in this paper, a numerical study is performed to provide the combustion and emission characteristics resulting from fuel-reactivity controlled compression ignition (rcci) combustion mode in a heavy-duty, single-cylinder diesel engine with gasoline and diesel fuels. in rcci strategy in-cylinder fuel blending is used to develop fuel reactivity gradients in the combustion chamber that result in a ...

methanol as a biofuel is an environmental friendly substitute to pure diesel and can be obtained from biomasses. use of biofuels such as methanol for combustion process is associated with positive environmental impacts. using pure methanol or blended with diesel fuel in automotive has been proposed by researchers. in this paper, methanol was injected into combustion chamber of a ism 370 hd dies...

Engine research community interest in the Radio-Frequency corona-based ignition systems is currently gaining importance mainly due to their capability ensure robust combustion at challenging operating conditions such as very lean mixture and/or high EGR dilution. The benefits of Corona low-temperature plasma foster early flame development thanks precursors production and a more energetic volume...

The lean-burn capability of the Diesel-ignited gas engine combined with its potential for high efficiency and low CO2 emissions makes this engine concept one of the most promising alternative fuel converters for passenger cars. Instead of using a spark plug, the ignition relies on the compression-ignited Diesel fuel providing ignition centers for the homogeneous air-gas mixture. In this study t...

Abstract This work evaluated the effect of cooled exhaust gas recirculation (EGR) on fuel consumption and pollutant emissions from a diesel engine fueled with B8 (a blend biodiesel no. 8:92% by volume), experimentally numerically. Experiments were carried out power generator varying loads 5 kW to 35 10% cold EGR ratio. Exhaust (e.g., total hydrocarbons (THCs), nitrogen oxides (NOx), carbon mono...

A detailed chemistry-based CFD model was developed to simulate the diesel spray combustion and emission process. A reaction mechanism of n-heptane is coupled with a reduced NOx mechanism to simulate diesel fuel oxidation and NOx formation. The soot emission process is simulated by a phenomenological soot model that uses a competing formation and oxidation rate formulation. The model is applied ...

Rich burn industrial natural gas engines offer best in class post catalyst emissions by using a non-selective reduction aftertreatment technology. However, they operate with reduced power density when compared to lean engines. Dedicated exhaust recirculation (EGR) offers possible pathway for rich use technology without sacrificing density. In order achieve emissions, the precious metals and was...

Two-stroke engines are distinguished by the highest overall efficiency among all main engines. This is not only due to low speed, and large piston stroke, but also high combustion temperature, which result in an increase nitrogen oxides (NO<sub>x</sub>) emission. Technical solutions applied bring into compliance with current NO<sub>x</sub> emission standards set Tier III...