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Decoupling element for a fuel-injection device

  • US 10,641,224 B2
  • Filed: 10/19/2015
  • Issued: 05/05/2020
  • Est. Priority Date: 12/16/2014
  • Status: Active Grant
First Claim
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1. A decoupling element designed for arrangement between a housing of a fuel injector and a wall of a receiving bore in which the fuel injector is received for fuel injection into a combustion chamber, the decoupling element comprising:

  • a closed ring, wherein;

    the closed ring is designed to be arranged with;

    a lower end face of the closed ring sitting on a shoulder of the receiving bore; and

    an upper end face of the closed ring being conically or spherically shaped, sloping upward from radially outside toward radially inside, and being in contact with a spherically curved or conical shoulder area of the housing of the fuel injector; and

    at least one of;

    respective transitions of the upper end face and the lower end face toward inner and outer annular lateral areas of the closed ring are rounded;

    at least one guide element radially projects at an outer periphery of the closed ring; and

    the decoupling element further includes at least one of;

    a collar that axially projects from the closed ring and that includes an annular guide element at an outer periphery of the collar; and

    a securing ring that includes a circumferential ring collar from which a plurality of bracing tabs, that are distributed across its periphery, extend.

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