Fuel Injection Redefined Piezoelectric Injectors Enhance Accuracy

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. Piezo actuators have response times on the order of just a few tenths of a millisecond. The piezo-electric technology was commercialized in common rail ... (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 ... While direct actuator's stroke is generally lower than 100 μm, amplified piezo actuators can reach millimeter strokes. ... piezoelectric fuel injectors ... use in diesel fuel injectors. Sept 2009 – Milestone: Measure and compare piezoelectric and mechanical reliabilities of tape- cast and hot ... Indeed, piezo ceramic injectors operate faster than injectors with electromagnetic actuators. Piezoelectric injectors can respond faster because they apply ... The major advantage of piezoelectric injectors is their speed of operation and the repeatability of the movement of the valve. The dilation and retraction ... Piezoelectric transducers have replaced the electromagnetic actuator ... lower than those found in a diesel engine, the piezoelectric actuators act directly on ... Piezoelectric stack actuators are particularly useful because they can generate large forces, but the displacement is almost linear depending on ... Piezoelectric injectors uses this characteristic to provide fast, precise control of injection timing,while eliminating all other moving parts.