Ignition system and spark plug for multiple ignition in an inter

Internal-combustion engines – Combustion chamber having multiple spark gaps

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123169C, F02P 1502

Patent

active

051017830

ABSTRACT:
An ignition system in an internal combustion engine having a cylinder housing with an air or water cooled region achieves multiple ignition. The ignition system includes at least a pair of spark plugs electrically connected in series and including a first spark plug mounted in the cylinder housing while being isolated electrically therefrom and a second spark plug directly screwed into a cylinder head of the cylinder housing. The first spark plug is mounted within the air or water cooled region of the cylinder housing, thereby maintaining such spark plug at a relatively constant temperature, and avoiding the problem of the two spark plugs being subjected to different thermal stresses.

REFERENCES:
patent: 1235993 (1917-08-01), Miller
patent: 1962078 (1934-06-01), Kegresse
patent: 1962079 (1934-06-01), Kegresse
patent: 2025202 (1935-12-01), Harper
patent: 2050688 (1936-08-01), Barkeij
patent: 4625682 (1986-12-01), Dietrich et al.

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