Numerical optimization and experimental investigation of renewable diethyl ether-fueled off-road CI engines for sustainable transportation

Year 2024, Volume: 44 Issue: 1, 117 - 128, 03.06.2024

M. Gowthama Krishnan Praveen Rajendran , V. Pugalendhi S. Ram Prakash

https://doi.org/10.47480/isibted.1494153

Abstract

Cleaner energy generation on light-duty off-road diesel engines is one of the objectives of this study, which utilizes renewable diethyl ether (DEE) as a replacement for diesel to minimize the reliance on fossil diesel fuel. In an air-cooled single-cylinder diesel engine, various DEE mixes of 5, 10, 15, 20 and 25% were attempted and evaluated under varying loads (0, 25, 50, 75 and 100%) in an effort to enhance the performance and emission characteristics of agriculture diesel engines and lower the environmental effect of harmful emissions. The injection pressure was optimized using computational fluid dynamics (CFD), and performance and emission outcomes were optimized through response surface methodology (RSM) techniques. The experimental results found that brake thermal efficiency and specific fuel consumption were enhanced for a higher proportion of DEE blends under increasing loads. In addition, increasing the engine load decreased CO emissions while increasing carbon dioxide (CO2), hydrocarbon (HC), and nitrogen oxide (NOx) emissions. Reduced CO, NOx, and HC emissions and increased CO2 were realized in the blended fuel samples compared to those of pure diesel fuel at increasing DEE percentages. In summary, the utilization of a 15% DEE blend and the optimization of the injection pressure to 210 bar resulted in a notable improvement of 10% in thermal efficiency and a decrease in emissions by 5% when compared to other parameters.

Keywords

Diesel engine, diethyl ether, performance, emission, NOx, CFD

Sürdürülebilir ulaşım için yenilenebilir dietil eter yakıtlı arazi dışı CI motorlarının sayısal optimizasyonu ve deneysel incelenmesi

Abstract

Fosil dizel yakıtına bağımlılığı en aza indirmek için dizel yerine yenilenebilir dietil eter (DEE) kullanan bu çalışmanın amaçlarından biri, hafif hizmet arazi dizel motorlarında daha temiz enerji üretimidir. Hava soğutmalı tek silindirli bir dizel motorda, %5, 10, 15, 20 ve 25'lik çeşitli DEE karışımları denenmiş ve değişen yükler altında (%0, 25, 50, 75 ve 100) değerlendirilmiştir. Tarımsal dizel motorların performans ve emisyon özelliklerini azaltarak zararlı emisyonların çevresel etkisini azaltır. Enjeksiyon basıncı, hesaplamalı akışkanlar dinamiği (CFD) kullanılarak optimize edildi ve performans ve emisyon sonuçları, yanıt yüzeyi metodolojisi (RSM) teknikleri aracılığıyla optimize edildi. Deney sonuçları, artan yükler altında daha yüksek oranda DEE karışımı için fren termal verimliliğinin ve spesifik yakıt tüketiminin arttığını buldu. Ayrıca motor yükünün arttırılması CO emisyonlarını azaltırken karbondioksit (CO2), hidrokarbon (HC) ve nitrojen oksit (NOx) emisyonlarını artırdı. Artan DEE yüzdelerinde, saf dizel yakıtla karşılaştırıldığında, harmanlanmış yakıt örneklerinde CO, NOx ve HC emisyonlarında azalma ve CO2 artışı elde edildi. Özetle, %15 DEE karışımının kullanılması ve enjeksiyon basıncının 210 bar'a optimizasyonu, diğer parametrelerle karşılaştırıldığında termal verimlilikte %10'luk kayda değer bir iyileşme ve emisyonlarda %5'lik bir azalma ile sonuçlandı.

Keywords

Dizel motor, dietil eter, performans, emisyon, NOx, CFD

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