BEHAVIOR OF DIESEL FUEL INJECTION SYSTEM WHEN RUNNING WITH BIODLESEL | ||||
| ERJ. Engineering Research Journal | ||||
| Article 6, Volume 30, Issue 2, April 2007, Page 161-175 PDF (1013.1 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/erjm.2007.70051 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| Safwat A. Wilson | ||||
| MechanicaZ Power Engineering Department, Faculty of Engineering, MinouJiya University, Shebin EI-Kom, Egypt | ||||
| Abstract | ||||
| The study aims to approach the performance of fuel injection system of diesel engines when using biodiesel as an alternative fuel. Mathematical model is proposed to simulate the fuel path through the injection system taking into consideration the compressibility effect, pressure waves in the pipeline, fuel properties and the leakage through clearance of moving parts. The model is compared with another experimental work for validation. The effect of biodiesel properties and its blends on the injection system behavior are examined. The results indicate that, when using biodiesel as an alternative fuel, the pressure waves propagating through the line diminished rapidly compared with conventional diesel oil. The results indicate also that, when using biodiesel, the leakage decreased because of its higher viscosity. As a result, the rate of pressure rise increases and the beginning of injection becomes earlier. It is important in this case to retard the injection timing to optimize the engine performance. On the other hand, the study shows that, the same atomization degree can be obtained when transformed to biodiesel by raising the injection pressure with certain ratios. These ratios depend on biodiesel blend percentage and compression ratio of the engine. | ||||
| Keywords | ||||
| Fuel injection system; Biodiesel; mathematical model; compression ignition engines | ||||
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