Blending (railroad)

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When blending or Blockblending refers to the additional controlled supply of air brakes on locomotives in acting dynamic brake . As a rule, this is used to compensate for the lower braking force of the dynamic brake in the high speed range in the event of rapid and emergency braking and thus ensure that the required maximum braking force is reached. In modern railcars, blending ensures that the low-wear hydrodynamic or electrical brake is effective and that the compressed air brake is only activated when the braking force of the dynamic brake is insufficient. This prevents the adhesion limit from being exceeded when the compressed air and dynamic brakes interact.

In Germany, the vehicles of the series 401 and 402 , 422 , 423 , 424 , 425 , 430 , 1428 (Stadler Flirt³) as well as the series 643 , 644 , 648 and the Siemens Vectron have this function.

literature

  • Frank Minde: Basics of Railway Brake Technology (PDF; 144 kB). Minden (Westphalia), 2007