Vibration damping insulator for fuel injection valve
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United States of America Patent
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-
Mar 17, 2015
Grant Date -
Jul 4, 2013
app pub date -
Jul 30, 2010
filing date -
Jul 30, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A fuel injection valve is mounted in a cylinder head by being inserted in an insertion hole provided in the cylinder head. A shoulder section is provided at the inlet portion of the insertion hole to be expanded in an annular shape. The fuel injection valve is provided with a stepped section expanded in diameter in a tapered manner to have a tapered surface facing the shoulder section. A vibration insulator is disposed between the stepped section and the shoulder section. The vibration insulator is provided with a circular annular tolerance ring making contact with the tapered surface of the fuel injection valve. A circular annular sleeve section coaxial with the tolerance ring is integrally formed on the tolerance ring to extend from the surface of a portion of the tolerance ring, the portion not facing the tapered surface of the fuel injection valve.
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