2. The belt is an important part of the engine valve system. Through the connection with the crankshaft, the accuracy of intake and exhaust time is guaranteed under a certain transmission ratio. Using belt instead of gear transmission has low noise and accurate transmission.
3. The timing belt is used to keep the piston stroke (up and down movement), the valve opening and closing (time) and the ignition sequence (time) when the engine is running. Under the connection of "timing", it is necessary to keep "synchronous" operation at all times;
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