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:
Sep. 15, 2020
Filed:
Sep. 04, 2018
Applicant:
Afton Chemical Corporation, Richmond, VA (US);
Inventors:
Huifang Shao, Midlothian, VA (US);
Joseph W. Roos, Mechanicsville, VA (US);
Joseph E. Remias, Richmond, VA (US);
Assignee:
Afton Chemical Corporation, Richmond, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/021 (2006.01); F01N 11/00 (2006.01); F02B 47/04 (2006.01); C10L 10/06 (2006.01); B01D 46/42 (2006.01); C09D 1/00 (2006.01); C10M 163/00 (2006.01); F02D 41/02 (2006.01); C10N 40/25 (2006.01); C10N 10/14 (2006.01);
U.S. Cl.
CPC ...
F01N 3/021 (2013.01); B01D 46/42 (2013.01); C09D 1/00 (2013.01); C10L 10/06 (2013.01); C10M 163/00 (2013.01); F01N 11/00 (2013.01); F02B 47/04 (2013.01); F02D 41/0235 (2013.01); B01D 2275/302 (2013.01); B01D 2279/30 (2013.01); C10M 2227/09 (2013.01); C10N 2010/14 (2013.01); C10N 2040/25 (2013.01); F01N 2260/14 (2013.01);
Abstract
Gasoline Direct Injection (GDI) engines require gasoline particulate filters (GPFs) as a key component of the emissions control system to reduce particulate emissions. GPFs are known to have poor initial performance, with performance increasing after the filter develops a cake. This poor initial performance make it impossible to accurately assess vehicle emissions performance at the mileage requirements for vehicle certification. Compositions and methods are disclosed to improve filtration efficiency in a fresh or low mileage GPF.