Comparison of direct and port injection of methanol in a RCCI engine using diesel and biodiesel as high reactivity fuels

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

doi:10.1016/j.psep.2023.04.033

Cited by 20 publications

(2 citation statements)

References 59 publications

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“…In the experiments that were carried out for this research, the combined standard uncertainty y is assessed using Eq. ( 5 ) (Bitire and Jen 2023 , Altun et al 2023 ): …”

Section: Methodsmentioning

confidence: 99%

Optimizing soybean biofuel blends for sustainable urban medium-duty commercial vehicles in India: an AI-driven approach

Rajak,

Chaurasiya,

Verma

et al. 2024

Environ Sci Pollut Res

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This article presents the outcomes of a research study focused on optimizing the performance of soybean biofuel blends derived from soybean seeds specifically for urban medium-duty commercial vehicles. The study took into consideration elements such as production capacity, economics and assumed engine characteristics. For the purpose of predicting performance, combustion and emission characteristics, an artificial intelligence approach that has been trained using experimental data is used. At full load, the brake thermal efficiency (BTE) dropped as engine speed increased for biofuel and diesel fuel mixes, but brake-specific fuel consumption (BSFC) increased. The BSFC increased by 11.9% when diesel compared to using biofuel with diesel blends. The mixes cut both maximum cylinder pressure and $${{\text{NO}}}_{{\text{x}}}$$ NO x emissions. The biofuel-diesel fuel proved more successful, with maximum reduction of 9.8% and 22.2 at rpm, respectively. The biofuel and diesel blend significantly improved carbon dioxide ($${{\text{CO}}}_{2}$$ CO 2 ) and smoke emissions. The biofuel blends offer significant advantages by decreeing exhaust pollutants and enhancing engine performance. Graphical Abstract

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“…In the experiments that were carried out for this research, the combined standard uncertainty y is assessed using Eq. ( 5 ) (Bitire and Jen 2023 , Altun et al 2023 ): …”

Section: Methodsmentioning

confidence: 99%

Optimizing soybean biofuel blends for sustainable urban medium-duty commercial vehicles in India: an AI-driven approach

Rajak,

Chaurasiya,

Verma

et al. 2024

Environ Sci Pollut Res

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show abstract

“…For both methanol premixed and diffusion combustion engines, the CO 2 emissions were reduced in the range 7-15%. Compared to diffusion, the premixed combustion method resulted in higher BTE due to shorter combustion and hence lower heat transfer losses [99]. For MEF ranging 5-55%, the in-cylinder maximum pressure exhibits contradictory tradeoffs depending on the prevailing combustion conditions.…”

Section: Comparison Of Premixed and Diffusion Combustion Enginesmentioning

confidence: 99%

Methanol Combustion Characteristics in Compression Ignition Engines: A Critical Review

Karvounis,

Theotokatos,

Vlaskos

et al. 2023

Energies

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Methanol has been identified as a transition fuel for the decarbonisation of combustion-based industries, including automotive and maritime. This study aims to conduct a critical review of methanol combustion in compression ignition engines and analyse the reviewed studies’ results to quantify methanol use’s impact on engine performance and emissions characteristics. The diesel and diesel–methanol operation of these engines are comparatively assessed, demonstrating the trade-offs between the methanol fraction, the key engine performance parameters, including brake thermal efficiency, peak in-cylinder pressure, heat release rate, and temperature, as well as the carbon dioxide, carbon monoxide, nitrogen oxides, and particulate matter emissions. The types of the reviewed engines considering the main two combustion methods, namely premixed and diffusion combustion, are discussed. Research gaps are identified, and recommendations for future research directions to address existing challenges for the wider use of methanol as a marine fuel are provided. This comprehensive review provides insights supporting methanol engine operation, and it is expected to lead to further studies towards more efficient use of methanol-fueled marine engines.

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Exploring the multifarious blend ratios of waste fried edible oil biodiesel/diesel/low carbon methanol in an automotive engine: An approach towards fuel characterization, experimental, and multicriteria decision making method

Ananda Murugan,

Nataraj

2024

Env Prog and Sustain Energy

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A low‐cost, high‐performance alternative fuel to traditional fossil fuels is required due to rising energy demand, fossil fuel depletion, and rising prices. In this case, one of the green fuels could be synthesized using transesterification from waste‐fried edible oil (WFEO). The current study deals with neat diesel (D100) and waste‐fried edible oil biodiesel (B100) as the baseline fuels. By volume, a binary blend of 50% diesel and 50% WFEO biodiesel was prepared. The biodiesel/methanol/diesel mixture was considered a ternary blend under two different ternary ratios, such as B40M10D50 and B30M20D50, respectively. The fuel characterization and the rheological study were performed for all the fuel blends as per the ASTM standards. According to engine experimental results, the B30M20D50 blend has 25.42% higher brake thermal efficiency (BTE) than B100 but 3.4% lower than D100 at full load due to the higher methanol percentage. When compared with D100, adding 20% methanol to the ternary blend reduced brake‐specific fuel consumption (BSFC) by 33.34%. Both ternary blends increased NOx emissions by 27.38% and 22.97% compared to D100 but decreased them by 14.23% and 18.68% compared to B100. Both ternary blends produced 0.4 and 0.36 kg/kWh at lower loads, while the D100 and B100 produced 0.46 and 0.42 kg/kWh. Finally, the entropy‐weighted technique for order preference by similarity to the ideal solution (TOPSIS) multi‐criteria decision‐making method was used to determine the best blend for engine performance and emissions. The entropy‐weighted TOPSIS technique likewise found that a B30M20D50 ternary blend with 75% loading had the lowest emissions and best performance.

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Comparison of direct and port injection of methanol in a RCCI engine using diesel and biodiesel as high reactivity fuels

Cited by 20 publications

References 59 publications

Optimizing soybean biofuel blends for sustainable urban medium-duty commercial vehicles in India: an AI-driven approach

Optimizing soybean biofuel blends for sustainable urban medium-duty commercial vehicles in India: an AI-driven approach

Methanol Combustion Characteristics in Compression Ignition Engines: A Critical Review

Exploring the multifarious blend ratios of waste fried edible oil biodiesel/diesel/low carbon methanol in an automotive engine: An approach towards fuel characterization, experimental, and multicriteria decision making method

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