Beyond Electromagnetic Limits Piezoelectric Injectors' Unmatched Speed

According to Bosch, which introduced piezo injectors to the industry, a piezo actuator acts up to five times faster than a standard injector solenoid and the ... ... injector length. As the piezo actuator is integrated in the housing, the injectors are significantly slimmer than solenoid valve 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 ... Compared to the electromagnetic nozzle, piezo nozzles consume less fuel and have higher efficiency [4]. BOSCH piezo injectors are the most common injectors. Accordingly, a PICMA® stack actuator with a layer thickness of 60 µm has an approx. 70 times higher capacitance than a PICA stack actuator of the same volume ... This chapter is dedicated to modeling, system identification, and control of electromagnetic actuators with the main focus on the actuators used in magnetic ... Piezoelectric actuators are often employed in such applications where they provide fast and accurate control over a long service life: The angle of a mirror or ... Consequently, it features much lower current consumption than that of an electromagnetic buzzer. The current consumption (excluding that of the peripheral ... Such precise control of high-pressure fluid is made possible by using piezoelectric actuators controlling small valves within fuel injectors. ... faster than electromagnetic injectors and allow up to 5 injections per cycle. Diagnosing faulty piezoelectric injectors requires resistance, capacitance ...