:

33

.––

99.2%

.) + (10%

50%10%.

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30%.

)knock (.

The Effect Of Adding Ethanol To leaded Gasoline on ThePerformance of Spark Ignition Engine

Dr. A.R Habbo Mr.H.S HammodiUniversity of Mosul University of Mosul

College of Eng. College of Eng.Mech. Eng. Dept Mech. Eng. Dept

AbstractIn this study the effect of adding pure ethanol (99.2%) to leaded gasoline on the

performance of spark ignition engine have been investigated. All tests were carried outusing ethanol- leaded gasoline blends ( E10, E20, E30, E40 and E50) at variouscompression ratio ( 9:1, 10:1 and 11:1) for different ignition time ( 0º TDC- 30º BTDC),engine speed of 2000 rpm and an equivalence ratio ( 1).

The experimental results showed that blending leaded gasoline with ethanolslightly increased the torque , specific fuel consumption and exhaust gas temperatureand in particular when E30, E40 and E50 blends are used. However, results also showsa significant reduction in exhaust emission for high percentage ethanol-gasoline blend,i.e for E30, E40 and E50. In addition to all that blending gasoline with ethanol allowsengine to operate at high compression ratio without knock occurrence.

Keywords:- Spark ignition engine; Alternative fuel ; Exhaust emission

2008/11/202009/10/8

Al-Rafidain Engineering Vol.18 No.4 August 2010

34

ANNATDCCA°BSFCg/kW hBTDCCA°

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Al-Rafidain Engineering Vol.18 No.4 August 2010

36

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Al-Rafidain Engineering Vol.18 No.4 August 2010

38

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Al-Rafidain Engineering Vol.18 No.4 August 2010

40

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Al-Rafidain Engineering Vol.18 No.4 August 2010

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:

)50% - 10% (

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:

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2. Maher A.R. Sadiq Al-BAGHDADI, "A simulation model for a single cylinder four-strokespark ignition engine fueled with alternative fuels" Transaction of TUBITAK, Journal, vol.30, PP. 331-350, 2006.

3. E. ZERVAS, X. MONTAGNE, AND J. LAHAYE, "Emissions of regulated pollutants froma spark ignition engine. Influence of fuel and air/fuel equivalence ratio", Journal ofenvironmental science & technology, vol. 37, No. 14, PP. 3232-3238, 2003.

4. Hüseyin Serdar Yücesu, Tolga Topgül, Can Cinar, Melih Okur, "Effect of ethanol-gasolineblends on engine performance and exhaust emissions in different compression ratios",

)15 (Ignition Timing (oCA, BTDC)

-5 0 5 10 15 20 25 30 350

20

40

60

80

100

E0E10E20E30E40E50

CR=10:1

N=2000 (rpm)

)16 (Ignition Timing (oCA, BTDC)

-5 0 5 10 15 20 250

20

40

60

80 E0E10E20E30E40E50

CR=11:1

N=2000 (rpm)

:

43

Transaction of ELSEVIER, Journal of applied thermal engineering, vol. 26, PP. 2272-2278,2006.

5. M.A. Ceviz, F. Yüksel, "Effects of ethanol-unleaded gasoline blends on cyclic variabilityand emissions in an SI engine", Transaction of ELSEVIER, Journal of applied thermalengineering, vol. 25, PP. 917-925, 2005.

6. Tolga, Topgül, Hüseyin Serdar Yücesu, Can Cinar, Atilla Koca, "The effects of ethanol-unleaded gasoline blends and ignition timing on engine performance and exhaustemissions", Transaction of ELSEVIER, Journal of Renewable energy, vol. 31, PP. 2534-2542, 2006.

7. Hukan Bayraktar, "Experimental and theoretical investigation of using gasoline-ethanolblends in spark ignition engines", Transaction of ELSEVIER, Journal of Renewable energy,vol. 30. PP. 1733-1747, 2005.

8. H. Serdar Yücecu, Adnan Sonzen, Tolga Topgül, Erol Arcaklioglu, "Comparative study ofmathematical and experimental analysis of spark ignition engine performance used ethanol-gasoline blends fuel", Transaction of ELSEVIER, Journal of applied thermal engineering,vol. 27, PP. 358-368, 2007.

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