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The availability of the necessary equipment, as shown in this manual. RECONDITIONINGIn order to achieve the best result, reducing the working time, it is necessary to take in account the following points: A suitable technical and practical knowledge. The control on the injector is quicker allowing more precision in the fuel injected volume, and a reduction of the smoke emission.
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The maximum expansion of the Siemens actuator is 40 m. The piezo Actuator is therefore formed by 350 quarz sheets, each one 80 m thick, fixed on a pile structure, polarized and connected one by one to its electrical terminal. Only when receiving an electrical signal of opposite polarity the same sheet will return to the original shape.ĪTTENTION: On a piezo injectors the functions of opening and closing are actuated only through the polarity inversion DISCONNECTING AN INJECTOR ON A RUNNING ENGINE, THE INJECTOR MAY REMAIN OPEN, CAUSING BIG DAMAGES TO THE ENGINE.īeing the m 0.13 expansion of a single sheet much too small, it was created a pile of shims, connected each other, forming a monolithic structure. Whenever a piezoceramic sheet receives an electrical signal of the same polarity, as it is in origin, it modifies its thickness expanding 0.13m, and remains in this form also after the electrical signal is ceased. On Siemens Piezo Injectors the actuator is formed by 80 m. On Piezo Injectors the actuators are used as motors and modify their shape under the action of an electrical fields. Piezo Actuators convert electrical power into mechanical power (motors) or, alternatively, mechanical power into electrical power (generators). Difference: Transducers convert a power form into another, for instance: pressure, temperature, etc. PIEZOELECTRICITY The piezoelectricity is the characteristic by which some crystals, quartz, topaz, and others, like crystal ceramic (piezo ceramic), can be electrically loaded through a mechanical deformation, or alternatively can change shape when submitted to an electrical field action. PREVIOUS STATEMENTWe wish to offer some short information on the Piezo actuators characteristics, for better understanding the technical choice of their employment for the Common Rail injectors valve action, instead of the traditional solenoids. Manuale DX.MT0010.03.10 Iniettori Siemens Piezo Ditex Technologies.
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SIEMENS PIEZO INJECTORSMANUAL FOR DESASSEMBLY REPAIRING AND REASSEMBLY