Balance system for single cylinder engine

F - Mech Eng,Light,Heat,Weapons – 16 – F

Patent

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F16F 15/26 (2006.01) F16F 15/28 (2006.01)

Patent

CA 2471937

A balance system (500) and method for balancing piston forces with a single cylinder internal combustion engine (100) are disclosed. The balance system (500) includes a crankshaft (220), a counterbalance assembly (445) and a groove (610). The crankshaft (220) includes a crankshaft portion (510), a crank arm (530), a crank pin (520), and an eccentric flange (550) adjacent to the crank arm (530). The counterbalance assembly (445) has a counterbalancing mass portion (570) and a coupling arm (580) that are fixed with respect to one another, and a pin (600) that protrudes from a side of the counterbalancing mass portion (570). The eccentric flange (550) supports the coupling arm (530). The groove (610) is capable of receiving the pin (600); where the pin (600) is capable of sliding along the groove (610) and also rotating within groove (610), so that the counterbalance assembly (445) is capable of rotating while moving toward and away from the crankshaft (220).

L'invention concerne un système d'équilibrage (500) et un procédé permettant d'équilibrer les forces de piston dans un moteur à combustion interne monocylindrique (100). Ce système d'équilibrage (500) comprend un vilebrequin (220), un ensemble de contre-équilibrage (445) et une rainure (610). Le vilebrequin (220) comprend une partie vilebrequin (510), un bras de manivelle (530), un maneton (520), et un flasque excentrique (550) adjacent au bras de manivelle (530). L'ensemble de contre-équilibrage (445) possède une partie masse de contre-équilibrage (570) et un bras de couplage (580) fixes l'un par rapport à l'autre, ainsi qu'un axe (600) en saillie sur un des côté de la partie masse de contre-équilibrage (570). Le flasque excentrique (550) soutient le bras de couplage (530). L'axe (600) peut être logé dans la rainure (610), cet axe (600) étant capable de coulisser le long de la rainure (610) ainsi que de tourner dans la rainure (610), de façon que l'ensemble de contre-équilibrage (445) soit capable de tourner lorsqu'il se déplace en direction du vilebrequin (220) ou loin de ce dernier.

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