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:
Sep. 17, 2002
Filed:
Jan. 16, 2001
Heiko Oertel, Stuttgart-Weilimdorf, DE;
Andrea Lohmann, Stuttgart, DE;
Juergen Schwabe, Leinfelden-Echterdingen, DE;
Ralf Schnee, Eberdingen, DE;
Uwe Buck, Esslingen, DE;
Peter Wiltsch, Wimsheim, DE;
Heinz Viel, Kaisersbach, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a method for detecting combustion misfires in a multi-cylinder internal combustion engine. Combustion misfires are detected from data for the rough running of individual cylinders via a comparison with threshold values at operating points stored in a characteristic field. These data are determined within the engine. The combustion misfire detection is suppressed below an rpm-dependent zero-load characteristic line. The zero-load characteristic line is continuously adapted to the actually present lowest load at corresponding rpm values during vehicle operation.