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Marine engine lubrication

A technology for marine engine and engine oil, which is applied in the direction of engine lubrication, engine components, machines/engines, etc., and can solve the problem of expensive bright oil

Inactive Publication Date: 2013-06-26
INFINEUM INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, bright stock is expensive and the prior art describes ways to replace it

Method used

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  • Marine engine lubrication
  • Marine engine lubrication
  • Marine engine lubrication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0114] The invention is illustrated by, but not limited in any way to, the following examples.

[0115] MDCL

[0116] A set of MDCLs was formulated, each containing 20.89% by mass of the same additive in proportion and having a TBN of about 70. The panel included a control consisting of additive and base oil; a reference consisting of additive, base oil, and bright stock; and an inventive MDCL consisting of additive, base oil, and viscosity modifier. The additives are those known in the art and are used in proportions known in the art to be consistent with the properties of MDCL. Viscosity modifiers are star polymers in the form of amorphous styrene-diene copolymers. Bright stock is a Group I bright stock with a kinematic viscosity >20 cSt at 100°C. The base oil is a Group 1 base oil.

[0117] TPEO

[0118] A set of TPEOs was formulated, each containing the same additive in the same proportion of 16% by mass and having a TBN of about 40. The panel included a control ...

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PUM

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Abstract

A two-stroke or four-stroke marine engine lubricating oil composition comprising an oil of lubricating viscosity in a major amount and (A) additives, in respective minor amounts; and (B) a viscosity modifier in the form of a polymer comprising a core and a plurability of polymeric arms extending therefrom. Preferably, brightstock is completely or substantially absent from the composition.

Description

field of invention [0001] The present invention relates to the lubrication of 2-stroke and 4-stroke marine diesel internal combustion engines, the former is generally called a crosshead engine, and the latter is called a trunk piston engine. Their corresponding lubricants are commonly known as Marine Diesel Cylinder Lubricants ("MDCL") and Trunk Piston Engine Oils ("TPEO"). Background of the invention [0002] Crosshead engines are low speed engines with a high to very high power range. They consist of two separately lubricated components: the piston / cylinder assembly lubricated with high viscosity oil (MDCL) in total loss lubrication; and the crankcase lubricated with a less viscous lubricant, commonly known as system oil. [0003] Trunk piston engines may be used in marine, power generation, and rail traction applications and may have higher speeds than crosshead engines. A single lubricant (TPEO) is used for crankcase and cylinder lubrication. All major moving parts of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M143/12C10N30/06
CPCC10M143/12C10M2203/108C10M2205/028C10M2205/04C10M2205/06C10N2020/02C10N2020/04C10N2030/06C10N2020/073C10N2020/075C10N2030/52C10N2040/252C10N2060/02C10M169/00C10M171/00F01M9/02
Inventor M·多恩T·加纳F·吉尔希克
Owner INFINEUM INT LTD