Ali AYBEK, Selçuk ARSLAN, Emrullah BAŞER, Mustafa ÜÇGÜL

Determination of the effect of biodiesel use on power take-ofperformance characteristics of an agricultural tractor in a test laboratory

Laboratuar test koşullarında yapılan traktör performans testleri, traktörlerin güçlü ve zayıf yönlerininkarşılaştırılmasında kullanılan performans karakteristiklerinin belirlenmesini sağladığı için önem taşımaktadır. Buçalışmanın amacı, dizel yakıtının (B0) ve kanola yağından elde edilmiş üç faklı katkılı biyodizel yakıtının (B10, B20, B30) traktör kuyruk mili (PTO) performans karakteristiklerine etkisini belirlemektir. İncelenen performans karakteristikleri kuyruk mili gücü, motor torku, motor yakıt tüketimi ve özgül yakıt tüketimi olup testler bir tarım traktörü (Massey Ferguson 3056 2WD) kullanılarak T.C. Tarım ve Köy İşleri Bakanlığı Tarım Alet ve Makinaları Test Merkezi Müdürlüğü (TAMTEST) test laboratuarında yapılmıştır. Maksimum kuyruk mili gücü (32.35 ± 0.06 kW), minimum yakıt tüketimi (11.08 ± 0.13 L $h^ {-1}$ ) ve minimum özgül yakıt tüketimi (288.72 ± 0.11 g k$W^ {-1} h^ {-1}$ ) B20 yakıtı kullanılarak 2100 mi$n^ {-1}$ motor devrinde bulunmuştur. Nomimal motor devri petrodizel için 2200 mi$n^ {-1}$ iken tüm biyodizel karışımları için en büyükmotor gücü 2100 mi$n^ {-1}$ motor devrinde bulunmuştur. Biyodizel karışımları kullanılarak 2100 mi$n^ {-1}$ ’da yakıt tüketimi % 2-4 azalmışsa da ortalama yakıt tüketimi istatistiksel olarak farksız bulunmuş (P > 0.05), 2200 mi$n^ {-1}$ ’da ise petrodizel kullanımında ortalama yakıt tüketimi istatistiksel olarak daha yüksek bulunmuştur (P < 0.05). En büyük tork ve endüşük özgül yakıt tüketimini sağlayan B20’nin (% 20 biyodizel + % 80 petrodizel) petrodizel yakıtına göre daha verimlibir alternatif olabileceği sonucuna varılmıştır.

Biyodizel kullanımının test laboratuarında bir tarım traktörünün kuyruk mili performans değerlerine etkisinin belirlenmesi

Tractor performance tests conducted under laboratory test conditions are important because these tests de- termine the performance characteristics used to compare strengths and weaknesses of tractors. The objective of thisstudy was to determine the ef ect of diesel fuel (B0) and 3 dif erent biodiesel blends made of canola oil (B10, B20, B30) on tractor power take-of(PTO) performance characteristics. Performance characteristics studied were PTO power, engine torque, engine fuel consumption, and specii c fuel consumption on an agricultural tractor (Massey Ferguson 3056 2WD) at the test laboratory of the Directorate of Agricultural Machinery Test Center (TAMTEST), Ministry ofAgriculture and Rural Af airs, Ankara, Turkey. The maximum PTO power (32.35 ± 0.06 kW), the minimum specii c fuel consumption (288.72 ± 0.11 g k$W^ {-1} h^ {-1}$ ), and the minimum fuel consumption (11.08 ± 0.13 L $h^ {-1}$ ) were achieved by usingB20 at an engine speed of 2100 mi$n^ {-1}$ . The nominal engine speed for petrodiesel was 2200 mi$n^ {-1}$ , whereas the greatest engine power was accomplished at 2100 min-1 for all biodiesel blends. Even though 2%-4% reduction was obtained in fuel consumption by using biodiesel blends at 2100 mi$n^ {-1}$ , the mean fuel consumption was statistically insignii cant (P >0.05), whereas average fuel consumption was higher with petrodiesel at 2200 mi$n^ {-1}$ (P < 0.05). It was concluded that B20 (20% biodiesel + 80% petrodiesel) could be a more eicient alternative to petrodiesel fuel

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