Test device and test method for distribution state of cylinder liner and piston lubricating oil film
A technology of lubricating oil film and distribution state, which is applied in the field of testing devices for the distribution state of lubricating oil film of cylinder liner and piston, and can solve problems such as being in the theoretical research stage and high transient state.
Active Publication Date: 2020-12-15
DALIAN MARITIME UNIVERSITY +1
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Problems solved by technology
This method has the advantages of non-intervention, high transient performance, and quantitative measurement, but this method is still in the theoretical research stage
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[0041] Such as figure 1 and figure 2 The online test device for the distribution state of the lubricating oil film of the cylinder liner and piston assembly includes: a base, a power unit for providing reciprocating motion, a piston pin 1, a piston 2, a first air ring 3, and a second air ring. Ring 4, oil wiper ring 5, quartz cylinder liner 6, cylinder block 7, flange 8, oil pan 9, optical measuring unit for measuring fluorescence intensity of oil film of cylinder liner piston ring, heating unit for increasing lubricating oil temperature , a lubricating unit for supplying lubricating oil to the cylinder liner piston ring and a rotation unit for controlling the angle of the cylinder liner;
[0042] The first air ring 3, the second air ring 4 and the oil scraper ring 5 are set in the ring groove preset from front to back at the front end of the piston 2. Dynamic sealing connection with quartz cylinder liner 6;
[0043] The quartz cylinder liner 6 is fixed on the cylinder bod...
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The invention discloses an online test device of distribution states of lubricating oil films of a cylinder sleeve and a piston assembly. The online test device comprises a base, a power unit used for providing reciprocating motion, a piston, a first gaseous ring, a second gaseous ring, an oil scraping ring, a quartz cylinder sleeve, a cylinder body, an optical measurement unit, a heating unit, a lubricating unit and a rotation unit. The optical measurement unit is used for measuring the fluorescence intensity of an oil film of a piston ring of the cylinder sleeve. The heating unit is used for increasing temperature of the lubricating oil. The lubricating unit is used for providing the lubricating oil for the piston ring of the cylinder sleeve. The rotation unit is used for controlling the angle of the cylinder sleeve. The cylinder body is fixed to a rotation face of the rotation unit. The quartz cylinder sleeve is fixed on the cylinder body. The piston is embedded in the quartz cylinder sleeve through the first gaseous ring, the second gaseous ring and the oil scraping ring, thereby achieving dynamic seal. A connection rod of the power unit is hinged to the piston, thereby achieving reciprocating driving. The optical measurement unit motivates the fluorescence dye through laser. A high speed camera acquires the fluorescence intensity of the fluorescence dye. By recording the by the fluorescence intensity and the value of the by the fluorescence concentration, the distribution of lubricating oil films in different positions of the cylinder sleeve can be determined.
Description
technical field [0001] The invention relates to the technical field of friction and wear testing, and relates to a testing device and a testing method for the distribution state of a cylinder liner and a piston lubricating oil film. Background technique [0002] Opposed-piston and opposed-cylinder engines have attracted extensive attention due to their advantages such as simple structure, high specific power density, self-balancing performance and better emission performance. [0003] However, the complexity of the lubrication state of the cylinder liner-piston ring friction pair of the OPOC engine leads to high oil consumption and prominent problems of cylinder scuffing. Compared with the traditional engine, on the one hand, the layout of the piston ring has changed greatly, the distance between the oil ring and the first gas ring has increased significantly, and there is a piston pin hole in the middle, plus the cylinder liner inlet / exhaust hole interference, the lubricat...
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IPC IPC(8): G01B11/06
CPCG01B11/0658
Inventor 徐久军韩晓光杜凤鸣袁晓帅陈文滨郝勇刚陈泽忠
Owner DALIAN MARITIME UNIVERSITY