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. 15, 2007
Filed:
Jun. 14, 2003
Reinhold Hagel, Pinzberg, DE;
Stephan Krell, Schwabach, DE;
Peter Schimmelpfennig, Erlangen, DE;
Mehmet Tuna, Fuerth, DE;
Reinhold Hagel, Pinzberg, DE;
Stephan Krell, Schwabach, DE;
Peter Schimmelpfennig, Erlangen, DE;
Mehmet Tuna, Fuerth, DE;
Conti Temic microelectronic GmbH, Nuremberg, DE;
Abstract
Combustion failures of an internal combustion engine are controlled in closed loop fashion by sampling an engine r.p.m. to obtain a speed signal. The speed signal is subjected to a Hartley-Transformation to obtain angular frequencies or engine orders which are further processed to identify the cylinder which had a combustion failure and thereby reduced an actual engine power output compared to a rated power output. A power output correcting signal is produced and supplied to the engine. The system for performing these steps includes at least a speed signal sampler, a frequency analyzer to perform the Hartley-Transformation, a cylinder identifier or classifier and a controller which supplies the closed loop control signal to the engine.