Electromagnetic fuel injector for gaseous fuels with anti-wear stop device
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United States of America Patent
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Oct 16, 2012
Grant Date -
Oct 20, 2011
app pub date -
Apr 19, 2011
filing date -
Apr 23, 2008
priority date (Note) -
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Abstract
Electromagnetic fuel injector for gaseous fuels comprising: an injection nozzle controlled by an injection valve; a movable shutter to regulate the flow of fuel through the injection valve; an electromagnetic actuator, which is suitable to move the shutter between a closed position and an open position of the injection valve and comprises a fixed magnetic pole, a coil suitable to induce a magnetic flux in the magnetic pole, and a movable anchor suitable to be magnetically attracted by the magnetic pole; an absorption element, which is made of an amagnetic elastic material and is arranged between the magnetic pole and the anchor; and a protective element, which is made of a magnetic metal material having high surface hardness and is interposed between the absorption element and the anchor.
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