Experimental examination of the effects of military aviation fuel JP-8 and biodiesel fuel blends on the engine performance, exhaust emissions and combustion in a direct injection engine

Uyumaz, Ahmet; Solmaz, Hamit; Yılmaz, Emre; Yamık, Hasan; Polat, Seyfi

doi:10.1016/j.fuproc.2014.07.013

Cited by 77 publications

(24 citation statements)

References 25 publications

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“…Therefore, the difference in NO x values between various fuel blends was not big as could be expected at a high speed. The obtained results differ from those measured on a single cylinder engine with aviation JP-8 fuel and sunflower methyl ester blends, where the maximum cylinder pressure, and temperature related NO x emissions increased, while the CO emitted decreased as the amount of biodiesel in the fuel blends increased for full (18.75 Nm) engine torque and 2200 rpm speed [28].…”

Section: 5contrasting

confidence: 94%

“…A study conducted on a single cylinder diesel engine at maximum torque speed of 2200 rpm and four loads with JP-8 fuel and sunflower methyl ester blends B25, B50 and B75 showed that the NO x emissions increased, but the CO emissions decreased as the amount of biodiesel fuel increased in the test fuels [28]. However Schihl et al [29] noticed that one particular challenge with using global JP-8 is the lack of or too broad a range of specified combustion affecting properties including ignition quality.…”

Section: Introductionmentioning

confidence: 99%

“…Whereas RME added to jet fuel not only improves the cetane number, but it also modifies the carbon-to-hydrogen ratio, provides fuel-bound oxygen, reduces net heating value, the content of polycyclic aromatics, and improves lubricity of the fuel. Despite a large number of studies conducted in optically-accessible [13,15,[30][31][32], single cylinder engines [23,28,29,33,34], a spherical vessel [35], laboratory furnaces, burners, and afterburners [36] there is a lack of works on a real multi-cylinder diesel engine powered with JP-8 fuel and rapeseed biodiesel blends. The purpose of the research was to study the effect of RME added to JP-8 fuel on the autoignition delay, combustion history, heat release characteristics, engine performance parameters, and exhaust emissions.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Combustion phenomenon, performance and emissions of a diesel engine with aviation turbine JP-8 fuel and rapeseed biodiesel blends

Labeckas

Slavinskas

2015

Energy Conversion and Management

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Section: 5contrasting

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Combustion phenomenon, performance and emissions of a diesel engine with aviation turbine JP-8 fuel and rapeseed biodiesel blends

Labeckas

Slavinskas

2015

Energy Conversion and Management

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“…Furthermore, increased injected fuel allows decreasing in the air to fuel ratio with the increase of engine load. Thus, it causes higher in-cylinder pressure and temperature and NO formation [38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54]. It was found that the lowest NO x emission was measured as 300.95 ppm with D100 at 15.00 Nm engine load.…”

Section: Resultsmentioning

confidence: 99%

Comparison of the combustion, performance, and emission characteristics of inedible Crambe abyssinica biodiesel and edible hazelnut, corn, soybean, sunflower, and canola biodiesels

Uyaroğlu¹,

Uyumaz

Çelıkten

2017

Env Prog and Sustain Energy

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In this study, the effects of hazelnut oil–diesel (H30), corn oil–diesel (C30), soybean oil–diesel (S30), sunflower oil–diesel (Su30), canola oil–diesel (Ca30) and Crambe abyssinica oil–diesel (Cr30) and diesel fuel blends were investigated on combustion characteristics, engine performance and NOx, CO, HC, and soot emissions. A single cylinder, four stroke, direct injection diesel engine was operated at maximum brake torque engine speed of 2200 rpm and 7.5, 11.25, 15, and 18.75 Nm engine loads. Test results showed that thermal efficiency decreased by about 3.1, 6.44, 7.08, 7.40, 8.76, and 11.68% with H30, C30, S30, Su30, Ca30, and Cr30 compared to D100 at full load, respectively. There was no big differences on cylinder pressure between test fuels. However, higher heat release rate was obtained with D100 according to fuel blends due to higher calorific value of D100. Test results also showed that HC, CO, and soot emissions decreased with biodiesel fuel blends compared to diesel fuel for all engine loads while NOx emissions increased. At full load, HC and CO decreased by about 81.2 and 21.5%, respectively, with C30 compared to diesel. Similarly, soot reduced 51.3% with Su30 compared to diesel at the same engine load. However, NOx increased 15.8% with C30 according to diesel at full load. It was concluded that biodiesel–diesel fuel blends can be used efficiently in a diesel engine. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 1438–1447, 2018

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“…Bu durum karbonmonooksit (CO) emisyonlarının artmasına sebep olmaktadır. Çünkü CO emisyonları yanma sonu sıcaklıklarından büyük ölçüde etkilenmektedir [14][15][16][17][18][19]. Bu problemlerin giderilebilmesi için yanmanın kontrollü bir şekilde yavaşlatılması ve ısı yayılım hızının azaltılması gerekmektedir.…”

Section: Gi̇ri̇ş (Introduction)unclassified

Hava Fazlalık Katsayısı ve Oktan Sayısı Değişiminin HCCI Yanma Karakteristiklerine ve Motor Performansına Etkileri

Calam¹,

İçıngür²

2018

Journal of Polytechnic

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Bu makaleye şu şekilde atıfta bulunabilirsiniz(To cite to this article): Calam A. ve İçingür Y. "Hava fazlalık katsayısı ve oktan sayısı değişiminin HCCI yanma karakteristiklerine ve motor performansına etkileri", Politeknik Dergisi, 22(3): 607-618, (2019).Erişim linki (To link to this article): http://dergipark.org.tr/politeknik/archive ÖZ Homojen dolgulu sıkıştırma ile ateşlemeli (HCCI) motorlar yüksek termik verimleri ve düşük egzoz emisyonları nedeniyle mevcut içten yanmalı motorlara alternatif bir yanma modelidir. Bu çalışmada, port tipi enjeksiyonlu, tek silindirli bir HCCI motorda hava fazlalık katsayısının ve oktan sayısının HCCI yanması üzerine etkileri deneysel olarak incelenmiştir. Deneyler tam yük şartlarında, 60 o C emme havası giriş sıcaklığında ve 800 min -1 motor hızında yapılmıştır. Ayrıca deneyler farklı hava fazlalık katsayılarında yapılmıştır. Oktan sayısının artırılması ile maksimum silindir içi basıncın oluşum noktası daha geç krank açılarında gerçekleşmiştir. Oktan sayısının artırılması yanma süresinin uzamasına neden olmuştur. Hava/ yakıt oranının artması basınç artış oranını azaltmıştır. Hava/yakıt oranının azaltılması silindir içerisine sürülen enerji miktarını artırmıştır. Böylece en yüksek silindir içi basınçlar bu şartlar altında elde edilmiştir. En yüksek indike termik verim RON60 yakıtı kullanımında, hava yakıt oranının 2,14 olduğu şartlarda % 40,6 olarak tespit edilmiştir. Hava yakıt oranının azaltılması yanmanın erken gerçekleşmesini sağlamıştır. Bu nedenle net iş azalmıştır. Böylece indike termik verim de azalmıştır.Anahtar Kelimeler: Hava yakıt oranı, HCCI, yanma, RON20, RON60, egzoz emisyonları. ABSTRACTHomogeneous compression ignition (HCCI) engines are an alternative combustion model to existing internal combustion engines due to their high thermal efficiency and low exhaust emissions. In this study, the effects of air fuel ratio and octane number on combustion and engine performance characteristics were investigated with port type injection single cylinder HCCI engine. Experiments were carried out at full load conditions, intake temperature of 60 o C and 800 rpm engine speed. Also, experiments were carried out with different air excess coefficients. The maximum in-cylinder pressure occured at a later crank angle by increasing the number of octane. Increasing the octane number has caused the increase of the combustion duration. The increase of air fuel ratio decreases the pressure rise rate. Decreases of air fuel ratio has increased the amount of injected energy to the cylinder. So that, the highest in-cylinder pressures are obtained under these conditions. The highest indictical thermal efficiency 40.6 %, provided that the air fuel ratio was 2.14 with using RON60 fuel. Decreases of air fuel ratio caused the combustion advance. For this reason net work decreased. Thereby, indicated thermal efficiency decreased.

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Experimental examination of the effects of military aviation fuel JP-8 and biodiesel fuel blends on the engine performance, exhaust emissions and combustion in a direct injection engine

Cited by 77 publications

References 25 publications

Combustion phenomenon, performance and emissions of a diesel engine with aviation turbine JP-8 fuel and rapeseed biodiesel blends

Combustion phenomenon, performance and emissions of a diesel engine with aviation turbine JP-8 fuel and rapeseed biodiesel blends

Comparison of the combustion, performance, and emission characteristics of inedible Crambe abyssinica biodiesel and edible hazelnut, corn, soybean, sunflower, and canola biodiesels

Hava Fazlalık Katsayısı ve Oktan Sayısı Değişiminin HCCI Yanma Karakteristiklerine ve Motor Performansına Etkileri

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