Breakneck Injection Piezoelectric Injectors' Lightning-Fast Performance

And for an electromagnetic injector, there is usually an outlet for fuel backflow from the center of the electromagnet. The photo shows a Bosch piezo injector. (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 ... Piezoelectric injector testing is a far cry from standard port / PFI injector testing. GDI systems have various ways to trigger their injectors and do so at ... The method of testing then is to measure the resistance of the injector at 100v. ... injectors have solenoid actuators and not piezo actuators. vantages with respect to electromagnetic types. In particular, they provide for extremely fast response (e.g. less than. 100µs) and permit proportional ... The ECU then controls various output actuators like fuel injectors. ... • 5 times faster than conventional injectors. 7. Emission Control ... Considering the nonlinearity of a piezoelectric actuator, the complete electro-mechanical-hydraulic model of the piezoelectric injector was established and ... 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 ... The operation of piezoelectric injectors is quite similar to that of solenoid injectors, with the difference that they have a ceramic core. This is ... By eliminating the hydraulic servo mechanism between the actuator and nozzle needle, very fast injector response times are possible. Direct-acting piezoelectric ...