Efficient filtration to meet future European standards

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GKD – GEBR. KUFFERATH AG is working with vehicle manufacturers and their suppliers to develop high-performance filter media that are proving their efficiency, including in the latest large series productions.

A spokesman for the company said: ''Diesel engines are the future. Their economy, efficiency and sturdiness meet the high expectations for tomorrow's vehicles. 

''But zippier mobility has to fulfil increasingly stringent standards for environmental compatibility. Consequently, the automotive industry is striving to keep pace with the constantly growing demands on diesel engines through further developments and innovative systems.''

Without compromising their level of performance, diesel engines have to reconcile maximum reductions of fuel consumption, CO2 and pollutant emissions with rigid market and model specifications for size, weight and price. Meeting the more stringent Euro 6 emission limits for passenger vehicles that will apply from 2014 calls for highly efficient systems comprising exhaust gas recirculation technology, diesel particulate oxidation catalyst (POC), selective catalytic reduction (SCR) and diesel particulate filter (DPF). In addition to reduction of nitrogen oxides (NOx) through exhaust gas recirculation, particle mass and count will also have to be significantly further reduced.

In the latest generation of LP EGR systems, GKD's innovative 3D Volumetric Mesh is proving very successful. Its considerably higher volume porosity of up to 90% facilitates effective filtration.

The pore distribution of this mesh type ensures retention not only of harmful particles from the DPF but also of the smaller particles that can occur due to a defective particle filter or a "soot slip". An effect that can also be used for further diagnostics. GKD determines the individual mesh construction and the specific design parameters using CDF simulation.