PUMP-JET Russian patent published in 2009 - IPC F02M47/00 F02M51/00 

FIELD: engines and pumps.

SUBSTANCE: invention relates to engine production. Proposed device comprises housing, control and pressure chambers arranged coaxially therein to accommodate pressure booster with piston and plunger, fuel feed line with cut-off valve communicated with accumulator hydraulic line, drain line, electromagnetic valve, and sprayer with needle with needle chamber communicated, via connecting channel, with pressure chamber. In compliance with this invention, pump-jet comprises additional fuel flow distributor representing three intermediate spacers with channels arranged ahead of pressure booster. Medium space accommodates booster of sprayer needle hydraulic locking. Upper spacer houses spring-loaded filler valve, while lower spacer accommodates sprayer above-needle chamber making sub piston chamber of hydraulic locking booster.

EFFECT: higher efficiency of fuel feed.

4 cl, 2 dwg