Balance shaft

（重定向自Shaft balancing）

Valve timing gears on a Ford Taunus V4 engine — the small gear is on the crankshaft, the larger gear is on the camshaft. Since the camshaft gear is twice the circumference of the crankshaft gear, it runs at half the crankshaft RPM. See gear ratio. The small gear left is on the balance shaft.

In piston engine engineering, a balance shaft is an eccentric weighted shaft that offsets vibrations in engine designs that are not inherently balanced. They were first invented and patented by British engineer Frederick W. Lanchester in 1904.

单词	Shaft balancing
释义	Shaft balancing 英语百科 Balance shaft （重定向自Shaft balancing） In piston engine engineering, a balance shaft is an eccentric weighted shaft that offsets vibrations in engine designs that are not inherently balanced. They were first invented and patented by British engineer Frederick W. Lanchester in 1904.
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