An onboard hydrogen generator for hydrogen enhanced combustion with internal combustion engine

Chen, S.C.; Kao, Yu-Ting; Yeh, G.T.; Rei, Min-Hon

doi:10.1016/j.ijhydene.2017.03.013

Cited by 37 publications

(9 citation statements)

References 7 publications

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“…These hydrogencarrying compounds allow simple hydrogenation reactions at moderate temperatures. When accumulating hydrogen in the form of ammonia, methanol, ethanol, etc., the production of these liquid hydrogen carriers is conducted at large enterprises, and the cost of such hydrogen accumulation is determined by the final costs of their production and the processes of consumption of the produced hydrogen [8,17,18].…”

Section: Accumulation Of Hydrogen In a Chemically Bound State In Liqu...mentioning

confidence: 99%

Using Hydrogen Reactors to Improve the Diesel Engine Performance

et al. 2022

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This work is aimed at solving the problem of converting diesel power drives to diesel–hydrogen fuels, which are more environmentally friendly and less expensive alternatives to diesel fuel. The method of increasing the energy efficiency of diesel fuels has been improved. The thermochemical essence of using methanol as an alternative fuel to increase energy efficiency based on the provisions of thermotechnics is considered. Alternative methanol fuel has been chosen as the initial product for the hydrogen conversion process, and its energy value, cost, and temperature conditions have been taken into account. Calculations showed that the caloric effect from the combustion of the converted mixture of hydrogen H2 and carbon monoxide CO exceeds the effect from the combustion of the same amount of methanol fuel. Engine power and fuel energy were increased due to the thermochemical regeneration of engine exhaust gas heat. An experimental setup was created to study the operation of a converted diesel engine on diesel–hydrogen products. Experimental studies of power and environmental parameters of a diesel engine converted for diesel–hydrogen products were performed. The studies showed that the conversion of diesel engines to operate using diesel–hydrogen products is technically feasible. A reduction in energy consumption was accompanied by an improvement in the environmental performance of the diesel–hydrogen engine working together with a chemical methanol conversion thermoreactor. The formation of carbon monoxide occurred in the range of 52–62%; nitrogen oxides in the exhaust gases decreased by 53–60% according to the crankshaft speed and loading on the experimental engine. In addition, soot emissions were reduced by 17% for the engine fueled with the diesel–hydrogen fuel. The conversion of diesel engines for diesel–hydrogen products is very profitable because the price of methanol is, on average, 10–20% of the cost of petroleum fuel.

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Section: Accumulation Of Hydrogen In a Chemically Bound State In Liqu...mentioning

confidence: 99%

Using Hydrogen Reactors to Improve the Diesel Engine Performance

et al. 2022

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“…85,92 On-board hydrogen production has also been explored in the research literature, both by electrolysis and steam-methane reforming. 47,[100][101][102] HYDI have reported an increase in power and improved fuel efficiency. 84 The system takes 4-8 hours to t and does not require engine modication, since only a small energy share of hydrogen is used.…”

Section: Jcb and Cumminsmentioning

confidence: 99%

Decarbonisation of heavy-duty diesel engines using hydrogen fuel: a review of the potential impact on NO_x emissions

Wright

Lewis

2022

Environ. Sci.: Atmos.

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“…It is a well-known that, the limitation of global energy resources and severe air pollution from fossil fuel have led to urgent concern around the world (Chen et al, 2017). The global oil consumption from transportation sector accounts for about 50%, nearly 25% of CO2 derived from traffic-related emissions (Chang et al, 2017).…”

Section: Accepted Manuscript 1 Introductionmentioning

confidence: 99%

“…Especially, hydrogen have been considered as sustainable options for diminishing petroleum-dependence and air pollutants emissions (Chang et al, 2017). Concerning on both limited fossil fuel and severe air pollution issues, hydrogen as an additive energy is able to improve engine efficiency and diminish the regulated and unregulated pollutant emissions (Chen et al, 2017;Jhang et al, 2018Jhang et al, , 2016. Hamdan et al (2015) has been stated that injecting small amount of hydrogen in diesel engine not only decreases the heterogeneity of diesel fuel spray but also reduces the combustion duration.…”

Section: Accepted Manuscript 1 Introductionmentioning

confidence: 99%

“…In order to overcome this issue, one method is to generate the hydrogen on-board by using water electrolysis hydrogen generator. The hydrogen is extracted from water by using very less power to operate, which provides a continuous amount of hydrogen to reach the engine combustion chamber through the air inlet manifold (Chen et al, 2017). The layout has the benefit since the hydrogen provides followed by the vehicle starting up and running and finished as the engine is switched off.…”

Section: Accepted Manuscript 1 Introductionmentioning

confidence: 99%

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Energy Saving and Pollutant Emission Reduction by Adding Hydrogen in a Gasoline-fueled Engine

Lin

Jhang

et al. 2022

Aerosol Air Qual. Res.

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Pollution reduction related to combustion engines is considered to be an important issue around the world. Hydrogen as an additive energy has been utilized for alternative fuel since it need not require any modification. Particularly, it has been considered as a sustainable option for diminishing petroleum dependence and air pollutant emissions. In this study, we investigated the tailpipe emission with hydrogen addition for different driving behavior such as cold-start, idle, urban (UDC) and extra-urban (EUDC) under New European Driving Cycle (NEDC). The results showed that urban driving could attribute the most emissions in comparison to the high speed mode. Hydrogen addition enhanced the combustion process and the average reduction rates were observed 21.6% & 65.8% for hydrocarbon (HC), 2.37% & 85.4% for carbon monoxide (CO), and 7.53% & 59.3% for nitrogen oxides (NOx) when run at UDC and EUDC, respectively. The wide flammability of hydrogen ensures a homogeneous fuel-air mixture for complete combustion and reduces the HC, CO and NOx emissions. It is noteworthy that starting with less amount of hydrogen could greatly decrease HC followed by CO and NOx. Compared to conventional gasoline (G0), the average fuel consumption was reduced by 1.3% when a small amount of hydrogen was applied as an additive fuel.

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An onboard hydrogen generator for hydrogen enhanced combustion with internal combustion engine

Cited by 37 publications

References 7 publications

Using Hydrogen Reactors to Improve the Diesel Engine Performance

Using Hydrogen Reactors to Improve the Diesel Engine Performance

Decarbonisation of heavy-duty diesel engines using hydrogen fuel: a review of the potential impact on NO_x emissions

Energy Saving and Pollutant Emission Reduction by Adding Hydrogen in a Gasoline-fueled Engine

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An onboard hydrogen generator for hydrogen enhanced combustion with internal combustion engine

Cited by 37 publications

References 7 publications

Using Hydrogen Reactors to Improve the Diesel Engine Performance

Using Hydrogen Reactors to Improve the Diesel Engine Performance

Decarbonisation of heavy-duty diesel engines using hydrogen fuel: a review of the potential impact on NOx emissions

Energy Saving and Pollutant Emission Reduction by Adding Hydrogen in a Gasoline-fueled Engine

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Product

Resources

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Decarbonisation of heavy-duty diesel engines using hydrogen fuel: a review of the potential impact on NO_x emissions