In-cylinder direct injection hydrogen nozzle with a sealing structure

By using the linkage structure of the conical sealing block and the abutment plate, along with the cooperation of the spring, the hydrogen nozzle achieves full sealing and self-cleaning of the inner wall, solving the sealing and cleanliness problems of existing hydrogen nozzles and improving the safety and stability of the injection.

CN122407409APending Publication Date: 2026-07-17CRRC QISHUYAN CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CRRC QISHUYAN CO LTD
Filing Date
2026-05-19
Publication Date
2026-07-17

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    Figure CN122407409A_ABST
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Abstract

本发明涉及氢气喷嘴技术领域，具体的是一种具有密封结构的缸内直喷氢气喷嘴，本发明包括喷头本体，所述喷头本体的底端设有喉管，所述喉管的内部开设有活动仓、锥形流道以及锥形喷口，且活动仓、锥形流道以及锥形喷口依次连通形成氢气通道，所述活动仓的内腔设有抵接板，所述抵接板滑动用于控制喉管的进气端开启或关闭；通过锥形封堵块与锥形喷口的精密贴合配合抵接板、弹簧的联动结构，停喷时可对喉管与锥形喷口实现封闭封堵，有效阻断缸内高温燃气引燃残留氢气引发的回火风险，避免喉管内部部件性能衰减与损坏，有利于提升整体结构使用安全性与使用寿命。
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