Woven Mesh Debris Shield for Fuel Injector
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United States of America Patent
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Apr 26, 2017
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Nov 20, 2013
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Abstract
A debris shield in the high pressure fuel supply passage of a fuel injector, upstream of a bypass branch line leading to a control valve, comprising a rigid tube with a central passage aligned with the fuel supply passage and narrow flow paths through which high pressure fuel is filtered for removal of debris before delivery to the branch line, wherein the tube has opposed ends that are sealingly compressed between spaced apart stop surfaces along the fuel supply passage. The flow paths can be can be bores, slots, or circuitous transverse flow paths formed by woven or ribbon wrapped mesh.
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