BIODIESEL INFLUENCE ON DIESEL ENGINE EMISSION
Abstract
This paper discusses the influence of the neat biodiesel made from rapeseed oil on the bus diesel engine with injection M system. Running the diesel engine the relationships among fuel properties, injection and combustion characteristics and harmful emission, are investigated. The engine characteristics by experiments and numerical simulation are compared.
The influences of biodiesel on the injection pressure, injection timing, ignition delay, in cylinder gas pressure and temperature, heat release rate, exhaust gas temperatures, harmful emissions, specific fuel consumption, and on engine power are analyzed.
The results obtained with biodiesel are compared to those obtained with mineral diesel. Special attention is given to explanations of higher NOx emission in spite of lower in cylinder gas temperature.
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