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:
Jun. 15, 2021
Filed:
Sep. 19, 2014
Applicant:
The Lubrizol Corporation, Wickliffe, OH (US);
Inventors:
Patrick E. Mosier, Bay Village, OH (US);
Jeffry G. Dietz, Shaker Heights, OH (US);
Alexander Sammut, Chardon, OH (US);
Assignee:
The Lubrizol Corporation, Wickliffe, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C10M 169/04 (2006.01); C10M 135/04 (2006.01); C10M 129/76 (2006.01); C10M 133/12 (2006.01); C10N 10/04 (2006.01); C10N 40/25 (2006.01);
U.S. Cl.
CPC ...
C10M 169/04 (2013.01); C10M 129/76 (2013.01); C10M 133/12 (2013.01); C10M 135/04 (2013.01); C10M 2203/1025 (2013.01); C10M 2207/026 (2013.01); C10M 2207/028 (2013.01); C10M 2215/064 (2013.01); C10M 2215/28 (2013.01); C10M 2219/022 (2013.01); C10M 2219/046 (2013.01); C10N 2010/04 (2013.01); C10N 2040/255 (2020.05);
Abstract
The invention is directed to a method for reducing low speed pre-ignition events in a spark-ignited direct injection internal combustion engine by supplying to the sump a lubricant composition which contains an oil of lubricating viscosity and an ashless antioxidant. The ashless antioxidant may be selected from phenolic compounds, aryl amine compounds, and sulfurized olefins, especially 2,6-hindered phenols and diarylamine compounds.