US 4,393,282 A · Electrode for ignition systems

Abstract

The part of the distributor electrode in the breakdown region has a resistance of at least 400 ohms per millimeter. The total resistance of the electrode is in the range of between 0.5 and 1.0 kilo-ohms. The material is a mixture of a resistive ceramic material and a finely dispersed additive of metallic conductivity. Arrangements for creating surface discharge gaps thereby slowing down the sparking process and decreasing interference are also illustrated.

Claims25

Dependent claims

Electrical interference suppressed spark apparatus, paticularly distributor for an internal combustion engine, to provide a spark across a spark gap, comprising

a first electrode (11);
and a second electrode (16) separated from said first electrode by a spark gap, said second electrode comprising a plurality of sections (17, 18, 19) in a direction of propagation of said spark, said plurality of sections including a spark gap section (19) closest to said spark gap, said spark gap section (19) closest to the spark gap having a predetermined resistance per unit length of at least 400 ohms per millimeter in the direction of propagation of said spark.

Dependencies are inferred from the claim text.

Electrode for ignition systems

Life of this patent

Electrode for ignition systems

Life of this patent

Abstract

Claims25