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:
Jul. 01, 2003
Filed:
May. 14, 2001
Michael Lehner, Muehlacker, DE;
Heiko Oertel, Stuttgart-Weilimdorf, DE;
Andrea Lohmann, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A method for detecting combustion misfires for internal combustion engines is introduced wherein an index for the rough running of the engine is formed and is compared to a threshold value. The threshold value is dependent upon the load of the engine. Exceeding the threshold value is evaluated as a misfire. The method is characterized in that the threshold value, in addition to being dependent upon the load, is also dependent upon the ignition angle and/or the lambda value or that the formation of the index for the rough running also takes place in dependence upon the ignition angle and/or on the lambda value; and/or that the activation/deactivation of the misfire detection is at least dependent upon the ignition angle and/or on the lambda value.