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:
Jun. 12, 2012
Filed:
Nov. 28, 2007
Reinhold Hagel, Pinzberg, DE;
Mehmet Tuna, Fuerth, DE;
Emmanuel Routier, Stuttgart, DE;
Kayhan Goeney, Esslingen, DE;
Reinhold Hagel, Pinzberg, DE;
Mehmet Tuna, Fuerth, DE;
Emmanuel Routier, Stuttgart, DE;
Kayhan Goeney, Esslingen, DE;
Conti Temic microelectronic GmbH, Nuernberg, DE;
Abstract
The invention relates to a method for controlling the operating mode of an internal combustion engine () comprising several cylinders () and an injection system () with one injection unit () per cylinder (). According to said method: a digital measuring signal, which characterizes the combustion of fuel () in the internal combustion engine (), is first determined; said digital measuring signal is then transformed into a frequency range; a misfiring of the ignition is detected using the amplitude information of the transformed measuring signal and if a misfiring has occurred, the injection of the individual cylinders () is deactivated sequentially for a predefined period and for each cylinder the corresponding digital measuring signal that characterizes said cylinder is determined and transformed into the frequency range and a misfiring cylinder () is identified during the evaluation of the transformed measuring signal using the amplitude information. The invention also relates to a device for controlling the operating mode of an internal combustion engine () using a method of this type.