FUEL SUPPLY SYSTEM OF GAS DIESEL ENGINE WITH FUEL INJECTION Russian patent published in 1999 - IPC

FIELD: supply systems of internal combustion engines. SUBSTANCE: fuel supply system of gas diesel engine with fuel injection has a high-pressure fuel pump with injection valve, high-pressure pipeline, closed-type injector with overneedle and underneedle cavities, diesel fuel source, oil condensed gas source and a device connected to it for pressure control, diesel fuel feeding and supply cut-off lines, oil condensed gas feeding pipeline, as well as a check valve. The underneedle cavity of the injector is connected to the high-pressure fuel pump, and the oil condensed gas source is connected by the oil condensed gas pipeline via the check valve. The oil condensed gas source through the gas supply line is connected to the underneedle cavity of the injector through its overneedle cavity, that is hermetically closed and contains the inlet of the oil condensed gas pipeline and its outlet to the check valve. EFFECT: eliminated leakage and loss of gas, reduced toxicity of ejections and fire-hazard of engine. 2 cl, 4 dwg