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Home >> BMW >> 2009 >> X5 35d >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel System - Overview >> Fuel System >> High Pressure Fuel System >> Piezo Injector Operation >> Notes
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Piezo Injector Operation: Notes

Fig 1: Piezo Injector Operation Diagram
G06896063Courtesy of BMW OF NORTH AMERICA, INC.
INDEX EXPLANATION CHART

Index Explanation
1 Coupler module
2 Control valve
3 Bypass
4 Nozzle needle
5 Restrictor
6 Control volume
7 Outlet
8 Supply duct to nozzle
Fig 2: Piezo Injector Operation Diagram - Injector Opening
G06896064Courtesy of BMW OF NORTH AMERICA, INC.
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