The effect of hydrogen addition to
            <i>Cynara</i>
            biodiesel on engine performance and emissions in diesel engine

Köse, Hüseyin; Acaroğlu, Mustafa

doi:10.1080/15567036.2020.1765904

Cited by 9 publications

(2 citation statements)

References 32 publications

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“…Fossil fuel plays a leading role in the global energy scenario [1]. Crude oil is expected to become extremely scarce and expensive [2]. Petroleum based fuels are used in industries, transportation, power plants and agricultural sectors, respectively [3].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigations into engine characteristics fuelled with hibiscus coconut biodiesel and its blends

2023

IJATEE

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The world's fossil fuel sources are decreasing rapidly. Rising population growth needs alternative fuels. Biodiesel is an alternate and sustainable fuel obtained from different feedstocks. In this work, biodiesel was made from hibiscus-coconut oil by the transesterification technique. The aim of the present research is to investigate the emissions, combustion and performance characteristics of a single-cylinder variable compression ratio diesel engine fuelled with hibiscus-coconut biodiesel blends. The blends of B05 (5% biodiesel and 95% diesel), B10 (10% biodiesel and 90% diesel), and B15 (15% biodiesel and 85% diesel) were prepared with hibiscus-coconut biodiesel and diesel. The engine is running at a speed of 1500 rpm and a compression ratio of 17.5:1 at various loads. The experimental findings are compared with those of diesel fuel. The brake thermal efficiency (BTE) and brake power (BP) were improved by 2.48% and 1.78% for blend B15 at peak load. The brake specific fuel consumption is the same as that of diesel. The maximum cylinder pressure is 63.82 bar.Carbon monoxide, hydrocarbon emissions and smoke have decreased by 18.03%, 13.79% and 52.71%, respectively. There is a marginal increment in nitrogen oxides of 14.37%. The blend B15 is acceptable for diesel engines as a renewable fuel. Thus, the findings show that, without any modification to the engine, the blend B15 can be utilized as an alternate fuel for diesel engines.

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Section: Introductionmentioning

confidence: 99%

Experimental investigations into engine characteristics fuelled with hibiscus coconut biodiesel and its blends

2023

IJATEE

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“…The addition of hydrogen positively affected engine performance and reduced emissions of toxic exhaust components, excluding NOx. Köse and Acaro glu [17] investigated the effect of varying proportions of hydrogen co-combusted with diesel fuel, biodiesel, and a mixture of diesel fuel and biodiesel at low hydrogen concentrations. They found that the diesel-biodiesel mixture with 2.5% hydrogen resulted in the highest power output, while the greatest efficiency was achieved by the engine fueled solely by biodiesel with 2.5% hydrogen.…”

Section: Introductionmentioning

confidence: 99%

Co-Combustion of Hydrogen with Diesel and Biodiesel (RME) in a Dual-Fuel Compression-Ignition Engine

2023

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The utilization of hydrogen for reciprocating internal combustion engines remains a subject that necessitates thorough research and careful analysis. This paper presents a study on the co-combustion of hydrogen with diesel fuel and biodiesel (RME) in a compression-ignition piston engine operating at maximum load, with a hydrogen content of up to 34%. The research employed engine indication and exhaust emissions measurement to assess the engine’s performance. Engine indication allowed for the determination of key combustion stages, including ignition delay, combustion time, and the angle of 50% heat release. Furthermore, important operational parameters such as indicated pressure, thermal efficiency, and specific energy consumption were determined. The evaluation of dual-fuel engine stability was conducted by analyzing variations in the coefficient of variation in indicated mean effective pressure. The increase in the proportion of hydrogen co-combusted with diesel fuel and biodiesel had a negligible impact on ignition delay and led to a reduction in combustion time. This effect was more pronounced when using biodiesel (RME). In terms of energy efficiency, a 12% hydrogen content resulted in the highest efficiency for the dual-fuel engine. However, greater efficiency gains were observed when the engine was powered by RME. It should be noted that the hydrogen-powered engine using RME exhibited slightly less stable operation, as measured by the COVIMEP value. Regarding emissions, hydrogen as a fuel in compression ignition engines demonstrated favorable outcomes for CO, CO2, and soot emissions, while NO and HC emissions increased.

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Synergetic influence of urea addition on performance and emissions of hydrogen–diesel dual fuel engine

Gad,

Elsakhawy,

Baz

et al. 2024

J Therm Anal Calorim

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An important measure that shows the total amount of greenhouse gases released into the environment is the carbon footprint by using fossil fuels. Sustainable alternatives are seen as an effective step in both preventing the depletion of fossil fuels and combating climate change. To overcome these negative consequences, the use of area with hydrogen is becoming increasingly popular among fuel researchers. However, the application of hydrogen as a fuel can potentially increase NOx emissions. For this reason, water–urea solution of 5% by volume was added to diesel–hydrogen dual fuel engine. Subsequently, the intake manifold was supplied with 1 LPM of hydrogen. Different engine loads were evaluated, while diesel engine was operated at 1500 rpm rated speed. As a result, the addition of 5% urea and 1 LPM of hydrogen to diesel led to a decrease in BSFC by 23% and an improvement in thermal efficiency by 25% compared to diesel fuel. Blend of diesel oil with urea and hydrogen decreased EGT by 2% lower than diesel oil. NOx, CO, HC and CO2 concentrations were decreased by 5, 61, 13 and 53%, respectively, when diesel was mixed with urea and hydrogen about diesel oil. Engine performance may be improved, and exhaust pollutants can be reduced by utilizing diesel oil combined with hydrogen and urea as an alternative fuel.

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The effect of hydrogen addition to Cynara biodiesel on engine performance and emissions in diesel engine

Cited by 9 publications

References 32 publications

Experimental investigations into engine characteristics fuelled with hibiscus coconut biodiesel and its blends

Experimental investigations into engine characteristics fuelled with hibiscus coconut biodiesel and its blends

Co-Combustion of Hydrogen with Diesel and Biodiesel (RME) in a Dual-Fuel Compression-Ignition Engine

Synergetic influence of urea addition on performance and emissions of hydrogen–diesel dual fuel engine

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