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Head Office
Kendrion N.V.
Vesta Building - 5th floor
Herikerbergweg 213
1101 CN Amsterdam
The Netherlands
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Kendrion contact
Head Office
Kendrion N.V.
Vesta Building - 5th floor
Herikerbergweg 213
1101 CN Amsterdam
The Netherlands
Contact now

Unsteady belt run in your bus? 

A new dimension of quiet-running belt drive with the use of Kendrion decoupling system in buses and trucks 

Diesel engines run unevenly - especially in the lower speed range - causing high levels of vibration at the crankshaft. These vibrations are transmitted via the drive belts to the auxiliary units, such as the A/C compressor and the fan drive. The consequences are noise emissions, wear and fastening problems as well as increased energy consumption. This is where the Kendrion decoupler LDD comes in. It ensures smooth running in the engine compartment, while increasing the service life of the auxiliary units and improving energy balance! The LDD eliminates 99.5% as a decoupler and only 0.5% as a crankshaft damper. 

In the future, the problem will increase even more with the use of mild hybrid systems. Thanks to its flexible installation, the torsional vibration decoupler can be used for a variety of arrangements in the engine compartment. 
 

The Kendrion decoupling system enables a double effect on the crankshaft pulley, based on the following two elements: 

  • Permanent magnets effect a more progressive and smooth “decoupling” function when transmitting power in the operating range of the FEAD
  • Special rubber dampers serve as a buffer to enable the full force transmission of maximum torque
  • Different pulley diameters and belt profiles

Advantages at a glance

The positive impact on the accessory drive has the following benefits:

  • Increases the life time of all accessories and belts.
  • Reduces high forces at start and stop.
  • Reduces fuel consumption and CO2 by decreasing the belt tension.
  • Plug and play: LDD replaces the existing pulley. No additional modifications required.
  • Maintenance free.
  • No self-heating, no losses
  • Continuous belt tension during all driving conditions.
  • No belt slippage even under the most extreme operating conditions
  • No belt flapping
  • Frictionless
  • Adaptability of the spring characteristic curve to the engine dynamics.

Technical data

Information Numerical value
maximum decoupling torque 300Nm
Max Diameter 350mm
Max. length 120mm
Ambient temp. limit -40°C short time; 120°C durable; 135°C short time
max. temporary ambient radial load 5000N
ambient radial load 2800N

Download

Automotive - Brochure Decoupling Systems
pdf - 1 MB
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