James A Doglio

US Patent:

20050215441, Sep 29, 2005

Filed:

Mar 28, 2003

Appl. No.:

10/509164

Inventors:

Derek Mackney - Derbyshire, GB
Malcolm Macduff - Derbyshire, GB
David Arters - Derbyshire, GB
Robert Barbour - Derbyshire, GB
Raymond Calder - Derbyshire, GB
David Duncan - Willoughby OH, US
James Doglio - Mentor OH, US
Mitchell Jackson - Chagrin Falls OH, US
Daniel Daly - Tuscaloosa AL, US
Gordon Lamb - Berkshire, GB

International Classification:

C10M133/02

US Classification:

508291000, 508295000, 508542000, 508562000

Abstract:

In a method of operating an internal combustion engine, a nitrogen-containing detergent composition is introduced into a combustion chamber of the engine wherein the detergent composition can improve the performance of both a fuel composition and a lubricating oil of the engine. The detergent composition contains (A) a reaction product of a hydrocarbyl-substituted acylating agent and an amine, (B) a hydrocarbyl-substituted amine, (C) a Mannich reaction product, (D) a high molecular weight polyetheramine, or (E) a mixture thereof.