Influence of Injection Time N IC Engine Performance and Emissions Operating with Different Biodiesel Blends
Lixue jinzhan(2021)
Al-Furat Al-Awsat Technical University
Abstract
A numerical study was created and developed by used AVL Boost to evaluate the effect of injection timing (710, 712, 714, 716, and 718 before TDC) on CI engine performance, combustion characteristics and emissions when using diesel and biodiesel blends (B30, B40, B50 and B60) at engine speed 1750 rpm and load. A four-cylinder four-stroke compression ignition engine was used in this work. The results showed that the brake power and the effective torque were decreased when the injection timing rated. A reduction in specific fuel consumption for biodiesel blends fuels at all operating conditions was noted. The peak fire pressure and temperature reductions when rated in injection timing. Biodiesel blends produced lower effective power and effective torque compared to that of diesel fuel at all selected injection timings. In the case of biodiesel fuels, NOx emissions increased, while soot emissions decreased drastically at all operating conditions. For all fuels, NOx emissions decreased, while soot emissions increased when injection times went from advance to rated degree.
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