Piezo Injector
A piezo injector uses a piezoelectric crystal stack to open the nozzle very quickly and precisely.
What is Piezo Injector?
It allows several small injections per combustion cycle. It is used in modern diesel and some petrol direct injection engines. It reacts faster than a solenoid injector. Leak-off tests help find faulty injectors. They must be handled with care.
How it works
Applying voltage makes the crystal stack expand, which opens the injector valve within a fraction of a millisecond.
Why it matters for your car
New piezo injectors usually need coding with their correction values. They are sensitive to fuel contamination and incorrect handling.
Other terms
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- Door Hinge
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