Characterization of the time-averaged overall heat transfer in a direct-injection hydrogen-fueled engine

Rahman, M. M.; Hamada, Khalaf I.; Aziz, A. Rashid A.

doi:10.1016/j.ijhydene.2013.01.136

Cited by 36 publications

(10 citation statements)

References 27 publications

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“…For directly measured parameters, the measurement uncertainties are defined by the accuracies of the experimental instruments. For computed parameters, the measurement uncertainties are determined based on the principle of the root-mean-square method and the measurement accuracies of the measured parameters (Li et al 2015;Rahman et al 2013):…”

Section: Test Set-up and Instrumentsmentioning

confidence: 99%

Effects of Fe2O3 and Al2O3 nanoparticle-diesel fuel blends on the combustion, performance and emission characteristics of a diesel engine

Nouri

Isfahani

Shirneshan

2021

Clean Techn Environ Policy

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This research investigates the effects of the addition of Fe2O3 and Al2O3 nanoparticles (30, 60, and 90 ppm) and Fe2O3-Al2O3 hybrid nanoparticles to pure diesel fuel on the combustion, performance and emission characteristics of a diesel engine. The results indicated that fuel blends improved the combustion (in-cylinder pressure and heat release rate), performance (power, fuel consumption, and thermal and exergy efficiency), and emission characteristics of the engine. The results showed that the peak combustion pressure increased by 4% and the heat release rate was improved by 15% in comparison with pure diesel with the addition of the nanoparticles. Moreover, the rate of pressure rise increased by 18% compared to pure diesel with nanoparticle additives. Based on the results, the effects of Fe2O3 fuel blends on brake power, BTE, and CO emission were more than Al2O3 fuel blends, such that it increased power and thermal efficiency by 7.40 and 14%, respectively, and reduced CO emissions by 21.2%; moreover, the blends with Al2O3 nanoparticle additives in comparison with Fe2O3 nanoparticle blends showed a better performance in reducing BSFC (9%), NOx (23.9%), and SO2 (23.4%) emissions. Overall, the Fe2O3-Al2O3 hybrid fuel blend is the best alternative if the performance and emission characteristics of the engine are both considered.

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Section: Test Set-up and Instrumentsmentioning

confidence: 99%

Effects of Fe2O3 and Al2O3 nanoparticle-diesel fuel blends on the combustion, performance and emission characteristics of a diesel engine

Nouri

Isfahani

Shirneshan

2021

Clean Techn Environ Policy

View full text Add to dashboard Cite

show abstract

“…For directly measured parameters, the measurement uncertainties are defined by the accuracies of the experimental instruments. For computed parameters, the measurement uncertainties are determined based on the principle of root-mean square method [22] and the measurement accuracies of the measured parameters:…”

Section: Uncertainty Analysismentioning

confidence: 99%

Experimental investigation on performance and heat release analysis of a pilot ignited direct injection natural gas engine

Zhang

et al. 2015

Energy

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“…[1][2][3][4][5][6][7][8][9][10][11][12] In addition, numerous studies have been conducted on applying a direct-injection system to hydrogen engines in order to improve power output and eliminate backfiring under high-load operating condition. [13][14][15][16][17][18][19] In recent years, numerical analysis of hydrogen combustion and research and development work aimed at applying hydrogen to large vehicles such as trucks and buses have been actively carried out. [20][21][22][23] Similar technologies are also being developed for fuel cells, which are another application of hydrogen fuel.…”

Section: Introductionmentioning

confidence: 99%

Effect of modified combustion chamber configuration and enhanced squish flow on improving thermal efficiency in jet-plume-controlled direct-injection near-zero emission hydrogen engines

Oikawa

Mogi

Horiguchi

et al. 2022

International Journal of Engine Research

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In direct injection hydrogen engines, the Plume Ignition and Combustion Concept (PCC) developed by the authors has been applied to improve thermal efficiency and reduce NOx emissions under high-load operation. The PCC combustion method burns an optimized hydrogen jet plume that is ignited immediately upon completion of injection in the latter half of the compression stroke. In addition to optimizing the hydrogen jet configuration, this basic combustion concept was applied to burn a lean mixture and supercharging was used to recover the decline in power output due to combustion of a diluted mixture. As a result, a near-zero emission engine has been achieved that simultaneously provides high thermal efficiency, high power output and low NOx emissions at a single-digit ppm level. Various techniques have been applied to improve thermal efficiency further and achieve much lower NOx emissions close to a zero-emission target. These included the adoption of a re-entrant combustion chamber to reduce unburned hydrogen emissions, enhanced squish flow to promote better mixing of air and the hydrogen jet injected into the combustion chamber, and a narrower nozzle hole diameter to promote entrainment of air into the hydrogen jet. In this study, the effect of each of these measures was made clear experimentally and by analysis. This paper presents the results obtained.

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Characterization of the time-averaged overall heat transfer in a direct-injection hydrogen-fueled engine

Cited by 36 publications

References 27 publications

Effects of Fe2O3 and Al2O3 nanoparticle-diesel fuel blends on the combustion, performance and emission characteristics of a diesel engine

Effects of Fe2O3 and Al2O3 nanoparticle-diesel fuel blends on the combustion, performance and emission characteristics of a diesel engine

Experimental investigation on performance and heat release analysis of a pilot ignited direct injection natural gas engine

Effect of modified combustion chamber configuration and enhanced squish flow on improving thermal efficiency in jet-plume-controlled direct-injection near-zero emission hydrogen engines

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