1
What is?
It is connected to the positive of the crankshaft when the engine head wheel, together with a certain gear ratio to ensure accurate intake and exhaust time.
2
role
to know the chain of positive use, you first need to understand the working process launched . The working of the engine includes four main steps: intake, compression, power and exhaust. Although it looks simple, but in fact, during engine operation is very complex, it is the timing of each step to be engaged with the piston, the valve motion and position of the piston and the intake and exhaust lift coordinated with each other. And the timing chain on engine which plays a role of “bridge”, the kinetic energy is transmitted to the corresponding driven parts of the crankshaft and at different steps of the timing of the piston part, a valve, etc. held in the correct position and then make normal engine operation.
3
Characteristics
As technology advances and the level of industrial development repairer, part of the engine the timing belt has been replaced by the engine of the chain, compared with the conventional driving belt, the drive chain drive system reliability, durability and also save space, the entire system by a gear, a chain and up member tightening device and other components, wherein the hydraulic tensioner automatically adjustable tensioning force, the chain tension consistently, and maintenance-free life, whichOn it with the same engine life, not only the security, reliability has been some improvement, the engine will use, maintenance costs a lot. However, when compared to conventional belt material, the metal material being noisy chain, and the inertia and resistance of the transmission is large, the fuel consumption increases to some extent, a slight decrease in engine performance.