SPARK PLUG FOR INTERNAL COMBUSTION ENGINES INCORPORATING A DIODE

摘要

This patent application of Utility Model refers to a spark plug of the type that has a diode positioned between two portions of the core (3), being said diode (2) disposed internally to the ceramic body (4) of the spark plug (1); the diode (2) acts with the purpose of improving the conduction of the electric current that crosses the spark plug and reaches its electrode (9); said spark plug (1) differs from the spark plugs that belong to the state of the art due to the fact that the unit diode (2) is mounted between two conical concave connectors (A) and (B), of which one has a spring (M) incorporated, thus enabling the mounting of diodes (2) of different diameters and lengths; the use of a tubular spacer (E) is optionally provided to enable the use of diodes (2) of different diameters on such way that the diode (2) is kept correctly positioned, centered within the hole of the ceramic insulator (4); this patent application of Utility Model further provides a diode (2′) having two contact ends (C) where at least one of it is shaped as a spring (M′).

主权项

1. “SPARK PLUG FOR INTERNAL COMBUSTION ENGINES INCORPORATING A DIODE”, of the type used to promote the burn of the air/fuel mixture in internal combustion engines, which is indicated by the numerical reference (1) and comprises a core (3), which crosses its ceramic body (4), wherein around the bottom portion (5) of the aforementioned ceramic body (4) is provided the hexagonal terminal (6) that has a head (7) equipped with thread (8), of which the electrode is projected (9); the spark plug (1) has a unit of diode (2) mounted between two portions of the core (3), being said diode (2) disposed internally to the ceramic body (4) of the spark plug (1), which is characterized in that the diode (2) is installed between two conical concave contacts (A) on the portion of the spark plug (1) terminal inserted in the hole of the thermal insulator; and a conical concave contact (B) with spring (M) incorporated.