Emme Havası Giriş Sıcaklığı ve Ön Karışımlı Yakıt Oranının RCCI Yanma Karakteristiklerine ve Motor Performansına Etkileri

Yıl 2017, Cilt: 20 Sayı: 3, 689 - 688, 15.09.2017

Ahmet Uyumaz , Hamit Solmaz

https://doi.org/10.2339/politeknik.339401

Cited By: 2

Öz

Bu çalışmada emme
havası giriş sıcaklığı ve ön karışım yakıt oranının reaktif kontrollü
sıkıştırma ile ateşlemeli (RCCI) yanma karakteristikleri ve motor performansı
üzerindeki etkileri deneysel olarak araştırılmıştır. Bu amaçla dört silindirli,
dört zamanlı, direkt enjeksiyonlu benzinli motor RCCI modda 1000 d/d’da 40^°C,
60^°C ve 80^°C emme havası giriş sıcaklıklarında PRF20,
PRF40 ve PRF 60 yakıtları ile stokiyometrik karışım oranında ve tam yükte
çalıştırılmıştır. Emme havası giriş sıcaklığı ve ön karışım oranı arttıkça
maksimum silindir basıncının ve ısı dağılımının arttığı, yanmanın avansa
alındığı görülmüştür. Bunun tersine sabit emme havası giriş sıcaklığında ön
karışım oranı arttıkça yanmanın rötara alındığı görülmüştür. Maksimum indike
termik verim 60 ^°C emme giriş havası sıcaklığında PRF20 yakıtına
göre PRF60 yakıtı ile %7.4 artarak %32.3 elde edilmiştir. Motor performansı
açısından en uygun yakıtın PRF60 olduğu belirlenmiştir. Deney sonuçları RCCI
yanmasının emme havası giriş sıcaklığı ve ön karışım yakıt oranından hassas bir
şekilde etkilendiğini, yanma fazının emme giriş sıcaklığı ve ön karışım yakıt
oranı ile kontrol edilebileceğini göstermiştir.

Anahtar Kelimeler

Reaktif kontrollü sıkıştırma ile ateşlemeli yanma (RCCI), emme havası giriş sıcaklığı, ön karışım yakıt oranı, yanma, motor performansı

Kaynakça

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