Patent ID: 6700470
Filing Date: 2004-03-02
Classification: F02P,H01F,Y10T

Abstract:
An ignition apparatus comprising:a central core extending along a main axis; a primary winding disposed about the core; a secondary winding disposed about the core; wherein said primary winding has a first axial length and said secondary winding has second axial length that is less than said first axial length, wherein said secondary winding has a high voltage end configured to be connected to a spark plug and an axially opposite low-voltage end, said high voltage end being proximate a first end of said core, said core having a second end opposite said first end, an extension of said primary winding in axial length being proximate said second end of said core, wherein said primary winding comprises a plurality of layers, preselected ones of said plurality of layers having said first axial length, wherein a remainder of said layers of said primary winding are axially spaced from said low-voltage end of said secondary winding.