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:
Jul. 07, 2015
Filed:
Apr. 19, 2012
Applicant:
Rajkumar Subramanian, Columbus, IN (US);
Inventor:
Rajkumar Subramanian, Columbus, IN (US);
Assignee:
Cummins Inc., Columbus, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M 25/07 (2006.01); F02D 41/00 (2006.01); F02D 41/14 (2006.01);
U.S. Cl.
CPC ...
F02D 41/0077 (2013.01); F02M 25/0756 (2013.01); F02M 25/0753 (2013.01); F02M 25/0722 (2013.01); F02D 41/0072 (2013.01); F02D 2041/141 (2013.01); F02D 2200/0406 (2013.01); Y02T 10/47 (2013.01);
Abstract
Systems, methods and techniques for exhaust gas recirculation are provided. The system includes a variable venturi device that connects an inlet air supply line and recirculating exhaust gas supply line to an intake manifold supply. A controller in communication with at least one pumping pressure sensor and a flow control element position sensor associated with the variable venturi mixing device is operable to determine a flow rate of the recirculating exhaust gas. The flow rate determination may be used to control NOemissions during operation of the internal combustion engine.