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Camshaft drive

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Camshaft drive

作者: Release Date: 2017-02-16 Author: Click:

Common transmission methods between camshaft and crankshaft include gear transmission, chain transmission and toothed belt transmission. The transmission between the lower camshaft and the middle camshaft and the crankshaft mostly uses a cylindrical timing gear. Generally, only a pair of gears are required from the crankshaft to the camshaft. If the diameter of the transmission gear is too large, an additional middle Idler. In order to smooth the meshing and reduce the working noise, most of the timing gears use helical gears.

Chain drive is common between overhead camshaft and crankshaft, but its working reliability and durability are not as good as gear drive. Toothed belts are widely used in high-speed engines instead of drive chains, but they are still used in some high-power engines. Toothed tape has the characteristics of low working noise, reliable work and low cost. For double overhead camshafts, the exhaust camshaft is generally driven by the crankshaft through timing toothed belt or chain, and the intake camshaft is driven by the exhaust camshaft through a metal chain, or both the intake camshaft and the exhaust camshaft Driven by crankshaft through toothed belt or chain.


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