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Pulse detonation engine (PDE) magnetic valve high frequency oil supply and ignition system

A pulse detonation and ignition system technology, applied in the field of aerospace power propulsion systems, can solve the problems that the solenoid valve cannot meet the high-frequency work requirements of PDE, the delay time of solenoid valve opening and closing is long, and the solenoid valve oil supply time is short. , to improve fuel atomization, evaporation and blending performance, shorten DDT distance and time, and avoid adaptive control of fuel supply

Inactive Publication Date: 2010-09-08
PEKING UNIV
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Problems solved by technology

Solenoid valve fuel supply can be switched on and off according to a fixed sequence, because the delay time of solenoid valve opening and closing is relatively long, so the actual fuel supply time in a working cycle cannot be carried out according to the ideal fuel filling time, that is, the solenoid valve The actual oil flow time is short, and most of the time is occupied by the opening and closing delay time of the solenoid valve, so the use of a single solenoid valve cannot meet the high-frequency work needs of PDE

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  • Pulse detonation engine (PDE) magnetic valve high frequency oil supply and ignition system
  • Pulse detonation engine (PDE) magnetic valve high frequency oil supply and ignition system
  • Pulse detonation engine (PDE) magnetic valve high frequency oil supply and ignition system

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Embodiment Construction

[0023] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] In order to develop a PDE that uses a solenoid valve to control oil supply, it is necessary to further improve the frequency response characteristics of the solenoid valve and shorten the delay time of the solenoid valve opening and closing, but there are certain technical limits that have not been resolved. If we change our thinking to study the problem of high-frequency intermittent oil supply controlled by PDE solenoid valve, the problem becomes simple. The key to the solution is to place part of the delay time for the opening and closing of the solenoid valve outside of one working cycle of the PDE, so that the normal fuel filling time of one working cycle can be guaranteed, and the switching frequency of the solenoid va...

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Abstract

The invention discloses a pulse detonation engine (PDE) magnetic valve high frequency oil supply and ignition system, comprising a controller, an oil pump, a plurality of magnetic valve branches connected in parallel, a pulse detonation engine (PDE), a nozzle and a spark plug arranged at the head part of the PDE, an ignition power supply connected with the spark plug via a wire, wherein the controller is respectively connected with the oil pump, the multiple magnetic valve branches connected in parallel and the ignition power supply via wires; and the upstream of the multiple magnetic valve branches connected in parallel is connected with the oil pump through an oil pipe, and the downstream thereof is connected with the nozzle via an oil pipe. The invention can enhance oil supply and ignition frequency, control intermittent supply of fuel oil actively, improve fuel oil atomization evaporation and mixing properties, shorten DDT distance and time, reduce oil consumption, increase thrust-weight ratio, and is adaptable to urgent development demands of the PDE.

Description

technical field [0001] The invention relates to the field of aerospace power propulsion systems, in particular to a high-frequency fuel supply ignition system for pulse detonation engine solenoid valves. Background technique [0002] Pulse Detonation Engine (PDE) is a new type of power device in the future aerospace field, which has advantages that modern aerospace power devices cannot match. It is composed of air inlet, valve, detonation tube, tail nozzle, ignition system and control system. Compared with conventional gas turbines or ramjet engines, it has the advantages of high cycle efficiency, wide applicable flight Mach number (Ma=0~5), simple structure, low cost, high specific thrust and specific impulse, low fuel consumption, and good maneuverability. Advantages, can be used for missiles, target drones, unmanned fighter jets, etc. [0003] The research on PDE has gone through half a century. Many countries have formulated detailed research and development plans and ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K9/44F02K9/58
Inventor 郑殿峰
Owner PEKING UNIV
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