Comparison of ethanol/diesel fuel dual direct injection (DI2) strategy with reactivity controlled compression ignition (RCCI) in a diesel research engine

Fırat, Müjdat; Altun, Şehmus; Okcu, Mutlu; Varol, Yasin

doi:10.1016/j.energy.2022.124556

Cited by 19 publications

(8 citation statements)

References 40 publications

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“…It also depends on the injection scheduling and reactivity of the DI fuel. This is the primary advantage of the RCCI strategy, which facilitates modification of charge reactivity by varying the premixed ratio and DI timing as desired to reduce the PPRR at higher engine loads . Optimized injection scheduling allows smooth operation over the entire engine load in RCCI .…”

Section: Clean Combustion Via Engine Modificationsmentioning

confidence: 99%

Advancements in In-Cylinder and After-Treatment Strategies for Mitigating Pollutants from Diesel Engines: A Critical Review

Da Costa,

Bukkarapu,

Fernandes

et al. 2024

Energy Fuels

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Although diesel after-treatment techniques demonstrate a substantial decrease in tailpipe emissions, the primary goal continues to be attaining nearly zero emissions to comply with current regulatory requirements and foreseeable imminent rigorous regulations. To achieve this objective, engine combustion systems and fuel formulations require fine-tuning. Taking insights from the recent literature, this review examines various processes, including homogeneous in situ methods, the incorporation of fuel-borne catalysts, and the use of biofuels. Despite progress in in-cylinder pollution mitigation techniques like low-temperature combustion, which exhibits substantial reductions in oxides of nitrogen (NO x ) and soot emissions, it is crucial to consistently advance technology to conform to evolving emission regulations and environmental concerns. A discussion is presented regarding the advantages and disadvantages of the homogeneous charge compression ignition (HCCI) mode and their potential for the future, focusing on biodiesel-fueled HCCI engines. The review assesses the effectiveness of thermal management strategies and engine design modifications that extend the operational range of HCCI engines powered by biodiesel in light of the inherent limitation of a restricted engine operating range. The review critically examines the merits and demerits of biofuels and HCCI systems and provides an essential analysis of current after-treatment approaches. With an imperative focus, the primary aim of this review is to ascertain modern catalysts designed explicitly for use in contemporary combustion systems. An exhaustive examination of the progress made in diesel oxidation catalysts, selective catalytic reduction techniques, lean NO x traps, diesel particulate filters, and catalyst regeneration is presented. The concluding remarks analyze the catalytic characteristics necessary for smooth incorporation with modern technological developments in various combustion systems.

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Section: Clean Combustion Via Engine Modificationsmentioning

confidence: 99%

Advancements in In-Cylinder and After-Treatment Strategies for Mitigating Pollutants from Diesel Engines: A Critical Review

Da Costa,

Bukkarapu,

Fernandes

et al. 2024

Energy Fuels

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“…18,19 Managing in-cylinder charge reactivity by controlling fuel ow gives more dominance over combustion phase control in RCCI operations under variable loads. 20 The LRF also serves as diluents for the injected liquid fuel and the oxygen content inside the cylinder. The gaseous LRF also increases diffusivity and phase homogeneity resulting in much cleaner combustion and less emissions (NO x , PM, UHC).…”

Section: Introductionmentioning

confidence: 99%

“…The RCCI strategy has been experimented with methanol–diesel dual-fuel operation and found an enhanced possibility of using methanol to diesel share up to 56% with significant NO and soot reduction (95% and 78%, respectively). 24 Working on higher UHC and CO emissions in the RCCI strategy, Fırat et al 20 have found that direct injection of ethanol as an LRF is beneficial over port injection with a comparable reduction in UHC and CO at the rates of 16% and 35% respectively. Other researchers 20,25 also experienced similar ethanol prospects to be used as LRF in RCCI mode.…”

Section: Introductionmentioning

confidence: 99%

“…24 Working on higher UHC and CO emissions in the RCCI strategy, Fırat et al 20 have found that direct injection of ethanol as an LRF is beneficial over port injection with a comparable reduction in UHC and CO at the rates of 16% and 35% respectively. Other researchers 20,25 also experienced similar ethanol prospects to be used as LRF in RCCI mode. A much more comprehensive review of different reported studies on RCCI combustion is represented in Table 1.…”

Section: Introductionmentioning

confidence: 99%

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Effect of acetylene as a low reactivity fuel on performance, combustion, exergy and emissions of an acetylene/diesel RCCI engine with variable premix ratios

Deb

Paul

2023

Sustainable Energy Fuels

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“…Many of these efforts have been focused on improving diesel fuel in the form of blended fuel to obtain durable and efficient superior blends to replace conventional diesel fuel. The primary diesel fuel blends developed thus far include ethanol [25][26][27][28][29] , biodiesel [30][31][32][33] , hydrogen 11,34,35 ; water-diesel 2,36,37 , vegetable oil [38][39][40] and various other oxygenated fuels [41][42][43][44] . It is widely thought that the reformulation of diesel fuels has played a significant role in attaining considerable reductions in exhaust emissions 39,[45][46][47] .…”

mentioning

confidence: 99%

Influence of hydrogenated diesel/H2O2 blend fuel on diesel engine performance and exhaust emission characterization

Moujdin

Khan

Abulkhair

et al. 2023

Sci Rep

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The oxygenated hydro diesel (OHD) is prepared from hydrogen peroxide (H2O2), acetone, and seaweed polysaccharide. A long-term study was carried out on the OHD fuel blend stability for about a year at various temperatures. The long-term stability shows very stable properties, no easy emulsion breaking, and a long storage period. The neat diesel and blend fuel performance test was conducted at various engine speeds, 1700–3100 RPM the diesel blend with 5 wt.% and 10 wt. % of H2O2 revealed the best fraction for reducing smoke and emissions. The blend contains 15 wt.% H2O2, revealing a significant reduction in exhaust temperature without considering the engine's performance. Moreover, the performance of the OHD also revealed an economizing rate, decreasing environmental pollution and prolonging the engine’s service life. The diesel engine performance and environmental evaluation leading to exhaust emissions characterization ($${\mathrm{CO}}_{\mathrm{X}}$$ CO X , $${\mathrm{SO}}_{\mathrm{X}}, {\mathrm{NO}}_{\mathrm{X}}$$ SO X , NO X , and others). Based on the results, the various concentrations of H2O2 are an effective method for reducing the emission of diesel engines. Decreased CO, SO2, unburned hydrocarbons, and NO2 were also observed as percentages of H2O2. Due to increased oxygen content, water content and cetane number, the number of unburned hydrocarbons from diesel fuel decreased with the addition of H2O2. Therefore, the OHD blend can significantly curtail the exhaust emission of conventional diesel fuel, which will help reduce the harmful greenhouse gas emissions from diesel fuel sources.

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Comparison of ethanol/diesel fuel dual direct injection (DI2) strategy with reactivity controlled compression ignition (RCCI) in a diesel research engine

Cited by 19 publications

References 40 publications

Advancements in In-Cylinder and After-Treatment Strategies for Mitigating Pollutants from Diesel Engines: A Critical Review

Advancements in In-Cylinder and After-Treatment Strategies for Mitigating Pollutants from Diesel Engines: A Critical Review

Effect of acetylene as a low reactivity fuel on performance, combustion, exergy and emissions of an acetylene/diesel RCCI engine with variable premix ratios

Influence of hydrogenated diesel/H2O2 blend fuel on diesel engine performance and exhaust emission characterization

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