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. 25, 2015
Filed:
Oct. 08, 2013
Mtu Friedrichshafen Gmbh, Friedrichshafen, DE;
Michael Prothmann, Friedrichshafen, DE;
Andreas Flohr, Friedrichshafen, DE;
Joerg Remele, Hagnau, DE;
Martin Lehmann, Kressbronn, DE;
Alexander Bernhard, Meckenbeuren, DE;
Andreas Krammer, Bodolz, DE;
MTU FRIEDRICHSHAFEN GMBH, Friedrichshafen, DE;
Abstract
In a method for controlling the NOx concentration in the exhaust gas of an internal combustion engine in which an NOx control deviation is calculated from an actual NOx value and a desired NOx value, a control value is calculated based on the NOx control deviation via an NOx controller and by means of the control value at least one condition of the cylinder inlet flow volume of the internal combustion engine is adjusted in that, additionally, an adaption injection begin is determined in dependence on the control value of the NOx controller, and the injection begin is changed by the adaption injection begin.