Investigation of the performance and emissions of bus engine operating on butanol/diesel fuel blends

Rakopoulos, Dimitrios C.; Rakopoulos, C.D.; Hountalas, D. T.; Kakaras, Emmanuel; Giakoumis, Evangelos G.; Papagiannakis, Roussos G.

doi:10.1016/j.fuel.2010.03.047

Cited by 277 publications

(106 citation statements)

References 37 publications

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“…At higher speeds, the power required to overcome friction increases at a higher rate, resulting in a slower increase in output power with a consequent increases in BSFC. This phenomenon has been largely documented by previous research [31], [9], [10], [32]- [34]. The main reason for higher BSFC for an engine running with biodiesel blends is mainly due to the low heating value of the biodiesel as discussed in Figure 3.…”

Section: Effects Of Lhv On Engine Performancesupporting

confidence: 57%

LHV predication models and LHV effect on the performance of CI engine running with biodiesel blends

Tesfa

Mishra

et al. 2013

Energy Conversion and Management

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The heating value of fuel is one of its most important physical properties, and is used for the design and numerical simulation of combustion processes within internal combustion (IC) engines. Recently, there has been a significant increase in the use of dual fuel and blended fuels in compression ignition (CI) engines. Most of the blended fuels include biodiesel as one of the constituents and hence the objective of this study is to investigate the effect of biodiesel content to lower heating value (LHV) and to develop new LHV prediction models that correlate the LHV with biodiesel fraction, density and viscosity.Furthermore, this study also investigated the effects of the LHV on CI engines performance parameters experimentally. To achieve the above mentioned objectives density, viscosity and LHV of rapeseed oil biodiesel, corn oil biodiesel and waste oil biodiesel at different blend fraction values (B0, B5, B10, B20, B50, B75, and B100, where 'B5' denotes a blend of 5% biodiesel and 95% mineral diesel, etc) were measured as per EN ISO 3675:1998, EN ISO 3104:1996 and DIN 51900 standards. The engine experimental work was conducted on a four-cylinder, four -stroke, direct injection (DI) and turbocharged diesel engine by using rapeseed oil and normal diesel blends. Based on the experimental results, models were developed which have the capability to predict the 2 specific fuel consumption (BSFC) and thermal efficiency were analysed and it has been seen that for the neat biodiesel which its LHV is lower by 8% than diesel resulted in an increment of BSFC and thermal efficiency by 18% and 25% respectively.

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Section: Effects Of Lhv On Engine Performancesupporting

confidence: 57%

LHV predication models and LHV effect on the performance of CI engine running with biodiesel blends

Tesfa

Mishra

et al. 2013

Energy Conversion and Management

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show abstract

“…Rakopoulos et al [10] conducted experiments on a hydra engine and found a higher brake specific fuel consumption, (BSFC) at low brake mean effective pressure (BMEP) than at high BMEP for all the fuels using the blends 8%, 16% and 24% of n-butanol in DF. The BSFC slightly decreases with increasing load for all the fuels whereas BSFC increases with retarded main injection timing using the blends 8% and 16% of n-butanol in DF [15]. The BSFC increases when main injection timing is retarded using isobutanol, ISB15 and ISB20.…”

Section: Introductionmentioning

confidence: 91%

Performance Characteristics of n-Butanol-Diesel Fuel Blend Fired in a Turbo-Charged Compression Ignition Engine

Siwale¹,

Lukács²,

Török³

et al. 2013

JPEE

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In this study, n-butanol-diesel blends were burned in a turbo-charged, direct injection diesel engine where the brake thermal efficiency, (BTE) or brake specific fuel consumption, (BSFC) was compared with that of ethanol-diesel or methanol-diesel blends in another study by other authors. The test blends used were B5, B10 and B20 (where B5 is 5% n-butanol by volume and 95% diesel fuel-DF). In this study, the BTE was higher and the BSFC improved more than in the other study. Because of improved BTE with increasing brake mean effective pressure, BMEP, the BSFC reduced, however the increased shared volume of n-butanol in DF increased BSFC. Adding n-butanol in DF slightly derated the torque, brake power output with increasing speed, and caused a fall in exhaust gas temperatures, (EGT) which improves the volumetric efficiency and reduces compression work. Therefore, a small-shared volume of n-butanol in DF fired in a turbo-charged diesel engine performs better in terms of BTE and BSFC than that of ethanol or methanol blending in DF.

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“…Then, the coefficients of variation of combustion characteristic parameters such as the peak values of CP and IHRR, along with the corresponding crank angles of peak CP and peak IHRR can be calculated by Eq. (1).…”

Section: Cyclic Irregularity Of Engine Fuelled With N-butanol Blendsmentioning

confidence: 99%

“…Recently, considerable attention has been paid to bio-fuel, which processes the added advantages of being renewable. Especially, bio-butanol has proved to be a very promising bio-fuel with the ability to completely replace or partially substitute for both gasoline and diesel [1]. Zeng et al [2] introduced the favourable properties of butanol (nbutanol and iso-butanol) as vehicle alternative fuel: widespread sources, high energy content, high boiling point, high octane number, low vapour pressure as well as low corrosiveness.…”

Section: Introductionmentioning

confidence: 99%

Combustion Characteristics and Cyclic Irregularity of an EFI Gasoline Engine Fueled with n-Butanol/gasoline Blends

Qin

Tan

et al. 2014

Int. J. Thermo

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An experimental study was conducted to evaluate the combustion characteristics of blends of n-butanol to gasoline with volume ratios of 0%, 20%, 50%, and 85% in addition to neat n-butanol on an electronic fuel injection (EFI) gasoline engine. Without any modifications to the original engine, the tests were carried out using the above five test fuels, with the engine working at maximum torque speed (3000 rpm) and four loads (25%, 50%, 75% and 100% of the maximum torque). The combustion characteristics including cylinder pressure, instantaneous and cumulative heat release were analysed. The test results show that all the peak values of cylinder pressure (CP), pressure rise rate (PRR), instantaneous heat release rate (IHRR) as well as total heat release of n-butanol/gasoline blends are lower than those of gasoline, and the higher the percentage of n-butanol is, the larger the reduction becomes. The crank angles of the peak values of CP, PRR and IHRR are larger than those of gasoline, whereas the crank angle of the total heat release is smaller than that of gasoline. The cyclic irregularity of n-butanol/gasoline bends is higher than that of gasoline. Therefore, the combustion of n-butanol/gasoline blends becomes mild, which further gives the benefit of reducing NO X emissions. However, the spark timing of the prototype should be advanced more in order to avoid power decreasing of n-butanol /gasoline blends.

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Investigation of the performance and emissions of bus engine operating on butanol/diesel fuel blends

Cited by 277 publications

References 37 publications

LHV predication models and LHV effect on the performance of CI engine running with biodiesel blends

LHV predication models and LHV effect on the performance of CI engine running with biodiesel blends

Performance Characteristics of n-Butanol-Diesel Fuel Blend Fired in a Turbo-Charged Compression Ignition Engine

Combustion Characteristics and Cyclic Irregularity of an EFI Gasoline Engine Fueled with n-Butanol/gasoline Blends

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