DOUBLE SUCTION PORT TYPE SUCTION DEVICE FOR INTERNAL COMBUSTION ENGINE

PURPOSE:To improve a swirl and the extent of volumetric efficiency, by limiting one suction port of an engine provided with two suction valves at each cylinder to only helical suction, while setting the other port down to a helical port performing partial direct suction, and making an axis connectin...

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Bibliographic Details
Main Authors SAKANO KENJI, HATAURA KIYOSHI, IKEJIMA TETSUO, AKEDA MASAHIRO
Format Patent
LanguageEnglish
Published 27.10.1986
Edition4
Subjects
ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
BLASTING
COMBUSTION ENGINES
COMBUSTION ENGINES IN GENERAL
CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
INTERNAL-COMBUSTION PISTON ENGINES
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
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Summary:PURPOSE:To improve a swirl and the extent of volumetric efficiency, by limiting one suction port of an engine provided with two suction valves at each cylinder to only helical suction, while setting the other port down to a helical port performing partial direct suction, and making an axis connecting both suction holes parallel with a cam axis. CONSTITUTION:One port 2 in two suction ports 2 and 3 of an engine provided with two suction valves at each cylinder is set down to a pure helical port having only a suction gas swirl component out of a suction hole 11, and the other port 3 is set down to a partial helical port in which suction air out of a suction hole 12 has a partial swirl component and another part has a direct component. An axis connecting both these suction holes 11 and 12 is set up so as to parallel an axis S of a can shaft. At the time of low speed, suction takes place from only the port 11, forming a strong swirl but at the time of high speed, a strong swirl and suction excellent in volumetric efficiency are carried out through both these ports.
Bibliography:Application Number: JP19850080985