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:
Feb. 15, 2011
Filed:
Feb. 08, 2008
Dirk Hartmann, Stuttgart, DE;
Georg Mallebrein, Kortal-Muenchingen, DE;
Werner Mezger, Eberstadt, DE;
Andreas Roth, Muehlacker-Lomersheim, DE;
Henri Barbier, Schwieberdingen, DE;
Nikolas Poertner, Stuttgart, DE;
Juergen Rappold, Ilsfeld-Auenstein, DE;
Ingo Fecht, Ludwigsburg, DE;
Dirk Hartmann, Stuttgart, DE;
Georg Mallebrein, Kortal-Muenchingen, DE;
Werner Mezger, Eberstadt, DE;
Andreas Roth, Muehlacker-Lomersheim, DE;
Henri Barbier, Schwieberdingen, DE;
Nikolas Poertner, Stuttgart, DE;
Juergen Rappold, Ilsfeld-Auenstein, DE;
Ingo Fecht, Ludwigsburg, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A method and a device for operating an internal combustion engine make it possible to shift the combustion limit. In this context, a predefined output variable of the internal combustion engine such as the torque, for example, is realized in at least one operating state of the internal combustion engine by at least a retardation of an ignition angle. It is checked whether, due to the retardation of the ignition angle, a variable like, for example, a misfiring, characteristic for the combustibility of the air/fuel mixture in a combustion chamber of the internal combustion engine, exceeds a predefined limiting value in terms of a deterioration of the combustibility, and in this case, at least one actuator of the internal combustion engine, different from an actuator for setting the ignition angle, such as the exhaust-gas recirculation valve or EGR valve, for instance, is controlled along the lines of improving the combustibility of the air/fuel mixture.