Does the wear of flywheel disc of freight car gearbox have any effect?

The dual mass flywheel is the best device for vibration isolation and vibration reduction in current automobiles. Therefore, it has been widely promoted in Europe since the 1990s, from high-end cars to mid-level cars. This has a lot to do with Europeans' preference for manual transmission and diesel cars. As we all know, the vibration of diesel engine is greater than that of gasoline engine. In order to reduce the vibration of diesel engine and improve the ride comfort, many diesel passenger cars in Europe now use dual mass flywheel, making the comfort of diesel cars comparable to that of gasoline cars. In China, the Bora manual transmission sedan of FAW Volkswagen also took the lead in adopting dual mass flywheel.
The main characteristics are as follows:
(1) Torsional vibration isolation: The dual mass flywheel can almost isolate the torsional vibration of the engine crankshaft from the gearbox, especially filter out the imbalance in the low-speed area of the engine. This makes it possible to reduce the idle speed and make the engine mainly run in the low speed area, thus improving the fuel economy and reducing the noise of the whole vehicle.
(2) Transmission load shedding
As the double mass flywheel reduces the imbalance of the input shaft, the load and stress generated by the gearbox are also reduced. The dual mass flywheel almost completely eliminates the additional torque of high-frequency transmission in traditional systems. Since the transmission reduces the additional load, it can transmit higher static torque. This is especially true in diesel engines with dual mass flywheels.
(3) Crankshaft load shedding
Since the primary mass of the dual mass flywheel is much smaller than that of the flywheel of the traditional transmission system, the rotational inertia of the flywheel is very small. At the same time, the secondary mass can be ignored for the bending load of the crankshaft. Therefore, the inertia moment brought by the rotational inertia of the flywheel reduces the dynamic load imposed on the crankshaft.
(4) Improved gearshift performance
Because the use of dual mass flywheel can effectively isolate the vibration from the engine, lubricating oil with lower viscosity can be used in cold weather, and better shifting effect can be obtained; In addition, the cancellation of the shock absorber of the clutch also reduces the force on the synchronizer, making the shifting force smaller.
In addition, due to the small load and long service life, the overall dimension is smaller than that of the transmission clutch.