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:
Dec. 04, 2012
Filed:
Jan. 05, 2009
Tim Gegg, Remseck, DE;
Manuel Dangelmaier, Plochingen, DE;
Andreas Neubauer, Ludwigsburg, DE;
Wolfgang Layher, Besigheim, DE;
Tim Gegg, Remseck, DE;
Manuel Dangelmaier, Plochingen, DE;
Andreas Neubauer, Ludwigsburg, DE;
Wolfgang Layher, Besigheim, DE;
Andreas Stihl AG & Co. KG, Waiblingen, DE;
Abstract
An internal combustion engine () has an ignition device, a device for supplying fuel and a device for detecting the rpm of the engine (). The engine () includes a permissible limit rpm (n) and a control range (A) of the rpm (n) above the limit rpm (n). A method for operating the engine () provides that the rpm of the engine () is limited in the control range (A) because of suppression of the ignition in individual engine cycles wherein the rpm (n) lies above a control rpm (n) lying in the control range (A). In the control range, and to improve the exhaust-gas values, the noncombustion engine cycle ratio (NECR) is adjusted. The NECR indicates the ratio of the number of engine cycles wherein the ignition is suppressed to the total number of ignitions.