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Title:
COMBUSTION CHAMBER IN SPARK IGNITION SYSTEM INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JPS5514948
Kind Code:
A
Abstract:

PURPOSE: To prevent knocking in high compression ratio by providing a sub-chamber for cooling a portion of mixture gas in a position spaced farthest from an ignition source for combustible mixture gas filling a combustion chamber.

CONSTITUTION: Fuel in a combustion chamber 4 formed between the top surface 2a of piston and the inner wall surface 3a of cylinder head is ignited by an ignition plug 5 in the end of compression stroke to be propagated approximately in the form of sphere centering around an ignition plug electrode 5. As pressure in the combustion chamber 4 is raised, mixture gas spaced from the ignition plug 5 is cooled through a throttle portion 11 in a sub-chamber 10 so that it is prevented from self-ignition. On the other hand, a portion of mixture gas enters the sub-chamber 10 so that the mixture gas has neither so high pressure, self-ignition nor knocking in the combustion chamber 4.


Inventors:
UMEHANA TOYOICHI
KATOU TAKASHI
Application Number:
JP1978000087664
Publication Date:
February 01, 1980
Filing Date:
July 20, 1978
Export Citation:
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Assignee:
TOYOTA MOTOR CO LTD
International Classes:
F02B23/08; (IPC1-7): F02B23/08



 
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