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Lubricating oil composition for marine applications

A technology for marine and composition, applied in lubricating composition, petroleum industry, additives, etc., can solve problems such as performance degradation

Inactive Publication Date: 2008-11-05
AFTON CHEMICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Marine gear oils are particularly susceptible to performance degradation due to water ingress into marine power transmission systems

Method used

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  • Lubricating oil composition for marine applications
  • Lubricating oil composition for marine applications
  • Lubricating oil composition for marine applications

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Experimental program
Comparison scheme
Effect test

Embodiment

[0235] test

[0236] emulsification test

[0237] Sample data from areas where marine gear oils are used, as well as manufacturer's requirements, indicate water ingress into used marine gear oils, which requires specific testing for emulsification. The ASTM D1401 demulsion test shows separation of water and oil, which provides a protocol for emulsification testing, where complete mixing of water and oil is assessed.

[0238] An emulsification test adapted from the ASTM D1401 demulsification test is performed here to assess satisfactory emulsification properties. Generally speaking, in the emulsification test, a certain amount of test liquid and a certain amount of one selected from distilled water, seawater or synthetic seawater are combined, mechanically mixed in a graduated cylinder, and then placed in a constant temperature environment (such as a temperature range of about 30°C to about 90°C) for 24 hours ± 10 minutes. Then, observe the graduated cylinder and measure...

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PUM

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Abstract

A lubricating oil and a lubricant additive composition suitable for use in marine gear applications, including the gears of two-cycle or four-cyale outboard marine engines or the gears of an outdrive of an inboard / outboard marine drivetrain. The lubricating oil and additive composition may exhibit improved water emulsification and wear properties.

Description

technical field [0001] The present invention relates to lubricating oil compositions suitable for use in drivetrains used in marine applications. More specifically, the present invention relates to lubricating oil compositions capable of improving water resistance in marine applications. Background technique [0002] An outboard motor is a self-contained unit that includes the engine, drivetrain and propeller and is usually designed to be suspended from the stern of the boat. Gear oil is usually used to lubricate the power transmission system of marine engines, such as the gears of two-stroke or four-stroke outboard marine engines, or the outboard engines of inboard / outboard marine power transmission systems gear. Marine gear oils tend to lose certain performance characteristics and benefits over time in marine environments. Marine gear oils are particularly susceptible to performance degradation due to water ingress into marine power transmission systems. Normally water...

Claims

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Application Information

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IPC IPC(8): C10M145/24C10M137/10C10M129/10C10N30/06C10N30/12C10N40/04
Inventor C·惠特
Owner AFTON CHEMICAL