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Compression and expansion device and operation method

A technology of compression-expansion and constant-volume incendiary bombs, which is applied in the field of compression-expansion devices, can solve problems such as cumbersome control process and complex composition, and achieve the effects of low cost, simple structure and convenient maintenance

Inactive Publication Date: 2021-08-03
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention is equipped with a special electromagnetic control circuit. It needs to use a special switch to change the direction of the current to control the movement trend of the piston. It needs to use a sliding rheostat to change the magnitude of the current to change the magnitude of the electromagnetic force to control the movement speed of the piston. It also needs to be equipped with a special The laser ranging sensor is used to measure the position of the piston, the composition is complex, and the control process is cumbersome

Method used

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  • Compression and expansion device and operation method
  • Compression and expansion device and operation method
  • Compression and expansion device and operation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Such as figure 1 As shown, a compression expansion device includes: a single-cylinder engine 1, a visual constant volume incendiary bomb 2, a motor 5 and a belt 6; the single cylinder engine 1 is connected to the motor 5 through the belt 6, and the visual constant volume incendiary bomb 2 is installed on the single cylinder On the engine 1; the visual constant volume incendiary bomb 2 is equipped with a plurality of window adapters 4, and the window adapters 4 are equipped with optical glass 9.

[0045] Such as Figure 1 to Figure 3 As shown, the visual constant volume incendiary bomb 2 also includes: a spark plug, a top end cover 3 and a combustion chamber 11; the spark plug is installed at the window adapter 4, and the top end cover 3 is installed on the top of the visual constant volume incendiary bomb 2, and the visual constant volume incendiary bomb 2 A combustion chamber 11 is arranged inside; a first cavity 14 and a second cavity 15 are arranged inside the singl...

Embodiment 2

[0051] Embodiment 2 is a preferred example of Embodiment 1.

[0052] Example 2

[0053] A compression expansion device, including a single-cylinder engine 1, a visual constant volume combustion bomb 2, a motor 5 surrounding a belt 6; an air passage 10 is opened on the top end cover 3 and a check valve and a cylinder pressure sensor are installed for controlling intake air, Exhaust and pressure monitoring; optical glass 9, spark plugs, etc. are installed through the window adapter 4, and the four window adapters 4 have the same shape and size, forming a visual constant volume incendiary bomb 2. Complete interchangeability between the four sides of the four sides improves compression and expansion The practicability of the device; the window adapter 4 is installed on the visual constant volume incendiary bomb 2, and can be disassembled to facilitate the cleaning of the combustion chamber 11; the motor 5 is arranged beside the single-cylinder engine 1, and the single-cylinder eng...

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Abstract

The invention provides a compression and expansion device and an operation method. The compression and expansion device comprises a single-cylinder engine, a visual constant volume combustion bomb, a motor and a belt, wherein the single-cylinder engine is connected with the motor through the belt, and the visual constant volume combustion bomb is installed on the single-cylinder engine; the visual constant volume combustion bomb is provided with a plurality of window adapters, and the window adapters are provided with optical glass; the combustion chamber is communicated with the second cavity of the single-cylinder engine, and the piston is driven by the motor to quickly move to create different flow field environments in the visual constant volume combustion bomb for studying ignition and combustion processes.

Description

technical field [0001] The invention relates to the field of compression and expansion devices, in particular to a compression and expansion device and an operating method; in particular, to a rapid compression and expansion device and an operating method for visualization research on ignition and combustion processes. Background technique [0002] The ignition and combustion process of the engine has an important impact on the thermal efficiency, emission and other performance of the engine. It is very important to carry out research on the ignition and combustion process of the engine. The rapid compression expansion device is a visual experimental device used to study the internal working process of the engine. It can simulate the flow field of the engine under different working conditions. Based on the fast press, the high-speed camera can be used to observe and study the ignition and combustion process inside the combustion chamber through the optical window. Therefore, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/02
CPCG01M15/02
Inventor 李铁王欣然黄帅
Owner SHANGHAI JIAO TONG UNIV
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