Technique and spark plug to ignite very lean fuel air mixtures,

Details Technique and spark plug to ignite very lean fuel air mixtures, Technique and spark plug to ignite very lean fuel air mixtures,

1988-03-28

1990-01-09

Nelli, Raymond A.

Internal-combustion engines

Precombustion and main combustion chambers in series

Having combustible mixture forming means

123266, F02B 1908, F02B 2300

Patent

active

048920703

ABSTRACT:
A method and a spark plug construction to ignite very lean fuel air mixtures with the aid of an ignition chamber with separate ignition, which is arranged in the main combustion chamber of an internal combustion engine, connected to the main combustion chamber 20 through transfer channels 21. Transfer channels may be provided which proceed tangentially, whereby rich fuel air admixtures or additional fuel is brought, valve timed, to the area of at least one transfer channel 21 outside the ignition chamber through a supply channel 24. During a compression stroke the very lean mixture in the main combustion chamber is pressed into the ignition chamber 16 through the transfer channels, which results in a very good intermixing with the additional fuel or the admixture due to the turbulent movement through the transfer channels 21 and the long path to the spark gap. This guarantees a very safe ignition.

REFERENCES:
patent: 4061114 (1977-12-01), Christopher
patent: 4072134 (1978-02-01), Noguchi et al.
patent: 4072136 (1978-02-01), Noguchi et al.
patent: 4465031 (1984-08-01), Bamer et al.
patent: 4509476 (1985-04-01), Breuser et al.
patent: 4542724 (1985-09-01), Blais

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