Other Sensors
4.4 NEEDLE LIFT SENSOR
Needle lift sensor
TI0600DNA.02
The nozzle needle lift indicating sensor enables the customer to
measure the movement of the injector nozzle needle in diesel fuel
injectors. This allows a precise determination of the beginning, the
end and the duration of the injection pulse. This specially developed
sensor is installed within the customer’s original R&D injector. The
adaptation is available for small and medium size injectors used in
cars or light duty engines. It is also available for large injectors in
heavy duty or marine engines.
The needle lift sensor uses the eddy current principle to measure the
movement of the nozzle needle. The eddy current principle is based
on the extraction of energy from an oscillating circuit. The change
of the impedance is calculated by the AVL Bridge Amplifier 3010
(incl. Oscillator box 3077) by looking at the change of the amplitude
and phase position of the magnetic field. Moreover one available
data acquisition channel is required.
Your benefits at a glance
• Direct measurement of needle lift
for precise determination of beginning
and duration of injection
• Design of custom tailored solutions
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