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:
Jun. 26, 2012
Filed:
Sep. 29, 2006
Dirk Hartmann, Stuttgart, DE;
Georg Mallebrein, Korntal-Muenchingen, DE;
Nicolas Ide, Ludwigsburg, DE;
Andreas Roth, Muehlacker-Lomersheim, DE;
Lutz Reuschenbach, Stuttgart, DE;
Frank Schiller, Tamm, DE;
Markus Deissler, Neckarsulm, DE;
Michael Drung, Muehlacker, DE;
Dirk Hartmann, Stuttgart, DE;
Georg Mallebrein, Korntal-Muenchingen, DE;
Nicolas Ide, Ludwigsburg, DE;
Andreas Roth, Muehlacker-Lomersheim, DE;
Lutz Reuschenbach, Stuttgart, DE;
Frank Schiller, Tamm, DE;
Markus Deissler, Neckarsulm, DE;
Michael Drung, Muehlacker, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A method and a device are provided for operating an internal combustion engine which allow for an improved diagnosis of the valve mechanism of cylinders of the internal combustion engine. For this purpose, a variable characteristic of a suction performance of a cylinder of the internal combustion engine is ascertained. The variable characteristic of the suction performance is ascertained as a function of the mass flow flowing into an intake manifold of the internal combustion engine and of a change of the intake manifold pressure during an intake phase of the cylinder.