Patent ID: 9117585
Filing Date: 2015-08-25
Classification: F02P,H01F

Abstract:
1. An ignition coil for delivering a spark-generating current to a spark plug; said ignition coil comprising: a magnetically-permeable core; a primary winding disposed outward of said core; and a secondary winding disposed outward of said primary winding and inductively coupled to said primary winding, said secondary winding having a left secondary winding section wound clockwise around said primary winding and a right secondary winding section wound counterclockwise around said primary winding; wherein said left secondary winding section has i) a first left winding end distal from said right secondary winding section and ii) a second left winding end that is proximal to said right secondary winding section, said second left winding end having a greater electrical potential in use than said first left winding end; wherein said right secondary winding section has i) a first right winding end distal from said left secondary winding section and ii) a second right winding end that is proximal to said left secondary winding section, said second right winding end having a greater electrical potential in use than said first right winding end; and wherein said second left winding end and said second right winding end are connected to a terminal which delivers said spark-generating current to said spark plug.