-
:
33
.––
99.2%
.) + (10%
50%10%.
11:1, 10:1, 9:15 .)(2000)1 (.
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
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Al-Rafidain Engineering Vol.18 No.4 August 2010
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ANNATDCCA°BSFCg/kW hBTDCCA°
COC2H5OH
CA°E0E1090% +10%E2080% +20%E3070% +30%E4060% +40%E5050% +50%LCVkJ/kgMBTN.m
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]7.[
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Al-Rafidain Engineering Vol.18 No.4 August 2010
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.)2850-1200(:
)100%, 75%, 50%, 25%.(
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)1(
SpecificationItemSpecificationItem
30°BTDC to10°ATDC
Ignition timing (petrol)Faryman A30 marinediesel engine
Engine type
5:1 to 18:1Compression ratio1Number of cylinder
CarburetorFuel system (petrol)95mmCylinder bore
Fuel enjectionFuel system (diesel)82mmStroke
Water-cooldCooling system4-strokeCycle
2 litersEngine oil (sump)582cm3Swept volume
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)=1 .(16
)Hanhart (
.
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Al-Rafidain Engineering Vol.18 No.4 August 2010
38
)CO% vol. ()HC ppm vol..(
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32
34
36
38
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30
32
34
36
38
40
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E0 E10 E20 E30 E40 E50
CR=11:1
N=2000 (rpm)
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Al-Rafidain Engineering Vol.18 No.4 August 2010
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. .)4 .(
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.
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)5 (Ignition Timing (oCA, BTDC)
0 5 10 15 20 25 30 35200
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380
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320
340
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640
660
680
700
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740
760
780
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)9 (Ignition Timing (oCA, BTDC)
0 5 10 15 20 25 30 35600
620
640
660
680
700
720
740
760
780
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680
700
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740
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CR=11:1
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:
41
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20
40
60
80
100
E0E10E20E30E40E50
CR=9:1
N=2000 (rpm)
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Al-Rafidain Engineering Vol.18 No.4 August 2010
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:
)50% - 10% (
:-1- .2-)BSFC (
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-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)
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20
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CR=11:1
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