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marine engine lubrication

A lubricant composition, technology of use, applied in the field of deposit formation, capable of solving problems such as the problem of deposit formation not mentioned

Active Publication Date: 2017-03-01
INFINEUM INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, '329 is silent on the aforementioned problem of deposit formation in centrifuges for trunk piston engines

Method used

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  • marine engine lubrication
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preparation example Construction

[0064] Regardless of their preparation method, the sulfurized alkylphenols used to prepare overbased detergents generally contain diluents and unreacted alkylphenols, and generally contain 2-20% by mass based on the mass of sulfurized alkylphenols, preferably 4- 14% by mass, most preferably 6-12% by mass of sulfur.

[0065] As mentioned above, the term "phenol" as used herein includes phenols modified by chemical reaction with, for example, aldehydes, and Mannich base condensation phenols.

[0066] Aldehydes that can be modified with phenol include, for example, formaldehyde, propionaldehyde, and butyraldehyde. The preferred aldehyde is formaldehyde. Suitable aldehyde-modified phenols are described, for example, in US-A-5,259,967.

[0067] Mannich base condensations of phenols are prepared by the reaction of phenols, aldehydes and amines. Examples of suitable Mannich base condensed phenols are described in GB-A-2121432.

[0068] In general, phenols may contain substituents...

Embodiment

[0112] The invention is illustrated by, but not limited in any way to, the following examples.

[0113] Example

[0114] The following examples use a centrifuge water separation test, which evaluates the ability of oil to remove water from prepared test mixtures of oil and water. The experiments used an Alfa Laval MAB103B2.0 centrifuge connected to a Watson Marlow peristaltic pump. The centrifuge was sealed with 2L of water. The amount of sediment formed in the centrifuge was measured during the test. The test was carried out at 87°C. Mix the pre-measured amount of water and test oil together, and then pass through the centrifuge at a rate of 2L / min. The test was run for 1.5 hours, passing the mixture through the centrifuge about 10 times. The centrifuge was weighed before and after the test. Poor trunk piston diesel engine lubricant compositions can produce large amounts of deposits in centrifugal systems.

[0115] A trunk piston engine oil ("TPEO") having a TBN of a...

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Abstract

A marine engine lubrication. Polyisobutylene having a molecular weight of 400-8,000 and a kinematic viscosity of 50-50,000 mm2 / sec at 100°C lubricates the composition during operation when used as an additive at 1-25% by mass in a trunk piston diesel engine lubricant composition Reduces deposit formation in centrifuges for trunk piston diesel engines.

Description

[0001] field of invention [0002] The present invention relates to reducing deposit formation in centrifugal systems of trunk piston diesel engines. [0003] Background of the invention [0004] Trunk piston diesel engines are used in marine, power generation and rail traction applications and may have a rated speed of 300-1000 rpm. In trunk piston diesel engines, a single lubricant composition is used for crankcase and cylinder lubrication. All major moving parts of the engine, namely main and big end bearings, camshafts and valve gears, are lubricated by a pumped circulation system. The cylinder liner is lubricated partly by splash lubrication and partly by oil from the circulation system, which finds its way through the hole in the piston skirt to the cylinder wall via the connecting rod and piston pin. [0005] Trunk piston diesel engines use a centrifugal system to remove contaminants such as soot or water from the lubricant composition. Centrifugal systems rely on the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M143/06C10N30/04C10N40/25
CPCC10M143/06C10M2205/024C10N2020/02C10N2020/04C10N2030/04C10N2030/40C10N2030/52C10N2040/252C10N2040/25F01M9/02
Inventor M·多恩T·加纳
Owner INFINEUM INT LTD