 and provided with pump head 6, pump drive flange 7 mounting on its butt end water-cooled vortex pump case 8 whose rotor is kinematically coupled with drive shaft 9 installed in case. Under all normal and abnormal operating conditions, water and oil mixing is made impossible. EFFECT: enlarged functional capabilities. 3 cl, 4 dwg
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