Outboard motor, and engine thereof

Details Outboard motor, and engine thereof Outboard motor, and engine thereof

B - Operations, Transporting

63

H

B63H 20/00 (2006.01) F01M 11/02 (2006.01) F02B 61/04 (2006.01) F02B 75/00 (2006.01) F02B 75/22 (2006.01) F02F 1/24 (2006.01) F02B 1/04 (2006.01) F02B 75/02 (2006.01) F02B 75/18 (2006.01) F02F 7/00 (2006.01)

Patent

CA 2136138

An outboard motor body case is supported on a swivel shaft through a connecting member. The swivel shaft vertically swingable about a tilting shaft. An engine is mounted at an upper portion of the outboard motor body case, with a crankshaft thereof being directed vertically, and a flywheel is mounted at a lower end of the crankshaft ant disposed between an engine block and the connecting member. A dynamo is mounted within the flywheel, and a starter motor is engaged with a ring gear which is formed around an outer periphery of the flywheel. Thus, since the flywheel having a large weight is mounted at the lower end of the crankshaft, the position of the gravity center of the outboard motor is lowered. Therefore, it is possible to easily perform a tilting-up about the tilting shaft with a small force. Moreover, since the flywheel is mounted on a power taking-off side of the crankshaft, the torsional vibration of the crankshaft can be reduced.

Carter de moteur hors-bord supporté sur un axe pivotant par l'intermédiaire d'un raccord. L'axe pivotant s'articule verticalement autour d'un axe basculant. Un moteur est monté dans la partie supérieure du carter, et un vilebrequin, monté dans un axe vertical et dont l'extrémité inférieure est pourvue d'un volant-moteur, est disposé entre le bloc-moteur et le raccord. Une dynamo est montée à l'intérieur du volant-moteur et un moteur de démarrage est en engagement avec une couronne planétaire formée autour et à la périphérie du volant. Le volant-moteur, d'un poids considérable, est monté à la partie inférieure du vilebrequin, ce qui abaisse le centre de gravité du moteur hors-bord. L'abaissement du centre de gravité a pour effet de faciliter le basculement du moteur hors-bord, qui peut être manipulé avec un minimum de force. De plus, le volant-moteur étant monté côté prise de force du vilebrequin, la vibration de torsion du vilebrequin s'en trouve diminuée.

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