Simulation test method of air leakage of piston and simulation test device thereof

A technology of piston air leakage and simulation test, which is applied in the direction of measuring the acceleration and deceleration rate of fluid and using liquid/vacuum for liquid tightness measurement. It can solve the problems of long piston cycle and low efficiency, and achieve outstanding advantages. , high efficiency, shorten the development cycle effect

Inactive Publication Date: 2015-03-11
湖南江滨机器(集团)有限责任公司
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  • Abstract
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Problems solved by technology

[0005] The object of the present invention is to provide a method and device for simulation testing of piston air leakag

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  • Simulation test method of air leakage of piston and simulation test device thereof
  • Simulation test method of air leakage of piston and simulation test device thereof

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Embodiment Construction

[0036] The core of the present invention is to provide a piston air leakage simulation test method and device, which effectively solve the problems of long period and low efficiency in the piston air leakage test process.

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0038] Please refer to figure 1 , figure 1 It is a schematic diagram of the principle of the piston leakage simulation test method provided by a specific embodiment of the present invention; figure 2 It is a flow chart of a simulation te...

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Abstract

The invention discloses a simulation test method of the air leakage of a piston. The simulation test method disclosed by the invention comprises the following steps of: increasing pressure of hydraulic oil; changing the frequency of the hydraulic oil; introducing the hydraulic oil in a cylinder sleeve (1), in which the piston (2) is put, so that the piston (2) moves along the axis of the cylinder sleeve (1); putting the hydraulic oil in the cavity of the piston (2); and the hydraulic oil flowing out from the cavity of the piston (2), and measuring the flow of the hydraulic oil by using a flowmeter (3). By means of the simulation test method of the air leakage of the piston, the problems of being long in period, low in efficiency and the like in the process of testing the air leakage of the piston are effectively solved. The invention further discloses a simulation test device of the air leakage of the piston. The simulation test device disclosed by the invention is lower in cost and higher in efficiency and is beneficial to design optimization of the piston.

Description

technical field [0001] The invention relates to the technical field of pistons, in particular to a method and device for simulating air leakage of a piston. Background technique [0002] The piston is an important part in the engine and is used to withstand the gas pressure. The piston in the engine mainly relies on the matching gap between the piston ring and the piston ring groove to seal the high-pressure gas, so as to achieve the purpose of pushing the crankshaft to do work. Therefore, the engine has very high sealing requirements for the piston and piston ring. The design of the piston ring groove directly affects the blow-by of the engine, and the engine manufacturer regards the detection of the blow-by as one of the factory test conditions of the engine. [0003] At present, the most direct test method is to test the air leakage of the piston through the engine bench test. However, this test method requires that when the piston design is optimized and improved, a ben...

Claims

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Application Information

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IPC IPC(8): G01M3/26
Inventor 余中荣代凌峰党飞鹏
Owner 湖南江滨机器(集团)有限责任公司
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