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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 11155764 B1

PDFFull Text
Date of Patent:
Oct. 26, 2021

Filed:

Jan. 18, 2017

Lubricants for use in boosted engines

Applicant:

Afton Chemical Corporation, Richmond, VA (US);

Inventors:

Kongsheng Yang, Glen Allen, VA (US);

Kristin Fletcher, Midlothian, VA (US);

William Y. Lam, Glen Allen, VA (US);

Jeremy Styer, Glen Allen, VA (US);

Assignee:

AFTON CHEMICAL CORPORATION, Richmond, VA (US);

Attorney:

Mendelsohn Dunleavy, P.C.

Primary Examiner:

Ellen M McAvoy

Int. Cl.
CPC ...
C10M 135/10 (2006.01); C10M 171/00 (2006.01); C10M 163/00 (2006.01); C10M 129/50 (2006.01); C10M 139/00 (2006.01); C10N 10/04 (2006.01); C10N 10/12 (2006.01); C10N 30/04 (2006.01); C10N 30/08 (2006.01); C10N 30/10 (2006.01); C10N 30/00 (2006.01); C10N 40/25 (2006.01); C10N 60/14 (2006.01);
U.S. Cl.
CPC ...
C10M 135/10 (2013.01); C10M 129/50 (2013.01); C10M 139/00 (2013.01); C10M 163/00 (2013.01); C10M 171/00 (2013.01); C10M 2203/1025 (2013.01); C10M 2205/0285 (2013.01); C10M 2207/028 (2013.01); C10M 2207/262 (2013.01); C10M 2219/046 (2013.01); C10M 2227/00 (2013.01); C10N 2010/04 (2013.01); C10N 2010/12 (2013.01); C10N 2030/04 (2013.01); C10N 2030/08 (2013.01); C10N 2030/10 (2013.01); C10N 2030/40 (2020.05); C10N 2030/52 (2020.05); C10N 2040/25 (2013.01); C10N 2040/255 (2020.05); C10N 2060/14 (2013.01);
Abstract

A lubricating oil composition and method of operating a boosted internal combustion engine. The lubricating oil composition includes greater than 50 wt. % of a base oil of lubricating viscosity, calcium, nitrogen, molybdenum and boron. The weight ratio of Ca:N (ppm/ppm) in the lubricating oil composition is greater than 1.3 to less than 3.0, the weight ratio of Ca:Mo (ppm/ppm) in the lubricating oil composition is greater than 6.7 to less than 56.3, and the weight ratio of Ca:B (ppm/ppm) in the lubricating oil composition is greater than 5.0 to less than 9.8. The lubricating oil composition does not contain added magnesium from a magnesium-containing detergent. The lubricating oil composition is resistant to deposit formation in the boosted internal combustion engine, as shown by its ability to ensure a TCO Temperature Increase of less than 9.0% as measured using the 2015 version of the General Motors dexos1® Turbocharger Coking Test.

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