System and device for the ignition of an internal combustion eng

Internal-combustion engines – Valve – Rotary

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Details

123 32SP, 123143B, 123148A, 123148E, 123169R, 123169MG, 313231, F02B 2300, F02P 100

Patent

active

040419223

ABSTRACT:
An improved engine for burning a lean air-fuel mixture includes a main combustion chamber into which the air-fuel mixture is introduced and an auxiliary combustion chamber wherein the air-fuel mixture is initially ignited. A spark plug in the auxiliary combustion chamber has central and side electrodes which define a spark gap. A corona discharge is established in an electrostatic field between the central electrode and a field electrode. The ions in the corona discharge collect on fuel particles in the air-fuel mixture so that these particles are electrically charged and deposited on the field electrode, the walls of the auxiliary combustion chamber, and the side electrode. The fuel particles which come toward the central electrode are electrostatically atomized by the corona discharge and accelerated away. As this is occurring, the electrically charged air-fuel mixture accelerates away from the entrance to the auxiliary combustion chamber with a resulting increase in flow rate and turbulence in the auxiliary combustion chamber. Upon establishment of an electrical arc across the spark gap, the rich air-fuel mixture in the auxiliary combustion chamber is ignited and the resultant flame is directed by the entrance passageway or nozzle into the main chamber in such a manner as to insure ignition and complete burning of the relatively lean mixture in the main chamber during a comparatively longer while.

REFERENCES:
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patent: 2866447 (1958-12-01), Kaehni
patent: 2866839 (1958-12-01), Kaehni
patent: 3019276 (1962-01-01), Harlow
patent: 3149620 (1964-09-01), Cataldo
patent: 3613653 (1971-10-01), Irvin et al.
patent: 3776212 (1973-12-01), Karlowitz
patent: 3842818 (1974-10-01), Cowell et al.
patent: 3842819 (1974-10-01), Atkins
patent: 3921605 (1975-11-01), Wyczalek

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