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:
Aug. 23, 2022
Filed:
Jan. 11, 2021
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Xiaogang Zhang, Novi, MI (US);
Steven Wooldridge, Manchester, MI (US);
Brad VanDerWege, Plymouth, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F02D 13/02 (2006.01); F02D 41/06 (2006.01); F02D 41/00 (2006.01);
U.S. Cl.
CPC ...
F02D 13/0246 (2013.01); F02D 41/009 (2013.01); F02D 41/064 (2013.01);
Abstract
Methods and systems are provided for reducing hydrocarbon emissions from an engine. In one example, a method may include adjusting timing profiles of a first and a second exhaust valve to selectively allow pneumatic communication between a cylinder and exhaust ports of an exhaust manifold during an engine cold start.