Precision Injection at Warp Speed Piezoelectric Injectors Surpass Electromagnetic Actuators

Both types work well, but piezo injectors offer finer control of the injection cycle, and generally produce less engine noise than their ... The requirements for diesel engine injection systems are constantly increasing: higher pressures, faster switching times and the flexible adaptation of the ... The maximum expansion of the Siemens actuator is 40 µm. The control on the injector is quicker allowing more precision in the fuel injected volume, and a. 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 ... ABSTRACT: Piezoelectric actuators are increasingly used in fuel injectors due to their quick ... electric actuators than with conventional ... ... piezoelectric and electromagnetic injectors. However, before ranges ... The better ones have it in the range of less than 0.1Ω. In ... ... actuators and key working units, and then changing the control settings. 2. Methods 2.1. Test object The tests were carried out on the Siemens VDO ... One type of fuel injector that offers precise metering of fuel is the piezoelectric fuel injector. Piezoelectric fuel injectors employ piezoelectric actuators ... 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 ...