1)A closed type injector has a nozzle orifice diameter of 0.949mm and the maximum cross sectional…

1)A closed type injector has a nozzle orifice diameter of 0.949mm and the maximum cross sectional area of the passage between theneedle cone and the seat is 1.75 mm2. The dischargecoefficient of the orifice is 0.85 and for the passage is 0.80. Theinjection pressure is 175 bar and the average pressure of chargeduring injection is 25 bar, when the needle cone is fully liftedup. Calculate the volume rate of flow per second of fuel throughthe injector and the velocity of jet at that instant. Density offuel is 850 kg/m3.

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