26 automotivE dEsign
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So here the ContiTech solution makes possible reliable and clean operation regardless of the temperature and the engine setting. Excellent design know-how is required to adapt the SCR system to the wide variety of industrial applications in which the process is used – ranging from the farm tractor and mobile crane to the power pack. The structural prerequisites into which the ContiTech designers integrate their SCR lines vary as greatly as the applications.
The main challenge is that of optimally connecting the individual components linking the AdBlue tank, the feed pump, and injector. A compromise must be found for the components between flexural stiffness and flexibility.
There are also several approaches to heating the lines. In addition to the tried-and-tested standard method with the integrated heating filaments, the carbamide can also be kept from freezing by using the cooling water. Power units that are used only in mild climates get along entirely without heating.
In co-operation with its partners in industry, ContiTech brings tailor-made solutions quickly to production readiness:
The heatable carbamide lines for SCR technology are without a doubt one of our most successful developments in recent years. With the development through to production readiness, however, the project was far from finished for ContiTech’s designers. They remain hard at work to perfect the product and to up new application possibilities.
Continuous optimisation
There has been major progress in particular in the material development. It turned out that the high permeability of the original EPDM jacket was a disadvantage in the automotive sector since it could have resulted in an odour problem in the car – which is not the case in for instance trucks, construction machines or farm implements where the lines are located outside. ContiTech’s material developers managed to solve this problem quickly: the hose lining on all ContiTech SCR lines now consists of a low-permeation EPDM/butyl compound jacketed in EPDM. Industrial applications and commercial vehicles also profit from the constant further development.
This has further benefits for the customer. By making advancements in material development and the ongoing optimisation of the manufacturing process, we have
been able to not only reduce costs substantially, but also further enhance quality and effectiveness.
Throughout all of Europe, availability of the aqueous carbamide solution has long been ensured. There are AdBlue depots at transport companies and many public filling stations
In addition to pumps for AdBlue, refill canisters can now be found at many filling stations across Europe. But ContiTech supplies more than just the vehicle lines for SCR technology. The company also produces the tank lines for the network of AdBlue service stations found virtually everywhere. The pump hose has no adverse
effect on the purity of AdBlue. Its distinguishing feature is an ultra-low-diffusion inner lining. The cover is highly resistant to wear and aging.
Low-stretch textile mesh with crossed tin-plated copper strands are used as the tensile member. Because of its ample flexibility, the hose allows for easy handling even when a nozzle is firmly attached to it.
C
ost-saving, eco- and climate-friendly units make major demands on materials and technology. With new materials and processes, ContiTech Fluid Technology establishes the prerequisites, making a substantial contribution to the realisation of future-compatible vehicle generations with its hoses and hose line systems. ContiTech AG is a specialist for rubber and plastics technology in the non-tyre rubber sector. The company develops and produces functional parts, components, and systems for the automotive industry and for other key industries.
As a supplier of brake systems, systems and components for the powertrain and chassis, instrumentation, infotainment solutions, vehicle electronics, tyres and technical elastomers, the corporation contributes towards enhanced driving safety and protection of the global climate. Continental is also a partner in networked automobile communication. The corporation currently employs approximately 134 000 at nearly 190 locations in 35 countries. m
Enter 26 or ✔ at
www.engineerlive.com/ape
Georg Franz is with ContiTech AG, Hanover, Germany.
www.contitech.de
www.engineerlive.com
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