Counterbalance mechanism for internal combustion engine
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorToshio Shimada
Life of this patent
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Abstract
An internal combustion engine has a crankshaft, a clutch, and a transmission including a main shaft rotatable by the crankshaft through the clutch and a countershaft rotatable by the main shaft through gears. A counterbalance mechanism includes at least a primary counterweight rotatable in synchronism with the crankshaft, and a hollow shaft rotatably supported concentrically on the main shaft, the primary counterweight being integrally mounted on the hollow shaft, the clutch being corotatably mounted on the hollow shaft and operatively coupled to the crankshaft at the same speed as and in the opposite direction to the crankshaft.
Claims10
A counterbalance mechanism in an internal combustion engine having a crankshaft, a clutch, and a transmission including a main shaft rotatable by the crankshaft through the clutch and a countershaft rotatable by the main shaft through gears, said counterbalance mechanism comprising:
- at least a primary counterweight rotatable in synchronism with the crankshaft;
- a hollow shaft rotatably supported concentrically on the main shaft,
- said primary counterweight being integrally formed with said hollow shaft;
- and
- said clutch being co-rotatably mounted on said hollow shaft and operatively coupled to the crankshaft at the same speed as and in the opposite direction to the crankshaft.
Dependencies are inferred from the claim text.