The Lubrizol Corporation

Michael R Sutton

William R S Barton

Mark C Davies

Ewan E Delbridge

David Price

Oliver Smith

Patrick E Mosier

Matthew D Gieselman

Daniel J Saccomando

Mitchell Peplow

Paul E Adams

David J Moreton

Stephen J Cook

Paul R Vincent

Yanshi Zhang

Shawn Dickess

Mark F Wilkes

John Kent Pudelski

James D Burrington

Jody A Kocsis

Virginia A Carrick

Calvin W Schroeck

Christopher L Friend

Barton J Schober

Marina Baum

Deborah A Langer

Brent R Dohner

Daniel C Visger

Joanne L Jones

Rodney John McAtee

Chor Huang

William Barton

Douglas T Jayne

Clifford P Kowall

Mark Davies

David Cressey

Lisa Blanazs

Jamal Kassir

Chris Huener

Dean Hodgkinson

David Moss

William H O'ryan

William RS Barton

Shawn P Dickess

Mark Garner

Rodney J Mcatee

William H O'RYAN

John D Durham

The disclosed technology relates to lubricants for compression ignition internal combustion engines, particularly those demonstrating at least one of improved seals performance, reduced deposit formation, and excellent durability. The present invention provides a low zinc lubricating composition comprising (a) an oil of lubricating viscosity, (b) a borated dispersant, and (c) a metal-free organo-phosphorus anti-wear additive, wherein the lubricating composition is substantially free of a metal containing sulfur coupled alkyl phenol compound. Further, the low zinc lubricating composition contains zinc in an amount less than 600 ppm by weight of the composition.

Low zinc lubricant composition

A lubricant composition comprising an oil of lubricating viscosity and 0.01 to 5 percent by weight of a substantially sulfur-free alkyl phosphate amine salt, where at least 30 mole percent of the phosphorus atoms are in an alkyl pyrophosphate salt structure, exhibits good antiwear performance. In the phosphate amine salt, at least 80 mole percent of the alkyl groups are typically secondary alkyl groups of 3 to 12 carbon atoms.

Alkyl phosphate amine salts for use in lubricants

A lubricant composition comprising an oil of lubricating viscosity and about 0.01 to about 5 percent by weight of a (thio)phosphoric acid salt ('phos-amine salt') of at least one hydrocarbyl amine. The hydrocarbyl amine may be a hindered hydrocarbyl amine, an aromatic hydrocarbyl amine, or a combination thereof.

The invention is directed to a zinc-free lubricating composition for an internal combustion engine containing a phosphorus anti-wear agent, an ashless antioxidant, and an oxyalkylated phenol compound. The lubricating composition provides wear protection, deposit control, and improved acid control with reduced levels of metal-containing additives.

Zinc-free lubricating composition

The invention provides a lubricating composition containing an antiwear agent and an oil of lubricating viscosity. The invention further relates to the use of the lubricating composition in an internal combustion engine, or a driveline device.

Lubricating composition containing an antiwear agent

The invention provides a lubricant composition comprising an oil of lubricating viscosity and 0.01 wt % to 15 wt % of a (thio)phosphoric acid salt of an N-hydrocarbyl-substituted gamma- (&#x3b3;-) or delta-amino(thio)ester. The invention further relates to a method of lubricating a mechanical device with the lubricant composition.

Lubricant composition containing an antiwear agent

The invention provides a lubricating composition containing (a) an oil of lubricating viscosity, (b) a phosphite having at least one hydrocarbyl group that has 4 or more carbon atoms, and (c) a compound derived from a hydroxy-carboxylic acid. The invention further relates to the use of the lubricating composition in an internal combustion engine.

Ultrasonic measurement apparatusincludes a transmitterto transmit an ultrasonic signalinto an item. A receiverreceives echoesfrom the item. The apparatusmeasures the frequency spectrum of the echoand makes a comparison with another frequency spectrum to extract information relating to a change in the item. For example, the itemmay wear during use. A comparison of the frequency spectrum, with previous frequency spectra, allows changes of dimension of the itemto be identified. Changes in amplitudes of the frequency spectrum allow changes in roughness to be detected.

Ultrasonic measurement

A fluidis contained within a chamber. The chamber wallhas an inner surfaceexposed to the fluidand an outer surfaceseparated from the inner surfaceby the materialof the wall. Ultrasoundis introduced into the material. Measurement of the time of flight of the ultrasoundthrough the bodyallows a measurement to be made of the pressure of the fluid

In accordance with the present invention, it has been discovered that an additive which is substantially insoluble in, has low solubility in and/or is otherwise incompatible with a functional fluid, may be supplied to the functional fluid by use of a gel composition and/or a solid additive composition containing the additive, such that the functional fluid can receive the benefit of the supplied additive and/or contain levels of the additive not otherwise achievable by conventional delivery method due to the incompatibility of the additive with the functional fluid.

Delivery of substantially insoluble additives to functional fluids

The invention provides a lubricating composition containing an oil of lubricating viscosity and a block copolymer of a poly(olefin) block, such as poly(isobutylene) (PIB) and a polyvinyl aromatic) block, such as poly(styrene), wherein the copolymer is optionally functionalized or grafted. The invention further provides a method of using the block copolymer to control deposits in a lubricating oil composition.

Lubricating composition comprising poly (isobutylene) /poly (vinyl aromatic) block copolymer

Ultrasound generating apparatus () comprises an arbitrary waveform generator () to provide a waveform output at (), representing a waveform. A power amplifier (), which may be an operational amplifier, is operable to amplify the waveform output () in power and amplitude to provide a power output () for applying to an ultrasonic transducer ().

Ultrasound generating apparatus, and methods for generating ultrasound

Methods and apparatus relate to ultrasound measurement of a dimension such as the thickness () of an item () which may be worn over time by contact with an item (). An ultrasonic transceiver () couples ultrasound into the item (). Outgoing ultrasound i results in echos r returning to the transceiver (). This allows calculation of time of flight to yield a value for the thickness (). In the examples prescribed, the measurement is repeated a plurality of times in a specified period to extract a dimension from each received signal. Information extracted from the plurality of received signal is used to produce a single value indicative of the dimension of the item () over the specified period.

The invention provides a lubricating composition containing (a) 0.001 wt % to 15 wt % of a polymer with radial or star architecture; (b) an overbased detergent; (c) a dispersant; and (d) an oil of lubricating viscosity. The invention further provides a method for lubricating a mechanical device with the lubricating composition.

Star polymer lubricating composition

The invention provides a lubricating composition containing an oil of lubricating viscosity and a calcium-containing detergent with a soap content of 0.06 wt % to 1.6 wt % of the lubricating composition. The lubricating composition is suitable for lubricating an internal combustion engine.

Lubricating composition containing overbased detergent

Growing community of inventors

Matlock, United Kingdom

Michael R Sutton