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Engine test inlet pressure closed-loop adjustment system and method

A closed-loop adjustment and inlet pressure technology, applied in the direction of electric fluid pressure control, etc., can solve the problems of low precision and large time lag, and achieve the effect of risk dispersion.

Active Publication Date: 2016-01-20
XIAN AEROSPACE PROPULSION TESTING TECHN INST
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of low precision and large time lag in the existing engine pump inlet pressure control mode, the present invention provides a closed-loop adjustment method for engine test inlet pressure

Method used

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  • Engine test inlet pressure closed-loop adjustment system and method
  • Engine test inlet pressure closed-loop adjustment system and method
  • Engine test inlet pressure closed-loop adjustment system and method

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Embodiment Construction

[0038] To realize the closed-loop adjustment of the engine pump inlet pressure, the following problems need to be solved: the real-time control method of the engine pump inlet pressure, the real-time acquisition of the pump inlet pressure measurement data, and the rapid and continuous adjustment of the actuator.

[0039] The principle diagram of the engine test inlet pressure closed-loop adjustment system of the present invention is as follows figure 1 As shown, it includes fuel pressurization system, oxidant pressurization system, fuel container box, oxidant container box, pressure measurement device and closed-loop control device; the fuel container box and oxidant container box are connected to the engine, and the output end of the fuel pressurization system is connected to the The fuel container box is connected, and the output end of the oxidant pressurization system is connected with the oxidant container box; the pressure measurement device includes an interconnected acq...

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Abstract

The invention relates to an engine test inlet pressure closed-loop adjusting system and an engine test inlet pressure closed-loop adjusting method. The system comprises a fuel pressurizing system, an oxidant pressurizing system, a fuel container, an oxidant container, a pressure measuring device and a closed-loop control device. The containers are connected with an engine. An output end of the fuel pressurizing system is connected with the fuel container. An output end of the oxidant pressurizing system is connected with the oxidant container. The pressure measuring device comprises an acquisition device and a data processor. The acquisition device acquires engine inlet pressure and container pressure of the engine entering the containers to transmit to the data processor. An output end of the data processor is connected with an input end of the closed-loop control device. An output end of the closed-loop control device is connected with the pressurizing systems. By the system, the technical problem that the existing engine pump inlet pressure control is low in precision and high in time-lag is solved. Engine pump inlet pressure is controlled by adjusting container pressure, and accordingly quickness, continuation and reliability are achieved.

Description

technical field [0001] The invention relates to an engine test inlet pressure closed-loop adjustment system and method. Background technique [0002] During the engine test, the engine inlet pressure needs to be changed according to the set curve and controlled within a certain bandwidth. If the inlet pressure is lower than the lower limit of the bandwidth, it is easy to cause pump cavitation; if the inlet pressure is higher than the upper limit of the bandwidth, the engine will work under high working conditions. These two situations will have an adverse effect on the normal work of the engine, and even lead to the failure of the test run. If the inlet pressure fluctuates too much, it will have an impact on key parameters such as engine speed, chamber pressure, thrust, flow, etc., which is very unfavorable for correct and objective evaluation of engine performance. [0003] At present, the inlet pressure of the engine pump is controlled in an open-loop mode, and the inlet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D16/20
Inventor 朱丹波薛同乐赵建军南渭林王广飚赵政社左明聪史超
Owner XIAN AEROSPACE PROPULSION TESTING TECHN INST
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