Spark plug

Details Spark plug Spark plug

1998-08-18

2000-06-13

Solis, Erick

Internal-combustion engines

Combustion chamber means having fuel injection only

Combination igniting means and injector

123150, F02P 1300

Patent

active

060736070

ABSTRACT:
A spark plug includes an insulator body provided with a longitudinally-extending through bore. A one-piece, central electrode is secured within the longitudinally-extending through bore, while simultaneously providing an annular zone communicating with a combustion chamber. An earth lower electrode projects diametrically-inward towards the central electrode and is spaced a longitudinally-fixed distance beyond the lower end of the central electrode. A first, non-central longitudinally-extending bore in the insulator body is connected to a fuel metering device for controllably admitting fuel to the combustion chamber. A second, non-central, longitudinally-extending bore in the insulator body is connected between the combustion chamber and an exhaust manifold to exhaust gases from the combustion chamber. A lower-threaded base connects the spark plug to an opening in the combustion chamber.

REFERENCES:
patent: 2391220 (1945-12-01), Beeh
patent: 3195158 (1965-07-01), Candelise
patent: 4699096 (1987-10-01), Phillips
patent: 4864989 (1989-09-01), Markley
patent: 5000135 (1991-03-01), Taguma
patent: 5245959 (1993-09-01), Ringenbach
patent: 5497744 (1996-03-01), Nagaosa et al.
patent: 5715788 (1998-02-01), Tarr et al.
patent: 5730100 (1998-03-01), Bergsten

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