Dual Mass Flywheel - BMW 1 / 3 / X1 / X3 Series - Various Models
Dual Mass Flywheel - BMW 1 / 3 / X1 / X3 Series - Various Models
BMW Part Number: 21 20 7 637 279 / 21 20 7 577 479 / 21 20 7 567 829
Brand: LUK
Fitment: Complete
To Fit the following Models:
E81 1-Series 3-Door 120d - All Models
E82 1-Series Coupe 120d - All Models
E87 LCI 1-Series 5-Door 120d - All Models
E90 3-Series Sedan 320d - N47 All Models
E90 LCi 3-Series Sedan 320d - N47 All Models
E91 3-Series Touring 320d - N47 All Models
E91 LCI 3-Series Touring 320d - N47 All Models
E84 X1-Series 20d - All Models
E83 X3-Series LCI 2.0d - N47 All Models
A glance at the benefits of the Luk dual mass flywheel
- Top driving comfort
- Absorbs vibrations
- Prevents noise
- Enables comfortable, low-revs driving
- Saves fuel
- Relieves crankshaft and gearbox
This all makes the LuK dual mass flywheel the ideal solution.
With one drawback: the higher the mass reactance of the vibrating masses, the more excessive the resonance increase and associated torque peaks. With the dual mass flywheel, this would be easily perceived when starting and stopping the engine; much more easily than with a conventional clutch system. Additionally: the smaller flymass of the engine has less of a stabilising effect on the speed fluctuation of the engine.
Thanks to decades of experience in clutch building, the LuK specialists were able to find an excellent solution to this problem. An additional damping device effectively prevents resonance overload. In normal operation, however, this additional damping device has no function and the torsional vibrations of the engine are filtered out by spring dampers.
Friction and spring rate – the correct ratio is important.
For optimal vibration isolation and soft resonance passage when starting and stopping the engine, the ratio between friction and spring rate must be optimal. The length of the springs is a key factor: The softer a spring, the more efficiently vibrations are isolated. The extra-long springs of the latest generation of dual mass flywheels significantly reduce the spring rate compared to a first generation dual mass flywheel. In routine driving operations, excessive resonance increases are kept almost completely away from the gearbox
There are yet no reviews for this product.