Automotive ignition coil having a core with at least one embedded permanent magnet

摘要

In a spark plug ignition assembly for a spark plug, an ignition coil assembly has a steel laminated core, said core having a first core portion and a second core portion, and a primary winding around the first core portion and a secondary winding around the primary winding. A spark plug connecting member is provided for connecting the coil assembly to the spark plug. At least one of the first and second core portions has a slot therein with a magnet located in the slot.

主权项

1. A spark plug ignition assembly for a spark plug, comprising:
an ignition coil assembly comprising a steel laminated core, said core having a first core portion and a second core portion, and a primary winding around the first core portion and a secondary winding around the primary winding; a spark plug connecting member for connecting the coil assembly to the spark plug; at least one of the first and the second core portions having a slot therein with a magnet located in the slot; the first core portion comprising an I-shaped core portion having said primary and secondary windings around it, the second core portion comprising a C-shaped core portion, said C-shaped core portion having first and second legs and an intermediate part connecting and between the first and second legs, end faces of the first and second legs abutting against a side of the I-shaped core portion, and said slot with said magnet being located in the C-shaped core portion; and the C-shaped core portion two legs being widened in a region adjacent said respective end faces and symmetric to one another and said slot with said magnet is located in said intermediate part between the first and second legs and its longitudinal extent running substantially perpendicular to a longitudinal extent of said intermediate part and is centrally located in said intermediate part.