Optimal performance and emissions of diesel/hydrogen-rich gas engine varying intake air temperature and EGR ratio

Wu, Hung‐Wei; Hsu, Tzu Ting; He, Jian Yi; Fan, Chen

doi:10.1016/j.applthermaleng.2017.06.026

Cited by 41 publications

(13 citation statements)

References 20 publications

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“…53 Taguchi’s approach has been widely used in engine experiments with up to 10 input parameters. 54–56 In the current study, there are five input parameters, each with five levels, thus requiring 25 trials as per Taguchi’s method. The operating conditions for these trials are represented using an L 25 orthogonal array (see Table 8 in Appendix 2).…”

Section: Methodsmentioning

confidence: 99%

Optimization of performance and emissions in a biogas–diesel dual fuel engine with cerium oxide nanoparticle addition

Feroskhan

Ismail

Gosavi

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part D:

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This study was carried out on a diesel engine operated in dual fuel mode by introducing biogas in the intake air stream. Cerium oxide (CeO2) nanoparticles in varying concentrations were used as diesel additive. Performance and emission tests were carried out to evaluate the effects of five input parameters, namely, CeO2 concentration, torque, biogas flow rate, methane fraction of biogas, and intake temperature. Taguchi’s method was adopted to reduce the number of experimental trials. Signal-to-noise ratio variations were studied and analysis of variance was carried out to obtain the optimum combination of operating parameters and their contributions towards the performance and emission indices. Results showed that low biogas flow rates ensure better thermal and volumetric efficiency and low HC and CO emissions. High biogas flow rates provide significant reduction in diesel consumption and NOx emissions. Increasing the methane content of biogas lowers diesel consumption and emissions of HC and CO. Adding 25 mg/L of CeO2 to diesel improves brake thermal efficiency and lowers all emissions. While manifold heating improves brake thermal efficiency, low intake temperature is preferred from the standpoint of volumetric efficiency and emissions.

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Section: Methodsmentioning

confidence: 99%

Optimization of performance and emissions in a biogas–diesel dual fuel engine with cerium oxide nanoparticle addition

Feroskhan

Ismail

Gosavi

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…In scientific research, they seek to reveal the mechanism of the above processes in order to further generalize the results obtained. However, given the complexity of the phenomena, it is necessary, before investigating the flame as a whole, to investigate individual processes occurring in it or to investigate initially such flames in which, due to their nature, some very complex processes are absent [13,14]. A typical example of this is the study of homogeneous flames of those fuels in which there are no hydrocarbon components.…”

Section: Resultsmentioning

confidence: 99%

Investigation of the flame of natural gas in the combustion chamber of a tractor diesel engine

Maksimov

Alatyrev

Smirnov

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Heat exchange by radiation in the working space of high-temperature combustion chambers is the predominant type of heat exchange, depending both on the temperature of the flame and on its emissivity. As is known, a luminous flame differs from a non-luminous one in that it emits thermal energy not selectively within the CO 2 and H 2 O bands, but over the entire spectrum, including the visible region. Moreover, it is in the visible region of the glowing flame of natural gas that a significant amount of thermal energy is emitted. This is explained by the fact that the dispersed phase (soot), which arose during the decomposition of methane, contains particles of such sizes (0.05-0.2 microns), which are characterized by maximum radiation in the visible and near-infrared regions of the spectrum. Thus, the emissivity of a luminous flame is significantly higher than the emissivity of a non-luminous flame. This ability of the luminous flame is the reason for its use in diesel internal combustion engines (DICE).

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“…Hydrogen usually increases NO x emissions, especially at high loads, due to the high temperatures reached in the combustion chamber [20][21][22]. This constitutes an important problem, since the transport sector, especially internal combustion engines, is considered the major source of NO x formation worldwide [23,24].…”

Section: Introductionmentioning

confidence: 99%

NOx Reduction in Diesel-Hydrogen Engines Using Different Strategies of Ammonia Injection

Galdo

Rodríguez²

2019

Energies

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In order to reduce NOx emissions in internal combustion engines, the present work analyzes a measurement which consists of injecting ammonia directly into the combustion chamber. A commercial compression ignition engine fueled with a hydrogen-diesel blend was studied numerically. It was verified that the flow rate shape in which the ammonia was injected, particularly rectangular, triangular, or parabolic, as well as the injection duration had an important influence on NOx reduction. A 11.4% improvement in NOx reduction, corresponding to an overall reduction of 78.2% in NOx, was found for parabolic injection shape and 1º injection duration. The effect on carbon dioxide, carbon monoxide, and hydrocarbon emissions, as well as brake-specific consumption, was negligible.

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Optimal performance and emissions of diesel/hydrogen-rich gas engine varying intake air temperature and EGR ratio

Cited by 41 publications

References 20 publications

Optimization of performance and emissions in a biogas–diesel dual fuel engine with cerium oxide nanoparticle addition

Optimization of performance and emissions in a biogas–diesel dual fuel engine with cerium oxide nanoparticle addition

Investigation of the flame of natural gas in the combustion chamber of a tractor diesel engine

NOx Reduction in Diesel-Hydrogen Engines Using Different Strategies of Ammonia Injection

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