Simulation of Combustion Process of Diesel and Ethanol Fuel in Reactivity Controlled Compression Ignition Engine

Abstract

Reactivity controlled compression ignition (RCCI) engine give advantages over conventional diesel engine with the promising engine power and good control on NOx and soot emission. The trend of the RCCI concept is still new and Is very important to control the ignition in order to control the combustion progress and emission. The objective of this study is to provide data on the combustion characteristics and emission of diesel as high reactive, and ethanol as the low reactive fuel in the RCCI engine. The engine speed and injection timing were varied. Simulation work was conducted by using the Converge CFD software based on the Yanmar TF90 diesel engine parameter. Results show that operating the engine at low speed resulting in better engine performance and low carbon emissions due to the sufficient oxygen contents. For the high-speed engine, advancing the injection timing improves the fuel and air reactivity and steeper the equivalence ratio gradient, which result in a complete combustion process.

Numerical Investigation of Heat Transfer in Car Radiation System Using Improved Coolant

“…While the relation between the flow rate and the Nusselt number at temperature 45 °C is seen in Figure 2 at 0.7 percent nano particle concertation. In these two numbers, strong consensus can be seen [18,19]. The computation of the absolute average error shows 7 percent to be the water-based nanofluid prediction error.…”

Study of the Combustion Process of a Homogeneous Charge Compression Ignition (HCCI) Engine and a Partially Premixed Combustion (PPC) Mode of a Compression Ignition Engine Using Natural Gas as an Alternative Fuel

“…Meanwhile, Lee et al, [33] concluded that when the CO2 fraction changed from 0% to 50%, carbon monoxide (CO) and unburned hydrocarbons (UHC) emissions increased, while NOX emissions decreased. We can find more information about the subject of this study in previous papers [63][64][65][66].…”

Influence of Environment-Friendly Fuel Additives and Fuel Injection Pressure on Soot Nanoparticles Characteristics and Engine Performance, and NOX Emissions in CI Diesel Engine

“…The objectives of the world are substituting fossil fuels by alternative fuels to reducing the pollutant emissions to meet the standard emissions regulations. It well known that the compression ignition (CI) engine produces high level of soot and NOX emissions that effect on both environment and health [1]. To confront technology, climate, and renewability challenges, different blends of fuels derived from a large variety of feedstock will be available in the future such as biodiesel-diesel blends and alcohol-diesel blends.…”

“…Therefore, many studies have been documented on results of NOX and PM emitted from the oxygenated fuels combustion in diesel engines [7,8]. Zulkurnai et al, [9] stated that the NOX and soot decreased from combustion of ethanol-diesel blend which contribute in better engine performance and better environmental future. Most of studies reported that the soot emissions decreased as the percentage of biodiesel content increased in the fuel-blend [10].…”