Abstract
In this study, a comparison was made to evaluate fuel properties and engine performance when using local gasoline fuel MU0 with two types of commercial fuel optimizer. MU1 (1/200 addition ratio of commercial additive U1 with local gasoline MU0), and MU2 (1/100 addition ratio of commercial additive U2 with local gasoline MU0) was investigated in addition to commercial enhanced gasoline MU3. Local gasoline MU0 has been adopted as a threshold for comparison. Performance tests conducted in a single-cylinder four stroke sparkignition engine using fuel samples (MU0, MU1, MU2, MU3) at engine speed range from 1200 to 2800 rpm with increment of 400 rpm and open throttle valve100% (WOT). The results showed an increased octane number and viscosity of fuel MU1 by about (3.49%, 16.92%) respectively, and reduction in the heating value by about 19.4%, with addition U1. Increase heating value and viscosity of fuel MU2 by about (1.68%, 22.31%), with addition U2. As well as, increase brake power by about (4%, 16%) at 2800 rpm with MU2 and MU3 respectively compared to local gasoline MU0. In addition, brake specific fuel consumption reduced with fuel MU3 and increased with (MU1, MU2). The brake thermal efficiency was enhanced with fuel MU1 and MU3 and the better improvement obtained for MU1 by about 22.47% at 2400 rpm.
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