Investigating the effects of injection and induction modes of hydrogen addition in a CRDI pilot diesel-fuel engine with exhaust gas recirculation

Vimalananth, V.T.; Panithasan, Mebin Samuel; Venkadesan, Gnanamoorthi

doi:10.1016/j.ijhydene.2022.05.043

Cited by 18 publications

(3 citation statements)

References 45 publications

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“…At an EGR rate of 30%, NO x emissions dropped to 4.86 g/kWh, which means a 10% decline compared to the base case with diesel fuel. However, in certain scenarios, the use of EGR proved insufficient in minimizing emissions below the baseline, as demonstrated by Vimalananth et al [66]. In that study, the initial emission level of 9.5 g/kWh without H 2 remained unaltered despite the application of the maximum EGR rate (10%).…”

Section: Exhaust Gas Recirculationmentioning

confidence: 72%

“…Additionally, the mixture ignited with less intensity due to insufficient oxygen levels. Vimalananth et al [66] reported a decrease in the heat release rate peak, delayed ignition, and a slight rise in the diffusion combustion peak's area under the curve with EGR addition. They attributed it to an increase in the mixture-specific heat value, which lowered the overall combustion temperature and led to a higher CD.…”

Section: Exhaust Gas Recirculationmentioning

confidence: 99%

“…The use of EGR with H 2 has proven to be an effective technique for reducing NO x emissions. Nevertheless, relevant studies have shown that the dilution effect causes an increase in other pollutant emissions [50,54,66,[79][80][81][82]87,88]. CO emissions increase with the EGR rate due to the O 2 -deficient environment in the combustion chamber, thus lowering the in-cylinder temperature and reaction speed.…”

Section: Exhaust Gas Recirculationmentioning

confidence: 99%

See 2 more Smart Citations

A Review of the Use of Hydrogen in Compression Ignition Engines with Dual-Fuel Technology and Techniques for Reducing NOx Emissions

Rueda-Vázquez,

Serrano,

Pinzi

et al. 2024

Sustainability

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The use of compression ignition engines (CIEs) is associated with increased greenhouse gas emissions. It is therefore necessary to research sustainable solutions and reduce the negative environmental impact of these engines. A widely studied alternative is the use of H2 in dual-fuel mode. This review has been developed to include the most recent studies on the subject to collect and compare their main conclusions on performance and emissions. Moreover, this study includes most relevant emission control strategies that have not been extensively analyzed in other reviews on the subject. The main conclusion drawn from the literature is the negative effect of the addition of H2 on NOx. This is due to the increase in temperature during combustion, which increases NOx formation, as the thermal mechanism predominates. Therefore, to reduce these emissions, three strategies have been studied, namely exhaust gas recirculation (EGR), water injection (WI), and compression ratio (CR) reduction. The effect of these techniques on NOx reduction, together with their effect on other analyzed performance parameters, have been deeply analyzed. The studies reviewed in this work indicate that hydrogen is an alternative fuel for CIEs when used in conjunction with techniques that have proven to be effective in reducing NOx.

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Section: Exhaust Gas Recirculationmentioning

confidence: 72%

Section: Exhaust Gas Recirculationmentioning

confidence: 99%