ContiTech Press Releases

Hanover, April 2010Lines from ContiTech help reduce emissions • Heated plastic lines and quick connectors developed • Know-how from commercial vehicle industry also available for agricultural machines

Engine manufacturers are faced with major challenges: Their products must be manufactured at lower cost, they must be more environmentally friendly and more efficient, and at the same time, the engines must perform better. Furthermore, more stringent emission levels put pressure on the sector. As the world's largest rubber and plastics technology specialist, ContiTech AG (booth A16 in hall 5) is making a considerable contribution to realizing future-compatible engine generations with the second hose line generation for the exhaust gas purification technology SCR. Here, we transfer the know-how from the commercial vehicle sector specifically to the engines in other vehicles,” says Günter Fröhlich, head of ContiTech’s Fluid Technology unit. When used in agricultural machines for instance, the system ensures that production of foodstuffs is more environmentally-responsible and less damaging to the atmosphere.”

Alongside its SCR lines – tried and tested a million times over – ContiTech now also offers an advanced second generation version with heated quick connectors.

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SCR technology makes compliance with stringent exhaust gas standards possible
With level IIIB of the 97/68/EC directive and the US emission standard Tier 4 i, new emission limits will go into effect starting in 2011 for non-road vehicles such as construction machines and agricultural implements, transport vehicles and platforms. Engine modifications alone can hardly ensure compliance with the requirements contained in these regulations. This is where selective catalytic reduction technology (SCR) comes into play. Already proven on the European market, it transforms noxious nitrogen oxide (Nox) into steam and nitrogen with the help of a carbamide solution (AdBlue). With a heatable EPDM-based hose line developed especially for the SCR process, ContiTech is a pioneer in the introduction of this next-generation technology.

The heatable plastic lines developed by ContiTech are designed especially for SCR systems with retractive suction. They weigh much less while fulfilling all the requirements for modern SCR systems.

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Optimized SCR line systems for lower emissions
"Alongside its SCR lines – tried and tested a million times over – ContiTech now also offers an advanced second generation version," explains Christof Kirsch, plant manager at ContiTech Fluid Technology in Friedberg. “It is equipped with heated quick connectors with optimum contacting, guaranteeing that the medium always thaws, also in the area of the plug connection. The connectors are available in two types: With PUR coating of the entire plug, which is suitable for high unit volumes and makes for a very compact solution overall, and as an extremely flexible modular system with hinged manifold sleeves and a separate heat element. The second version is primarily suitable for small to medium-size unit volumes. In future, ContiTech will also be offering three hose types: the previous standard solution; an advanced, higher-quality rubber hose; and a plastic solution. On the rubber hose, an EPDM outer skin with a butylene layer guarantees enhanced impermeability. With the SCR process, emissions of environmentally-damaging nitrogen oxides and carbon dioxides can be reduced by up to 80 percent. Soot particulate emissions are reduced by as much as 40 percent.

The heatable plastic lines developed by ContiTech are designed especially for SCR systems with retractive suction. They are much lighter in weight and significantly cheaper than the proven elastomer lines and fulfill all the requirements for modern SCR systems. However, in contrast to previous SCR lines, they must be suction cleaned to empty them when the vehicle is parked.

Engine manufacturers such as Deutz and MTU make use of SCR technology, and manufacturers of farm implements such as ACGO-Fendt also rely on the eco-friendly process as does the construction machinery manufacturer Liebherr. “The number of engine series that use our SCR lines is increasing steadily,” says Robert Wurm, head of ContiTech Fluid Technology's Industrial Lines segment.