Liebherr has announced Eminox has been given the responsibility of developing its Stage V-compliant exhaust after-treatment systems (EATS). The Gainsborough-based emission specialist will help the engine manufacturer to meet the forthcoming emissions standard.
A Liebherr spokesman said, “One of the most significant challenges of Stage V is the requirement for further reductions in particulate matter, including particulate number count (PN), demanding the use of diesel particulate filter (DPF) technology, alongside continued tight control of NOx.
“With the new emissions legislation announced soon after the implementation of Stage IV, maintaining the space envelope for EATS was critical to Liebherr in order to avoid machine redesign.”
The Stage V approach incorporates advanced exhaust aftertreatment technologies including selective catalytic reduction (SCR) on filter technology and a diesel particulate filter (DPF) coated with SCR. Liebherr pioneered this technology already at Stage IV to produce a range of machines to meet the strict local emissions requirements for countries such as Switzerland.
This was one of the key building blocks that Eminox used to develop a compact range of EATS variants for the Liebherr Stage V solution, packaged within an almost identical space envelope.
Different inlet and outlet modules in different orientations will cover eight different engines and more than 140 separate machine types, with engines ranging in power from 230kW to 505kW.
Eminox used its in-house prototyping, testing and development tools for optimizing the Stage V solution for Liebherr. These include advanced CFD (computational fluid dynamics) FEA (finite element analysis) FMEA (failure mode effect analysis) and NVH (noise, vibration and harshness) analysis.
Mark Runciman, operations director for Eminox, said, “We are continuing to expand our business and are thrilled that Liebherr has continued to trust in our development and manufacturing expertise.”
Volume manufacturing of Liebherr’s Stage V solution will begin in 2018.