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:
Nov. 27, 2012
Filed:
May. 29, 2009
Applicants:
Magdi K. Khair, San Antonio, TX (US);
Stefan Simescu, Boerne, TX (US);
Gary D. Neely, Boerne, TX (US);
Vlad L. C. Ulmet, San Antonio, TX (US);
Inventors:
Magdi K. Khair, San Antonio, TX (US);
Stefan Simescu, Boerne, TX (US);
Gary D. Neely, Boerne, TX (US);
Vlad L. C. Ulmet, San Antonio, TX (US);
Assignee:
Southwest Research Institute, San Antonio, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of reducing emissions by operating a diesel engine in a stoichiometric air-fuel ratio mode. To achieve an optimal stoichiometric mode, intake throttling, boost air intake control, fuel injection adjustments, and exhaust gas recirculation (EGR) are used. This mode of operation permits an aftertreatment system that has only an oxidation catalyst and a particulate filter.