Device for testing thickness of lubricating oil film of internal combustion engine piston ring assembly

Abstract

The invention discloses a device for testing the thickness of a lubricating oil film of an internal combustion engine piston ring assembly, and the device comprises a signal generation module, a testing module, a signal receiving module, and a data processing module. The testing module comprises a shading ring, a quartz plate, an emergent optical fiber outlet end and an incident optical fiber collection end. The testing module is installed in a hole of a piston cylinder sleeve, and is perpendicular to the inner wall of the cylinder sleeve. The quartz plate is installed in the shading ring, andthe quartz plate is attached to the emergent optical fiber outlet end and the incident optical fiber collection end. The signal generation module comprises a laser generator, a focusing lens, and a signal collection end. The signal collection end is connected with the emergent optical fiber outlet end. The signal receiving module comprises an incident optical fiber and a spectrum analyzer. The incident optical fiber is connected with the incident optical fiber collection end, and is connected with the spectrum analyzer. The spectrum analyzer is connected with the data processing module through a data transmission line. The device achieves the measurement of the thickness of the lubricating oil film of the piston ring assembly through the spectrum obtained when laser is reflected by the lubricating oil film of the piston ring assembly, is high in response speed, and is high in sensitivity and measurement precision.

Description

technical field [0001] The invention belongs to the field of power machinery, and in particular relates to a device for testing the lubricating oil film thickness of a piston ring assembly of an internal combustion engine. Background technique [0002] Due to economic and reliability requirements, people pay more and more attention to tribological issues such as internal combustion engine cylinder sealing, power loss, lubricating oil consumption, in-cylinder gas leakage and component wear. Moreover, the increasingly stringent international emission regulations and the interests of users have led to a continuous reduction in the consumption of lubricating oil in the cylinder. All of the above are closely related to the tribological problems of the piston ring-cylinder liner. [0003] In the past few decades, many scholars at home and abroad have conducted a lot of research on the lubrication of piston rings and cylinder liners of internal combustion engines, and have achieve...

AI Technical Summary

Problems solved by technology

However, since the lifetime of fluorescence is related to the intensity of excitation light, it is necessary to be extra cautious in the selection of light intensity and signal post-processing; in addition, it is also affected by temperature to a certain extent, and temperature compensation is difficult; moreover, the conditions of the reflective surface and Factors such as the antioxidant capacity of fluorescent substances also affect the measurement accuracy to a certain extent.

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