Effect

Driven by the timing belt or timing chain, the camshaft drives the valve to open and close at the correct time, and cooperate with the piston to complete the four processes of air intake, compression, work and exhaust. Because the timing belt and timing chain will jump at medium and high speeds, and the timing belt will be stretched and deformed due to the material and force of the belt during long-term use, resulting in inaccurate gas timing. This will cause the vehicle to waste gas, weakness, knocking and other faults. When there are too many jumping teeth, the engine will be damaged by the collision of the valve and the upward piston because the valve is opened too early or closed too late.

In order to keep the timing belt and timing chain at a proper tension, that is, they will not jump due to excessive looseness and will not be damaged due to excessive tension. There is a special tensioning system consisting of a tensioner and a tensioner or Rail composition. The tensioner provides pressure to the belt or chain. The tensioner is in direct contact with the timing belt, and the guide rail is directly in contact with the timing chain. They operate with the belt or chain while exerting the pressure provided by the tensioner on it. , So that they maintain the appropriate degree of tension.The tensioner acts on the timing belt or timing chain of the engine to guide and tighten it so that it is always in the best tightening state. Generally divided into two methods: hydraulic and mechanical, both of which can automatically adjust the tension of the timing belt and timing chain.