Assessing idling effects on a compression ignition engine fueled with Jatropha and Palm biodiesel blends

Investigating the effect of fuel cetane number, oxygen content, fuel density, and engine operating variables on NOx emissions of a heavy duty diesel engine

“…This trend could be explained by the fact that higher density fuel injection into the engine cylinder increases the mass of fuel per unit volume, which may lead to more heat release and higher in‐cylinder temperatures, and hence higher thermal NOx. These results are consistent with the findings of others , showing the direct correlation of NOx emissions and density.…”

“…This trend could be explained by the fact that higher density fuel injection into the engine cylinder increases the mass of fuel per unit volume, which may lead to more heat release and higher incylinder temperatures, and hence higher thermal NOx. These results are consistent with the findings of others [9,34,35], showing the direct correlation of NOx emissions and density. Effect of CN on NOx Effect of CN on NOx is shown in Figure 6; it may be observed that CN and NOx are directly correlated for these oxygenated fuels in a narrow range of CN varying from 51 to 59.…”

Implementation of palm biodiesel based on economic aspects, performance, emission, and wear characteristics

“…Lower cetane number with keeping aromatic content, particulate emissions decrease, and NO x emission increases at high load. As aromatic content increases, both NO x and particulate emissions also increase at high load, although overall combustion characteristics are not sensitive to aromatic content and high-pressure injection produces high NO x concentration but less particulate emissions [130].…”

Modeling analysis of urea direct injection on the NO x emission reduction of biodiesel fueled diesel engines

“…To optimize the combustion process of conventional fossil fuel, the use of oxygenated fuels such as biodiesel has been on the spotlights as a promising additive which can significantly enhance the combustion efficiency by replenishing oxygen in the fuel rich zones due to the release of oxygen atoms from its chemical structure, thereby reducing the PM, CO and HC emissions [2][3][4]. However, the drawback followed would be the slightly elevated NO x emissions as reported by many researchers [5][6][7][8][9].…”