DIRECT TYPE INTAKE PORT AND HELICAL TYPE INTAKE PORT OF ENGINE

PROBLEM TO BE SOLVED: To enhance a mixture characteristic of air and fuel by improving a week point of swirl shortage which is a nature of direct-type intake port. SOLUTION: In this intake port, a projection 12 for changing intake air flow direction is projected from a peripheral side surface part 1...

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Bibliographic Details
Main Authors HAGIWARA MASAYUKI, IMAI TAKATOSHI, HATAURA KIYOSHI, SUZUKI HIROSHI, TAKII TADASHI, MIYAZAKI MANABU
Format Patent
LanguageEnglish
Published 26.12.2000
Edition7
Subjects
ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
BLASTING
CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION
COMBUSTION ENGINES
COMBUSTION ENGINES IN GENERAL
CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
INTERNAL-COMBUSTION PISTON ENGINES
LIGHTING
MECHANICAL ENGINEERING
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To enhance a mixture characteristic of air and fuel by improving a week point of swirl shortage which is a nature of direct-type intake port. SOLUTION: In this intake port, a projection 12 for changing intake air flow direction is projected from a peripheral side surface part 11 near a cylinder shaft center 10, among a whole peripheral surface of a bent port part 5 of the direct-type intake port 2. The projection 12 is formed into a shape in which a direction of an intake air flow A is changed from the the peripheral side surface part 11 near the cylinder shaft center 10 to a peripheral side surface part 13 opposite to the peripheral side surface part 11. Further, a projection 15 for changing intake air flow direction is projected from a peripheral side surface part 14 near an upper end surface 9 of a cylinder chamber of the bent port part 5. The projection 15 is formed into a shape which changes the intake air flow A from the peripheral side surface part 14 near the upper end surface 9 of the cylinder chamber to a peripheral side surface part 16 opposite to the peripheral side surface part 14.
Bibliography:Application Number: JP19990168223