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:
Apr. 10, 2012
Filed:
Oct. 10, 2008
Changsoo Kim, Bloomfield Hills, MI (US);
Gregory F. O'daniel, Davisburg, MI (US);
Steven E. Ives, Durand, MI (US);
Ellen Shirley Schwartz, Ann Arbor, MI (US);
Changsoo Kim, Bloomfield Hills, MI (US);
Gregory F. O'Daniel, Davisburg, MI (US);
Steven E. Ives, Durand, MI (US);
Ellen Shirley Schwartz, Ann Arbor, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A combustion engine is configured to substantially reduced pressure in the crankcase relative to atmospheric conditions. Under the conditions of reduced pressure, removal of contaminants present in the lubricating oil present is effected, which may provide one or more benefits including extended service intervals, reduced volumes of motor oils used, and lessened wear of internal engine components.