Title: Internal combustion engine having main and auxiliary combustion chambers

Abstract: Herein disclosed is an automotive spark-ignition valve-in-head internal combustion engine of the type which has main and auxiliary combustion chambers wherein combustion is initiated in the auxiliary combustion chamber and the resultant flame squirts into the main combustion chamber through a flame passageway whereby the flame fronts radiates out throughout the main combustion chamber from the outlet end of the flame passageway. The outlet end of the flame passageway is located about a "small-clearance-volume" portion of the main combustion chamber so that the flame fronts travel from the small-clearance-volume portion toward a "major-clearance-volume" portion. The small-clearance-volume portion largely corresponds to a squish-quench area in a combustion chamber of the turbulence type such as the wedge combustion chamber.

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Inventors: Tsutsumi, Saburo (Yokohama, JP)

Application Number: 933906
Filing Date: 1978-08-15
Publication_date: 1979-07-10
Assignee: Nissan Motor Company, Limited (Yokohama, JP)
Primary Class(es): 123/256 123/255, 123/262, 123/279, 123/286
Other Classes:
US Patent Ref:

2242990	May, 1941	Brown	123/75.
3915127	Oct, 1975	Guadalajara de la Fuente	123/32.
3976038	Aug, 1976	Stahl	123/32.

Other Refs: 909930

May, 1946	FR

Primary Examiner: Myhre, Charles J.
Assistant Examiner: Argenbright, Tony M.
Attorney: