Microminiature intelligent adjustable ignition system and adjusting method
An ignition system and micro-sized technology, applied in jet propulsion devices, gas turbine devices, ramjet engines, etc., can solve problems such as not being suitable for wide-area flight conditions, unable to achieve multiple ignitions of the engine, and consuming large amounts of energy
Active Publication Date: 2021-05-07
BEIJING POWER MACHINERY INST
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Problems solved by technology
Among them, the typical pyrotechnic igniter has the characteristics of good ignition performance and short ignition delay time, but the working time of the pyrotechnic igniter is generally only 0.7s-2.7s and cannot achieve multiple ignitions of the engine
A typical spark plug igniter can achieve multiple ignitions, but the ignition consumes a lot of energy and cannot meet the wide-area ignition requirements of the engine
[0004] It is difficult to solve the problem of reliable ignition performance and multiple ignition of air-breathing ramjet in the existing technology, and it is not suitable for wide-area flight conditions
Method used
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[0032] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0033] The invention provides a miniature intelligent adjustable ignition system, such as figure 1 As shown, including plasma igniter, fuel tank, stop valve, booster and controller.
[0034] The plasma igniter is used to ignite the atomized fuel mixture in the combustion chamber of the ramjet engine and provide a continuous and stable combustion flame; the fuel tank is used to provide stable fuel for the plasma igniter; the shut-off valve is used to prevent the fuel from flowing back in the fuel tank; The pusher is used to adjust the oil pressure in the fuel tank as an actuator to control the fuel flow of the plasma igniter; the controller includes a plasma igniter fuel flow control algorithm and a plasma igniter current control algorithm. Flight conditions such as Mach number, angle of attack, sideslip angle, total incoming pressure, and total incoming t...
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The invention discloses a microminiature intelligent adjustable ignition system and an adjusting method. The microminiature intelligent adjustable ignition system comprises a plasma igniter, an oil storage tank, a stop valve, a booster and a controller, wherein an inlet of the oil storage tank is connected with an oil way of a main ramjet, and an outlet of the oil storage tank is connected with the plasma igniter; the stop valve is arranged at the inlet of the oil storage tank, and in a closed state when an oil pressure in the oil storage tank is larger than an oil pressure of the oil way of the main ramjet; the booster is located in the oil storage tank and used for adjusting the oil pressure in the oil storage tank; and the controller is connected with the booster and the plasma igniter separately, controls the booster according to the fuel flow required by the plasma igniter and adjusts the discharge frequency and current of the plasma igniter to finish multiple times of ignition. The microminiature intelligent adjustable ignition system is high in adjusting precision, and capable of widening the working boundary of lean oil and rich oil of the ramjet, realizing multiple times of ignition and sustainable combustion of the ramjet, and meeting the wide-area ignition requirement of the engine.
Description
technical field [0001] The invention relates to the technical field of air-breathing engine ignition, in particular to a miniature intelligent adjustable ignition system and an adjustment method. Background technique [0002] With the development of aircraft in the direction of large airspace, high speed, and ultra-long range, the strong demand for aerospace shuttle aircraft with faster flying speed and wider working range, supersonic aircraft, and air-breathing ramjet technology for missiles has become increasingly prominent. However, when the ramjet engine is flying in large maneuvers, fuel is poor, it is subject to instantaneous or continuous complex disturbances, or the angle of attack and sideslip angle are not within the working range, engine stall failures are prone to occur. Therefore, it is necessary for the ramjet to have the ability of rapid response, reliable and stable operation, and multiple ignitions in a large airspace. The ignition conditions in the combust...
Claims
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IPC IPC(8): F02K7/10F02C7/266
CPCF02K7/10F02C7/266
Inventor 付蒙王玉清陈静敏蒋妮李立翰殷建锋
Owner BEIJING POWER MACHINERY INST