Ferroelectric Durability
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United States of America Patent
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Jul 6, 2010
Grant Date -
Jun 18, 2009
app pub date -
Nov 24, 2006
filing date -
Nov 30, 2005
priority date (Note) -
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Abstract
A piezoelectric actuator for use in a fuel injection system of an internal combustion engine, the actuator comprising a stack of ferroelectric layers; an encapsulation for protecting the stack from the ingress of liquid; and oxygenation means for providing oxygen to the ferroelectric layers, the means positioned between the encapsulation and stack. The oxygenation means is preferably impregnated in a fabric which forms a layer between the encapsulation and the stack.
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