Liquid injector assembly with a flanged connector connection
AssigneeFord Global Technologies, LLC
InventorsDwayne Pollitt, Furqan Zafar Shaikh, Scott Donald Cooper, Michael Levin, John Paul Bogema, Bret Alan Zimmerman, Gary Scott Nichols
Life of this patent
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Abstract
A system for injecting from an injector into a duct of an engine system is provided. The system may include a first flange on a duct connection side, a second flange on an injector connection side, a stand-off separating the first flange from the second flange to form an air gap therebetween, and a seal offset from at least one of the first and the second flanges and located within the airgap and between the first flange and the second flange.
Claims13
A system for injecting liquid from an injector into a duct of an engine system, comprising:
- a first flange on an injector connection side;
- a second flange on a duct connection side, where the duct is an exhaust passage;
- a pair of stand-offs separating the first flange from the second flange to form an air gap therebetween;
- a seal offset from both the first and second flanges and located within the air gap and between the first flange and the second flange;
- an SCR catalyst coupled downstream of the injector;
- a fastening structure configured to fasten the first flange and second flange in cooperation with the stand-offs, wherein the fastening structure includes bolts positioned within and through the stand-offs.
An injector module comprising:
- a first flange configured to be mounted to a second flange coupled to a duct of an engine system via a flanged connection portion, the flanged connection portion comprising:
- the first flange on an injector connection side;
- the second flange on a duct connection side;
- a pair of stand-offs separating the first flange from the second flange to form an air gap therebetween;
- a seal offset from at least one of the first and second flanges and located within the air gap and between the first flange and the second flange;
- a fastening structure including bolts, wherein the first flange is configured to be fastened to the second flange via the fastening structure;
- wherein the bolts are positioned within and through the stand-offs.
An injector assembly for injecting liquid into a high temperature air duct, comprising:
- a flanged connection portion for mounting an injector module to an exhaust duct housing mounted on a high temperature air duct, the flanged connection portion comprising:
- an injector module flange coupled to the injector module;
- an exhaust duct housing flange coupled to the exhaust duct housing;
- a fastening structure including a pair of bolt-and-nut pairs configured to fasten the injector module to the exhaust duct housing, where bolts of the bolt-and-nut pairs form an integral part of the exhaust duct housing flange and where the injector module flange includes a pair of holes for accommodating the bolts;
- a first and second stand-off forming circular sleeves around each bolt of the pair of bolt-and-nut pairs, wherein the circular sleeves form integral parts of the exhaust duct housing flange;
- a raised sealing surface formed by one or more sealing rings, wherein the raised sealing surface is offset from the injector module flange and/or the exhaust duct housing flange;
- and
- a poka-yoke feature for preventing misalignment of the injector module and the exhaust duct housing during assembly;
- wherein the stand-off and/or the raised sealing surface are configured to create an air gap between the injector module flange and the exhaust duct housing flange.
Dependencies are inferred from the claim text.