Effect of Diesel-Biodiesel-Methanol Blends on Performance and Combustion Characteristics of Diesel Engine

Year 2021, , 189 - 201, 31.01.2021

Suat Sarıdemir , Gökhan Yıldız , Emrah Hanedar

https://doi.org/10.29130/dubited.763009

Cited By: 9

Abstract

Due to the increase in fossil fuel prices, limited reserves and environmental damage, researchers turned to renewable energy sources. Studies have been conducted on the use of biodiesel to reduce the use of fossil fuels used in vehicles. In this study, biodiesel obtained from cottonseed oil by transesterification method was used as fuel. Cotton oil methyl ester and methanol, different proportions of fuels (diesel fuel (DF), 20% biodiesel (BD20) by volume, 20% methanol (AL20) and derivatives (BD20AL20) were obtained. The effects of DF and other fuels on the combustion and performance characteristics were discussed. The tests were conducted on a single-cylinder diesel engine at the varying engine speeds from 1750 to 3250 rpm with the intervals of 500 rpm. In comparison with that of conventional DF, the BSFC value of BD20, BD20AL20, and AL20 test fuels has exhibited a significant increment with 10.4%, 39%, and 24%, respectively. DF has the highest value with 28.93% BTE. The reason of the high BTE for DF is the heating value, and high-energy content thereof. In comparison with that of DF, the BTE value of BD20, BD20AL20, and AL20 test fuels has exhibited a significant decrease with 6.8%, 16.74% and 9.5%, respectively. Maximum in-cylinder pressure and maximum heat release rate values are observed for the test fuels containing biofuels due to their low cetane number as compared to that of DF.

Keywords

Diesel engine, Methanol, Cottonseed oil methyl ester, Performance, Combustion, Ternary blends

Dizel-Biyodizel-Metanol Karışımlarının Dizel Motorun Performans ve Yanma Özelliklerine Etkisi

Abstract

Fosil yakıt fiyatlarındaki artış, sınırlı rezervler ve çevresel hasar nedeniyle araştırmacılar yenilenebilir enerji kaynaklarına yöneldiler. Taşıtlarda kullanılan fosil yakıtların kullanımını azaltmak için biyodizel kullanımı üzerine çalışmalar yapılmıştır. Bu çalışmada, transesterifikasyon yöntemi ile pamuk tohumu yağından elde edilen biyodizel yakıt olarak kullanılmıştır. Pamuk yağı metil ester ve metanol, farklı oranlarda yakıtlar (dizel yakıt (DF), hacimce %20 biyodizel (BD20), hacimce %20 metanol (AL20) ve türevlerinin üçlü tipi (BD20AL20) elde edildi. DF ve diğer yakıtların yanma ve performans özelliklerine etkileri tartışıldı. Testler, tek silindirli bir dizel motor üzerinde, 1750 ile 3250 rpm arasında değişen motor hızlarında, 500 rpm aralıklarla gerçekleştirildi. Geleneksel DF ile karşılaştırıldığında BD20, BD20AL20 ve AL20 test yakıtlarının BSFC değeri sırasıyla % 10,4,% 39 ve% 24 ile önemli bir artış göstermiştir. DF %28,93 BTE değeri ile en yüksek değere sahiptir. DF için yüksek BTE’nin nedeni, ısıtma değeri ve bunun yüksek enerji içeriğidir. DF ile karşılaştırıldığında BD20, BD20AL20 ve AL20 yakıtlarının BTE değeri sırasıyla %6,8, %16,74 ve %9,5 ile önemli bir düşüş göstermiştir. Biyoyakıt içeren test yakıtlarında, setan sayısının DF’ye göre düşük olması nedeniyle maksimum silindir içi basınç ve maksimum ısı salım hızı değerleri gözlenmektedir.

Keywords

Dizel motor, Metanol, Pamuk yağı metil esteri, Performans, Yanma, Üçlü karışımlar

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