FUEL SYSTEM OF INTERNAL COMBUSTION ENGINE Russian patent published in 2003 - IPC

FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: proposed fuel system contains high pressure fuel pump with delivery line, and nozzle. Fuel feed control device includes housing with cylindrical reservoir and channels connecting reservoir with delivery line of fuel pump and with nozzle. Control valve arranged in reservoir is made in form of resilient split ring of ferromagnetic material. Valve drive electromagnet is installed with clearance inside ring. One end of ring is rigidly secured on wall of reservoir, and other end is installed for covering relief channel when electromagnet is energized, and middle part can cover outlet hole of delivery line. Fuel system is provided with space with bypass valve connected with relief channel and it is connected by other channel with overneedle space of sprayer. EFFECT: improved conditions of operation of sprayer needle at increased injection pressures, provision of stability of fuel feed characteristics. 1 dwg