Partially Premixed Combustion, PPC â Why all diesel engines ...

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Effect of EGR and compression ratio at 8 bar IMEP EGR sweep and compression ratio variation Load 8 bar IMEP Abs. Inlet Pressure 2.5 bar Engine Speed 1090 rpm Swirl Ratio 1.7 • <strong>PPC</strong> possible at 8 bar IMEP on compression ratios 12.4:1 and 14.3:1. • Narrower operating range with increased compression ratio. SAE 2006-01-3412 Increased EGR
Effect of EGR and compression ratio at 12 bar IMEP Load 12 bar IMEP Abs. Inlet Pressure 3.0 bar Engine Speed 1090 rpm Swirl Ratio 1.7 • <strong>PPC</strong> only possible at 12 bar IMEP with lowest compression ratio (12.4:1). • Soot emissions relatively high (compared to 8 bar IMEP). SAE 2006-01-3412 17
Page 1 and 2: Partially Premixed Combustion, PPC
Page 3 and 4: But I still think a single fuel is
Page 5 and 6: Outline • Combustion concepts •
Page 7 and 8: + Clean with 3-way Catalyst - Poor
Page 9 and 10: Partially Premixed Combustion, PPC
Page 11 and 12: 2006-01-3412 Characterization of Pa
Page 13 and 14: Emissions at 8 bar IMEP Load Abs. I
Page 15: Why is PPC not possible at highest
Page 19 and 20: 6 3 4 19
Page 21 and 22: Gasoline instead of diesel fuel Lic
Page 23 and 24: Gasoline tests in Scania D12 Bosch
Page 25 and 26: Energy flow in an IC engine Brake C
Page 27 and 28: [%] Efficiencies 14.3:1 100 95 90 8
Page 29 and 30: IMEP gross [bar] Tested Load Area 2
Page 33 and 34: Experimental System, Scania D13 Sca
Page 35 and 36: CA50 [CAD ATDC] Gross Indicated Eff
Page 37 and 38: RoHR/10 [J/CAD] / Injector Current
Page 39 and 40: Combustion Efficiency [%] Gross Ind
Page 41 and 42: Soot [FSN] UHC/NOx [g/kWh] CO [g/kW
Page 45 and 46: IMEP gross [bar] Introduction Parti
Page 47 and 48: IMEP gross [bar] Fuel Specification
Page 49 and 50: Rebreathing 55 50 45 40 Pressure [b
Page 51 and 52: IMEPgross [bar] IMEPgross [bar] Unb
Page 53 and 54: IMEPnet [bar] IMEPnet [bar] Net Ind
Page 55 and 56: Rate of Heat Release [J/CAD] Rate o
Page 57 and 58: IMEPgross [bar] NVO Injection - Com
Page 59 and 60: IMEPgross [bar] NVO Injection - NOx
Page 61 and 62: IMEPgross [bar] NVO Injection -Lamb
Page 63 and 64: std IMEPnet [bar] Putting it all To
Page 65 and 66: Net Indicated Efficiency [%] Puttin
Page 67 and 68:
Outline • Combustion concepts •
Page 69 and 70:
The End Thank you 69
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Partially Premixed Combustion, PPC â Why all diesel engines ...