Timing Belt Tensioner

As you know, the Timing Belt Tensioner is a belt tensioning device used in automobile transmission system. It is an important part of the car, which is used to adjust the timing of the belt tightness. It can make the car run more smoothly, reduce the noise and prevent the car from slipping.

Tensioner is mainly composed of a fixed shell, a tensioning arm, a wheel body, a torsion spring, a rolling bearing and a spring sleeve, etc. It can automatically adjust the tensioning force according to the different degree of belt tightness, so that the transmission system is stable, safe and reliable.

What is the timing belt tensioner’s operation principle? Driven by the timing belt, the camshaft drives the valve to open and close at the correct time, and then the piston completes the four processes of intake, compression, work and exhaust.

Because when the timing belt is running with the middle or high speed, it will happen to beat. More, in long-term use, the timing belt will be elongated, deformation and jump teeth due to the raw material and the strength. Resulting in inaccurate valve timing, thus cause the vehicle fuel costs, weak knock and other faults. When over jumpers, they can damage the engine by causing the valves to collide with the ascending pistons due to the valves open too early or close too late. In order to maintain the appropriate tightening degree of the timing belt, that is to say, not due to too loose and jump teeth , and not due to too tight damage, there is a special tightening system, which is composed of a tightening device and tightening wheel or guide rail. The tensioner provides the specified pressure to the belt; the tensioner wheel is contacting with the timing belt directly, and then the pressure provided by the tension applied to them while the belt is running, so that they maintain the appropriate degree of tensioning.

What are the advantages and disadvantages between timing belt and timing chain?  Regard to the cost of production, timing belt is much lower than timing chain for the manufactory but will be high cost for the consumer as the short lifetime of the timing belt. For the materials and the construction system on the timing belt, low noise, low transmission resistance, low transmission inertia, which can improve the power and the acceleration performance of the engine, also can be easily replaced. However, short lifetime and high fault rate for the timing belt, it need to replace within 6~10 kilometer. For timing chain, it can be keep the lifetime as the engine with a lowest fault rate. Its worthy to be a great benefit to the car owner. But, unavoidably, high noise, high transmission resistance and high transmission inertia will be increased the fuel consumption and slowed down the performance. In addition, it is worth noting that the function of the tensioner is to adjust the tightness of the timing belt. It is easy to wear parts, generally with the timing belt change, so as not to worry about. If you’re looking to replace the timing belt tensioner for your car, you should opt for the best.