FARKLI ORANLARDA İZOOKTAN-DİZEL YAKITI İLE BESLENEN BİR RCCI MOTORUNUN MOTOR PERFORMANSI VE EMİSYONLARI ÜZERİNE DENEYSEL BİR ÇALIŞMA

Yıl 2024, , 352 - 362, 31.08.2024

Müjdat Fırat , Mutlu Okcu , Yasin Varol

https://doi.org/10.54365/adyumbd.1459930

Öz

Yapılan çalışmada deney motoru, modifiye edilerek RCCI konseptine göre çalışır hale getirilmiş tek silindirli dizel motordur. HRF olarak dizel ve LRF olarak ta izooktan (%15, %30, %45 ve %60 karışım oranlarında) kullanılmıştır. Deneyler üç farklı yükte (%20, %40 ve %60) ve 2400 (d/d) sabit motor devrinde gerçekleştirilmiştir. %20 yükte basınç pik değerinde LRF kullanımı ile önemli bir değişim olmamakla birlikte, motor yükü ve LRF karışım oranı arttıkça basınç ve HRR pik değeri artmış, bu değerlerin oluştuğu krank açısı ilerlemiştir. Motor performansı için önemli olan OİB’de LRF oranına bağlı olarak kısmi azalmalar görülmesine rağmen, %15 LRF oranı kullanımının tüm yüklerde OİB’nin dizel yakıtlı deneyde oluşan değerle hemen hemen aynı seviyede oluştuğu belirlenmiştir. LRF kullanımı ile düşük yükte NOx emisyonu, yüksek yükte CO emisyonu başarılı bir şekilde azaltılırken, HC emisyonu tüm deneylerde artış göstermiştir. Duman opaklığı tüm yük deneylerinde LRF ile azaltılırken, en büyük azalma %60 yükte yaklaşık olarak %97 oranında gerçekleşmiştir.

Anahtar Kelimeler

RCCI, Emisyon, İzooktan, Yüksek oktanlı yakıt, Dizel motor

Etik Beyan

Çalışmada etik beyan bulunmamaktadır.

Destekleyen Kurum

Türkiye Bilimsel ve Teknolojik Araştırma Kurumu (TÜBİTAK)

Proje Numarası

118M650

Teşekkür

Bu çalışma Türkiye Bilimsel ve Teknolojik Araştırma Kurumu (TÜBİTAK) (proje no.118M650) tarafından desteklenmiştir

AN EXPERIMENTAL STUDY ON ENGINE PERFORMANCE AND EMISSIONS OF A RCCI ENGINE FUELLED WITH DIFFERENT RATIOS OF ISOOCTANE-DIESEL FUEL

Öz

In the conducted study, a single-cylinder diesel engine was modified to operate according to the RCCI concept. Diesel was used as HRF and isooctane (in mixture ratios of 15%, 30%, 45%, and 60%) as LRF. Experiments were conducted at three different loads (20%, 40%, and 60%) and at a constant engine speed of 2400 rpm. While there was no significant change in the peak pressure value with the use of LRF at 20% load, as the engine load and LRF mixture ratio increased, both pressure and HRR peak value increased, and these values occurred at an advanced crank angle. Although partial decreases depending on the LRF ratio were observed in the IMEP, which is important for engine performance, it was determined that the use of 15% LRF ratio resulted in IMEP levels almost similar to those obtained in diesel-fueled experiments at all loads. With the use of LRF, NOx emissions were successfully reduced at low loads, and CO emissions were reduced at high loads, while HC emissions increased in all experiments. Smoke opacity was reduced with LRF at all load experiments, with the greatest reduction occurring at 60% load, approximately by 97%.

Anahtar Kelimeler

RCCI, Isooctane, Emissions, Diesel engine, High octane fuel

Proje Numarası

118M650

Kaynakça

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