Ignition coil

Patent metadata

Field	Value
Publication number	US-8991371-B2
Application number	US-201213460968-A
Country	US
Kind code	B2
Filing date	May 1, 2012
Priority date	May 1, 2012
Publication date	Mar 31, 2015
Grant date	Mar 31, 2015

Abstract

An ignition coil for an internal combustion engine includes a magnetically-permeable core extending along a core longitudinal axis, the core having a pair of end surfaces on axially-opposite ends thereof. The ignition coil also includes a primary winding disposed outward of the core, a secondary winding disposed outward of the primary winding, and a structure comprising magnetically-permeable steel laminations having a base and a pair of legs, the structure defining a magnetic return path. The core is disposed between the pair of legs such that the core longitudinal axis extends through the legs and the end surfaces face toward the legs and at least one of the end surfaces of the core is spaced apart from a respective one of the legs to define an air gap. The structure is over-molded with an over-molding material such that the over-molding material fills at least a portion of the air gap.

First claim

We claim:

1. An ignition coil for an internal combustion engine, comprising:
a magnetically-permeable core extending along a core longitudinal axis, said core having a pair of end surfaces on axially-opposite ends thereof;
a primary winding disposed outward of said core;
a secondary winding disposed outward of said primary winding; and
a structure comprising magnetically-permeable steel laminations having a base and a pair of legs, said structure defining a magnetic return p…

Assignees

• Skinner Albert A
• Levers Harry O
• Scaff Andre V
• Delphi Tech Inc

Inventors

• Skinner Albert A
• Levers Harry O
• Scaff Andre V

Classifications

• H01F38/12

  Electricity · mapped topic

• H01F27/022 Primary

  Electricity · mapped topic