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Cooling Systems

Cooling Systems for Locomotives, Railcars and Special Vehicles

Reliability Wherever it's Needed.

Cooling Systems for Locomotives, Railcars and Special Vehicles. You Can Depend on Them.

Locomotives, railcars and special vehicles are frequently in continuous use. The same can be said about our cooling systems. Regardless of the type of drive - there is always a lot of heat. Our reliable cooling systems disperse this heat in a controlled manner. Even under extreme conditions. In all performance classes by means of a variable-speed fan drive. You can depend on it.

Installation mode for diesel-driven locomotives, railcars and special vehicles

Performance classes

  • DE and DH locomotives
    with an engine output of 300-4000 kW
  • DE and DH railcars
    with and engine output of 250-750 kW

Equipment to be cooled

  • Diesel engine (cooling water and charge air)
  • Transmission (hydrodynamic, mechanical)
  • Hydrostatic drives


  • Water-glycol mixtures
  • Mineral oils
  • Air


  • Whole-block or partial-block cooling elements made from nonferrous metals or aluminum
  • Fans made of aluminum
  • Digital temperature controller
  • Expansion tanks with fill level monitoring
  • Heat exchangers in tube-and-shell or plate-and-frame designs
  • Hydrostatic drives for fans and auxiliary equipment
    (e.g. compressors or generators with high frequency accuracy)


Installation mode for electric locomotives, railcars and special vehicles

In the equipment compartment

In or on the rooftop

Under the floor

Performance classes

  • Locomotives:
    with input power ratings of 1000-9600 kW
  • Drive heads:
    with input power ratings of 2000-12000 kW

Equipment to be cooled

  • Transformers
  • Traction motors
  • Rectifiers
  • Chokes, electrical resistors


  • Water-glycol mixtures
  • Mineral oils
  • Silicone oils
  • Ester oils
  • Air


  • As a cooling tower in the equipment compartment
  • As a cooling container in the vehicle roof or under the floor


  • Whole-block or partial-block cooling elements made from aluminum
  • Electric drives for fans
  • Fans made from aluminum or plastic
  • Recirculating pumps for the coolant


SilentVent – Improvement that Comes Quietly

With the new axial fan, we have improved the aerodynamic characteristics significantly. At the same time, we comply with the strict exhaust gas directives easily.

Great Input Power Requires More Cooling Capacity.

The completely new axial fan provides it. It simultaneously lowers the noise level of the cooling system. The geometry of the new fan has been improved decidedly, and air flows in and out optimized as regards noise generation.

Nanocoatings for Cooling Systems – Ensure Outstanding Performance.

Nanotechnology improves corrosion protection. It also helps to keep cooling equipment clean.

In order to ensure that our air-conditioning equipment also functions reliably in critical climate zones or in chemically aggressive surroundings, we now use a completely new coating system based on nanotechnology. This makes it possible to install smaller coolers that provide the same performance and weigh less. Less accumulation of dirt means longer maintenance intervals. Smaller cooling systems reduce vehicle weight – and thus fuel costs. Good for the operator and the environment.


Rail Service

Would you like to know more? Do you have questions or a specific application?


Service Helpline

(Technical Assistance)


t +49 7321 37 4181

Stakeholder Survey 2018 – Voith GmbH & Co KGaA

We cordially invite you to participate in our Stakeholder Survey 2018.

Its aim is to find out how you evaluate Voith's economic, social and environmental impacts and where you see improvement potentials in terms of the company’s sustainability performance.

The Survey Questionnaire will take around 10 minutes to complete.

Would you like to take part?