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:
Mar. 25, 2003
Filed:
Mar. 14, 2002
Wolfgang Nehse, Reichling, DE;
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
Abstract
The invention relates to a method for synchronized ignition in an internal combustion engine with a crankshaft sensor and a device for detecting smooth running. The aim of the invention is to provide a method for synchronized ignition which does not require a camshaft sensor. After the engine has started, ignition takes place in all of the upper dead centers in at least one cylinder, the time of ignition being offset by a certain value each time that the crankshaft passes through 720°. The effect of offsetting the time of ignition is determined by the device for detecting the smoothness of running. Ignition is assumed to have occurred in the area of the upper dead center in which the ignition time is offset when the smoothness of running is modified above a predetermined limit value or is assumed to have occurred in the area of the upper dead center in which the ignition time is not offset when the smoothness of running is not modified above a predetermined limit value.