生物資源由来燃料およびエマルジョ ン燃料を用いた ディーゼルエンジン
Contents
1. BDF BDF 3 4 NOx NOx Fig 5 2 1 NOx2. Table 3 82 6 BDF Table 2 Specification of light oil and BDF used as fuel 2 Rd RA elements contained in Density 288K kg m3 818 886 Element Volume ratio Kinematic viscosity 323K m2 s 1 80x10 6 3 79Xx10 6 Flas
3. BDF BDF H f Soot SOF Fig 5 5
4. EE 1 2 BDF BDF Fig 2
5. Fig 2 220 890 Condition1 Brakemean effective pressure 0 1MPa Condone Brake mean effective pressure 0 5MPa 200 1 1 1 360 g 5 8 180 8 amp 330 8 8 8 amp 160 g 300 g 140 wm 270 up bn E 120 8 240 NR 100 210 80 a 180 Ei 1 1400 1600 1800 2000 2200 1400 1600 1800 2000 2200 Enginespeed min Enginespeed min Fig 3 Variations of exhaust gas temperature with engine speed measured for the conditions 1 and2 by using light oil BDF and emulsified fuel 3 3 BDF
6. NOx 9 BDF
7. 2 1800 2200min1 Fig 4 BDF Condition2 Condition2 Enginespeed 1800mm1 ngine speed 2200minT rightoil F Lightoil BDF BDE LN PR Paereeo Fr Bmulsified fuel nd nl a NE 8 Cylinder pressure MPal Cylinder pressure MPal Ignition delay Ignition delay Injection start Injection start Before top deadcenter17 1 1 1 gt Before top dead center 17 1 MT Tt 2 EE 1 OI Ti EE et OE Tl EE 1 ed a 1 a OO Ct TY et Fe 0 sis EE PE 1 yO a Ms TO Oy Sy I ET Ni a Wr Sh I A Sh 0 OE 2 pF DN TE IT VE 50 40 30 20 10 0 10 20 30 40 50 50 40 30 20 10 0 10 20 30 40 50 Crankangle Crankangle Fig 4 Variations of cylinder pressure with the crank angle measured for the condition 2 engine speed 1800 2200min l by using light oil BDF and emulsified fuel 74
8. CO 170 BDF CO 23 PM
9. COs COs PM Particulate Matters NOx Nitrogen Oxides PM NOx BDF Bio Diesel Fuel PM
10. 1 2 2 1 BDF NOx PM NOx PM PM 2 2 Table 1 9
11. 1 BDF PM BDF E NOx PM PM 1 IPCC 2 2
12. 41 2011 Exhaust Gas Characterstc of Diesel Engine by Using Bio Fuel and Emulsified Fuel Haruyoshi Ida and Toshihiro Uejima BDF Bio Diesel Fuel contributes to reducing the concentration of CO2 in the atmosphere because it is a carbon neutral fuel However the use of BDF increases NOx emission from diesel engines though the generation of PM Particulate Matters is controlled by the oxygen content in the BDE On the other hand emulsified fuel emulsion of water in light oil has been expected to have an effect on the s1multaneous reduction of those emission gases but its use has not spread In this paper the BDF and emulsified fuel are applied to a diesel engine for the purpose of reducing emissions by the fuel which is usable without remodeling the engine and the exhaust gas characteristic has been examined As a result it is clarified that these fuels are effective for the exhaust gas purification Keywords Diesel Engine Bio Diesel Fuel Emulsified Fuel Exhaust as
13. 41 2011 BDF PM 3 BDF PM E PM PM 2 ba Su Co T PM emission g kWh 0 5
14. 23 16 oma 1 Brakemeaneffective pressure 0 1MPa Condition2 Brakemean effective pressure 0 5MPa 20 17 8 11 a 3 8 1 i 5 4 Emulsified fuel wNe i mE 1400 1600 1800 2000 2200 1400 1600 1800 2000 2200 Engine speed min 1 Engine speed min Fig 5 Variations of NOx emission with engine speed measured for the conditions 1 and 2 by using light oil BDF and emulsified fuel 3 5 PM PM Fig 6 1 2 Tig 3 BDF PM PM NO 2
15. 2 NOx BDF NOx NOx NOx Fig 4
16. 1 BDF BDF 2 800 400 a Wh co Co ww gt o Co o Brake specific fuel cons
17. Condition 1 Brakemean effective pressure 0 1MPa E 1400 1600 0 0 PWM Brakemean effective pressure 0 5MPa 1800 Engine speed min1 2000 2200 1400 1600 1800 Enginespeed min 2000 2200 fig 6 Variations of PM emission with engine speed measured for the conditions 1 and 2 by using hght oil BDF and emulsified fuel 3 6 PM mm mSoot Condition 2 2 5 msor Brakemean effective pressure 0 5MPa 1 a PM 8 1 5 3 PM 8 1 0 Sulfate a Gee 1 BDF NM BDF Emulsified 0 BDF Emulsified SOF Soluble 90 0 6 Enginespeed min1 Organic Fraction FM Fig 7 Compa
18. Table 1 Specification of the diesel engine used in this work Engine type Horizontal water cooled 4 stroke Combustion chamber Direct injection Cylinder Bore and stroke mml Single 102 x 105 Displacement 0 857 Maximum power kW PS Engine speed min1 12 5 17 0 2400 Compression ratio 17 8 Air charging Naturally aspirated 41 2011 2 3 2 BDF BDF BDF 2 Table 2 789 BDF
19. 006 7 83 61 11 2007 22 4 http www emulsion fa com about html 5 6 NE 7 8 1 177 2003 KC 24895 2005 9 62 3 2008 62 11 2008 24 11 NTS 2007 482 23 3 31
20. hpoint KI 325 428 Light oil Solvent Water Oxygen content wt 0 26 11 24 Gross calorific value kJ kg 46 0X103 39 9X103 Glycerin 8 1400 2200min 1 0 1MPa 2GE 0 5MPay 1 2 BDF 3 1 Fig 1 1 BDF
21. rison of mass fraction of the 3 gt Soot PM sulfate soot and SOF contained in PM 2 PM Soot Fig 7 176 BDF Soot Soot i Ni NOx
22. umption g kWh Brake specific fuel consumption g k 3 550 1 300 Lightoil 500 SR 280 450 1 1 260 5 a 1400 1600 1800 2000 2200 1400 1600 1800 2000 2200 Engine speed min1 Engine speed min1 Fig 1 Variations of brake specific fuel consumption with engine speed measured for the conditions 1 and 2 by using light oil BDF and emulsified fuel cw Pe to Brake thermalefficiency Brake thermal efficiency eo eo Lightoil 11 23 10 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 21 1 1 1 1 1 1 1 1 1 1 1 1 i 1 1400 1600 1800 2000 2200 1400 1600 1800 2000 2200 Engine speed min Engine speed min 1 Fig 2 Variations of brake thermal efficiency with engine speed measured for the conditions 1 and 2 by using light oil BDF and emulsified fuel 41 2011 3 2 Fig 3 1 2 BDF
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