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:
Oct. 29, 2013
Filed:
Sep. 25, 2011
John N. Chi, Dubuque, IA (US);
John M. Mulloy, Columbus, IN (US);
Sriram S. Popuri, Greenwood, IN (US);
Timothy R. Frazier, Columbus, IN (US);
Martin T. Books, Columbus, IN (US);
Divakar Rajamohan, Columbus, IN (US);
Indranil Brahma, Bloomington, IN (US);
Xi Wei, Asbury, IA (US);
John N. Chi, Dubuque, IA (US);
John M. Mulloy, Columbus, IN (US);
Sriram S. Popuri, Greenwood, IN (US);
Timothy R. Frazier, Columbus, IN (US);
Martin T. Books, Columbus, IN (US);
Divakar Rajamohan, Columbus, IN (US);
Indranil Brahma, Bloomington, IN (US);
Xi Wei, Asbury, IA (US);
Cummins, Inc., Columbus, IN (US);
Abstract
A system is provided for controlling an air handling system for an internal combustion engine. A dual-stage turbocharger includes a high-pressure compressor and variable geometry turbine combination fluidly coupled to a low-pressure compressor and variable geometry turbine combination. A control circuit includes a memory having instructions stored therein that are executable by the control circuit to determine a target low-pressure compressor ratio, a target high-pressure compressor ratio, a target high-pressure compressor inlet temperature and a target high-pressure compressor inlet pressure as a function of a target outlet pressure of the high-pressure compressor and a temperature, a pressure and a target flow rate of air entering the air inlet of the low-pressure compressor, and to control the geometries of the low-pressure and high-pressure turbines as a function of the target low-pressure compressor ratio the target high-pressure compressor ratio respectively.