Igniting Innovation Piezoelectric Injectors' Speed and Accuracy

A second actuator type, using piezoelectric material to provide displacement, can provide faster response than a solenoid actuator. However, a piezoelectric ... The inverse piezo effect lends itself particularly for precise and fast motion generation, while the direct piezo effect can be used for sensor applications. A ... ABSTRACT: Piezoelectric actuators are increasingly used in fuel injectors due to their quick ... electric actuators than with conventional ... The method of testing then is to measure the resistance of the injector at 100v. ... injectors have solenoid actuators and not piezo actuators. (3) Faster Acceleration: Piezo devices can react in a matter of microseconds. Acceleration rates of more than 10,000 g (response times of 0.01 ... Moreover, because of the higher velocity, the piezo injector could cause a better fuel penetration in the combustion chamber and, hence, a better fuel-air ... “Piezoelectric actuators are suited to miniaturisation, they produce no electromagnetic noise and they are highly efficient.” PZT thin films can ... I think they are getting better. We used them maybe 4 years ago. So the new technology may be better. Increased injection pressure. • Less emissions. • Multiple-nozzle injection. • Enhanced injection timing. • 5 times faster than conventional injectors. 7. Frequencies in the kilohertz range are desirable and piezo actuators provide faster response than electromagnetic drives, such as solenoids or voice coils. The ...