What is the car timing chain tensioner
Automotive timing chain tensioner is an important part installed on the automobile engine, its main function is to guide and tighten the timing chain, to ensure that it is always in the best tensioning state. The timing chain is responsible for driving the valve to open and close on time in the engine, and cooperating with the piston to complete the four processes of intake, compression, work and exhaust. Because the timing chain will jump when running at medium and high speed, long-term use will also cause the valve timing to be inaccurate because of the material and the tensile deformation of the force, resulting in increased fuel consumption of the vehicle, insufficient power, knocking and other problems. In severe cases, the valve and up piston may collide and damage the engine .
In order to solve these problems, the timing chain tensioner automatically adjusts the tension of the timing chain through oil pressure and mechanical methods to ensure that it will not be too loose and beat, detoothed, and will not be damaged by too tight. Timing chain tensioner is usually divided into hydraulic and mechanical two types, they can automatically adjust the timing chain tension, to ensure the normal operation of the engine .
In addition, the material and use environment of the timing chain will also affect its life. For example, under the operation of a turbocharged engine for a long time and high load, the timing chain may become longer due to wear, resulting in chain pin wear, chain elongation and other problems. Therefore, the owner needs to consider replacing the timing chain and tensioner after the vehicle has been used for a certain number of years or miles.
The main role of the timing chain tensioner assembly is to keep the chain with the appropriate tension during transmission, thereby avoiding chain slip-offs, skipping teeth or falling off, while reducing sprocket and chain wear. By means of an automatic adjustment mechanism, the tensioner ensures that the timing chain is always in the optimal tightening condition, which is essential for the proper operation of the engine.
The timing chain tensioner assembly is usually divided into hydraulic and mechanical two ways. The hydraulic tensioner automatically adjusts the tension force through the hydraulic system, while the mechanical tensioner relies on springs or other elastic components to achieve automatic rebound. These designs allow the tensioner to maintain a stable tension under different operating conditions, thus extending the service life of the chain and sprocket.
In addition, the timing chain is also responsible for driving the valve mechanism of the engine to ensure that the intake and exhaust valves of the engine are opened and closed at the appropriate time to ensure the normal operation of the engine cylinder. In some models, the timing chain also takes on the task of driving the water pump.
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