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:
Jan. 29, 2019
Filed:
Nov. 15, 2017
Applicant:
Southwest Research Institute, San Antonio, TX (US);
Inventor:
Cary A Henry, Helotes, TX (US);
Assignee:
SOUTHWEST RESEARCH INSTITUTE, San Antonio, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M 26/40 (2016.01); F02M 26/01 (2016.01); F02M 26/41 (2016.01); F01L 1/047 (2006.01); F01L 1/34 (2006.01); F02M 26/43 (2016.01); F01L 1/053 (2006.01);
U.S. Cl.
CPC ...
F02M 26/40 (2016.02); F01L 1/047 (2013.01); F01L 1/34 (2013.01); F02M 26/01 (2016.02); F02M 26/41 (2016.02); F02M 26/43 (2016.02); F01L 2001/0537 (2013.01); F01L 2800/10 (2013.01);
Abstract
A method of providing internal EGR to an engine having at least one dedicated EGR cylinder. The main (non dedicated) cylinders are operated with internal EGR, in addition to external EGR from the dedicated EGR cylinder. The dedicated EGR cylinder has separate valve control so that it need not be operated with internal EGR, thereby allowing it to be operated at a richer air-to-fuel ratio.