The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 17, 2007
Filed:
Nov. 19, 2002
Simon Robert Kelemen, Annandale, NJ (US);
Michael Siskin, Randolph, NJ (US);
Kenneth Dale Rose, Media, PA (US);
Harald Schwahn, Wiesloch, DE;
Marco Bergemann, Hockenheim, DE;
Michael Ehle, Ludwigshafen, DE;
Peter Schreyer, Weinheim, DE;
Simon Robert Kelemen, Annandale, NJ (US);
Michael Siskin, Randolph, NJ (US);
Kenneth Dale Rose, Media, PA (US);
Harald Schwahn, Wiesloch, DE;
Marco Bergemann, Hockenheim, DE;
Michael Ehle, Ludwigshafen, DE;
Peter Schreyer, Weinheim, DE;
ExxonMobil Research and Engineering Company, Annandale, NJ (US);
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).