What is a car torsional shock absorber
Automobile torsional shock absorber is a device used to reduce torsional vibration in the transmission system. It is mainly installed between the engine and the transmission or on the driven plate of the clutch. By optimizing the structural design and material selection, it reduces the vibration amplitude and extends the service life of components. The following are its core points:
Youdaoplaceholder0 Basic functions
Youdaoplaceholder0 Reduce the natural frequency of torsional vibration : By adjusting the torsional stiffness of the transmission system (such as using elastic elements), the natural frequency of the transmission system can avoid the resonance area caused by the excitation of the main harmonic of the engine torque.
Youdaoplaceholder0 Enhance damping effect : Utilize damping elements (such as rubber layers or friction plates) to consume vibration energy and suppress transient torsional vibration and impact loads.
Youdaoplaceholder0 Reduce noise and shock : Eliminate the torsional vibration noise of the clutch and transmission at idle speed, and improve the smoothness of clutch engagement.
Youdaoplaceholder0 structure type
Youdaoplaceholder0 engine crankshaft torsional shock absorber : It adopts a composite structure of rubber rings and metal hubs (such as Chery's patented design), increasing the contact area and optimizing the vibration absorption effect through annular protrusions.
Youdaoplaceholder0 clutch driven disc torsion shock absorber : Composed of elastic elements (such as wave springs) and damping elements (such as damping plates), it is divided into two levels of structure: pre-vibration reduction and main vibration reduction to meet the requirements of different working conditions.
Youdaoplaceholder0 working principle
Youdaoplaceholder0 Energy conversion mechanism : When the transmission system generates torsional vibration, elastic elements (such as rubber or springs) absorb energy through deformation; The damping element consumes vibration energy through friction and converts it into heat energy for release.
Youdaoplaceholder0 Dynamic balance regulation : Through variable stiffness design (such as multi-stage springs), the optimal damping effect of the transmission system under different loads is achieved, avoiding resonance and extending the service life of components.
Youdaoplaceholder0 summary : Automotive torsional shock absorbers are key components in the power transmission system. Their design needs to balance lightweight and performance requirements, achieving efficient vibration suppression through multi-stage damping and the application of composite materials.
Automobile torsional shock absorbers mainly improve the smoothness and stability of the power system's operation by reducing the natural frequency of torsional vibration in the transmission system, increasing torsional damping, and attenuating transient torsional vibration.
Core function
Youdaoplaceholder0 reduce the natural frequency of the transmission system
By reducing the torsional stiffness at the junction of the engine crankshaft and the transmission system, the natural frequency of the system deviates from the operating speed range of the engine, thus avoiding resonance.
Youdaoplaceholder0 increase torsional damping
Vibration energy is consumed by the shear deformation of rubber or the viscous damping of silicone oil, the amplitude of torsional resonance is suppressed, and the impact of shock loads on the transmission system is reduced.
Youdaoplaceholder0 eliminate idle noise and vibration
Control the torsional vibration of the clutch and transmission shaft system during the idle speed of the powertrain, eliminate the idle noise of the transmission and the torsional vibration noise of the main reducer and the transmission.
Youdaoplaceholder0 improve the smoothness of clutch engagement
Mitigate the torsional shock under unstable conditions (such as starting and shifting gears), make the clutch engagement smoother, and extend the service life of the transmission system parts.
A malfunction of a car's torsional shock absorber usually leads to abnormal engine shaking, increased noise, and may accelerate component wear. The following are specific symptoms and suggestions for coping:
Common symptoms
Youdaoplaceholder0 Engine vibration intensifies : Shock absorber failure can cause the vibration of the power system to be transmitted to the vehicle body, manifested as obvious steering wheel vibration at idle and a "buzzing" sound during acceleration.
Abnormal noise near the pulley : If there is a dull "thump thump" sound or a metallic friction sound at the connection part of the shock absorber (such as the pulley), be alert to the aging of the oil seal inside the shock absorber or the wear of the piston.
Youdaoplaceholder0 Rubber debris residue : Shock absorber failure may cause the rubber layer to fall off, forming debris accumulation near the pulley.
Youdaoplaceholder0 Abnormal vibration amplitude : When the engine is running, the vibration amplitude may increase by more than 60%. In the long term, it may cause fatigue damage to components such as the crankshaft.
Maintenance suggestions
Youdaoplaceholder0 inspection cycle : It is recommended to conduct an inspection every 80,000 kilometers. The replacement cost is approximately several hundred yuan, which can avoid major repair costs of tens of thousands of yuan.
Youdaoplaceholder0 Fault handling : If the above symptoms are found, the shock absorber assembly should be replaced in time (original factory or well-known brands such as KYB and Mono are more reliable) to avoid damaging other suspension components as a result.
Note: If problems such as abnormal steering noise and uneven tire wear occur simultaneously, other components of the suspension system should be checked at the same time.
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