Anti-pollution spark plug

Details Anti-pollution spark plug Anti-pollution spark plug

1975-09-04

1977-03-29

Rolinec, Rudolph V.

Electric lamp and discharge devices

Spark plugs

Shaped electrode chamber, insulator end, shell skirt, baffle...

313118, H01T 1320

Patent

active

040151611

ABSTRACT:
An anti-pollution spark plug is disclosed having a storage chamber contained in the body portion of the metal shell for receiving -- via longitudinal passages contained in the externally threaded reduced portion of the metal shell -- unburnt hydrocarbons from the cylinder during the compression stroke of the engine. During the subsequent expansion stroke following combustion, the unburnt hydrocarbons are returned to the cylinder for mixing (at a temperature of at least 2200.degree. Rankine) with the oxides of nitrogen having an excess concentration relative to an equilibrium value defined by the pressure, temperature and composition parameters of the products of combustion, thereby to reduce the oxides of nitrogen to the equilibrium value.

REFERENCES:
patent: 1429017 (1922-09-01), Cartmill
patent: 2608186 (1952-08-01), Hudson

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