VALVE SYSTEM FOR INTERNAL COMBUSTION ENGINE

PROBLEM TO BE SOLVED: To prevent abrasion about coupling pins connecting oscillating cams and link rods, by improving lubricating performance about the coupling pins and reducing their sliding resistance. SOLUTION: The valve system for internal combustion engines includes a driving shaft mounted wit...

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Bibliographic Details
Main Authors TAKEDA KEISUKE, HARA SEINOSUKE, MIYASATO YOSHIAKI, YAMADA YOSHIHIKO, NAKAMURA MAKOTO, GOTO TETSUAKI
Format Patent
LanguageEnglish
Published 27.02.2001
Edition7
Subjects
BLASTING
CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
ENGINE PLANTS IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
STEAM ENGINES
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To prevent abrasion about coupling pins connecting oscillating cams and link rods, by improving lubricating performance about the coupling pins and reducing their sliding resistance. SOLUTION: The valve system for internal combustion engines includes a driving shaft mounted with a driving cam 15 on the periphery, and oscillating cams 17 supported for oscillating motion on the driving shaft via a sleeve and provided with cam bodies 17a for opening/closing intake valves 12. The oscillating cams 17 have a bracket element integral with one end of the sleeve, and the sleeve has an arc cutout 46 formed in the periphery through a generally straight angle between the oscillating cams 17 and the bracket element. The cutout 46 is directed to a coupling pin 28 connecting one cam body 17a and a link rod 25, so that it faces up to hold lubricating oil therein and store it temporarily when cam noses 21 of the cam bodies 17a are in a fully driven-up oscillation position, and forces the lubricating oil to drop onto the opposed coupling pin 28 and thereabout when the cam noses 21 are in a lowered position.
Bibliography:Application Number: JP19990231008