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. 05, 2019
Filed:
Feb. 22, 2017
Applicant:
Southwest Research Institute, San Antonio, TX (US);
Inventors:
Raphael Gukelberger, San Antonio, TX (US);
Bradley Denton, San Antonio, TX (US);
Assignee:
Southwest Research Institute, San Antonio, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/00 (2006.01); F02M 26/41 (2016.01); F02D 41/40 (2006.01); F02M 26/43 (2016.01);
U.S. Cl.
CPC ...
F02M 26/41 (2016.02); F02D 41/008 (2013.01); F02D 41/0065 (2013.01); F02D 41/401 (2013.01); F02M 26/43 (2016.02); F02D 2250/38 (2013.01); Y02T 10/44 (2013.01); Y02T 10/47 (2013.01);
Abstract
A method of controlling fuel injection to the cylinders of an internal combustion engine, the engine having exhaust gas recirculation (EGR) from at least one dedicated EGR (D-EGR) cylinder, with the other cylinders being main cylinders. The D-EGR cylinder(s) are run at a richer equivalence ratio than the main cylinders, with the goal of providing increased H2 and CO in the recirculated exhaust. The start of fuel injection to the D-EGR cylinder(s) is delayed as compared to the start of fuel injection to the main cylinders.