Experimental study of the effect of HHO gas injection on pollutants produced by a diesel engine at idle speed

Sabeghi, Mohammad; Moghiman, Mohammad; Gandomzadeh, Danial

doi:10.1016/j.ijhydene.2022.12.010

Cited by 5 publications

(5 citation statements)

References 34 publications

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“…O hidrogênio é indicado como combustível adicional em motores de ignição por compressão movidos a diesel, devido às suas características e propriedades, possui uma ampla faixa de inflamabilidade, de 4 -75%, em comparação com o óleo diesel, e uma maior velocidade de ignição, o que permite que os motores funcionem com misturas mais pobres, ou seja, com menos injeção de diesel. A mistura de hidrogênio-ar pode ser facilmente inflamada em motores de ignição por compressão, pois a energia de ignição mínima é menor do que a do diesel (Sabeghi et al, 2023). Krishnasamy et al (2021) elaboraram uma revisão geral do efeito da adição de hidrogênio em motores a diesel e encontraram os seguintes resultados.…”

Section: Efeito Da Adição Controlada De Hidrogênio a Motores Dieselunclassified

Importância do hidrogênio na indústria de mineração como fonte de energia renovável

Figueiredo,

Silva,

Ortiz

2023

J. Env. Anal. Progr.

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Na mineração, o sistema de operação depende de equipamentos que consomem grandes quantidades de energia. Nas operações mineiras, os equipamentos a diesel são amplamente empregados devido à sua flexibilidade, capacidade de carga e adaptabilidade a várias condições de terreno. Entretanto, apresentam alto consumo de óleo diesel e alta taxa de emissão de gases de efeito estufa. Este artigo oferece uma visão do efeito do hidrogênio sobre os motores diesel na busca de alternativas de energia renovável que estejam em sintonia com a redução do impacto ambiental decorrente do uso de combustíveis derivados do petróleo. É seguido por uma discussão do consumo de energia na mineração. Apresenta as tecnologias de produção do hidrogênio, as vantagens em utilizá-los em quantidades controladas e os desafios de produção, armazenamento e custos de fornecimento. Destaca-se o hidrogênio verde, livre de carbono, uma alternativa emergente na descarbonização das minas.

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Section: Efeito Da Adição Controlada De Hidrogênio a Motores Dieselunclassified

Importância do hidrogênio na indústria de mineração como fonte de energia renovável

Figueiredo,

Silva,

Ortiz

2023

J. Env. Anal. Progr.

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“…Sughayyer [9] shows that the use of hydrogen leads to significant reduction of diesel fuel and reduction of the emission levels in terms of engine efficiency maintaining, developing a modelling procedure in order to make a correlation with the experimental results. Sabeghi [10] shows the reduction of the NOx emission level with 11% at the use of HHO as fuel comparative to diesel fuel operation. Raju [11] shows that hydrogen injection leads to the reduction of the smoke emission level but not for the NOx emission level.…”

Section: Introductionmentioning

confidence: 99%

Theoretical aspects of the use of hydrogen in the diesel engine

Cernat,

Negurescu,

Pana

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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The promotion of fuels with low carbon content is the solution to reduce pollutant emissions in all areas of transport in a relatively short time. In this context, hydrogen is privileged, being a viable alternative fuel for internal combustion engines in all fields of transport, having the advantage of preserving the basic structure of the engine. The main obstacles to the large-scale expansion of the use of hydrogen as a fuel in internal combustion engines in transport are determined by the cost of production, storage on board the vehicle and the distribution network, large investments being required. The concept of using hydrogen as an alternative fuel to the diesel engine is relatively recent, the concerns of specialists being more intense in the last two decades. The improvement of the energy and pollution performance of the diesel engine when operating in a dual system, with diesel and hydrogen, is determined by the improvement of the combustion process due to the good combustion properties of hydrogen. The paper presents theoretical modeling results regarding the influence of hydrogen on the combustion pressure, the pressure rise rate, the heat release rate, the indicated efficiency and the nitrogen oxides emission level.

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“…The brake thermal efficiency increased with lower CO, hydrocarbon (HC), and smoke emissions, meanwhile, the NO emissions increased compared with the single biodiesel fuel. Sabeghi et al, (2023) experimentally studied HHO gas injection on diesel engine emissions with idle speed. However, the NOx, HC, CO, and CO2 emissions were reduced significantly.…”

Section: Introductionmentioning

confidence: 99%

Performance and carbon emissions of a diesel/oxy-hydrogen dual-fuel engine with oxy-hydrogen injection variation under low and medium load conditions

Felayati,

Prasutiyon,

Janah

et al. 2024

Int. J. Renew. Energy Dev.

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Reducing carbon emissions such as carbon dioxide (CO2) and carbon monoxide (CO) from diesel engines struggled with engine performance challenges and fossil fuel limitations. Besides, huge transportation such as ships hardly replaced diesel engines due to the higher thermal efficiency and low operation cost. Oxy-hydrogen gas, as a carbon-free gas, could potentially improve diesel engine performance and carbon emissions. Most of the studies tried to identify the effect of oxy-hydrogen induction into diesel engine combustion on performance and emissions. However, this study evaluated oxy-hydrogen injector sizes to the diesel engine performance and carbon emissions at several loads and several engine speed conditions. Overall, the result showed that the oxy-hydrogen gas injection into the diesel engine’s intake port improved the performance and carbon emissions compared to the single diesel fuel as a baseline. High engine performance with low carbon emissions could be achieved at low and medium engine load conditions with high engine speeds. Moreover, smaller oxy-hydrogen injector sizes were suitable for the medium engine load and vice versa, to improve the performance and carbon emissions. At low load, the engine performance improvement of engine torque, specific fuel consumption, and thermal efficiency were 1800 to 2200 rpm. Moreover, the CO2 and CO emissions reductions were also suitable with 2200 rpm with a bigger oxy-hydrogen gas injector (6 mm). Furthermore, at medium load, the engine performance improved at 1400 rpm but the CO2 and CO emissions were lower at 2200 rpm with a small oxy-hydrogen gas injector (4 mm). The engine operation at 2200 rpm with a 4 mm injector also improved the engine performance regarding carbon emissions reduction. However, injecting oxy-hydrogen gas into diesel engines had the potential to enhance the engine performance and reduce carbon emissions, moving closer to achieving zero emissions

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Experimental study of the effect of HHO gas injection on pollutants produced by a diesel engine at idle speed

Cited by 5 publications

References 34 publications

Importância do hidrogênio na indústria de mineração como fonte de energia renovável

Importância do hidrogênio na indústria de mineração como fonte de energia renovável

Theoretical aspects of the use of hydrogen in the diesel engine

Performance and carbon emissions of a diesel/oxy-hydrogen dual-fuel engine with oxy-hydrogen injection variation under low and medium load conditions

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