LOEMEATS 2. (Energieffektiv emissionsreduktion II, ) Jan Eismark, Joop Somhorst Volvo ATR, Volvo Cars. Energi & Miljö

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1 1 LOEMEATS 2 (Energieffektiv emissionsreduktion II, ), Volvo ATR, 1

2 Intro Title Alias p Energieffektiv emissionsreduktion II LOEMEATS II: LOw EMissions & Exhaust After Treatment System Program FFI, Energi och Miljö Start End FFI Funding 9.6 MSEK Total 19.6 MSEK Partners Volvo AB*,, Chalmers, Lund TH * Project leader and receiver of funding 2

After Treatment System Program FFI, Energi och Miljö Start 2012-05-17 End

3 Technical area keywords Emissions Efficiency CO2 footprint.. for diesel engines 3

4 Organisation Chalmers WP Volvo ATR WP Lead WP Lund TH WP WP WP=Work Package 4

5 Type of project Product development LOEMEATS University research 5

6 Objectives Find pathways to improvements by: Strech the limits using advanced tools Create and develop collaborations Dig into details but evaluate in a holistic way 6

7 Some definitions Engine concept Engine Engine-out EATS % conversion Tail-pipe Emissions Urea - cost Total fuel consumption 7

8 Engine technology level Energieffektiv emissionsreduktion II The balance to consider Advanced Concept meets goals but is complex and expensive enabling factors possible concepts Ordinary Concept can not reach goals Ordinary denox EATS technology level Advanced 8

and expensive enabling factors possible concepts Ordinary Concept

9 Enabling and limiting factors Enabling factors: What is needed to enable an improvement? Limiting factors: Actual or foreseen practical limitations in an engine concept. 9

10 Chalmers spraychamber Important combustion events were studied using various wall setups to mimic engine flame interactions. Flame-flame event Flame-wall event with five fuels 10

11 Enabling low emissionsimproved combustion ** New Volvo AB piston shape* enhances late mixing by improved flame-flame** flow event. * Patents granted 11

12 Concept evaluations Engine concepts with low-pressure EGR Heavy-duty Light-duty 12

13 Heat flux Highlight: LTH heat loss investigation High rail pressure increases heat load on the cooling system in general but reduces exhaust heat EGR reduces heat losses to the piston, cylinder walls and exhaust gas, but increases heat losses to cylinderhead Piston cooling return oil temperature as part of heat balance measurements in 4-cylinder diesel engine The use of different swirl levels did not show any significant change in the heat balance and heat losses(!) 13

heat losses to cylinderhead Piston cooling return oil temperature as part of heat balance measurements in 4-cylinder

14 EATS Highlight: compact EATS Light Duty Urea injection on back of HC/CO catalyst Exhaust gas Urea spray design study to optimize uniformity index in SCR catalyst. 1. HC/CO catalyst 2. SCR/DPF 14

15 Conclusions The project has demonstrated: removed soot-nox trade-off very flat Efficiency-nox trade-off EATS optimisation with advanced simulation tools Improved collaborations FFI-funding contributes to maintain long-term studies 15

optimisation with advanced simulation tools Improved

16 Acknowledgements Energimyndigheten is acknowledged for the financial support. Thanks for listening. 16

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