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:
Nov. 30, 2010
Filed:
Dec. 27, 2007
Roland Karrelmeyer, Bietigheim-Bissingen, DE;
Christina Sauer, Benningen, DE;
Wolfgang Fischer, Gerlingen, DE;
Juergen Haering, Stuttgart, DE;
Roland Karrelmeyer, Bietigheim-Bissingen, DE;
Christina Sauer, Benningen, DE;
Wolfgang Fischer, Gerlingen, DE;
Juergen Haering, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A method for operating an internal combustion engine working according to the Otto principle, in which fuel, particularly gasoline, is injected directly into a combustion chamber and is inflamed by self-ignition. A characteristic quantity characterizing the stability of combustion of an air/fuel mixture located in the combustion chamber is ascertained, and, as a function of the characteristic quantity, a residual gas proportion in the cylinder associated with the combustion chamber is set, in particular minimized, the residual gas proportion being reduced, preferably iteratively, as long as the characteristic quantity does not fall below a specifiable stability boundary.