Liquid fuel spraying area discrimination and transient evaporation capacity calculation method based on ballistic light imaging
A technology of liquid fuel and calculation method, applied in calculation, material analysis by optical means, analysis of materials, etc., can solve the problem of inability to obtain effective information of spray liquid nuclei
Pending Publication Date: 2022-03-11
JIANGSU UNIV
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Therefore, conventional optical measurement methods cannot obtain effective information on the liquid nucleus of the spray.
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[0045] In order to make the objects, technical solutions and advantages of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and examples.
[0046] The discriminant method and the calculation method of the present invention are based on the ballistic light imaging device. The ballistic light imaging is to image the photon photon using the photovoltaic effect; the ballistic photon is a photon without scattering and maintaining the original propagation direction, including liquid Information of the core; a clear image of the spray;
[0047] Such as figure 1 The ballistic light imaging device mainly includes femtosecond laser, frequency amplifier, beam splitter, multiplier, band pass filter 1, band pass filter 2, fixed, lens 1, lens 2, polarizer 1, polarizer 2, two-color mirror, portrait medium, high speed camera
[0048] The fixed capacity increases the stable flow of high pressure air by an external air compre...
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The invention provides a liquid fuel spraying area judgment and transient evaporation capacity calculation method based on ballistic light imaging, and relates to the field of internal combustion engine spraying measurement and calculation. The liquid fuel spraying area distinguishing method mainly comprises the steps that a liquid column area and a liquid drop area are divided; the method for calculating the transient evaporation capacity of the liquid fuel mainly comprises the steps of liquid phase mass calculation of a liquid column area, liquid phase mass calculation of a liquid drop area and total oil injection quantity calculation, and finally the transient evaporation capacity in the liquid fuel spraying process is obtained. Compared with the prior art, temperature and pressure sensors do not need to be arranged, the liquid drop speed does not need to be obtained, and besides conventional parameters such as the spray cone angle and the penetration distance can be obtained, the states of a spray liquid column and a liquid drop area and the instantaneous evaporation capacity of spray can be easily, conveniently and accurately obtained.
Description
Technical field [0001] The present invention relates to the field of measurement techniques of transient evaporation process during fuel spraying, and in particular, a discriminant calculation method involving determining a liquid fuel transient spray process by ballistic light imaging. Background technique [0002] my country's motor vehicle mainly relying on internal combustion engine, consumed a large number of fossil fuels, and China's petroleum exterior in 2019 rose to 70%. Diesel engine emissions a large number of NO x Emissions such as particles, have great harm to the environment and human health. These pollutants can be controlled by improving spray combustion, thereby contributing to alleviating energy crises and environmental issues. The combustion of different components fuel is also different, so it is necessary to conduct research on the spraying process of the fuel, and the calculation of the instantaneous evaporation amount of fuel spray helps to evaluate the form...
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IPC IPC(8): G06T7/62G06T7/12G06T5/00G01N21/85
CPCG06T7/62G06T7/12G01N21/85G06T2207/10024G01N2021/8592G06T5/70
Inventor 唐纯逸李瑞娜刘帅王忠
Owner JIANGSU UNIV