公开(公告)号：EP2371042A4

公开(公告)日：2017-02-15

申请号：EP09830918

申请日：2009-11-30

Applicant: DELPHI TECH INC

Inventor： SKINNER ALBERT ANTHONY ,  WOLF EDGARD ,  HAMER COLIN ,  SCAFF ANDRE V

IPC: H01F38/12 ,  F02P3/04 ,  H01F1/24 ,  H01F3/14 ,  H01F27/02 ,  H01F27/26 ,  H01F27/32 ,  H01R27/02

CPC classification number: H01F38/12 ,  F02P3/0407 ,  H01F1/24 ,  H01F3/14 ,  H01F27/022 ,  H01F27/263 ,  H01F27/324

Abstract: An ignition apparatus includes a cylindrical core made from magnetically-permeable material and a C-shaped magnetic return path structure that is made from a stack of silicon steel laminations. A tightly controlled air gap is provided between one leg of the C-shaped structure and an end face of the core, forming a magnetic circuit having a high magnetic permeability, which overall reduces the number of primary winding turns needed, thereby reducing the amount of copper wire. In addition, the circular cross-section of the core reduces the mean length per turn (MLT) of the primary winding because the primary winding can be wound directly on the core, which in turn also reduces the MLT of the secondary winding. The reduced MLT also reduces the amount of copper wire. The structure may be replaced using a magnetically-permeable, U-shaped shield.

Abstract translation: 点火装置包括由导磁材料制成的圆柱形芯和由一叠硅钢叠层制成的C形磁返回路径结构。 在C形结构的一条腿和芯的端面之间设置紧密控制的气隙，形成具有高磁导率的磁路，这总体上减少了所需的初级匝数，从而减少了 铜线。 此外，由于初级绕组可以直接缠绕在芯上，芯的圆形横截面减小了初级绕组的平均长度（MLT），这又降低了次级绕组的MLT。 减少的MLT也减少了铜线的数量。 该结构可以使用磁性可渗透的U形屏蔽来代替。