TUNNEL TYPE BEARING DEVICE FOR CRANKSHAFT

PROBLEM TO BE SOLVED: To resolve the drift or inclination of the axis of a bearing box against the crank axis and resolve the hammering noise of a bearing metal by an intermediate journal. SOLUTION: The bearing wall 21 of the crankshaft 8 of a multi-cylinder engine is formed integrally with a crankc...

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Bibliographic Details
Main Authors YOSHIDA KOZO, NAKAMURA TATSUYUKI, NAITO KEITA, TSUJI HIDEMASA, UMEDA YUZO, NAGAHAMA MASAHIRO
Format Patent
LanguageEnglish
Published 26.01.1999
Edition6
Subjects
ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
BEARINGS
BLASTING
COMBUSTION ENGINES
CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES
ELEMENTS OR CRANKSHAFT MECHANISMS
ENGINEERING ELEMENTS AND UNITS
FLEXIBLE SHAFTS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
ROTARY BODIES OTHER THAN GEARING ELEMENTS
SHAFTS
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To resolve the drift or inclination of the axis of a bearing box against the crank axis and resolve the hammering noise of a bearing metal by an intermediate journal. SOLUTION: The bearing wall 21 of the crankshaft 8 of a multi-cylinder engine is formed integrally with a crankcase 2, a tunnel hole 22 inserted with the crankshaft 8 to support it is bored on the bearing wall 21, and a two-piece bearing box 11 pivotally supporting the intermediate journal 8c of the crankshaft 8 is inserted and fixed into the tunnel hole 22. The tunnel hole 22 has a circular arc portion 22a with its axis (q) matched with the crank axis Q on the side opposite to a piston, the bearing box 11 having the same axis (q) is inserted and fixed into the circular arc portion 22a, and the bearing box 11 is fixed by an assembly fixing means 15 regulating the inclination of the axis (q) of the bearing box 11 against the crank axis Q.
Bibliography:Application Number: JP19970175486