METHOD OF OPERATING INTERNAL COMBUSTION ENGINE BY INTRODUCING DETERGENT INTO COMBUSTION CHAMBER

WIPO Patent Application WO2003083020

A3

In a method 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.

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MACKNEY DEREK W (GB)
MACDUFF MALCOLM G J (GB)
ARTERS DAVID C (GB)
BARBOUR ROBERT H (GB)
CALDER RAYMOND M (GB)
DUNCAN DAVID A (US)
DOGLIO JAMES A (US)
JACKSON MITCHELL M (US)
DALY DANIEL T (US)
LAMB GORDON D (GB)

PCT/US2003/011199

January 22, 2004

March 28, 2003

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LUBRIZOL CORP (US)
MACKNEY DEREK W (GB)
MACDUFF MALCOLM G J (GB)
ARTERS DAVID C (GB)
BARBOUR ROBERT H (GB)
CALDER RAYMOND M (GB)
DUNCAN DAVID A (US)
DOGLIO JAMES A (US)
JACKSON MITCHELL M (US)
DALY DANIEL T (US)
LAMB GORDON D (GB)

F02M25/00; C10L1/22; C10M163/00; C10M167/00; C11D7/32; F02D19/12; F02M25/07; F02M37/00; C10L1/18; (IPC1-7): C10M163/00; C10L1/22; C10M167/00

US5634951A	1997-06-03
US4231759A	1980-11-04
GB2010324A	1979-06-27

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