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Engine test inlet pressure closed-loop adjusting system and engine test inlet pressure closed-loop adjusting method

A technology of closed-loop adjustment and inlet pressure, which is 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: 2013-08-07
XIAN AEROSPACE PROPULSION TESTING TECHN INST
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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 adjusting system and engine test inlet pressure closed-loop adjusting method
  • Engine test inlet pressure closed-loop adjusting system and engine test inlet pressure closed-loop adjusting method
  • Engine test inlet pressure closed-loop adjusting system and engine test inlet pressure closed-loop adjusting method

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Embodiment Construction

[0038] To achieve 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 quick and continuous adjustment of the actuator.

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

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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 a closed-loop adjustment system and method for engine test inlet pressure. 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 range. 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. Both of these conditions will adversely affect the normal operation of the engine, and even lead to failure of the test run. If the inlet pressure fluctuates too much, it will affect 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 an open-loop control method, and the inlet pressure is main...

Claims

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Application Information

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Patent Type & Authority Applications(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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