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. 16, 2025
Filed:
Oct. 01, 2021
Borgwarner Luxembourg Automotive Systems S.a., Bascharage, LU;
Frank Lorenz, Trier, DE;
BORGWARNER LUXEMBOURG AUTOMOTIVE SYSTEMS S.A., Bascharage, LU;
Abstract
A multi-charge ignition system including a spark plug control unit () adapted to control at least two coil stages so as to successively energise and de-energise said coil stage(s) to provide a current to a spark plug, said two stages comprising a first transformer (T) including a first primary winding (L) inductively coupled to a first secondary winding (L); a second transformer (T) including a second primary winding (L) inductively coupled to a second secondary winding (L); a first switch Qelectrically connected between the low side of the first primary winding Land the low side/earth, a second switch Qhaving a connection to the low side of the second primary winding L; and including a first diode Delectrically connected between the low side of said first secondary winding Land ground, and a second diode Dconnected to a point between the low side of said second secondary winding Land ground and, including means to measure the voltage at a first connection point () between the first switch and the low side of Land/or the voltage at a second connection () point between the second switch and the low side of L; and means to control the operation of the system dependent upon said measured voltages.