Seryum Oksit (CeO2) Katkılı Nano Biyodizelin Motor Performansı ve Emisyon Özellikleri Üzerindeki Etkisi
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Keywords:
Biyodizel, Seryum Oksit Nanopartikül, Egzoz Emisyonu, Motor PerformansıAbstract
Bu çalışma, düşük oranda seryum oksit (CeO2) nano katkı maddesinin kanola yağı biyodizeli (K0)
içerisine ilave edilerek motor performansı ve egzoz emisyonlarına etkisinin belirlenmesini
amaçlamaktadır. Çalışmada 50ppm (KCe50) ve 75ppm (KCe75) olmak üzere iki farklı konsantrasyonda
CeO2 nanopartikülleri biyodizel içerisine eklenmiştir. 4 farklı motor yükünde gerçekleştirilen deneysel
çalışma bulgularına göre, biyodizel içerisine CeO2 eklenmesi özgül yakıt tüketimini düşük motor yükünde
(10Nm) KCe50 yakıtında %4,05 ve KCe75 yakıtında %5,74 azaltmıştır. Yük artışıyla birlikte silindir
içerisindeki türbülans ve sıcaklık arttığından yakıt tüketimindeki azalma tespit edilmiştir. 40 Nm yükte
K0 yakıtına göre termik verimdeki artış sırasıyla KCe50 yakıtında %2,07 ve KCe75 yakıtında %4,51
olmuştur. CeO2 nanopartikülü yapısında bulunan oksijen molekülleri CO moleküllerini CO2’ye
dönüşümünü desteklemiş 10 Nm yükte CO emisyonlarında KCe50 ve KCe75 yakıtlarında sırasıyla
%53,22 ve %58,30 azalmıştır. Yük artışıyla bu azalma hızı düşmüş ve tam yanma ürünü olan CO2’nin
artışına neden olmuştur. Nano katkı ilavesi biyodizel yakıtının atomizasyon özelliklerini iyileştirmiş buna
bağlı olarak silindir içerisin de yanmayı olumlu etkileyerek is emisyonlarının önemli oranlarda
azalmasına NOx emisyonlarının ise artışına neden olmuştur.
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