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- W2241408049 abstract "Natural gas plays an important role as an alternative fuel for gasoline and diesel engines. It has a promising future especially with the world crisis in fuel and the lower prices of natural gas compared to the prices of gasoline and diesel fuels. It can be used as a sole fuel in spark ignition engines because it has nearly similar properties as gasoline, but in diesel engines it is used as a main fuel while the diesel fuel is injected to the combustion chamber as a pilot fuel to be an ignition source. This paper investigates the performance of a small dual fuel engine where a single cylinder, four stroke water cooled diesel engine is converted to run on a dual fuel of diesel and compressed natural gas (CNG). An exhaust gas recycling system is used to introduce two ratios of EGR (Exhaust gas recirculation) to the engine. Effects of percentage of natural gas content and EGR ratio on engine performance and emissions are investigated for different engine loads.Based on the obtained experimental results, it can be concluded that the total reduction in engine thermal efficiency increases as the ratio of the used natural gas increases. A maximum reduction of about 5 % in engine efficiency is recorded when 80% of diesel fuel is replaced by natural gas to deliver the same engine power. Also, NOx emissions are decreased while CO is increased with utilization of EGR.Ozet: Dogal gaz benzinli ve dizel motorlar icin alternatif bir yakit olarak onemli bir role sahiptir. Ozellikle yakitlar konusunda dunyada yasanan krizle birlikte ve benzin ile dizel yakitlarinin fiyatlariyla karsilastirildiginda ucuz fiyatiyla umut vadeden bir gelecege sahiptir. Benzinli motorlarda tek basina yakit olarak kullanilabilir cunku benzin ile benzer ozelliklere sahiptir fakat dizel motorlarinda dizel yakit atesleyici on yakit olarak kullanilirken CNG ana yakit olarak kullanilabilir. Bu makale, tek silindirli, dort zamanli su sogutmali dizel motorunun dizel yakit ve sikistirilmis dogal gazin (CNG) birlikte yakit olarak kullanilabildigi bir motora donusturuldugu durum icin kucuk bir cift yakitli motorun performansini incelemektedir. Motora EGR’nin (Egzoz gazi resirkulasyonu) iki oranini uygulamak icin bir egzoz gazi resirkulasyon sistemi kullanilmistir. Farkli motor yukleri icin dogal gaz iceriginin farkli yuzdelerinin ve EGR oranlarinin motor performansina ve egzoz emisyonlarina etkileri incelenmistir. Elde edilen deneysel sonuclar temelinde kullanilan dogal gaz orani arttikca motor termal verimindeki azalmanin arttigi sonucuna varilabilir. Ayni motor gucunu saglamak icin dizel yakitin %80’i dogal gaz ile yer degistirildiginde maksimum %5 motor verimi azalmasi kaydedilmistir. Ayrica EGR kullanildiginda NOx emisyonlari azalirken CO artmaktadir." @default.
- W2241408049 created "2016-06-24" @default.
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- W2241408049 date "2014-12-30" @default.
- W2241408049 modified "2023-09-25" @default.
- W2241408049 title "An experimental investigation on performance and emissions of a single cylinder dual fuel Diesel-CNG engine combined with EGR" @default.
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- W2241408049 doi "https://doi.org/10.18245/ijaet.78776" @default.
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