中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

5 records (took 0.021 seconds)

    SPARK PLUG FOR INTERNAL COMBUSTION ENGINE HAVING BETTER SELF-CLEANING FUNCTION
    1.
    发明专利
    SPARK PLUG FOR INTERNAL COMBUSTION ENGINE HAVING BETTER SELF-CLEANING FUNCTION 未知

    公开(公告)号：CA2291351C

    公开(公告)日：2004-03-16

    申请号：CA2291351

    申请日：1999-12-01

    Applicant: DENSO CORP

    Inventor： YATOU MAKOTO ,  ISHINO YASUTAKE ,  OSAMURA HIRONORI

    IPC: H01T13/14 ,  H01T13/39 ,  H01T13/46 ,  H01T13/52 ,  H01T21/02 ,  H01T13/20

    Abstract: In a spark plug having a center electrode, first and second ground electrodes, an insulator and a metal housing, a first discharge gap is constituted between a front end of the center electrode and a front side of the first ground electrode and a second discharge gap is constituted between a front end of the second electrode and a front side of the center electrode. Respective dimensional relationships of A, B, C, H, F and L1 are defined where A is a distance of the first discharge gap, B is a shortest distance between the front end of the second ground electrode and the insulator, C is an axial length from a leading end of the metal housing and a front end of the insulator, H is an axial length from the front end of the insulator and the front end of the center electrode, F is an axial length from the front end of the insulator to the front end edge of the second electrode and L1 is a shortest axial length from the leading end of the metal housing to the front end of the second ground electrode.

    SPARK PLUG FOR INTERNAL COMBUSTION ENGINE HAVING BETTER SELF-CLEANING FUNCTION
    5.
    发明专利
    SPARK PLUG FOR INTERNAL COMBUSTION ENGINE HAVING BETTER SELF-CLEANING FUNCTION 未知

    公开(公告)号：CA2291351A1

    公开(公告)日：2000-06-04

    申请号：CA2291351

    申请日：1999-12-01

    Applicant: DENSO CORP

    Inventor： ISHINO YASUTAKE ,  OSAMURA HIRONORI ,  YATOU MAKOTO

    IPC: H01T13/14 ,  H01T13/39 ,  H01T13/46 ,  H01T13/52 ,  H01T21/02 ,  H01T13/20

    Abstract: In a spark plug having a center electrode, first and second ground electrodes, an insulator and a metal housing, a first discharge gap is constituted between a front end of the center electrode and a front side of the first ground electrode and a second discharge gap is constituted between a front end of the second electrode and a front side of the center electrode. Respective dimensional relationships of A, B, C, H, F and L1 are defined where A is a distance of the first discharge gap, B is a shortest distance between the front end of the second ground electrode and the insulator, C is an axial length from a leading end of the metal housing and a front end of the insulator, H is an axial length from the front end of the insulator and the front end of the center electrode, F is an axial length from the front end of the insulator to the front end edge of the second electrode and L1 is a shortest axial length from the leading end of the metal housing to the front end of the second ground electrode.

Patent Agency Ranking