The difference between timing chains and timing belts

With the continuous progress of car manufacturing technology and industrial development, the timing belt of some engines has been replaced by the engine chain. Compared with traditional belt drive, the chain drive method has reliable transmission, good durability, and can also save space. The entire system is composed of components such as gears, chain bars, and tensioning devices. The hydraulic tensioner can automatically adjust the tensioning force, making the chain tensioning force consistent and maintenance free for life. This makes it have the same lifespan as the engine, not only improving safety and reliability, but also reducing the cost of engine use and maintenance. It can be said to kill two birds with one stone.

For all engines, the timing belt must not jump or break. If a jump occurs, the engine cannot function properly, leading to unstable idling, poor acceleration, or inability to start the vehicle; If the timing belt breaks, the engine will immediately shut down, and multi valve engines can also cause the piston to bend the top valve, which can seriously damage the overall engine.

The timing belt made of rubber material will wear or age with the increase of engine working time, as well as other accessories such as tensioner, tensioner, and water pump. Therefore, any engine equipped with a timing belt will have strict requirements from the manufacturer to regularly replace the timing belt and accessories within the specified period. The timing chain made of high-strength steel can easily solve this problem. As is well known, the strength of metal is much greater than that of rubber, which greatly reduces its deformation degree, and the probability of tooth jumping and fracture is also very small.

For precision instruments like engines, each mechanical component has strict technical and process indicators, which makes high demands on operational quality throughout the entire assembly process. As an indispensable component of the core components of a car, the timing chain also has certain assembly difficulties. Some engines have several obvious markings on the timing chain to ensure accuracy while reducing some installation difficulties.