Fuel Control Revolutionized Piezoelectric Injectors' Superior Speed and Accuracy

The operation of piezoelectric injectors is quite similar to that of solenoid injectors, with the difference that they have a ceramic core. This is ... ... injection rate is simpler than commercial fuel injectors based on electromagnetic actuators. In order to better prove the latter concept, a more engineered ... While direct actuator's stroke is generally lower than 100 μm, amplified piezo actuators can reach millimeter strokes. ... piezoelectric fuel injectors ... Since the piezo actuator is integrated into the injector body, piezo injectors are slim and need less installa- tion space than solenoid injectors. Possible ... a high voltage to open the injector; · The first injection event is called the Pilot Injection, during which time, a small amount of fuel is delivered to better ... Piezoelectric injectors operate faster than their solenoid driven counterparts, which permits more injections per stroke, higher fuel pressures, and ... The piezo actuators respond more precisely and repeatably providing more accurate fuel flow control. The first generation of piezo injectors ... The different parts of the proposed model are then depicted (injector holder, control valve, nozzle and piezoelectric valve) and merged. Finally, a comparison ... It is also assumed that the dynamics of the piezo actuator from the electrical side is much faster than the dynamics from the mechanical side. The method of testing then is to measure the resistance of the injector at 100v. ... injectors have solenoid actuators and not piezo actuators.