Electric lamp and discharge devices – Spark plugs – Shaped electrode chamber – insulator end – shell skirt – baffle...
Patent
1975-07-21
1977-06-07
Rolinec, Rudolph V.
Electric lamp and discharge devices
Spark plugs
Shaped electrode chamber, insulator end, shell skirt, baffle...
313141, 313138, H01T 1320
Patent
active
040285766
ABSTRACT:
A spark plug having a cylindrical rod-shaped high voltage electrode and a metal sleeve press-fitted on the main body of the plug concentrically surrounding the electrode and having an inwardly projecting annular throat rib with a cylindrical inner surface concentrically completely surrounding the electrode and defining an annular firing space. The bottom end of the electrode extends down to at least the bottom of the cylindrical throat inner surface. Above the throat rib there is thus defined a resonating acoustical cavity, with the dimensions of the parts being such that the acoustic fundamental frequency is above ten thousand Hertz. The metal sleeve has an annular shoulder spaced from the bottom rim of the spark plug body to define an annular recess serving to induce high-multiple harmonics in the acoustic wave generated by the resonating cavity system. The annular bottom mouth of the metal sleeve is arcuately curved in a radial direction and flares downwardly and outwardly away from the annular firing space. The assembly serves to accelerate the combustion process at the instant of ignition and also generates high frequency acoustic vibrations which cavitate all the liquid fuel particles admitted into the associated cylinder to thereby increase the combustion efficiency.
REFERENCES:
patent: 3800179 (1974-03-01), Louzecky
patent: 3892991 (1975-07-01), Joslyn
Hostetter Darwin R.
Rolinec Rudolph V.
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