A device for simulating particle movement in engine cylinder
A technology for engine cylinders and inner particles, which is applied in the testing of engines, measuring devices, and testing of machine/structural components, etc. It can solve the problems of difficulty in researching moving particles and difficult particle observation and research.
Active Publication Date: 2018-04-03
JIANGSU UNIV
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Problems solved by technology
In the current research, it is difficult to observe and study the particles in motion, and the research on moving particles has always been a difficult problem in the industry
Method used
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Embodiment Construction
[0021] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0022] Such as figure 1 and figure 2 As shown, a device and method for simulating particle movement in an engine cylinder includes an axial vortex vane 10, an adjustable speed motor 8, a filter screen 11, a simulated piston 4, a simulated piston adjustment rod 5, a height adjustment nut 6 and an image An acquisition system, wherein the image acquisition system includes a top CCD high-speed photographic camera 12-1, a side CCD high-speed photographic camera 12-2, an image collector 12-3 and an adjustment bracket 12-4. The lower end of the simulation cylinder 3 is fixed on the bracket 13 by bolts, the upper end is connected with the upper cover plate 9 by bolts, the adjustable speed motor 8 is fixed in the middle of the circular upper cover plate 9, and the adjustable speed motor 8 drives the axial eddy current through the connecting shaft 1...
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The invention discloses a device for simulating particle movement in an engine cylinder, which comprises axial vortex blades, an adjustable speed motor, a filter screen, a simulated piston, a height adjustment rod, a height adjustment nut and an image acquisition system. The speed-adjustable motor is fixed on the upper cover plate through fixing bolts, and the power is transmitted to the axial vortex blades through the coupling shaft, and axial vortex is generated in the simulated cylinder made of transparent material, and the upper part of the simulated cylinder is connected with the upper The cover plate is connected, and the lower part is connected with the bracket through bolts, and the position of the simulated piston is changed by adjusting the height adjustment nut. The invention can approximate the movement law of the particles in the cylinder in the air flow, simulate the movement state of individual particles and particles in different working strokes of the engine, reveal the law of particle growth, provide a reference for suppressing the generation of particles, and achieve the purpose of reducing particle emissions.
Description
technical field [0001] The invention relates to a device for simulating particle movement in an engine cylinder, belonging to the technical field of engine testing. Background technique [0002] The particulate matter emitted by diesel engines is one of the main causes of smog. The particulate matter emitted is produced inside the engine cylinder. The automobile emission standards have been implemented more and more strictly. In order to meet more stringent standards, it is necessary to study the growth and movement path of particles in the engine cylinder, and to study the formation mechanism of particles. [0003] The particle size is on the order of nanometers, and the static particles can be analyzed and studied by effective means such as electron microscope and scanning microscope. In the current research, it is difficult to observe and study the particles in motion, and the research on moving particles has always been a difficult problem in the industry. [0004] Acc...
Claims
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IPC IPC(8): G01M15/00G01N15/00
Inventor王忠赵洋孙波刘帅杨芳玲李晓晓
OwnerJIANGSU UNIV