Patent · US Expired

Gasoline additives for reducing the amount of internal combustion engine intake valve deposits and combustion chamber deposits

US7204863B2 · kind B2 · utility

0Cited by

11References

11Claims

0Family size

Assignee

EXXONMOBIL RESEARCH AND ENGINEERING COMPANY · US

Inventors

Simon R. Kelemen · Annandale, US
Michael Siskin · Dover, US
Kenneth D. Rose · Media, US
Harald Schwahn · Wiesloch, DE
Marco Bergemann · Hockenheim, DE
Michael Ehle · Ludwigshafen, DE
Peter Schreyer · Ingolstadt, DE

Key dates

Filing date	Nov 19, 2002
Grant date	Apr 17, 2007
Priority date	—
Expiry date	Nov 21, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10L10/06
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Compositions and methods are disclosed for reducing combustion chamber deposits (CCD) and/or intake valve deposits (IVD) in spark ignition internal combustion engines. A butyrolactam alkoxylate (BLA) and/or a butyrolactam derivative (BLD) of this invention or a mixture with at least one additional compound of this invention is added to a liquid hydrocarbon or liquid hydrocarbon-oxygenate gasoline each in an amount of about 0.0005-0.5 wt % of the gasoline. Preferably the gasoline is unleaded. The preferred additional components include polyethers (PE) and polyisobutylene amine (PIBA).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.