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Adjustable pressure control scavenging simulation device and method of use thereof

A simulation device and pressure control technology, which is used in measuring devices, engine testing, and machine/structural component testing.

Active Publication Date: 2019-11-26
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are very few studies on the motion characteristics of oil droplets under a specific structure, and no one mentions the research on the scavenging process, let alone the regulation and control of increasing pressure.

Method used

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  • Adjustable pressure control scavenging simulation device and method of use thereof
  • Adjustable pressure control scavenging simulation device and method of use thereof
  • Adjustable pressure control scavenging simulation device and method of use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Such as figure 1 As shown, the adjustable pressure control scavenging simulation device described in this embodiment can be connected to corresponding external equipment to build a test bench, and a pressure regulating scavenging system, an oil supply system and an information collection system are set up.

[0058] Described device is provided with air inlet 18, scavenging air port 12 and exhaust port 19, and described air inlet 18 and scavenging air port 12 are connected with high-pressure gas bottle by tee pipe fitting 34 and guarantees gas supply, and described air inlet 18 and sweeping The air port 12 is provided with a valve to control the opening and closing. The scavenging port 12 is connected to a flow meter to control the scavenging flow. The exhaust port 19 is connected to a self-operated pre-valve pressure control valve, and the pressure of the device is realized by controlling the pre-valve pressure of the valve. adjustable.

[0059] At the same time, the s...

Embodiment 2

[0073] This embodiment is the method for using the adjustable pressure control scavenging simulation device described in Embodiment 1, which specifically includes the following steps:

[0074] (a) Adjust the limit control plug 15 in the non-return device, push the oil stop ejector rod 14 into the inner block 9 of the scavenging port model, close the oil drain passage 1, store the cylinder oil in the oil storage tank 3, install the piston 1 and The cylinder head 2 is fixed by bolts. Connect the tubing and adjust the optics to prepare for image acquisition.

[0075] (b) Close the valve in front of the scavenging port 12, open the valve in front of the air inlet 18, adjust the pressure in front of the pressure control valve to the experimental conditions, open the high-pressure gas cylinder until the pressure control valve starts to exhaust, at this time, the experimental air has been formed in the cylinder. required high pressure environment.

[0076] (c) Adjust the limit cont...

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Abstract

The invention provides a scavenging simulation device with adjustable pressure control and a using method thereof. The device comprises a cylinder cover and a cylinder body. The top of the cylinder body is closed with a cylinder cover to form a high-pressure container. The cylinder cover is provided with an exhaust port and a piston movement port. One side surface of two adjacent side surfaces ofthe cylinder body is provided with a rectangular oil stop top rod hole, and mounted with a non-return device, and the other side surface is provided with a scavenging model. The scavenging model comprises a scavenge model inner block and a scavenge model outer block. According to the scavenging simulation device with adjustable pressure control and the using method thereof, cylinder oil supply athigh pressure is achieved through an oil supply channel, an oil stop top rod, and a piston arranged on the scavenge model inner block and the non-return device arranged outside the cylinder body, andthe experimental cost is greatly saved compared with a typical dedicated high pressure oil drop supply device.

Description

technical field [0001] The invention relates to the experimental technical field of the scavenging characteristics of a large marine two-stroke engine and the movement characteristics of cylinder oil at the scavenging port, in particular to a scavenging simulation device with adjustable pressure control and a use method thereof. Background technique [0002] With the increasingly stringent emission regulations, higher requirements are put forward for low-speed two-stroke marine main engines. Improving its mean effective pressure and ensuring efficient and stable combustion are the core tasks of current research and development. However, a series of problems such as deflagration caused by spontaneous combustion of cylinder oil have caused great obstacles to the improvement of engine power performance. Therefore, as a prerequisite for studying the control of spontaneous combustion and deflagration of cylinder oil, it is necessary to study the scavenging characteristics of two...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/02
CPCG01M15/02
Inventor 潘敏冯立岩王自鑫刘强于正然孙洪杰闫鹏
Owner DALIAN UNIV OF TECH