DEF line solutions on- and off-road DEF line solutions on- and off-road DEF line solutions on- and off-road DEF line solutions on- and off-road DEF line solutions on- and off-road DEF line solutions on- and off-road DEF line solutions on- and off-road DEF line solutions on- and off-road
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DEF line solutions on- and off-road

Design of an electrically heated DEF line

Design of an electrically heated coupling – US patent pending

Simulating the temperature behavior of an electrically heated line

Testing the temperature behavior of an electrically heated coupling

Example for determining the de-freezing properties at 14 W/m and -40°C ambient temperature

SCR applications in trucks, buses and cars as well as agricultural and construction machinery – VOSS is the preferred development partner for DEF line and connection technology for present and future exhaust standards: Euro VI (heavy diesel engines onroad), Euro 6 (light vehicles) and Stage IV (offroad) and others.

The international VOSS centers for technical support, development and production provide for the closest possible proximity to customers – well-proven in a multitude of projects through many years. The plants in Poland, Mexico and China are constructed to the same standards. The manufacturing processes for SCR lines are identical.

VOSS competence and technical solutions

  • Project-specific tuning of the heating concept
  • Individual systems for heating the DEF lines, and for the cooling of the dosing module with coolant from the existing engine cooling circuit
  • Combination of electrical heating and heating with cooling water
  • Lines and connectors are electrically heated
  • Balanced combination of techniques for a safe and efficient heating performance
    • Safe and simple encapsulation of the electric connections
    • Electrically heated connectors are air insulated
    • Reliable sealing prevents heat loss and contamination
    • Customized heating performance for specific applications
  • High temperature configuration up to 160°C (long term) and 180°C (short term)
  • Validated applications for various hoses and tubing: plain and corrugated tubes; formed or flexible
  • Laser welding transition between PA tube and heated connector
  • 12 and 24 volt system applications, suitable for PWM control
  • Designed for outstanding performance in extreme environments, especially off-road
  • Extensive testing program as part of development and series production
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