Supporting plate jetting combustion device with pulsed ignition source and ignition method

Abstract

The invention belongs to the technical fields of scramjet engine fuel jetting and flame stabilization technologies and combustion organization, and discloses a supporting plate jetting combustion device with a pulsed ignition source and an ignition method. The supporting plate jetting combustion device comprises a supporting plate fixing panel, a supporting plate body is arranged on the supportingplate fixing panel, the tail of the supporting plate body is of a tail edge staggered structure, the tail of the supporting plate body is provided with an array type ignition electrode and multiple fuel jetting holes, and the array type ignition electrode is connected with a high-voltage pulsed power supply. According to the supporting plate jetting combustion device with the pulsed ignition source and the ignition method, continuous ignition of fuel can be achieved, the supporting plate jetting combustion device can serve as a continuous ignition source, the high-voltage pulsed power supplyactively controls discharge, the ignition source produced through induction is continuous and stable and is not prone to being blown out by pulsed air flow, and the flame cohesion and stabilization functions are guaranteed.

Description

technical field [0001] The invention belongs to the field of scramjet fuel injection and flame stabilization technology and combustion organization technology, and in particular relates to a support plate injection combustion device and an ignition method provided with a pulse ignition source. Background technique [0002] The structure of the scramjet engine is simple, and generally consists of key parts such as the intake port, the isolation section, the combustion chamber and the tail nozzle, and the combustion chamber, as the heart of the engine, is the focus of its research. Combustion in the combustion chamber is carried out in a supersonic airflow. Due to the short length of the combustion chamber, the fuel stays in the combustion chamber for a very short time, only on the order of milliseconds. It is difficult to achieve fuel ignition and stable combustion. In order to obtain higher combustion efficiency in a limited-length combustion chamber, fuel injection and enha...

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a support plate injection combustion device and ignition method provided with a pulse ignition source. Under reduced conditions, due to the low energy of the ignition source, it is difficult to achieve ignition, flame stability and the problems of being easily disturbed by air flow. The auxiliary ignition and flame stabilization are performed by setting the pulse ignition source

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