Patent ID: 6332458
Filing Date: 2001-12-25
Classification: F02D,F02P,H01F,H01T

Abstract:
An individual ignition type ignition coil for use in an engine, comprising a center core, a secondary coil wound on a secondary bobbin and a primary coil wound on a primary bobbin, the core and coils being installed concentrically from an inner side of a coil case in order, said ignition coil being connected directly to a respective spark plug of said engine, whereinan insulation resin is filled up between said secondary bobbin and said center core; anda thickness of said secondary bobbin has an inclined shape such that an inner diameter of said secondary bobbin is formed larger at a potting side of said insulation resin than toward an opposite side of said potting side thereby, in the potting side of the resin between the secondary bobbin and the core, a layer of the resin is formed to hold the center core.