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A measurement system and method for spray microscopic characteristics of a constant volume combustion device

A technology of constant volume combustion and measurement system, used in measurement devices, instruments, particle and sedimentation analysis, etc., can solve the problems of advanced optical measurement instrument coordination, research, hindering the depth of fuel crushing and atomization, etc., to improve the accuracy of data collection and the Experimental effect, the effect of real-time measurement

Inactive Publication Date: 2018-12-04
TIANJIN UNIV
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Problems solved by technology

[0004] Some existing spray characteristic measurement systems and methods can only measure the macroscopic or microscopic characteristics of the spray in an open space, or can only measure the macroscopic shape of the spray in a constant volume combustion device, and cannot cooperate with advanced optical measuring instruments. Microscopic characteristics (including particle size distribution information and velocity distribution information of spray particles), such systems and methods obviously cannot meet the requirements of the test
This limitation severely hinders the study of the broken atomization depth of fuel

Method used

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  • A measurement system and method for spray microscopic characteristics of a constant volume combustion device
  • A measurement system and method for spray microscopic characteristics of a constant volume combustion device
  • A measurement system and method for spray microscopic characteristics of a constant volume combustion device

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] Such as figure 1 and figure 2 As shown, a measurement system for spray microscopic characteristics of a constant volume combustion device includes a constant volume combustion device 1, a fuel supply system 2 with a controller 3, a digital delay generator 4 and a phase Doppler particle analyzer 5 ( PDA), the phase Doppler particle analyzer 5 (PDA) has a transmitting probe 6 and a receiving probe 7, and the constant volume combustion device 1 includes a combustion bomb installed inside the box, between the box and the combustion bomb The space is filled with asbestos for heat preservation. The incendiary bomb body is provided with four observation holes in the shape of through holes. The axes of the observation holes are all on the same horizontal plane, and the angle between the axes of the two observation holes is 180°. , the angle between the axes of the ot...

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Abstract

The invention discloses a system and a method for measuring spray micro-characteristics in a constant-volume combustion device. The system comprises the constant-volume combustion device, a fuel supply system, a digital delay generator and a phase Doppler particle analyzer, wherein the fuel supply system is provided with a controller; the constant-volume combustion device comprises a box and an incendiary bomb body, the incendiary bomb body is provided with four observation holes in through hole shapes, axes of the observation holes are located in the same horizontal plane, an angle between the axes of two observation holes is 180 degrees, an angle between the axes of the other two observation holes is 160 degrees, optical observation windows are mounted at the observation holes, and a connection hole communicated with the fuel supply system is arranged right in the upper part of the middle of the constant-volume combustion device; the controller is connected with the digital delay generator; an output end of the digital delay generator is connected with the phase Doppler particle analyzer. With adoption of the measurement method using the measurement system, the spray micro-characteristics can be measured in the constant-volume combustion device.

Description

technical field [0001] The invention relates to the field of constant-volume combustion devices, and more specifically relates to a measurement system and method for spray microscopic characteristics of constant-volume combustion devices. Background technique [0002] In the field of internal combustion engines, the atomization process of fuel directly affects the combustion and emission performance, thereby contributing to the alleviation of energy and environmental problems. Therefore, for internal combustion engine researchers, it is necessary to obtain fuel spray characteristics (jet breakage length, spray cone angle, oil droplet size and velocity, etc.) and its relationship with surrounding environmental parameters (pressure, temperature, ambient gas type and density, etc.) , and then establish the kinetic mechanism of fuel atomization reaction, and finally provide basic data for engine spray simulation and optimization, which is the main purpose of fuel injection atomi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/02G01N15/00
CPCG01N15/00G01N15/0205G01N2015/0003
Inventor 王玉龙杜青白富强杨贤陈世兴杨子明
Owner TIANJIN UNIV
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