Dizel-biyodizel karışımına karbon nanotüp katkısının motor performansı ve egzoz emisyonlarına etkisinin incelenmesi

Yıl 2023, Cilt: 38 Sayı: 2, 1055 - 1064, 07.10.2022

Elif Sürer , Hamit Solmaz , Emre Yılmaz , Alper Calam , Duygu İpci

https://doi.org/10.17341/gazimmfd.741177

Öz

Çevresel kirlenmenin yol açtığı endişelerin giderek artması, içten yanmalı motorlarda daha temiz ve yenilenebilir yakıtların kullanımını arttırmıştır. Biyodizel pek çok ülkede dizel motorlarda alternatif yakıt olarak kullanılmaktadır. Bununla birlikte, dizel yakıtı ile karşılaştırıldığında biyodizelin yüksek viskozitesi ve buna bağlı olarak daha kötü atomizasyon karakteristiği kullanım alanının sınırlı kalmasına neden olmaktadır. Biyodizelin bu özelliklerinin iyileştirilebilmesi amacıyla çeşitli katkı maddeleri kullanımı üzerine araştırmalar gerçekleştirilmiştir. Bu çalışmada, karbon nanotüp katkı maddesinin, biyodizel-dizel yakıtı ile çalışan tek silindirli direkt enjeksiyonlu bir dizel motorunda performans ve emisyon karakteristiklerine etkileri incelenmiştir. Tam yükte motor hızına bağlı olarak gerçekleştirilen deneylerde, termik verim, motor gücü ve torku ile egzoz emisyonları incelenmiştir. Maksimum tork devrinde silindir içi basınç ve ısı dağılım oranı da analiz edilmiştir. Karbon nanotüp katkı maddesinin yanma başlangıcını öne aldığı ve termik verimi iyileştirdiği belirlenmiştir. Maksimum termik verim 100 ppm karbon nanotüp katkısı kullanıldığında %39,3 olarak elde edilmiştir. Karbon nanotüp katkı maddesinin CO, HC ve is emisyonlarını azalttığı ancak motor performansının iyileşmesine bağlı olarak NOx emisyonlarını arttırdığı belirlenmiştir. 100 ppm karbon nanotüp katkısının NOx emisyonlarını yaklaşık %11 arttırdığı, buna karşın CO, HC ve is emisyonları %20, %26 ve %7,9 oranında azalttığı tespit edilmiştir.

Anahtar Kelimeler

Biyodizel, Egzoz Emisyonları, Karbon Nanotüp, , Motor Performansı, Yanma Analizi

Destekleyen Kurum

Gazi Üniversitesi

Proje Numarası

07/2019-14

Teşekkür

Bu çalışma Gazi Üniversitesi Bilimsel Araştırma Projeleri (BAP) tarafından desteklenen 07/2019-14 numaralı projenin katkılarıyla gerçekleştirilmiştir. Yazarlar olarak Gazi Üniversitesi’ne katkılarından dolayı teşekkür ederiz.

Kaynakça

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