Friction minimized crank-drive

The present invention relates to a crank-drive (1) of an internal combustion machine with a crank-shaft (2) having at least one main bearing journal (3) with a surface (4) for supporting the crank-shaft (2) in a crank-housing and having at least one pin bearing journal (5) with a surface (6) for con...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	DE SOUZA RODRIGUES, ALEX, LUIS ANTONIO, FONSECA GALLI, STUANI ALVES, DIOGO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BEARINGS BLASTING CYLINDERS 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 PISTONS ROTARY BODIES OTHER THAN GEARING ELEMENTS SEALINGS SHAFTS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The present invention relates to a crank-drive (1) of an internal combustion machine with a crank-shaft (2) having at least one main bearing journal (3) with a surface (4) for supporting the crank-shaft (2) in a crank-housing and having at least one pin bearing journal (5) with a surface (6) for connecting a connecting rod (7) to the crank-shaft (2), and with a piston (8) having a piston bearing journal (9) with a surface (10) for connecting the piston (8) to the connecting rod (7). According to the invention at least one of the surfaces (4, 6, 10) features at least one recess area (11) extending in a circumferential direction of the surfaces (4, 6, 10) over a circumferential angle (±1, ±2) in a range from 20° to 120°.