Influence of Diesel Fuel and Soybean Oil Ethyl Ester Blends on the Performance and Emission Characteristics of a Diesel Engine
Sugözü, Banu
In this study, blends of soybean oil ethyl ester and diesel fuel are tested as alternative fuel in a single cylinder, air cooled pre-combustion chamber diesel engine at different speeds and their effects on engine performance and emissions are analyzed. It is observed that the average moment obtained by 5% soybean oil ethyl ester and diesel fuel blend (SOE5) is 0.53% lower, the level of power obtained is 1.8% lower; however, specific fuel consumption is approximately 4.31% higher than those of diesel fuel. In the experiments conducted with 20% soybean oil ethyl ester and diesel fuel blend (SOE20), it is observed that the average moment is 1.74% lower, the level of power obtained is 5.91% lower; however, specific fuel consumption is approximately 10.94% higher than those of diesel fuel. Mor...
Modeling and Predicting of Tribological Behaviour of the Automotive Brake Pad Using Response Surface Methodology
Sugözü, Banu
In the present study, wear and frictional behaviours of automotive brake pad sliding against GG 20 cast iron counter face have been investigated experimentally using a pin on disc type friction tester. Wear tests were carried out under dry conditions. A central composite design was used to describe response and to estimate the process parameters in the model. Empirical models have been developed to predict wear loss and friction coefficient as a function of contact pressure and sliding velocity using multiple regression. The statistical analysis show that the contact pressure is identified as the most dominant factor affecting wear loss, sliding velocity is identified is the most dominant factor affecting friction coefficients.