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:
Jun. 14, 2022
Filed:
Mar. 30, 2021
Applicant:
Purdue Research Foundation, West Lafayette, IN (US);
Inventors:
Gregory M. Shaver, Lafayette, IN (US);
Kalen Vos, Albuquerque, NM (US);
Mrunal Joshi, Columbus, IN (US);
Assignee:
Purdue Research Foundation, West Lafayette, IN (US);
Primary Examiner:
Int. Cl.
CPC ...
F02D 13/02 (2006.01); F02D 31/00 (2006.01); F02D 41/00 (2006.01); F02D 41/02 (2006.01); F02D 41/06 (2006.01);
U.S. Cl.
CPC ...
F02D 41/0245 (2013.01); F02D 13/0249 (2013.01); F02D 31/001 (2013.01); F02D 41/064 (2013.01); F01N 2430/10 (2013.01); F02D 41/006 (2013.01); F02D 2200/0802 (2013.01);
Abstract
Increasing engine idle speed, combined with modulating the timing of the exhaust valve during idling, increases heat transfer from the engine to aftertreatment systems to reduce the time required for the aftertreatment system to reach a minimum temperature for efficient operation. The resultant increases in heat transfer include an increase of at least 30% in the flow rate of exhaust gases and an increase of exhaust temperature by at least 25° C.