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British emissions specialist Eminox says it has received an order from Liebherr’s engines division, Liebherr Machine Bulle to supply exhaust system components for up to 10,000 machines a year.
The components, based on selective catalytic reduction technology, will help Liebherr's engine meet EU Stage 4/EPA Tier 4f emissions standards.
Eminox has supplied exhaust systems for non-road original equipment manufacturers since 1988 and has experience of integrating technologies, including DPFs (Diesel Particulate Filters) and SCR, combined with the applications engineering expertise to meet the most challenging system integration requirements.
Paul Canwell, the project manager at Eminox, said, "This has been a real development partnership between the two companies, with each complementing the other in perfecting these systems."
One of the key objectives was to keep the number of exhaust system variants to a minimum while working within the limited space available for mounting the systems on many of the machines. Eminox met these requirements by using novel system geometry and innovative urea injection points coupled with advanced mixing.
System development was supported by computer-aided design, computational fluid dynamics simulations, acoustic modeling and back pressure calculations. Eminox's rapid prototyping capabilities meant that prototypes could be produced at each stage of development, and Liebherr could then test them on their own engine beds to confirm modeled performance.
Having designed and developed a range of systems to cover the whole range of Liebherr engines, Eminox's flexible cellular manufacturing capability means each variant can be manufactured efficiently, in response to future demands.
Liebherr Machines Bulle produces diesel engines and other components for Liebherr group machines. At the moment Liebherr supplies six different basic engines in the power categories from 160 to 750 kW that comply with EU Stage IV / EPA Tier 4f. The 4- and 6-cylinder inline engines, the V8 and V12 are specifically designed for mobile offroad applications and are ideally suited for earthmoving and mining equipment, cranes, agricultural and special machinery. Liebherr diesel engines are not only used in the Group's construction machines but also by customers outside the Liebherr Group, for example in mining equipment, other manufacturers' construction machinery, special-purpose vehicles and many other applications.
In April, Liebherr presented its new generation of diesel engines complying with EU Stage IV / EPA Tier 4f exhaust emission regulations at Bauma.
credit: http://www.cranestodaymagazine.com
