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

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PPC- LD Comparison of Negative Valve Overlap (NVO) and Rebreathing Valve Strategies on a Gasoline PPC Engine at Low Load and Idle Operating Conditions SAE Paper 2013-01-0902 Patrick Borgqvist, Per Tunestål, Bengt Johansson Lund University 44
IMEP gross [bar] Introduction Partially Premixed Combustion – Light Duty Engine 25 20 15 10 5 0 20 30 40 50 60 70 80 90 100 RON [-] PPC Operating Region from Heavy Duty Experiments [1] • Goal: Increase attainable operating region - Means to reduce minimum load: Injection strategies - Advanced pilot strategies - Split main Trapping hot residuals - Temperature increase - Dilution - Stratification Glow plug [1] Manente, V., et al. “An Advanced Internal Combustion Engine Concept for Low Emissions and High Efficiency from Idle to Max Load Using Gasoline Partially Premixed Combustion”, SAE 2010.01-2198 45
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 and 16: Why is PPC not possible at highest
Page 17 and 18: Effect of EGR and compression ratio
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 43: Outline • Combustion concepts •
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 69 and 70: The End Thank you 69

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