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Method and device for testing lubricating oil diffusion rate

A technology of diffusion rate and lubricating oil, which is applied in the field of testing the diffusion rate of lubricating oil, can solve the problems that have not yet been searched for the diffusion performance test and effective evaluation of marine lubricating oil, and achieve the effect of simple method and accurate test results

Active Publication Date: 2014-06-04
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are no relevant reports on the testing and effective evaluation of the diffusion performance of marine lubricants

Method used

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  • Method and device for testing lubricating oil diffusion rate
  • Method and device for testing lubricating oil diffusion rate
  • Method and device for testing lubricating oil diffusion rate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Calcium sulfonate detergent test results in diffusion performance evaluation:

[0022] The oil sample used in the test is calcium sulfonate detergent: super high base value calcium benzenesulfonate-T106D: 8%, HVIS 500SN: 92%.

[0023] Experimental conditions: the temperature of the test oil sample is 90±0.5°C; the temperature of the test panel is 200±0.5°C; a drop of the test oil sample is dropped, and the following experimental results are obtained:

[0024] Test time, s

Embodiment 2

[0026] Diffusion performance evaluation of sulfurized alkylphenate calcium detergent:

[0027] Oil sample for test: ultra-high base value sulfurized calcium alkylphenate-T115C: 8%, HVI S 500SN: 92%

[0028] Experimental conditions: the temperature of the oil sample used for the test is 100°C, ±0.5°C; the temperature of the test panel is

[0029] 260°C, ±0.5°C; dripping oil samples for the test, the following experimental results are obtained:

[0030] Test time, s

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Abstract

The invention relates to a method and a device for testing lubricating oil diffusion rate. The method is that: heating a test panel to be at temperature of 200 DEG C to 350 DEG C, dripping an oil sample for testing and at temperature of 80 DEG C to 120 DEG C onto the test panel, using a stereoscopic microscope and a camera to track the oil drip diffusion process, using an objective micrometer to calibrate pixel distance of the microscope, accurately measuring the diffusion diameter of the oil sample and corresponding diffusion time of the oil sample with the diffusion diameter, and obtaining the evaluation result. By using the method and the device to finish simulation test of lubricating oil of a cylinder for a ship, the oil diffusion performance of lubricating oil can be accurately obtained due to the fact that the simulation environment conditions are identical to the practical conditions of the wall of the cylinder for the ship and a piston in work.

Description

technical field [0001] The invention relates to a method and a device for testing the diffusion rate of lubricating oil. Background technique [0002] At present, the development trend of marine engine technology is large bore and long stroke. The bore of the largest MAN B&W engine has exceeded 1 meter, while the piston stroke of the Wartsila engine is close to 3 meters from the top dead center to the bottom dead center; but considering cost reduction , the oil injection rate of cylinder lubricating oil tends to gradually decrease, and the minimum oil injection amount of BN70 cylinder lubricating oil reaches 0.60g / kWh. This puts forward higher requirements on the diffusion performance of cylinder lubricating oil, so as to ensure that a complete and continuous oil film is formed on a larger lubricating area under the condition of less oil injection. Therefore, in the process of configuring cylinder lubricating oil, it is necessary to evaluate the performance of the oil, espe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N13/00
Inventor 杨传富张杰刘功德马玉莉
Owner PETROCHINA CO LTD
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