Ferroelectric Durability
AssigneeDelphi Technologies Holding S.arl
InventorsChristopher Andrew Goat, Martin Paul Hardy
Life of this patent
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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.
Claims20
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
- an oxygenating agent for supplying oxygen to the ferroelectric layers, the oxygenating agent being positioned between the encapsulation and the stack.
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
- an oxygenating agent for supplying oxygen to the ferroelectric layers, the oxygenating agent positioned next to the stack and underneath the encapsulation.
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
- an oxygenating agent for supplying oxygen to the ferroelectric layers, the oxygenating agent being impregnated in a fabric which forms a layer positioned next to the stack and underneath the encapsulation.
Dependencies are inferred from the claim text.