NUMERICAL INVESTIGATION ON THE COMBUSTION CHARACTERISTICS A DIESEL ENGINE FUELLED BIODIESEL B20

Autor/autori: * Mohanad Aldhaidhawi a,b, Radu Chiriac b, Viorel Badescu b , A A Alfaryjat b


Abstract: The increasing costs and depletion of fossil fuels, as well as increased awareness of the g lobal concern regarding air p ollution caused by the extensive use of petroleum fuels in internal c ombustion engines are p rompting researchers to increase their investigations into alternative f uels that should be available a nd environmentally friendly. Among alternative fuels, Biodiesel is considered as sustainable, and the most promising fuel for compression ignition engines. The o bjective of this paper is to numerically study the effect of Biodiesel B20 on ignition delay, c ombustion duration, peak fire p ressure and peak fire temperature at engine speeds of 1000 rpm t o 2400 rpm, in increments of 200 rpm, and full load condition. A four cylinder, four stroke, direct injection tractor Diesel engine was modelled by using the AVL B oost software. The s imulation results revealed that Biodiesel B20 reduces ignition d elay time and combustion duration, exhibits lower peak fire pressure and peak fire temperature at low engine speeds, and higher ones at higher engine speeds, compared to Diesel fuel

Keywords: Biodiesel B20, Diesel engine, Ignition delay, combustion duration .

 

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