Title:
【発明の名称】二重点火コイル―点火装置における高電圧スイッチ
Document Type and Number:
Japanese Patent JPH05507987
Kind Code:
A
Abstract:
PCT No. PCT/DE91/00444 Sec. 371 Date Sep. 30, 1992 Sec. 102(e) Date Sep. 30, 1992 PCT Filed May 27, 1991 PCT Pub. No. WO92/00454 PCT Pub. Date Jan. 9, 1992.The ignition system for an internal combustion engine includes an ignition coil having a primary coil and a secondary coil; a plurality of semiconductor switching elements connected with the secondary coil which change abruptly from a blocking state to a conducting state at a predetermined breakdown voltage corresponding to an ignition voltage, each of the semiconductor switching elements including at least one breakdown diode; an ignition line connected electrically to a higher voltage end of the secondary coil and another ignition line connected electrically to a lower voltage end of the secondary coil, each of the ignition lines being connected via one of the semiconductor switching elements to a spark plug and being of different length, wherein the semiconductor switching element in the one line has a different breakdown voltage than the semiconductor switching element in the other line. Advantageously the shorter ignition line contains the semiconductor switching element with the higher breakdown voltage so that an increased steepening effect can be achieved for the ignition voltages applied to the spark plugs.
Inventors:
Vogel, Manfred
Helden, Werner
Helden, Werner
Application Number:
JP50907491A
Publication Date:
November 11, 1993
Filing Date:
May 27, 1991
Export Citation:
Assignee:
ROBERT BOSCH GMBH
International Classes:
F02P9/00; F02P3/04; F02P15/00; F02P15/08; F02P7/03; (IPC1-7): F02P15/00; F02P3/04
Attorney, Agent or Firm:
Toshio Yano (2 outside)