Injector head for a fuel injector

By using additive manufacturing technology to form the injector head, the problem of brazed joint failure was solved, enabling a lighter, lower-cost, and more reliable fuel injector design, and simplifying the manufacturing process.

CN122396888APending Publication Date: 2026-07-14SOLAR TURBINES INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOLAR TURBINES INC
Filing Date
2024-11-14
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Failure of brazed joints in existing fuel injectors leads to internal leaks and high maintenance costs, increases manufacturing complexity and weight, is difficult to repair, and affects combustion performance.

Method used

The injector head, including a central fuel assembly and multiple support pins and fins, is formed using additive manufacturing technology, eliminating brazed joints and providing support through additive manufacturing.

Benefits of technology

It reduces the risk of leakage from the injector head, lowers manufacturing time and cost, simplifies design, and improves the performance and reliability of fuel injectors.

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Abstract

A injector head (206) for a fuel injector (200) of an engine (100) includes a injector body (224) configured to couple with a fuel stem (212) of the fuel injector (200). The injector body (224) extends orthogonally relative to the fuel stem (212). The injector body (224) extends axially along a central axis (X1) and extends circumferentially about the central axis (X1). The injector head (206) further includes a center fuel assembly (232). The center fuel assembly (232) includes a tip portion (256) disposed proximate a downstream end (222) of the injector body (224). The tip portion (256) includes an end portion (258), a middle portion (262), a plurality of support pins (266) extending between the end portion (258) and the middle portion (262), and a plurality of fins (272) extending radially outward and along the central axis (X1) from the middle portion (262). The injector head (206) is formed by additive manufacturing. The plurality of support pins (266) and the plurality of fins (272) provide support for forming the injector head (206) by additive manufacturing.
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Citation Information

Patent Citations

  • Methods of fabricating fuel injectors using laser additive deposition

    US9310081B2