Simulation test platform for measuring thickness of oil film between cylinder sleeve and piston of diesel engine based on Gamma rays

Abstract

The invention provides a simulation test platform for measuring thickness of an oil film between a cylinder sleeve and a piston of a diesel engine based on Gamma rays. The simulation test platform comprises a diesel engine cylinder sleeve-piston reciprocating motion simulating bench which is fixed on the test platform, a data acquisition device and a data processing device, wherein the diesel engine cylinder sleeve-piston reciprocating motion simulating bench comprises a diesel engine cylinder body, a cylinder sleeve matched with the cylinder body, a piston positioned in the cylinder sleeve and a bench power unit; the data acquisition device comprises an oil film thickness detection device; a collimation Gamma radioactive source device emits collimation Gamma rays, the emitted Gamma rays penetrate through the outer side of the piston skirt, the oil film and the cylinder sleeve, and are received by a probe, which is used for indicating the thickness of the oil film. According to the simulation test platform for measuring thickness of the oil film between the cylinder sleeve and the piston of the diesel engine based on Gamma rays, the cylinder sleeve does not need to be punched, and the collimation Gamma radioactive source device is embedded in the inner side of the piston skirt, so that the influence on the cylinder sleeve-piston is less, and in addition, as the Gamma rays are stable and immune to electromagnetic interference, the thickness of the oil film between the cylinder sleeve and the piston can be collected conveniently and effectively.

Description

technical field [0001] The invention relates to a simulation test platform for detecting the thickness of an oil film between a cylinder liner and a piston of a diesel engine, in particular to a simulation test platform for measuring the thickness of an oil film between a cylinder liner and a piston of a diesel engine based on gamma ray thickness measurement technology. Background technique [0002] In the next ten years, internal combustion engines will determine the amount of harmful substances emitted by vehicles and ships during driving. Therefore, energy saving and emission reduction are the most effective measures for gasoline engines and diesel engines to reduce fuel consumption and harmful gas emissions. This will affect the efficiency and reliability of internal combustion engines. Sexuality puts forward higher demands. As far as the internal combustion engine is concerned, reducing friction loss as much as possible can further improve the efficiency of the internal...

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Problems solved by technology

[0007] There are many detection methods for oil film thickness at home and abroad, but most of them are used to test the oil film thickness of a plane oil film or bearing. It has always been a difficult problem to measure the oil film thickness between cylinder liner and piston, and the achievements made in this regard are also very good. limited

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