A Comparative Study on Gasoline/Diesel-Fueled Rcci Combustion at Different Premixed Ratios and High-Egr Diesel Ci Combustion in an Ic Engine Under Low Load Conditions

Yıldız, Melih; Albayrak, Bilge

doi:10.2139/ssrn.4044321

Cited by 2 publications

(3 citation statements)

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“…In recent years, reactive controlled compression ignition (RCCI) has been considered one of several low-temperature combustion (LTC) strategies utilized in order to improve efficiency while reducing the NO x and soot trade-off. − It is implemented by the combination of two distinct fuels, notably direct injection of high-reactivity fuel and port fuel injection of low-reactivity fuel . Low-reactivity fuel is employed to provide the majority of energy, which causes a considerable amount of fuel to be homogeneously mixed resulting in a combination that is too lean to ignite .…”

Section: Introductionmentioning

confidence: 99%

“… 3 − 5 It is implemented by the combination of two distinct fuels, notably direct injection of high-reactivity fuel and port fuel injection of low-reactivity fuel. 6 Low-reactivity fuel is employed to provide the majority of energy, which causes a considerable amount of fuel to be homogeneously mixed resulting in a combination that is too lean to ignite. 7 The equivalence ratio stratifies as a consequence of the direct injection of high-reactivity fuel.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on Ammonia–Biodiesel Fueled RCCI Combustion Engine Using a Split Injection Strategy

Ramachandran,

Krishnaiah,

Perumal Venkatesan

et al. 2023

ACS Omega

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Advanced combustion concepts in compression ignition are emerging as one of the most promising solutions to reduce nitrogen oxides (NO x ) and particle emissions without sacrificing fuel efficiency. Among many advanced combustion concepts, reactive controlled compression ignition (RCCI) can achieve a wider working range. In this study, to implement RCCI operation, ammonia gas is introduced through the manifold as a low-reactive fuel, and biodiesel is injected directly as a high-reactivity fuel with a 40:60 energy ratio. The effect of biodiesel split ratio in a split injection strategy (pre- and main injections) is examined under varied load conditions, and the results are compared with ammonia/biodiesel single injection. Results indicate that the use of the 45% biodiesel split ratio at full load boosts the peak in-cylinder pressure and heat release rate and shifts the peak occurrence toward the top dead center (TDC). An increase in brake thermal efficiency (BTE) to 36.22% and reduced brake specific energy consumption (BSEC) to 8.75 MJ/kWh are 12.33% higher and 19.31% lower than ammonia/biodiesel single injection. Emissions of HC, CO, and smoke opacity were reduced to 50 ppm, 0.098% vol, and 15.6%, which are 34.21, 39.13, and 33.89% lower, while the emission of NO x was increased to 615 ppm, which is 36.06% higher than the single-injection ammonia/biodiesel RCCI combustion.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation on Ammonia–Biodiesel Fueled RCCI Combustion Engine Using a Split Injection Strategy

Ramachandran,

Krishnaiah,

Perumal Venkatesan

et al. 2023

ACS Omega

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“…As indicated, BSEC for low loads, as well as full loads, has been increased compared to 80% load. 73 The calorific value of NH 3 is lower in energy/mass compared to traditional hydrocarbon. In contrast, NH 3 has a significantly low stoichiometric air fuel proportion than traditional hydrocarbon fuel.…”

Section: Resultsmentioning

confidence: 99%

Optimization of ideal engine parameters to adopt ammonia and algae biodiesel for reactivity controlled compression ignition engine using response surface methodology

Elumalai,

Ravi

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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Renewable and green fuels like carbon-free ammonia and carbon neutral algal-biodiesel appear to be more promising alternatives. Reactivity controlled compression ignition offers a viable alternative to classical combustion. In current delving, compression ratio, injection timing and premixing ratio are established by investigating the combustion, performance, and emission parameters of reactivity-controlled compression ignition operation fueled with ammonia and algae biodiesel as low reactive and high reactive fuel. Primarily, different compression ratio (16, 17, and 18) for different ammonia energy premixing fractions (20%, 30%, 40%, and 50%) at 80% load with standard injection time (24° before top dead center) was evaluated to identify the ideal compression ratio. Next stage, different Injection timing (24°, 26°, and 28° before top dead center) was examined with that ideal compression ratio at 80% load utilizing combustion attributes. Finally, with the ideal compression ratio and injection timing (18° and 26°), the performance and emission for various ammonia energy premixing fractions (20%, 30%, 40%, and 50%) on the entire load ranges (20%, 40%, 60%, 80%, and 100%) were investigated and the optimal fuel fraction was arrived by multi objective optimization technique in response surface methodology by considering response weights. The multi objective optimization result enhances the 43% ammonia premixing combustion. The experimental validation of 43% ammonia premixing combustion achieved the best brake thermal efficiency of 34.02% whereas fuel consumption is 12.72 MJ/kWh. The maximum emission rate of hydrocarbon, carbon monoxide, carbon dioxide, oxides of nitrogen and smoke opacity is 47 ppm, 0.084% volume, 2.04% volume 593 ppm and 15.9%. In comparison to the Conventional biodiesel combustion, an increase in efficiency of 3.34% and a decrease in energy consumption of 3.72% are achieved for the 43% ammonia energy premixing combustion. Similarly, emissions were reduced by 45.35%, 44%, 46.25%, 23.44%, and 28.38% respectively than conventional biodiesel combustion.

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A Comparative Study on Gasoline/Diesel-Fueled Rcci Combustion at Different Premixed Ratios and High-Egr Diesel Ci Combustion in an Ic Engine Under Low Load Conditions

Cited by 2 publications

References 0 publications

Investigation on Ammonia–Biodiesel Fueled RCCI Combustion Engine Using a Split Injection Strategy

Investigation on Ammonia–Biodiesel Fueled RCCI Combustion Engine Using a Split Injection Strategy

Optimization of ideal engine parameters to adopt ammonia and algae biodiesel for reactivity controlled compression ignition engine using response surface methodology

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