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:
Aug. 03, 2010
Filed:
Feb. 29, 2008
Morgan Andreae, Columbus, IN (US);
Kirtan Bhandary, Columbus, IN (US);
Adrian Dale, Columbus, IN (US);
Jeffrey A. Matthews, Columbus, IN (US);
Vivek A. Sujan, Columbus, IN (US);
Morgan Andreae, Columbus, IN (US);
Kirtan Bhandary, Columbus, IN (US);
Adrian Dale, Columbus, IN (US);
Jeffrey A. Matthews, Columbus, IN (US);
Vivek A. Sujan, Columbus, IN (US);
Cummins IP, Inc, Minneapolis, MN (US);
Abstract
A method is disclosed for preventing an underspeed event of a turbocharger. The method includes interpreting a turbocharger speed, a compressor differential pressure (CDP) and a turbocharger differential pressure (TDP). The method further includes calculating a thrust load capacity (TLC) based on the turbocharger speed, and calculating a current thrust load (CTL) based on the CDP and the TDP. The method further includes calculating a thrust margin based on the TLC and the CTL, and controlling an actuator in response to the thrust margin. Controlling the actuator includes maintaining the thrust margin to a thrust margin target, which may be a function of the turbocharger speed. The actuator is a turbine bypass valve, a compressor bypass valve, a variable geometry turbocharger position, an exhaust throttle and/or an exhaust gas recirculation valve that controls the turbocharger speed.