Doğan ŞİMŞEK, Faruk ORAL, Niyazi Yılmaz ÇOLAK

TEK SİLİNDİRLİ BUJİ ATEŞLEMELİ MOTORLARDA BENZİN-PROPANOLHEKZAN YAKIT KARIŞIMLARININ MOTOR PERFORMANS VE EMİSYONLARINA ETKİSİ

Bu çalışmada, buji ateşlemeli bir motorda benzin alkol karışımına, hekzan (C6H14) ilavesinin motor performansve emisyonlarına etkisi incelenmiştir. Yapılan çalışma iki aşamada gerçekleştirilmiştir. İlk aşamada benzin yakıtıiçerisine %20 oranında n-propanol ve izo-propanol alkolü ilave edilmiş ve motor performansı açısındandeğerlendirilmiştir. İkinci aşamada belirlenen yakıt karışımına % 1-3 oranında hekzan ilave edilmiş ve motorperformans ve emisyonlarına etkisi incelenmiştir. Çalışmanın ilk aşamasında elde edilen sonuçlarda, benzin içerisineilave edilen iso-propanol alkolü ile motor performansında n-propanol alkolüne göre iyileşme olduğu görülmüştür.İkinci aşama sonuçlarında ise iso-propanol ilave edilen yakıt karışımına %1 oranında hekzan ilave edilmesi ile motormomentinde ve gücünde önemli bir değişikliğin olmadığı, özgül yakıt tüketiminde (ÖYT) iyileşme olduğugörülmüştür. Artan hekzan ilavesi ile motor performansının kötüleştiği belirlenmiştir. Elde edilen emisyonsonuçlarında, %1 hekzan ilave edilmesi ile benzin yakıtına göre HC ve CO emisyonlarında azalmanın olduğu, NOXemisyonlarında önemli bir değişikliğin olmadığı, CO2 emisyonlarında ise artış olduğu görülmüştür.

THE EFFECT ON ENGINE PERFORMANCE AND EMISSIONS OF GASOLINEPROPANOL-HEXANE FUEL BLENDS ON SINGLE CYLINDER SPARK-IGNITION ENGINES

In this study, the effect of the addition of small amounts of hexane (C6H14) to the gasoline alcohol mixture in a spark ignition engine is investigated on engine performance and emissions. In the first stage, 20% n-propanol and iso-propanol alcohol are added to the gasoline fuel and evaluated for engine performance. In the second stage, 1-3% of hexane is added to the fuel mixture, and its effect on engine performance and emissions is investigated. In results of the first stage, it is seen that gasoline with iso-propanol added to gasoline improved engine performance compared to n-propanol alcohol. In results of the second stage, there is not any significant change in engine torque and power for adding 1% hexane to the fuel mixture that has iso propanol, but there is a better change in specific fuel consumption (SFC). It is determined that engine performance is worsened with the addition of more hexane. In the emission results, it is observed that the addition of 1% hexane decreased the HC and CO emissions compared to gasoline fuel, increased the CO2 emissions and did not change NOX emissions.

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