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Purpose of CF-4 grade diesel engine oil composition for lubrication of ship tail shaft

A kind of oil composition, diesel engine technology, applied in the direction of lubricating composition, petroleum industry, etc.

Inactive Publication Date: 2016-11-30
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no patent or literature record that diesel engine oil can be used in the lubrication of ship stern shaft

Method used

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  • Purpose of CF-4 grade diesel engine oil composition for lubrication of ship tail shaft
  • Purpose of CF-4 grade diesel engine oil composition for lubrication of ship tail shaft
  • Purpose of CF-4 grade diesel engine oil composition for lubrication of ship tail shaft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～7

[0032] Various formulations of CF-415W-40 were prepared by using detergent, dispersant, antioxidant, thickener, pour point depressant, antifoaming agent, and HVI base oil as raw materials. The composition of each formulation is shown in Table 1. The above mixture was heated and stirred at 55°C for 1 hour until completely homogeneous.

[0033] The following test methods were used to investigate the performance of the oil product: the oxidation induction period was used to examine the oxidation resistance of the oil product, the longer the time, the better the anti-oxidation performance of the oil product; The smaller the oil, the better the anti-wear performance of the oil; the coke plate test examines the cleanliness of the oil, the less the coke weight, the better the cleanliness of the oil; the soot dispersibility test examines the dispersibility of the oil, and the viscosity increases The smaller the rate, the better the dispersibility of the oil; the foaming test examines ...

Embodiment 8

[0036] The formula described in [Example 7] was subjected to each bench test specified in the GB11122-2006 CF-4 quality grade standard, and the bench test results are shown in Table 3.

[0037]

[0038]

[0039] table 3

[0040]

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PUM

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Abstract

The invention relates to a purpose of a CF-4 grade diesel engine oil composition for lubrication of a ship tail shaft. The composition disclosed by the invention is prepared from the following components in parts by weight: a)1-10 parts of a detergent, b) 1-15 parts of a dispersant, c) 1-10 parts of an antioxidant, d) 0-20 parts of a thickening agent, e) 0.03-2 parts of a pour point depressant, f) 0.01-1 part of an anti-foaming agent, and h) 50-80 parts of basic oil, the content of calcium in the composition is not less than 2000ppm, the total content of the calcium and magnesium is not less than 2700ppm, and the content of nitrogen is less than 500ppm. Through the adoption of the technical scheme of the composition, the GB11122-2006CF-4 quality grade requirements can be met, and the composition can be used for lubrication of the ship tail shaft.

Description

technical field [0001] The invention relates to the use of a CF-4 grade diesel engine oil composition for lubricating the stern shaft of a ship. Background technique [0002] With the development of diesel engine technology, CD grade diesel engine oil, which is lower than CF grade, cannot meet the oil requirements of some engines. Compared with CD-grade oil, CF-4 has better high-temperature oxidation resistance, detergency and dispersibility and anti-wear performance, which ensures engine cleanliness under various fuel conditions, effectively prevents piston rings from sticking and prolongs engine operating life, and is especially suitable for For engines with complex fuels (such as high sulfur content), low-speed and high-torque output conditions, such as military or civil diesel engines such as ship main engines, generator sets, bulldozers, excavators, mining equipment, and armored transport vehicles. While taking into account the needs of the engine, CF-4 can also meet t...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N30/06C10N30/10C10N30/12C10N40/25C10N40/02
CPCC10M169/044C10M2205/02C10M2205/022C10M2205/024C10M2205/026C10M2207/144C10M2209/084C10M2215/223C10M2219/044C10M2219/087C10M2219/102C10M2229/041C10M2229/051C10M2290/04C10N2030/06C10N2030/12C10N2040/02C10N2040/25
Inventor 秦振清郑金花
Owner CHINA PETROLEUM & CHEM CORP
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