FIELD: engines and pumps.
SUBSTANCE: device comprising a high-pressure fuel pump 18, a high-pressure hydraulic accumulator 19 with a high-pressure control valve 20, an electronic control unit, injectors 1, is proposed. The device is provided with two individual high-pressure control valves 6 and 7 with piezo drives and displacement boosters. The first individual high-pressure control valve 6 is connected to high-pressure hydraulic accumulator 19 at the inlet and with an annular groove around the nozzle needle at the outlet, and the second individual high-pressure control valve 7 is connected to the annular groove around the nozzle needle at the inlet and low-pressure hydraulic accumulator 22 directly at the outlet or through a throttle. A method for fuel feed control implemented with the help of proposed device is also proposed.
EFFECT: efficiency enhancement.
2 cl, 4 dwg
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