Crankshaft

A crankshaft includes a plurality of journals, a plurality of pins, and a plurality of crank arms. The journals are coaxially disposed with the rotational center of the crankshaft. The pins are decentered with respect to the journals. Each of the crank arms is disposed between one journal and one pi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Hwang, Sam Soo, Yabuno, Kunihiro, Tamura, Kenji, Nogami, Hiroshi, Kimura, Yukihiko
Format:	Patent
Sprache:	eng
Schlagworte:	BEARINGS BLASTING ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A crankshaft includes a plurality of journals, a plurality of pins, and a plurality of crank arms. The journals are coaxially disposed with the rotational center of the crankshaft. The pins are decentered with respect to the journals. Each of the crank arms is disposed between one journal and one pin to join the one journal with the one pin. One or more of the crank arms integrally include a counterweight. The counterweight includes two side surfaces. An added layer of a material different from that of a crankshaft body is provided on each of side surfaces of the counterweight. When the Young's modulus of the added layer is E and the Young's modulus of the material of the crankshaft body is E0, E/E0 is 0.2 to 0.4.