SCR on Filter System for Construction Machines

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1 SCR on Filter System for Construction Machines Engine Expo 2014, Open Technology Forum 24th June 2014, Stuttgart Messet Project partly founded by Regis VONARB Dr -Ing. Department Manager Exhaust Aftertreatment Co-Author Yves Hohl Dipl.Ing. SCRoFilter Project Manager Liebherr Machines Bulle SA LMB Dr. Regis VONARB

2 Overview Liebherr NRMM product range Liebherr Tier4f Exhaust After Treatment (EAS) solution Liebherr SCR on Filter system for Swiss and Low Emission Zone (LEZ) specificity SCRF - OPTI INTERREG IV funded program Conclusions 2 Engine Expo 2014 Open Technology Forum

3 Overview Liebherr NRMM product range Liebherr Tier4f Exhaust After Treatment (EAS) solution Liebherr SCR on Filter system for Swiss and Low Emission Zone (LEZ) specificity SCRF -OPTI INTERREG IV funded program Conclusions 3 Engine Expo 2014 Open Technology Forum

4 Liebherr NRMM Product Range 4 Engine Expo 2014 Open Technology Forum

5 Overview Liebherr NRMM product range Liebherr Tier4f Exhaust After Treatment (EAS) solution Liebherr SCR on Filter system for Swiss and Low Emission Zone (LEZ) specificity SCRF -OPTI INTERREG IV funded program Conclusions 5 Engine Expo 2014 Open Technology Forum

6 Tier 4F SCR-only for all applications For stage 4 Final, all the Liebherr machines are equipped with a SCR-only solution 6 Engine Expo 2014 Open Technology Forum

7 Overview Liebherr NRMM product range Liebherr Tier4f Exhaust After Treatment (EAS) solution Liebherr SCR on Filter system for Swiss and Low Emission Zone (LEZ) specificity SCRF -OPTI INTERREG IV funded program Conclusions 7 Engine Expo 2014 Open Technology Forum

8 Swiss Market / Low Emissions Zone (LEZ) LEZ in EUROPE (More than 200 cities) Switzerland Close DPF mandatory since 2009 In Switzerland, since 2009 a closed DPF is mandatory for new construction machine In recent years, the LEZ increase in Europe As for EURO VI, the PN limit will come for the next emissons stages (Stage V) -> find a solution in order to offer to the end customer a robust and cost effective solution for those current specific «niche» markets and future european Market! 8 Engine Expo 2014 Open Technology Forum

9 EAS system to fullfill this specific requirements Cost and packaging were the main criterias to evalutate those systems LMB - Tier 4F solution SCR Solution 1 SCR DPF - Retrofit Solution 2 Reference (main Off road market trend for Stage IV) AGR DOC DPF SCR Solution 3 DOC SCR on Fiter 9 Engine Expo 2014 Open Technology Forum

10 EAS Volume comparison engine Substrate volume comparison SCR-only + DPF retrofit SCR-only + DPF retrofit vs. SCR on Filter Compared to the reference, the smallest system volume is the SCR-only and the biggest one the SCR-only + DPF retrofit. The SCR on Filter system offer the filtration function with the lowest packaging 10 Engine Expo 2014 Open Technology Forum

11 Precious Group Metal (PGM) loading comparison SCR-only (LMB Tier 4F solution) 15% of tot. Vol. with Pt-coating PGM loading comparison SCR-only + DPF retrofit 58% of tot. Vol. with Pt-coating AGR + DOC + DPF + SCR 65% of tot. Vol. with Pt-coating SCR on Filter 23% of tot. Vol. with Pt-coating The SCR-only is the system with the lower PGM content (only on the clean up catalyst). The DOC + DPF + SCR system has the highest PGM loading The SCR on Filter system offers the filtration function with the lowest PGM loading 11 Engine Expo 2014 Open Technology Forum

12 Targets to be achieved with the SCRonFilter system Target 1 - Packaging SCR on Filter vs. SCR-only The component installation is the same for SCRonly and SCR on Filter solution for: The exhaust gas aftertreatment system fixation The Sensors The AdBlue supply system Only the piping between turbine outlet and SCRF inlet has to be changed With this installtion, the machine could be sell to the end customer with the SCR-only or with the SCR on Filter solution. From the outside of the machine, no differencies is visible if SCR-only or SCR on Filter is installed 12 Engine Expo 2014 Open Technology Forum

13 Targets to be achieved with the SCRonFilter system Target 2 Compliance with the exhaust gas regulation Stage IV final emissions compliance (NOx 0.4 g/kwh) VERT / LRV (Swiss market) compliance (PN 1x10e12 #/kwh) Target 3 - Passive Regeneration The soot balance point has to be reach on specific customer cycles and on NRTC Target 4 - Durability Ash impact on the DeNOx, on the filtration efficiency and on the backpressure Emissions compliance: hours Liebherr durability target: hours Target 5 Ability to «accept» differents Fuels (US, B10,..) Impact on NOx conversion rate & PN emissions and Emissions compliance: Ash impact on the DeNOx, on the filtration efficiency and on the backpressure -> SCRF - OPTI Founded program! 13 Engine Expo 2014 Open Technology Forum

14 Overview Liebherr NRMM product range Liebherr Tier4f Exhaust After Treatment (EAS) solution Liebherr SCR on Filter system for Swiss and Low Emission Zone (LEZ) specificity SCRF -OPTI INTERREG IV funded program Conclusions 14 Engine Expo 2014 Open Technology Forum

15 Partners & activities INTERREG (FR-CH) project FRANCE University of Haute Alsace Laboratory GRE SWITZERLAND Liebherr Machines Bulle CH project carrier SCR catalyst sublimation study Soot analysis & reactivity measurements R&D moteurs FR project carrier FH Bienne Test bed capacity Testing different fuels (ASTM2D, B10,..) Test performing/analysing PN Measurements (according to SN ) 15 Engine Expo 2014 Open Technology Forum

16 Testing conditions-timeplan Engine HW Descriptions Datas Engine typ Emissions Tier4f, no EGR Engine displacement 7.1L Timeplan EN590, ASTM2D, B10 RME Impact of different fuels on the EO emissions and calibrations Soot reactivity on different customers cycles and with different fuels PN, DeNOx performance and passive regeneration behaviour with different fuels Typical Low load Customer cycle 1000 hours with B10 RME h End July h Beg Sept h PN, DeNOx performance and passive 0, 500 & 1000h 16 Engine Expo 2014 Open Technology Forum

17 Overview Liebherr NRMM product range Liebherr Tier4f Exhaust After Treatment (EAS) solution Liebherr SCR on Filter system for Swiss and Low Emission Zone (LEZ) specificity SCRF -OPTI INTERREG IV funded program Conclusions 17 Engine Expo 2014 Open Technology Forum

18 Conclusions Available Liebherr Stage4/Tier4f EAS solutions : SCR Only! «Next» EAS generation : SCRon Filter on the good way for 2015 Serial introduction! Founded INTERREG program on going Impact of US, B10 RME fuel on PN, DeNox 18 Engine Expo 2014 Open Technology Forum

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