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Title:
FOUR VALVE TYPE INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JPH05179959
Kind Code:
A
Abstract:

PURPOSE: To improve quick ignitability and combustibility of intake mixture, in a four valve type internal combustion engine provided with two intake ports and two exhaust ports against one combustion chamber.

CONSTITUTION: In a combustion chamber 5, a protrudent part 18 to divide the combustion chamber 5 into a first combustion chamber 5a comprising one intake port 6 and one exhaust or 8 and a second combustion chamber 5b comprising the other intake port 7 and the other exhaust port 9 is provided. The underside of the protrudent part 18 is formed in a squish area 10 against the top face of a piston. The one intake port 6 is constituted into a tumble port by which intake mixture from the intake port 6 is given loop-like swirl in the vertical direction. Meanwhile, the other intake port 7 is constituted into a swirl port by which intake mixture from the intake port is given loop-like swirl in the lateral direction.


Inventors:
HASEGAWA KUNIO
Application Number:
JP76292A
Publication Date:
July 20, 1993
Filing Date:
January 07, 1992
Export Citation:
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Assignee:
DAIHATSU MOTOR CO LTD
International Classes:
F02B23/08; F02B31/02; F02F1/42; (IPC1-7): F02B23/08; F02B31/02
Attorney, Agent or Firm:
Akio Ishii (2 outside)



 
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