FIELD: measuring.
SUBSTANCE: method for determining the needle lift of a Common Rail nozzle sprayer includes installing the nozzle on a test bench, measuring the fuel flow through the sprayer at a predetermined pressure and different values of the duration of the control pulse supplied by the control unit to the nozzle actuator. The presence of a proportional dependence of the measured parameter on the needle lift of the sprayer in a limited area is assumed, wherein the dependence of the flow through the sprayer on the needle lift is linear in the section from the maximum needle lift to the value of 0.12 to 0.15 of the maximum lift. The current value of the needle lift on the linear section is determined as the product of the maximum lift times the ratio of the durations of the control pulse corresponding to the maximum lift and the lift equal to 0.12 to 0.15 of the maximum lift.
EFFECT: technical result is improved technology of measuring the needle lift.
1 cl, 1 dwg
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