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Test constant volume bomb controllable in turbulent flow intensity and position, and control method

A technology of turbulence intensity and constant volume bomb, which is applied in the field of engineering thermophysics research, can solve problems such as complicated structure and quantitative control, and achieve the effects of reducing interference, ensuring sealing and installation reliability

Active Publication Date: 2016-02-24
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such devices to increase turbulence intensity are mostly limited to qualitative research, and the structure is cumbersome, but most of them do not carry out more accurate quantitative control on turbulence intensity and turbulence occurrence position, and then study the combustion and emission characteristics of internal combustion engines under different intensities and positions of turbulence

Method used

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  • Test constant volume bomb controllable in turbulent flow intensity and position, and control method
  • Test constant volume bomb controllable in turbulent flow intensity and position, and control method
  • Test constant volume bomb controllable in turbulent flow intensity and position, and control method

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Embodiment Construction

[0033] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0034] like Figure 1-2 As shown, a test constant volume bomb with controllable turbulence intensity and position includes a main part of the constant volume bomb and a turbulence generating device, and the lower end of the main part of the constant volume bomb is connected with the turbulence generating device; the turbulence generating device It includes a cylindrical shell, a shroud 11, an axial flow fan 8, a motor 9 for controlling the axial flow fan 8, and a turbulence control device; the bottom end surface of the shell is provided with a number of through holes, and the upper end facing the through hole is provided with An axial flow fan is provided with a motor 9 facing the lower end of the through hole, and the shaft end of the motor 9 is connected with the axial flow fan 8 through the through hole; the upper part of the axial flow f...

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Abstract

The invention discloses a test constant volume bomb controllable in turbulent flow intensity and position, and a control method. The constant volume bomb apparatus comprises a temperature sensor, a pressure sensor, a fuel injector, air inlet and air outlet pipes, turbulent flow generation modules, a PLC control module, etc. The turbulent flow generation modules are nine miniature axial-flow fans that are arranged evenly, and the nine miniature axial-flow fans are connected to the bottom end of the constant volume bomb through bolts. On the basis of human setting, a host computer test system and a PLC are adopted to control the starting scheme and the rotating speed of axial-flow fans, so turbulent flows with required intensity and position are achieved. The test constant volume bomb has a simple structure. Target turbulent flows with required accurate intensity and position can be automatically achieved as long as bolts are utilized to fix turbulent flow generation devices in an initial stage of a test and parameters are adjusted externally. The process of mounting and dismounting the test constant volume bomb is simplified, and the test constant volume bomb plays a significant role in researching the combustion process and the characteristics of fuels in conditions of different turbulent flow intensities and different generation positions.

Description

technical field [0001] The patent of the invention belongs to the field of engineering thermophysics research, and involves research on the precise test environment of the combustion process of an internal combustion engine. The invention relates to a constant volume bomb with controllable turbulent intensity and position, in particular to a turbulent test constant volume bomb with different target intensities and positions generated by an axial flow fan. Background technique [0002] The mixing process of atomization and air of different gaseous and liquid fuels is one of the important factors affecting the performance of internal combustion engine combustion and emission of pollutants. For internal combustion engines, the method of intake valve with air guide screen, tangential air passage and spiral air passage is generally adopted to generate intake vortex, increase turbulence intensity, and improve atomization degree. [0003] The increase of turbulence intensity and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/02
CPCG01M15/02
Inventor 王忠刘帅赵怀北孙波赵洋
Owner JIANGSU UNIV
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