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    45.
    发明专利
    未知

    公开(公告)号：DE69934659D1

    公开(公告)日：2007-02-15

    申请号：DE69934659

    申请日：1999-11-08

    Applicant: DENSO CORP

    Inventor： OKUCHI HIROAKI ,  HIRAMATSU HIROMI ,  HORII YASUTOSHI ,  YAMAMOTO NOBORU

    IPC: H05B41/04 ,  H05B41/288 ,  H05B41/38

    Abstract: A shielding sheath covers the output cable which is provided for connecting the circuit unit including a starter transformer (13), and high voltage discharge lamp. A ground connector of the bus bar (23) which is connectable to ground side of the electrical power source, shielding sheath and base (26) are constructed to be grounded at one location under a condition that the circuit unit is accommodated with in the base.

    46.
    发明专利
    未知

    公开(公告)号：FR2862445B1

    公开(公告)日：2006-11-17

    申请号：FR0412038

    申请日：2004-11-12

    Applicant: DENSO CORP

    Inventor： HIRAMATSU HIROMI

    IPC: H01T13/46 ,  H01T13/02 ,  H01T13/22

    Abstract: A spark plug according to the invention includes a tubular metal shell, a cylindrical insulator, a plurality of center electrodes, and a plurality of ground electrodes. The meal shell has an end portion in which a plurality of thick-walled portions and a plurality of thin-walled portions are formed. The insulator is fixed in the metal shell. The center electrodes each are retained within one of a plurality of axial bores in the insulator. The ground electrodes each are joined to one of the thick-walled portions to ensure sufficient strength of the ground electrodes. The thin-walled portions each have an inner surface that is outwardly recessed in an angular range including the intersection of the inner surface with a reference line, thereby securing sufficient air pocket size of the spark plug. Accordingly, the spark plug has a high capability to ignite the air-fuel mixture and sufficient strength of the ground electrodes.

    47.
    发明专利
    未知

    公开(公告)号：DE69931080T2

    公开(公告)日：2006-10-19

    申请号：DE69931080

    申请日：1999-11-08

    Applicant: DENSO CORP

    Inventor： OKUCHI HIROAKI ,  HIRAMATSU HIROMI ,  HORII YASUTOSHI ,  YAMAMOTO NOBORU

    IPC: H05B41/04 ,  H05B41/02 ,  H05B41/288 ,  H05B41/38

    Abstract: A shielding sheath covers the output cable which is provided for connecting the circuit unit including a starter transformer (13), and high voltage discharge lamp. A ground connector of the bus bar (23) which is connectable to ground side of the electrical power source, shielding sheath and base (26) are constructed to be grounded at one location under a condition that the circuit unit is accommodated with in the base.

    48.
    发明专利
    未知

    公开(公告)号：DE69635465D1

    公开(公告)日：2005-12-22

    申请号：DE69635465

    申请日：1996-09-06

    Applicant: DENSO CORP

    Inventor： YAMAMOTO NOBORU ,  YONEIMA KENJI ,  ISHIKAWA MASAMICHI ,  OKUCHI HIROAKI ,  HIRAMATSU HIROMI

    IPC: F21V5/00 ,  G02B6/42 ,  H05B41/288 ,  H05B41/38 ,  H05B41/392 ,  F21V8/00 ,  B60Q1/00

    Abstract: In a discharge lamp device, the electric power supplied to a discharge lamp is controlled in order of first to fourth control regions from the start of lighting of the discharge lamp. In the first control region, the lamp current is held constant until the lamp voltage reaches a first voltage value. In the second control region, the lamp current is reduced so as to have a correlation with a first time constant curve for a constant time after the lamp voltage reaches the first voltage value. In the third control region, the lamp current is reduced so as to have a correlation with a second time constant curve after a lapse of the constant time. The second time constant curve differs from the first time constant curve. In the fourth control region, a control value of the electric power supplied to the discharge lamp is free of a function of a lapse of time from the start of lighting of the discharge lamp, but is a function of at least the lamp voltage and the lamp current, and the electric power supplied to the discharge lamp is controlled by that control value. Through such a control, luminous flux is built up in a short time from the start of the lighting and an occurrence of overshoot or undershoot is minimized to a possible extent.

    49.
    发明专利
    未知

    公开(公告)号：DE102005023458A1

    公开(公告)日：2005-12-15

    申请号：DE102005023458

    申请日：2005-05-20

    Applicant: DENSO CORP

    Inventor： IWAMI ATSUSHI ,  MIWA TETSUYA ,  HIRAMATSU HIROMI ,  MORITA YOSHIKI

    IPC: F02P1/00 ,  F02P3/02 ,  H01F27/06 ,  H01F38/12 ,  H01T13/08 ,  H01T13/44

    Abstract: An ignition device for an internal combustion engine has a spark plug, an ignition coil, a housing and a mounting portion. The spark plug is for discharging a current to ignite an air-fuel mixture in a combustion chamber of the internal combustion engine. The ignition coil is for supplying the current to the spark plug. The housing encloses the spark plug and the ignition coil therein. The housing has a mounting portion to be disposed in a mounting hole provided in a cylinder head of the internal combustion engine. The mounting portion includes a screw portion a non-screw portion. The screw portion is to be screw-fastened to the mounting hole. The non-screw portion is not to be screw-fastened to the mounting hole.

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