公开(公告)号：US09816476B2

公开(公告)日：2017-11-14

申请号：US14905425

申请日：2014-07-14

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： Albert A. Skinner ,  Salah Derrouich ,  Frank Lorenz

IPC: F02P3/045 ,  H01F38/12 ,  F02P9/00 ,  F02P3/04 ,  F02P5/15 ,  H01F27/28 ,  H01T15/00 ,  H01T13/50

CPC classification number: F02P9/002 ,  F02P3/0442 ,  F02P3/0456 ,  F02P3/053 ,  F02P5/1502 ,  H01F27/2823 ,  H01F38/12 ,  H01F2003/106 ,  H01T13/50 ,  H01T15/00 ,  Y02T10/46

Abstract: An ignition coil system is configured for use with a spark ignition internal combustion engine. The system includes a first switching circuit electrically connected to the primary coil that provides electrical power to the primary coil. The system includes a second switching circuit connected to the primary coil that is configured to short the terminals of the primary coil after the secondary current has been induced in the secondary coil, whereby the secondary coil induces a current in the primary coil, thereby reducing the secondary current in the secondary wire coil. A controller in communication with the first and second switching circuits is configured to receive a single electronic spark timing (EST) signal and to control the conductive states and the non-conductive states of the first and second switching circuits based on this single EST signal.