JP2008508398A5

JP2008508398A5 -

Info

Publication number: JP2008508398A5
Application number: JP2007523690A
Authority: JP
Filing date: 2005-07-22
Publication date: 2012-08-30
Anticipated expiration: 2025-07-22

Description

（発明の要旨）
１実施態様では、本発明は、少なくとも１６００キロワットの出力を備えた内燃機関を潤滑組成物で潤滑させる方法を提供し、該方法は、以下の工程を包含する：
（１）該内燃機関の１つまたはそれ以上の性能特性をモニターする工程；
（２）潤滑組成物に所望のＴＢＮレベルを与えるように添加剤パッケージを選択して、該内燃機関の該性能特性を変える工程；
（３）工程（２）の該添加剤パッケージと、（ａ）２ｍｍ ^２／ｓ〜１２ｍｍ ^２／ｓの粘度を有し、ライトニュートラル基油を含有する成分と、必要に応じて、（ｂ）１２ｍｍ ^２／ｓより高く３５ｍｍ ^２／ｓまたは４０ｍｍ ^２／ｓまでの粘度を有し、ヘビーニュートラル基油またはブライトストックを含有する成分とを混ぜ合わせて潤滑組成物を形成する工程；そして
（４）工程（３）の該潤滑組成物を該内燃機関に供給する工程、
ここで、該潤滑組成物は、少なくとも１０ｍｇＫＯＨ／ｇの全塩基価を有する；そして該ライトニュートラル基油を含有する該成分は、内燃機関に利用できるオイルリザーバから供給される。 (Summary of the Invention)
In one embodiment, the present invention provides a method of lubricating an internal combustion engine with an output of at least 1600 kilowatts with a lubricating composition, the method comprising the following steps:
(1) monitoring one or more performance characteristics of the internal combustion engine;
(2) selecting an additive package to provide the desired TBN level to the lubricating composition to alter the performance characteristics of the internal combustion engine;
(3) and the additive package of step (2), ^(a) has a viscosity of 2mm ² / s~12mm 2 / s, a component containing light neutral base oil, if desired, (b) has a viscosity of from greater 35 mm ² / s or 40 mm ² / s from 12 mm ² / s, by mixing the component containing the heavy neutral base oil or bright stock form a lubricating composition process; and (4 ) Supplying the lubricating composition of step (3) to the internal combustion engine;
Here, the lubricating composition has a total base number of at least 10 mg KOH / g; and the components containing the light neutral base oil are supplied from an oil reservoir available to an internal combustion engine.

Claims

A method of lubricating an internal combustion engine having an output of at least 1600 kilowatts with a lubricating composition, the method comprising the following steps:
(1) monitoring one or more performance characteristics of the internal combustion engine;
(2) selecting an additive package to provide a desired TBN level to the lubricating composition to alter the performance characteristics of the internal combustion engine, the additive package comprising an overbased sulfonate detergent; Including a process;
(3) and the additive package of step (2), ^(a) has a viscosity of 2mm ² / s~12mm 2 / s, a component containing light neutral base oil, if desired, (b) has a viscosity of from greater 35 mm 2 / ^s from 12 mm 2 / ^s, a step of mixed with a component containing heavy neutral base oil or bright stock to form the lubricating composition, wherein said light neutral the base oil is provided from a new or used crankcase system oil, and wherein the light neutral base oil is present in 40 to 99.9 weight percent of the lubricating composition, process; and (4) step Supplying the lubricating composition of (3) to the internal combustion engine;
Wherein the lubricating composition has a total base number of at least 10 mg KOH / g; and wherein the components containing the light neutral base oil are supplied from an oil reservoir available to the internal combustion engine And the method provides a method of lubricating a two-stroke marine diesel cylinder;
Method.

The method of claim 1, wherein the internal combustion engine is a 2-stroke marine diesel engine.

The method of claim 1, wherein the total base number of the lubricating composition is 30 mg KOH / g or more.

The method of claim 1, wherein the one or more characteristics of the engine include wear, engine load, TBN changes, deposits, or corrosion.

The method of claim 1, wherein the additive package of step (2) is mixed with a base oil in a blender.

The additive package of step (2) further contains at least one performance additive, the performance additive comprising a polymeric thickener, a dispersant, an antiwear agent, a detergent or a mixture thereof. The method of claim 1 comprising.

The polymer thickener contains polyisobutylene having a weight average molecular weight Mw higher than 8000 and up to 25,000 or poly (meth) acrylate having a weight average molecular weight Mw of 20,000 to 300,000. 6. The method according to 6.

The light neutral base oil is present at 50 to 99.9 weight percent of the lubricating composition; the heavy neutral base oil or bright stock is present at 0.01 to 25 weight percent of the lubricating composition. The method of claim 1, wherein at least one performance additive is present at 0.01 to 25 weight percent of the lubricating composition.