Infineum International Limited

Other

Adam P Marsh

Jacob I Emert

Philip Skinner

Tushar Kanti Bera

Philip J Woodward

Oliver J Delamore

Jonathan M Hughes

Joseph P Hartley

Robert William Shaw

Nigel A Male

Jesse Dambacher

Daniel J Phillips

Alastair A Cant

Dirk Schwaebisch

Thomas Daniel Wilkinson

Georgina L Cuckston

Timothy M Clitherow

Philip James Woodward

Mark Jackson

Myriam Yagoubi

Georgina Cuckston

Nigel Anthony Male

Joseph Peter Hartley

Tim Clitherow

Jonathan Hughes

Richard Severt

A lubricating oil composition comprises 50 mass % or more of an oil of lubricating viscosity and 0.1 to 25 mass % of at least one of compounds of structures (I), (II), or (III).

Lubricating oil compositions

A low S marine fuel trunk piston diesel engine lubricant includes an overbased metal detergent; a zinc dihydrocarbyl dithiophosphate; optionally an aminic antioxidant; and a borated ashless dispersant. The lubricant exhibits improved thermal and oxidative stability and improved high temperature detergency.

Marine engine lubrication

A method of reducing the incidence of deposits on the pistons of a 4-stroke marine diesel engine during operation of the engine when it is fuelled with a marine residual fuel meeting the ISO 8217 2017 fuel standard for marine residual fuels and having a sulphur content of more than 0.1% and less than 0.5% by mass. The method includes the step of lubricating the engine using a lubricating oil composition comprising:

Method for reducing piston deposits in a marine diesel engine

The use of polyalkylenyl succinic anhydrides to stabilise an additive concentrate which includes a salicylate detergent and a nitrogen-free ashless organic friction modifier.

Additive concentrates

The use of berated dispersant, preferably in combination with polyalkylenyl succinic anhydrides, to stabilise an additive concentrate which includes a salicylate detergent and a nitrogen-free ashless organic friction modifier.

A lubricating oil composition for reducing low-speed pre-ignition events or improving oxidation in a spark-ignited direct injection engine is disclosed. The composition includes a detergent additive which comprises either: an oil-soluble sulfonate including both magnesium and calcium as cations; or an oil-soluble salicylate including both magnesium and calcium as cations.

Lubricating oil composition

A lubricating oil composition which contains, or is made by admixing:

The use of polyalkylenyl succinic anhydrides to stabilize an additive concentrate which includes a salicylate detergent and a nitrogen-free ashless organic friction modifier.

A sulphurised calcium phenate detergent is made by (i) reacting hydrogenated distlled CNSL with a calcium salt and sulphur in the presence of a promoter and process solvent; (ii) reacting the product of (i) with additional calcium salt and promoter, and with a co-surfactant, and then carbonating; and optionally (iii) further carbonating the reaction mixture to obtain overbased sulphurised calcium phenate.

Phenate detergent preparation

An overbased sulphurised calcium phenate detergent additive, made from an aldylphenol, has oxyalkylated phenolic functional groups from unreacted alkylphenol starting material.

Growing community of inventors

Witney, United Kingdom

Adam P Marsh