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:
Dec. 27, 2016
Filed:
Feb. 13, 2015
Chevron Oronite Technology B.v., Rotterdam, NL;
Richard Hogendoorn, Prinsenbeek, NL;
Bertus Bernardus Hoogendam, Rotterdam, NL;
Chevron Oronite Technology B.V., Rotterdam, NL;
Abstract
Disclosed herein is lubricating oil composition for providing enhanced piston cleanliness in an internal combustion engine. The lubricating oil composition includes (a) greater than 65 wt. %, based on the total weight of the lubricating oil composition, of a base oil component having a Kv at 100° C. of about 3.5 to about 4.5 cSt; (b) about 3.0 wt. % to about 10 wt. %, based on the total weight of the lubricating oil composition, of at least one Mannich reaction product prepared by the condensation of a polyisobutyl-substituted hydroxyaromatic compound, wherein the polyisobutyl group is derived from polyisobutene containing at least about 70 wt. % methylvinylidene isomer and has a number average molecular weight of from about 400 to about 2,500, an aldehyde, an amino acid or ester derivative thereof, and an alkali metal base; and (c) at least one ashless dispersant other than component (b); wherein the lubricating oil composition has a sulfur content of less than or equal to about 0.30 wt. %, a phosphorus content of less than or equal to about 0.09 wt. %, and a sulfated ash content of less than or equal to about 1.60 wt. % as determined by ASTM D 874, based on the total weight of the lubricating oil composition; and further wherein the lubricating oil composition is a SAE 0W multi-grade lubricating oil composition.