Comparision on dynamic behavior of diesel spray and rapeseed oil spray in diesel engine

Sapit, Azwan and Razali, Mohd Azahari and Hushim, Mohd Faisal and Jaat, Norrizam and Mohammad, Akmal Nizam and Khalid, Amir (2017) Comparision on dynamic behavior of diesel spray and rapeseed oil spray in diesel engine. Journal of Physics: Conference Series, 822 (1). pp. 1-7. ISSN 1742-6588

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Fuel-air mixing is important process in diesel combustion. It significantly affects the combustion and emission of diesel engine. Biomass fuel has high viscosity and high distillation temperature and may negatively affect the fuel-air mixing process. Thus, study on the spray development and atomization of this type of fuel is important. This study investigates the atomization characteristics and droplet dynamic behaviors of diesel engine spray fuelled by rapeseed oil (RO) and comparison to diesel fuel (GO). Optical observation of RO spray was carried out using shadowgraph photography technique. Single nano-spark photography technique was used to study the characteristics of the spray while dual nano-spark shadowgraph technique was used to study the spray droplet behavior. Using in-house image processing algorithm, the images were processed and the boundary condition of each spray was also studied. The results show that RO has very poor atomization due to the high viscosity nature of the fuel when compared to GO. This is in agreement with the results from spray droplet dynamic behavior studies that shows due to the high viscosity, the RO spray droplets are large in size and travel downward, with very little influence of entrainment effect due to its large kinematic energy.

Item Type: Article
Uncontrolled Keywords: Diesel spray; Atomization; Biomass fuel; Rapeseed oil
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ751-805 Miscellaneous motors and engines Including gas, gasoline, diesel engines
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Mechanical Engineering
Depositing User: Miss Nur Rasyidah Rosli
Date Deposited: 21 Nov 2021 03:22
Last Modified: 21 Nov 2021 03:22

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