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. 09, 1985
Filed:
Oct. 21, 1982
Walter Mauermann, Stuttgart, DE;
Ingo Dudeck, Weinstadt, DE;
Abstract
A control method and apparatus for combating knocking in internal combustion engines which automatically adapts itself to the internal combustion engine to be controlled and, as a result of the automatic adaptation, is capable of employment, without adjustments, on different model-lines and on the individual examples of the internal combustion engines, within these lines and falling within the permissible scatter-range. Anti-knock control is obtained by means of a technique whereby the control input signal (for example, to retard the ignition timing) is increased while knock-signals are occurring, and is reduced if knock-signals do not occur, whereby, following the occurrence of knock-signals, the threshold value for detection of knock-signals is increased, as long as either the knock-signals do not diminish, in spite of the control input signal having been increased, or whereby, if a defined period has elapsed since the last reduction of the control input signal, and knock-signals are not occurring, the threshold value is reduced, or held constant.