Energy-saving method for cylinder oil of marine diesel engine
A technology of marine diesel engine and cylinder oil, applied in the direction of controlling the pressure of lubricant, can solve the problems of excessive wear of cylinder liner, increase of ship sailing cost, unscientific and other problems
Inactive Publication Date: 2017-05-31
SHANGHAI MARITIME UNIVERSITY
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Problems solved by technology
But this approach is unscientific. Excessive cylinder oil injection rate will not only cause excessive wear of cylinder liners, but also greatly increase the cost of ship navigation
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Embodiment Construction
[0013] The present invention will be further described through specific examples below, and these examples are only used to illustrate the present invention, and are not intended to limit the protection scope of the present invention.
[0014] When the oil injection rate is controlled at the lowest oil injection rate 0.6g / kWh provided by the manufacturer, the residual cylinder oil in the stuffing box of the diesel engine is regularly sampled every day, and the iron content and residual base value of the residual cylinder oil are detected by X-ray diffractometer. and the total base number of the original cylinder oil), as shown in Table 1, is the experimental result of the relationship between the iron content, residual base number and cylinder liner friction and wear at the lowest oil injection rate, and the iron content in the residual cylinder oil in the stuffing box When the residual base value is less than 200μg / kg and the residual base value remains above 50% (for example:...
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The invention discloses an energy-saving method for cylinder oil of a marine diesel engine. The energy-saving method comprises the following steps: firstly, controlling a diesel engine cylinder to work when the minimum oil injection rate is 0.6 g / kWh; secondly, regularly sampling residual cylinder oil of a stuffing box of the diesel engine cylinder every day, and detecting the iron content and the residual alkaline value of a sample; thirdly, when the iron content of the detected sample is larger than 200 [mu]g / kg or the residual alkaline value is smaller than 50%, increasing the oil injection rate of the diesel engine cylinder; and fourthly, when the iron content of the detected sample is smaller than 200 [mu]g / kg and the residual alkaline value is smaller than 50% after the oil injection rate of the diesel engine cylinder is increased, controlling the diesel engine cylinder to continually work when the minimum oil injection rate is 0.6 g / kWh. The iron content and the residual alkaline value of residual cylinder oil of the marine diesel engine are detected to ensure optimal cylinder oil injection rate of the marine diesel engine, so that energy saving of cylinder oil of the marine diesel engine is realized.
Description
technical field [0001] The invention relates to an energy-saving method for marine diesel engine cylinder oil. Background technique [0002] Cylinder oil injection rate refers to the weight of cylinder oil injected into the cylinder per unit time and unit power. The main functions of diesel engine cylinder oil injection are: (1) to ensure that there is a suitable oil film between the piston and the cylinder liner to provide lubrication; (2) to provide enough alkali to neutralize the sulfuric acid produced by the fuel. The optimal oil injection rate should ensure the minimum wear of the cylinder liner, the maximum cleanliness and the best economic benefits. The oil injection rate is too low, the oil film is not completely formed, and semi-dry friction will be formed between the piston ring and the cylinder liner. In this case, the excessive wear of the piston ring and the cylinder liner will be increased, and the gas leakage will increase, and the leaked gas will damage the ...
Claims
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IPC IPC(8): F01M1/16
CPCF01M1/16
Inventor 魏海军刘竑魏立队李精明黄振宇张旭升
Owner SHANGHAI MARITIME UNIVERSITY