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:
May. 30, 2006
Filed:
Aug. 03, 2001
Juergen Sauler, Stuttgart, DE;
Steffen Franke, Schwieberdingen, DE;
Stefan Unland, Vaihingen-Kleinglattbach, DE;
Oskar Torno, Schwieberdingen, DE;
Axel Heinstein, Wimsheim, DE;
Carsten Kluth, Stuttgart, DE;
Werner Haeming, Neudenau, DE;
Michael Baeuerle, Ditzingen-Heimerdingen, DE;
Juergen Sauler, Stuttgart, DE;
Steffen Franke, Schwieberdingen, DE;
Stefan Unland, Vaihingen-Kleinglattbach, DE;
Oskar Torno, Schwieberdingen, DE;
Axel Heinstein, Wimsheim, DE;
Carsten Kluth, Stuttgart, DE;
Werner Haeming, Neudenau, DE;
Michael Baeuerle, Ditzingen-Heimerdingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
Devices and methods for knock detection and knock control are described, in which, in addition to the customary component parts, the knock-detection circuit has a filter with switchable filter characteristic. The switchover of the filter characteristic, i.e. the shift, for example, of the mid-frequency of the filter, is carried out taking into consideration specifiable quantities or parameters, for instance, as a function of rotational speed. During the switchover of the filter characteristic, i.e. the shift of the mid-frequency, problems could occur in the knock detection; that is why measures are proposed which carry out the knock detection according to a special knock-detection algorithm during a switchover phase lasting a specifiable time.