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:
Sep. 13, 2016
Filed:
Aug. 06, 2014
Borgwarner Ludwigsburg Gmbh, Ludwigsburg, DE;
Torsten Schremmer, Ludwigsburg, DE;
BorgWarner Ludwigsburg GmbH, Ludwigsburg, DE;
Abstract
A corona ignition system that can be operated with relatively low expenditure in the vicinity of its resonant frequency. For each ignition, impedance and frequency values are stored in a data structure and are allocated to a respective voltage value. The data structure is complemented by an adjustment variable whose value specifies whether the present frequency value of the present engine cycle has been classified as too high or too low. The value of the adjustment variable is determined anew in each engine cycle. To that end, a comparison is made between a present frequency value with an earlier frequency value and a present impedance value with an earlier impedance value. Based upon the comparison, a value can be assigned to the adjustment value to cause a lower or higher frequency value of the corona discharge in the next cycle.