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Simulator for measuring lubricating oil film thickness of cylinder of internal combustion engine by TDLAS technology

A technology for internal combustion engine cylinders and lubricating oil films, applied to measuring devices, optical devices, instruments, etc., can solve problems such as difficulty in ensuring the accuracy of measurement results, improve the limited pressure rise in cylinders, reduce costs and processing difficulties, and simplify The effect of the experimental system

Inactive Publication Date: 2019-09-20
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Ultrasonic measurement has the advantages of strong penetrability, non-contact measurement, and good safety. However, due to the impact of internal combustion engine vibration and noise, it is difficult to guarantee the accuracy of the measurement results. certain limitations

Method used

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  • Simulator for measuring lubricating oil film thickness of cylinder of internal combustion engine by TDLAS technology
  • Simulator for measuring lubricating oil film thickness of cylinder of internal combustion engine by TDLAS technology

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specific Embodiment approach 1

[0026] Specific implementation mode one: combine figure 1 To illustrate this embodiment, the TDLAS technology described in this embodiment measures the internal combustion engine cylinder lubricating oil film thickness simulation device including an internal combustion engine cylinder, a tunable laser 24, a fiber coupler 23, a first laser detector 25, a second laser detector 26 and a computer System 1;

[0027] Described fiber coupler 23 comprises four ports, and the laser light that tunable laser 24 produces enters fiber coupler 23 through No. 1 port, is divided into two identical laser beams through fiber coupler 23, and one of them is emitted through No. 2 end, and From the second laser detector 26, another beam is emitted through the No. 3 port. The No. 3 port is embedded in the cylinder wall of the internal combustion engine cylinder, and the laser emitted from the No. 3 port is irradiated on the lubricating oil film in the internal combustion engine cylinder. The oil fi...

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Abstract

The invention discloses a simulator for measuring the lubricating oil film thickness of a cylinder of an internal combustion engine by TDLAS technology, relates to lubricating oil film thickness measurement technologies, and aims at satisfying development of the oil film thickness measurement technologies of internal combustion engine cylinders. Laser generated by a tunable laser device enters a fiber coupler via a first port and divided into two identical beams of laser, one beam is output via a second port and detected by a second laser detector, the other beam is output via a third port which is embedded in a cylinder wall of the internal combustion engine, laser output via the third port irradiates the lubricating oil film in the internal combustion engine cylinder, reflected by the lubricating oil film, input to the third port and then output via a third port and detected by a first laser detector; and a computer system is used to adjust the wave number of laser generated by the tunable laser, and the thickness of the lubricating oil film is calculated according to detection results of the first and second laser detectors. Thus, the device is suitable for simulated measurement for the thickness of the lubricating oil film of the internal combustion engine cylinder.

Description

technical field [0001] The invention relates to a technology for measuring lubricating oil film thickness. Background technique [0002] The function of the lubrication system is to continuously deliver clean lubricating oil with a certain pressure and temperature to each friction surface, so that an oil film is formed between them, so as to reduce the loss of friction work and the wear of parts. The lubricating oil can also take away the heat generated by the friction of the parts, cool the friction surface, and clean away the wear debris and impurities on the friction surface to ensure the normal operation of the parts. In modern industry, there is friction between any contact surfaces, which will lead to wear and heat of parts, so a good lubrication system is the key to ensure the normal operation of equipment. The temperature and pressure in the cylinder of the internal combustion engine change drastically, and there is severe friction between the piston and the cylinde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/06
CPCG01B11/0633
Inventor 杨晓涛贺彦博郭奥刘晓楠穆彦龙姜子印张子建谌绍天乔天旭王国水于子宁鲁同阁
Owner HARBIN ENG UNIV
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