%10 Balık Yağı Biyodizeli-%90 Dizel Yakıt Karışımı İle Çalışan Direkt Enjeksiyonlu Bir Dizel Motorunda Yanma ve Performans Karakteristiklerinin İncelenmesi

Öz

Bu çalışmada %10 balık yağı biyodizeli-%90 dizel yakıt karışımı ile  (B10) çalışan direkt enjeksiyonlu bir dizel motorunda yanma ve motor performansı deneysel olarak araştırılmıştır. Bu amaçla deney motoru maksimum tork devri olan 2200 d/d’da 3.75, 7.5, 11.25 ve 15 Nm motor yüklerinde çalıştırılmıştır. Silindir basıncı, ısı dağılımı, yanma süresi, tutuşma gecikmesi, indike termik verim ve özgül yakıt tüketimi gibi yanma ve motor performans parametrelerinin değişimleri incelenmiştir. Balık yağı biyodizeli ile silindir basıncı ve ısı dağılımın arttığı yanma süresinin kısaldığı görülmüştür. Deney sonuçlarında balık yağı biyodizeli ile silindir içi sıcaklığın arttığı görülmüştür. Balık yağının düşük ısıl enerjisinden dolayı biyodizel ile indike ortalama efektif basınç ve indike termik verim azalmıştır. 11.25 Nm motor yükünde dizel yakıtı ile %28.27 termik verim elde edilirken B10 yakıtı ile %25.58 olarak belirlenmiştir. Özgül yakıt tüketimi ise aynı motor yükünde dizel yakıtı ile 0.162 kg/kWh hesaplanırken B10 yakıtı ile yaklaşık %32 artarak 0.214 kg/kWh olarak belirlenmiştir. Deney sonuçları balık yağı biyodizeli-dizel yakıt karışımının dizel motorda değişikliğe gidilmeden kullanılabileceğini ve yanma karakteristiklerinin iyileştiğini göstermiştir. 

Anahtar Kelimeler

• Balık yağı biyodizeli,Dizel motoru,Yanma

An Investigation of Combustion and Performance Characteristics of a Direct Injection Diesel Engine Fuelled With The Blends of 10% Fish Oil Biodiesel and 90% Diesel Fuel

Abstract

In the current study, combustion and performance characteristics of a direct injection diesel engine fuelled with the blends of 10% fish oil biodiesel and 90% diesel fuel were investigated experimentally. For this reason, the test engine was run at 2200 rpm and 3.75, 7.5, 11.25 and 15 Nm engine loads. The variations of in-cylinder pressure, heat release, combustion duration, ignition delay, thermal efficiency and specific fuel consumption were observed. In-cylinder pressure and heat release increased while combustion duration was shortened with fish oil biodiesel. Test results showed that in-cylinder temperature increased with fish oil biodiesel. Indicated mean effective pressure (imep) and indicated thermal efficiency (ITE) decrased owing to lower calorific value of fish oil biodiesel. ITE was determined as 28.27% with diesel whereas 25.58% with B10 at 11.25 Nm engine load. Specific fuel consumption (SFC) was computed as 0.162 kg/kWh with diesel while 0.214 kg/kWh with B10 with the increase of about 32%. Test results showed that the blends of fish oil biodiesel-diesel can be utilized without modifications in diesel engines and combustion characteristics were improved.

Keywords

• Fish oil biodiesel,Diesel engine,Combustion

Kaynakça

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