Patent ID: 6023215
Filing Date: 2000-02-08
Classification: F02P,H01F

Abstract:
An open-magnetic-circuit type engine igniting coil device to be mounted into a cylindrical bore in a cylinder head of an engine, directly attached to an ignition plug therein and secured with a bolt to the cylinder head, which device comprises a coil case provided at its lower open end with a plug cover and containing an inner coil assembly composed of primary and secondary coil-wound bobbins having a rod-like core inserted in a hollow center of said bobbins and potted in the coil case with insulating resin for forming a single solid coil device and which is characterized in that the coil case is provided at its upper end with a damping member made of elastic material, which clamping member is interposed between the coil case and the cylinder head and is provided with a collar interposed for restricting tightening force of the bolt for securing the coil case to the cylinder head.