A Comparative Study on the Usage of RON68 and Naphtha in an HCCI Engine

Abstract

The depletion of fossil fuels as a result of excessive use and increased environmental pollution brought up the research of environmentally conscious and renewable alternative fuels. The alternative fuel to be considered for internal combustion engines should not decrease the performance of the engine too much and positively affect the exhaust emissions. It is also important that this fuel should provide some specifications such as easy producibility, low cost, availability and usability in internal combustion engine without modification. Low temperature combustion modes are promising technologies providing nearly zero NOx and soot emissions and currently a lot of researcher has focused on this technology. In this experimental study naphtha was tested in an HCCI engine. In order to examine and understand the effects of the naphtha on HCCI mode a comparison study was also conducted by using RON68. Maximum imep was computed as 3.23 and 3.32 bar with RON68 and naphtha respectively at λ=1.7. SOC was determined 5.4 °CA and 5.76 °CA ATDC with naphtha and RON68 at λ=2. CA50 is far away from TDC fact that net work decreases. Maximum ITE was calculated as 45.42% and 46.07% at λ=2 with RON68 and naphtha respectively.

Performance of a single cylinder direct injection 4-stroke diesel engine under effect of using diesel and naphtha blends

“…Moreover, diesel engines boast the highest heat efficiency among internal combustion engine types, thanks to their high compression ratio, making them versatile for various applications and sizes. However, with the increasing global population and automobile usage, there is a growing need to reduce fossil fuel consumption (Pan et al, 2020;Yilmaz, 2020).…”

Homojen Dolgulu Sıkıştırma ile Ateşlemeli Bir Motorda N-Heptan-Tetrahidrofuran Karışımlarının Yanma, Performans Ve Emisyonlara Etkisi

“…Günümüzde araştırmacılar elektrikli araç teknolojisi ve alternatif yanma modelleri üzerine birçok çalışma yapmaktadır [11][12][13][14][15]. Düşük sıcaklık yanmasına sahip homojen dolgulu sıkıştırma ile ateşlemeli (HCCI) motorlar son yıllarda araştırmacıların oldukça ilgisini çeken yeni bir yanma modelidir [16][17][18][19]. HCCI motorların en önemli özelliği hava yakıt karışımının SI motorlarda olduğu gibi önceden hazırlanması ve yanmanın CI motorlarda olduğu gibi sıkıştırma zamanı sonunda basınç ve sıcaklığın etkisi ile kendiliğinden meydana gelmesidir [20][21][22].…”

Well to Wheel: A life-cycle based analysis of CI engine powered with diesel and various alcohol blends

“…The dominant use of these fuels in the transport sector is currently equivalent to approximately half of the total global oil consumption [2]. As it is well known, fossil-based fuels highly pollute the environment [3][4][5][6][7][8]. For instance, nearly three kilograms of greenhouse gas emissions release into the atmosphere when one-kilogram of diesel fuel is burnt in the internal combustion engines [9].…”