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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 10829708 B1

PDFFull Text
Date of Patent:
Nov. 10, 2020

Filed:

Dec. 11, 2017

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:

Zhisheng Gao, Rose Valley, PA (US);

Eugine Choi, Marlton, NJ (US);

Luca Salvi, Haddonfield, NJ (US);

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

Assignee:

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

Attorneys:

Anthony G. Boone

Robert A. Migliorini

Primary Examiner:

Ellen M McAvoy

Int. Cl.
CPC ...
C10M 105/38 (2006.01); C10M 105/34 (2006.01); C10M 105/36 (2006.01); C10M 133/12 (2006.01); C10M 137/10 (2006.01); C10M 101/04 (2006.01); C10M 137/08 (2006.01); G01R 33/46 (2006.01); C10N 30/10 (2006.01); C10N 30/12 (2006.01); C10N 30/14 (2006.01); C10N 30/02 (2006.01); C10N 20/00 (2006.01); C10N 30/00 (2006.01); C10N 40/25 (2006.01);
U.S. Cl.
CPC ...
C10M 105/34 (2013.01); C10M 101/04 (2013.01); C10M 105/36 (2013.01); C10M 105/38 (2013.01); C10M 133/12 (2013.01); C10M 137/08 (2013.01); C10M 137/10 (2013.01); C10M 2207/2815 (2013.01); C10M 2207/2825 (2013.01); C10M 2207/2835 (2013.01); C10M 2215/064 (2013.01); C10M 2215/065 (2013.01); C10M 2223/047 (2013.01); C10N 2020/071 (2020.05); C10N 2030/02 (2013.01); C10N 2030/10 (2013.01); C10N 2030/12 (2013.01); C10N 2030/14 (2013.01); C10N 2030/45 (2020.05); C10N 2040/25 (2013.01); G01R 33/46 (2013.01);
Abstract

A method for preventing or reducing engine knock or pre-ignition in a high compression spark ignition engine with relatively high oil consumption, lubricated with a lubricating oil by using as the lubricating oil a formulated oil. The formulated oil has a composition that contains a lubricating oil base stock comprising at least one ester including at least one group selected from the group consisting of Formula (1), Formula (2), Formula (3) and Formula (4) below or at least one ester having at least 25% of its carbons in the form of methyl groups: The lubricating oils of this disclosure are useful as passenger vehicle engine oil (PVEO) products.

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