An aircraft engine combustion chamber and its control method

By employing bluff body flame stabilization technology and multi-point injection nozzle design in the combustion chamber of aero-engines, the problem of unstable combustion has been solved, achieving stable combustion and temperature profile regulation under high-temperature conditions, thereby improving the reliability and efficiency of the combustion chamber.

CN122083372APending Publication Date: 2026-05-26AECC SHENYANG ENGINE RES INST
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
AECC SHENYANG ENGINE RES INST
Filing Date
2026-03-16
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing aero-engine combustors are prone to combustion instability under high-temperature conditions, and it is difficult to guarantee ignition and shutdown performance and overall combustion performance at the design point.

Method used

It adopts blunt body flame stabilization technology and radial parallel blunt body design, combined with multi-point injection nozzles that can control fuel in zones, to form a low-speed stable recirculation zone, and adjusts the combustion chamber outlet temperature profile shape through the zoned fuel control function of the nozzles.

Benefits of technology

It achieves stable combustion in the combustion chamber under high temperature rise environment, takes into account both ignition and flameout performance and overall combustion performance at the design point, and adjusts the shape of the combustion chamber outlet temperature profile.

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Abstract

This application belongs to the field of aero-engine combustor design technology, specifically relating to an aero-engine combustor and its control method. By using radially parallel blunt bodies to achieve the low-speed stable recirculation zone required for combustion organization, it can solve the combustion instability phenomenon that is prone to occur in existing high-temperature combustor technology based on the premixed combustion concept. Combined with a multi-point injection nozzle with zoned fuel control, it can achieve a balance between ignition shutdown performance and overall combustion performance at the design point. At the same time, the zoned fuel control function of the injector can realize the shape of the combustor outlet temperature profile.
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