Visual test system capable of meeting measurement requirement under extreme condition
A test system and extreme condition technology, applied in measuring devices, internal combustion engine testing, instruments, etc., can solve problems such as the inability to freely interchange titrators and fuel injectors, and the inability to measure the design of constant volume bombs, so as to improve the accuracy of experiments And the effect of experimental efficiency, simple structure and convenient processing
Active Publication Date: 2018-02-16
JILIN UNIV
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Problems solved by technology
[0005] The purpose of the present invention is to solve the problem that the existing constant volume bomb design scheme cannot cooperate with the titrator of the contact angle measuring instrument to measure the contact angle of droplets and cannot freely interchange the titrator and fuel injector to meet the needs of actual tests
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[0021] Describe the present invention below in conjunction with accompanying drawing.
[0022] Such as figure 1 As shown, the present invention is composed of a constant volume bomb system I, a wetting characteristic testing system II, a pressure boundary measurement and control system III, a fuel titration system IV, a fuel injection system V, and a temperature boundary measurement and control system VI, wherein: the wetting characteristic testing system II The middle contact angle measuring instrument 7 is respectively connected with the computer 8 and the camera 6; the three ports of the tee 12 in the pressure boundary measurement and control system III are respectively connected with the pressure gauge 9, the high-pressure gas cylinder 11 and the pressure regulating valve 13; the fuel titration system IV includes Titrator 14; fuel injector 16, high-pressure fuel rail 17, oil pump 18, and fuel tank 19 in the fuel injection system V are connected in series, and the signals o...
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The invention relates to a visual test system capable of meeting a measurement requirement under an extreme condition, and belongs to the technical field of internal combustion engines. A constant volume bomb system is connected with a pressure boundary measurement and control system through an end cover, is connected with a wetting property measurement system through an end cover I, a visual window and a light path, and is connected with a temperature boundary measurement and control system through a bottom end cover; an upper end cover of the constant volume bomb system not only can be replaced with a titrator end cover in a titrator end cover assembly so as to be connected with a titrator of a fuel titrating system, but also can be replaced with an oil atomizer end cover so as to be connected with an oil atomizer of a fuel injection system. The visual test system provided by the invention is simple in structure of a constant volume bomb, convenient to process, capable of matching with a contact angle measuring instrument for measuring contact angles of liquid drops under the conditions of different dip angles, different temperatures, different pressures and the like between theliquid drops dripped by the tritrator or mist spray injected by the oil atomizer and a sample to be measured, beneficial to effectively improving the experiment accuracy and the experiment efficiency,and capable of solving the problems of high temperature and big sealing difficulty of the constant volume bomb since the constant volume bomb is heated by an electric heating wire in the prior art.
Description
technical field [0001] The invention belongs to the technical field of internal combustion engines, and in particular relates to a visual test system that can meet the measurement needs of extreme conditions. Background technique [0002] Due to the energy crisis, environmental pollution and increasingly stringent emission regulations, modern society has higher requirements for the power, economy and emission performance of internal combustion engines. Therefore, it is necessary to optimize the working process of the existing engine and find a new type of alternative fuel with excellent performance, economical and practical, and a wide range of sources. [0003] To achieve these goals, it is necessary to fundamentally study the changes in the physical and chemical properties of the fuel after it enters the cylinder. At different temperatures and pressures, different fuels have different wetting characteristics when they contact the cylinder wall at different angles. The "w...
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IPC IPC(8): G01N13/00G01M15/04
CPCG01M15/04G01N13/00G01N2013/0208
Inventor 孙万臣张浩郭亮金科年方凯付东祺刘晋科张曙光王乔
Owner JILIN UNIV