Sparking voltage detecting device for internal combustion engines

A sparking voltage detecting device for an internal combustion engine having an ignition system having at least one secondary side high-tension cord, said sparking voltage detecting device including a sensor mounted on said secondary side high-tension cord, for detecting sparking voltage generated in said engine, said sensor comprising:

• a main body formed of an insulating material and having at least one through hole formed therein, said high-tension cord being fitted through said through hole in a liquidtight manner;
• at least one conductive member embedded in said main body at a location radially outward of said through hole and spaced from said high-tension cord by a predetermined distance;
• and
• at least one shielding member embedded in said main body at a location outward of said conductive member radially of said through hole.

A sparking voltage detecting device for an internal combustion engine having a plurality of cylinders, and an ignition system having a plurality of secondary side high-tension cords corresponding in number to the number of said cylinders, said sparking voltage detecting device including a sensor mounted on said secondary side high-tension cords, for detecting sparking voltage generated in said engine, said sensor comprising:

• a main body formed of an insulating material and having a plurality of through holes formed therein, said through holes corresponding in number to the number of said cylinders, said high-tension cords being fitted, respectively, through said through holes in a liquidtight manner;
• at least one conductive member embedded in said main body at a location radially outward of said through holes and spaced from said high-tension cords by a predetermined distance;
• and
• at least one shielding member embedded in said main body at a location outward of said conductive member radially of said through holes.

A sparking voltage detecting device for an internal combustion engine having an ignition system having at least one secondary side high-tension cord, said sparking voltage detecting device including a sensor mounted on said secondary side high-tension cord, for detecting sparking voltage generated in said engine, said sensor comprising:

• a main body formed of an insulating material and having at lest one through hole formed therein, said high-tension cord being fitted through said through hole in a liquidtight manner;
• at least one conductive member embedded in said main body at a location radially outward of said through hole and spaced from sad high-tension cord by a predetermined distance;
• and
• at least one insulating member formed of ceramics, said insulating member being embedded in said main body at a location between said through hole and said conductive member.

A sparking voltage detecting device for an internal combustion engine having a plurality of cylinders, and an ignition system having a plurality of secondary side high-tension cords corresponding in number to the number of said cylinders, said sparking voltage detecting device including a sensor mounted on said secondary side high-tension cord, for detecting sparking voltage generated in said engine, said sensor comprising:

• a main body formed of an insulating material and having a plurality of through hoes formed therein, said through holes corresponding in number to the number of said cylinders, said high-tension cords being fitted, respectively, through said through holes in a liquidtight manner;
• at least one conductive member embedded in said main body at a location radially outward of said through holes and spaced from said high-tension cords by a predetermined distance;
• and.
• at least one insulating member formed of ceramics, said insulating member being embedded in said main body at a location between said through holes and said conductive member.