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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.:

US 9944877 B1

PDFFull Text
Date of Patent:
Apr. 17, 2018

Filed:

Aug. 26, 2015

Composition and method for preventing or reducing engine knock and pre-ignition in high compression spark ignition engines

Applicant:

Exxonmobil Research and Engineering Company, Annandale, NJ (US);

Inventors:

Jason Z. Gao, Rose Valley, PA (US);

Eugine Choi, Marlton, NJ (US);

Luca Salvi, Philadelphia, PA (US);

Matthew W. Boland, Philadelphia, PA (US);

Assignee:

EXXONMOBIL RESEARCH AND ENGINEERING COMPANY, Annandale, NJ (US);

Attorney:

Robert A. Migliorini

Primary Examiner:

Vishal Vasisth

Int. Cl.
CPC ...
C10M 169/04 (2006.01); C10M 105/34 (2006.01); C07C 55/02 (2006.01); C10M 105/06 (2006.01); C10M 105/38 (2006.01); C10M 107/08 (2006.01); C10M 171/00 (2006.01); C10M 105/00 (2006.01); C10M 101/02 (2006.01); C10M 105/04 (2006.01); C10M 105/36 (2006.01); C10M 105/40 (2006.01); C10M 107/02 (2006.01); C10M 107/10 (2006.01); C10M 107/34 (2006.01); C10M 111/02 (2006.01); C10M 111/04 (2006.01);
U.S. Cl.
CPC ...
C10M 105/06 (2013.01); C10M 101/02 (2013.01); C10M 105/00 (2013.01); C10M 105/04 (2013.01); C10M 105/36 (2013.01); C10M 105/38 (2013.01); C10M 105/40 (2013.01); C10M 107/02 (2013.01); C10M 107/08 (2013.01); C10M 107/10 (2013.01); C10M 107/34 (2013.01); C10M 111/02 (2013.01); C10M 111/04 (2013.01); C10M 171/00 (2013.01); C10M 2203/0206 (2013.01); C10M 2203/1006 (2013.01); C10M 2203/1025 (2013.01); C10M 2205/026 (2013.01); C10M 2205/0265 (2013.01); C10M 2205/0285 (2013.01); C10M 2207/026 (2013.01); C10M 2207/282 (2013.01); C10M 2207/283 (2013.01); C10M 2207/2815 (2013.01); C10M 2207/2825 (2013.01); C10M 2207/2835 (2013.01); C10M 2209/084 (2013.01); C10M 2209/105 (2013.01); C10M 2215/28 (2013.01); C10M 2219/068 (2013.01); C10M 2223/045 (2013.01); C10N 2210/02 (2013.01); C10N 2210/06 (2013.01); C10N 2220/028 (2013.01); C10N 2230/00 (2013.01); C10N 2230/02 (2013.01); C10N 2230/40 (2013.01); C10N 2230/42 (2013.01); C10N 2230/44 (2013.01); C10N 2230/45 (2013.01); C10N 2230/76 (2013.01); C10N 2240/10 (2013.01); C10N 2240/104 (2013.01); C10N 2260/02 (2013.01);
Abstract

A method for preventing or reducing engine knock or pre-ignition in a high compression spark ignition engine lubricated with a lubricating oil by using as the lubricating oil a formulated oil. The formulated oil has a composition that contains at least one branched hydrocarbon having at least about 25% of the carbons in the form of methyl groups, or at least one polyol ester of at least one branched mono-carboxylic acid. A lubricating engine oil having a composition that contains at least one branched hydrocarbon having at least about 25% of the carbons in the form of methyl groups, or at least one polyol ester of at least one branched mono-carboxylic acid. The lubricating engine oils are useful as passenger vehicle engine oil (PVEO) products.

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