Engine test bench and test method thereof

Abstract

The invention discloses an engine test bench. The test bench includes a gas intake system, an engine thrust force measurement bench scale, an exhaust pipeline, a tail gas treatment system and a simulation cabin. The engine thrust force measurement bench scale is fixedly installed in the simulation cabin. A tested engine is installed on the engine thrust force measurement bench scale. The gas intake system is in communication with the tested engine. One end of the exhaust pipeline passes through a shell body surface of the simulation cabin and is fixedly installed inside the simulation cabin, and the other end is in fixed communication with the tail gas treatment system. According to the engine test bench of the invention, regulation speed of the gas intake system thereof is high, adjustment time of gas intake simulation is saved, test cost is reduced, and energy waste is avoided; at the same time, the engine thrust force measurement bench scale thereof realizes measurement of engine thrust force, and a structure is simple; in addition, tail gas treatment of the engine test bench is realized, and gas discharged from a gas outlet of an alkaline spraying tower is enabled to meet national pollutant emission standards; and through arranging a muffling tower, muffling and noise reducing are carried out on exhaust of an exhaust system, and noise pollution is avoided.

Description

technical field [0001] The invention relates to the technical field of engine testing, in particular to an engine test bench and a testing method thereof. Background technique [0002] Engine testing and testing technology is an important part of solid propulsion technology. Before the flight test of an aero-engine, a simulation test must be done on the ground. During the engine test, a set of intake parameters are required, including total intake pressure, intake air flow, The intake air oxygen content, total intake air temperature, and engine fuel supply are called intake state points. After reaching the set value and stabilizing at the same time, record its performance and parameters or evaluate its performance. With the maturity of the engine, the application of the engine is becoming more and more extensive. On this basis, when it is used for the engine of the aircraft, especially the unmanned aerial vehicle, and the ground test of the engine, the engine intake system n...

AI Technical Summary

Problems solved by technology

[0006] For the noise reduction method for the noise generated by the test bench, there is no very mature and effective technical means in the prior art. The applicant first applied for CN203910262U, and proposed a muffler, which has a certain effect on the noise reduction and noise reduction of the test bench. , but the staggered arrangement of the muffler's thick-plate components and thin-plate components requires a large footprint. Sheet components and sheet components (each layer of sound absorbing sheet components requires at least 2 thick sheet components of the muffler and 2 thin sheet components of the muffler plus half a thick sheet assembly of the muffler and a half sheet assembly of the muffler), resulting in a significant increase in cost; another On the one hand, when the floor area of ​​the engine test bench that allows the installation of sound-absorbing equipment is small and does not allow the staggered arrangement of thick-sheet components and thin-sheet components of the muffler described in this patent application, removing any piece of sound-absorbing sheet will result in a loss of sound-absorbing capability. Decline

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