The Lubrizol Corporation

Daniel H Heath

Frederick P Boyle

Herman F George

Gary A Garvin

Klaus-Werner Damm

Dale Hicks

Terence Edward Robinson

Peter John Moore

Ewa A Bardasz

Thomas T Curtis

Peter B Thomson

A sump-lubricated internal combustion engine equipped with exhaust gas recycle, lubricated with (a) an oil of lubricating viscosity, (b) 0.05 to 1 percent by weight of an amide of an aliphatic carboxylic acid, and (c) at least one additional dispersant, detergent, or anti-wear agent, exhibits reduced temperature of the lubricant in the sump.

Use of an amide to reduce lubricant temperature

A viscometer for sensing or characterizing the stress required to shear a fluid at a given rate includes a pair of members coaxially mounted for relative rotation. Between the members is an annular gap defining a flow path for the fluid. The flow path is configured such that during differential rotation of the members, fluid is caused to flow through the annular gap that is a function of the differential rotation and the viscosity of the fluid. A sensor measures the torque or torque equivalent required to achieve such differential rotation between the members.

On-board rotational viscometers

Growing community of inventors

Ravenna, OH, United States of America

Daniel H Heath