公开(公告)号：US09812248B2

公开(公告)日：2017-11-07

申请号：US14739094

申请日：2015-06-15

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： Albert A. Skinner ,  Colin Hamer ,  Harry O. Levers, Jr.

IPC: H01F27/29 ,  H01F27/32 ,  H01F38/12 ,  H01F5/02

CPC classification number: H01F27/325 ,  H01F27/29 ,  H01F38/12 ,  H01F2005/025

Abstract: An ignition coil for delivering a spark-generating current to a spark plug includes a magnetically-permeable core; a primary winding disposed outward of the core; and a secondary winding radially surrounding the primary winding and inductively coupled to the primary winding, the secondary winding having a low-voltage end and a high-voltage end. The secondary winding includes a secondary winding first section proximal to the low-voltage end and having a first thickness. The secondary winding also includes a secondary winding second section proximal to the high-voltage end and having a second thickness that is less than the first thickness of the secondary winding first section.