timing chain timing belt is developed to a certain extent the evolution of the product. The main role is to drive the engine valve mechanism, so that the engine intake and exhaust valves opened or closed at the appropriate time to ensure that the engine cylinders to the normal suction and exhaust.
1. The timing chain advantage
With the development of technology and industrial development repairer, timing belt has been replaced by part of the engine of the engine of the chain, with the traditional belt-driven compared drive chain drive system reliability, durability and also save space, the entire system consists of a gear member, and a chain tensioner devices and other components, wherein the hydraulic tensioner can automatically adjust the tensioning force, the chain tension is always as one, and maintenance-free life, which make it the same engine life, not only the security, reliability has been some improvement, the engine will use, maintenance costs a lot of sense.
for all engines, timing belt is absolutely not occur or broken tooth jump, tooth jump phenomenon occurs once if the engine is not working properly, it will appear idle instability, poor acceleration or could not beat the carAnd so on; and if the timing belt breaks, it will immediately turn off the engine, multi-valve engine will also lead to the top of the valve piston top corner, but will seriously damage the engine as a whole.
timing belt made of rubber increases as engine operating time, belts, and other accessories, such as a tension pulley tensioner and water pumps are worn or aged. Therefore, all equipped with a timing belt engine, manufacturers will have strict requirements, periodic replacement of timing belts and accessories within the prescribed period. And the greater strength steel material made of the timing chain can be solved this problem, it is known, the strength of the metal is much larger than the rubber, which makes it also will significantly reduce the degree of deformation, fracture and tooth skipping phenomenon the probability of occurrence is minimal.
for precision instruments such as the engine, each part of the machinery have strict technical and process indicators, which makes the entire assembly process, the operation high quality requirements. Timing chain as an integral part of the core parts of automobiles, of course, also has a certain difficulty in assembly, the timing chain on some engines have several obvious signs, to be used to ensure accuracy while reducing some installations difficulty. .
2 timing chain and timing belt contrast
let’s take a look at several aspects of the timing chain belts than older they all have advantages and disadvantages which: First, for manufacturers timing chain for production costs significantly higher than the timing belt, and because the chain is maintenance-free life, so this part of the latter benefit manufacturers could be reduced. in addition, timing chain compared to skinBand will also have an impact on the engine power. Let us from the consumer point of view, due to the timing belt service life limit, the user’s follow-up costs of keeping a car increases, while the same timing chain and engine life, there is no need to be replaced, of course, without having to pay associated costs.
finally, to compare the advantages and disadvantages of the two materials, the timing system configuration: small timing belt noise, low driving resistance, the drive inertia is small, it is possible to improve the power performance and acceleration performance of the engine, and is easy to replace . But the downside is that easy to aging, the failure rate is high cost, the owner is relatively high. And the timing chain is the advantage of long life, low failure rate, and when the drive is less prone to failure due to the positive lead car broke down, but there are some drawbacks inevitably the same as the chain rotates noise, large transmission resistance, transmission inertia is large, an increase of fuel consumption from a certain perspective, the performance has also been reduced. Although the formal structures of the two materials are some of the advantages and disadvantages of each other there, but on the current trends, the timing chain will be used in the engine more, I believe that with the continuous improvement of the designer section, use the car’s cost will also be lower and lower.