Experimental investigation of hydrogen addition in the intake air of compressed ignition engines running on biodiesel blend

Rocha, Hendrick Maxil Zárate; Pereira, Ricardo da Silva; Nogueira, Manoel; Belchior, Carlos Rodrigues Pereira; Tostes, Maria Emília de Lima

doi:10.1016/j.ijhydene.2016.11.032

Cited by 59 publications

(19 citation statements)

References 31 publications

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“…Therefore ROHR increased by 26.3-27.1% and λ did not make significant effect. However this gain of ROHR determines the increase of NO with λ = 1.44-1.66, from 535 ppm with HES = 16% to 965 ppm with HES of 32% at the NL (Figure 7) and matches well with the test results of other researchers (Barrios et al, 2017;Rocha et al, 2016).…”

Section: Results Of the Research And Discussionsupporting

confidence: 88%

“…The biggest influence on the ITE, was made by increased mass flow rate of the hydrogen as the response to the decreased total fuel mass flow rate and ISFC ( Figure 5). The increased hydrogen increment rate caused the decrease of C/H ratio and that causes the reduction of CO and CO 2 emission in the exhaust gas as well as reduction of its smokiness as shown at the Figure 8 (Aldhaidhawi et al, 2017;Barrios, Domínguez-Sáez, & Hormigo, 2017;Rocha, Pereira, Nogueira, Belchior, & Tostes, 2016).…”

Section: Results Of the Research And Discussionmentioning

confidence: 97%

See 1 more Smart Citation

Rme Co-Combustion With Hydrogen in Compression Ignition Engine: Performance, Efficiency and Emissions / Slėginio Uždegimo Variklio Energinių, Efektyvumo Ir Deginių Emisijos Rodiklių Tyrimas Naudojant Rapsų Metilesterį Ir Vandenilį

Juknelevičius

2018

Science - Future of Lithuania

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The article presents the test results of the single cylinder CI engine with common rail injection system operating on biofuel – Rapeseed Methyl Ester with addition supply of hydrogen. The purpose of this investigation was to examine the influence of the hydrogen addition to the biofuel on combustion phases, engine performance, efficiency, and exhaust emissions. HES was changed within the range from 0 to 44%. Hydrogen was injected into the intake manifold, where it created homogeneous mixture with air. Tests were performed at both fixed and optimal injection timings at low, medium and nominal engine load. After analysis of the engine bench tests and simulation with AVL BOOST software, it was observed that lean hydrogen – RME mixture does not support the ﬂame propagation and efficient combustion. While at the rich fuel mixture and with increasing hydrogen fraction, the combustion intensity concentrate at the beginning of the combustion process and shortened the ignition delay phase. AVL BOOST simulation performed within the wide range of HES (16–80%) revealed that combustion intensity moves to the beginning of combustion with increase of HES. Decrease of CO, CO2 and smoke opacity was observed with increase of hydrogen amounts to the engine. However, increase of the NO concentration in the engine exhaust gases was observed. Santrauka Straipsnyje pateikti tyrimo rezultatai, gauti atlikus bandymą vieno cilindro slėginio uždegimo variklyje su biodegalais – rapsų metilesterį (RME) ir vandenilį. Biodegalai įpurškiami akumuliatorine įpurškimo sistema „Common rail“. Šio tyrimo tikslas – ištirti, kaip vandenilis veikia biodegalų degimą, variklio veikimą, jo efektyvumą ir deginių susidarymą. Vandenilio energinė dalis degimo mišinyje buvo keičiama nuo 0 iki 44 %. Vandenilis buvo tiekiamas įsiurbimo fazės metu įsiurbimo kanalu į degimo kamerą, kurioje jis, susimaišęs su oru, sudaro homogeninį mišinį. Bandymai buvo atliekami nekeičiant įpurškimo kampo, nustačius optimalų įpurškimo kampą esant žemai, vidutinei ir nominaliai variklio apkrovai. Išnagrinėjus variklio bandymų rezultatus ir sumodeliavu AVL BOOST programa, buvo pastebėta, kad, esant liesam vandenilio ir RME mišiniui, liepsnos plitimas yra lėtas, mišinys dega neveiksmingai. Tačiau riebus degalų mišinys ir padidinta vandenilio energijos dalis užtikrina degimo intensyvumą degimo proceso pradžioje ir sutrumpina uždegimo gaišties trukmę. AVL BOOST modeliavimas, atliktas plačiu vandenilio energijos dalies diapazonu (16–80 %), patvirtino teiginį, kad degimas tampa intensyvesnis degimo pradžioje dėl padidinto vandenilio kiekio. Didinant vandenilio kiekį, buvo pastebėta, kad išmetamosiose dujose sumažėjo CO, CO2 ir kietųjų dalelių, tačiau padidėjo NO koncentracija.

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Section: Results Of the Research And Discussionsupporting

confidence: 88%

Section: Results Of the Research And Discussionmentioning

confidence: 97%

Rme Co-Combustion With Hydrogen in Compression Ignition Engine: Performance, Efficiency and Emissions / Slėginio Uždegimo Variklio Energinių, Efektyvumo Ir Deginių Emisijos Rodiklių Tyrimas Naudojant Rapsų Metilesterį Ir Vandenilį

Juknelevičius

2018

Science - Future of Lithuania

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“…The HRF used during tests has lower C/H ratio in compare to the petrol DF: PRO Diesel by 4.7% while HVO by 8.2%. On top of that, the increased hydrogen increment rate caused further decrease of C/H ratio and that causes reduction of CO and CO 2 emission (Figures 7 and 8) in the exhaust gas as well as reduction of its smokiness as shown at the Figure 9 (Aldhaidhawi, Chiriac, Bădescu, Descombes, & Podevin, 2017;Barrios et al, 2017;Rocha, Pereira, Nogueira, Belchior, & Tostes, 2016). Other reason is that, increase of HES makes better-homogenized mixture of air and LRF, which leads to the decrease of smokiness.…”

Section: Results Of the Research And Discussionmentioning

confidence: 92%

Experimental Investigations of Hydrogen Effects on Performance and Emissions of Renewable Diesel Fueled Rcci / Vandenilio Įtaka Energiniams Ir Emisijos Rodikliams Alternatyviu Dyzelinu Veikiančiame Rcci Variklyje – Eksperimentinis Tyrimas

Juknelevičius

2018

Science - Future of Lithuania

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The article presents the study of hydrogen effects on performance, combustion and emissions characteristics of renewable diesel fueled single cylinder CI engine with common rail injection system in RCCI mode. The renewable diesel fuels as the HRF are the HVO and it blend with petrol diesel further named PRO Diesel, investigated in this study. The purpose of this investigation was to examine the influence of the LRF – hydrogen addition to the HRF on combustion phases, engine performance, efficiency, and exhaust emissions. HES was changed within the range from 0 to 35%. Hydrogen injected through PFI during intake stroke to the combustion chamber, where it created homogeneous mixture with air. The HRF was directly injected into combustion chamber using electronic controlled unit. Tests were performed at both fixed and optimal injection timings at low, medium and nominal engine load. After analysis of the engine bench results, it was observed that lean hydrogen – HRF mixture does not support the ﬂame propagation and efficient combustion. While at the rich fuel mixture and with increasing hydrogen fraction, the combustion intensity concentrate at the beginning of the combustion process and shortened the ignition delay phase. Decrease of CO, CO2 and smoke opacity was observed with increase of hydrogen amounts to the engine. However, increase of the NO concentration in the engine exhaust gases was observed.

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“…Rocha et al [21] installed a small L-shaped tube in the center of the intake pipe. They anticipated that the fluctuations due to the rapid functioning of both valves improve the mixing of hydrogen and air.…”

Section: Hydrogen Additionmentioning

confidence: 99%

“…The results showed a reduction in specific fuel consumption besides a decrease in emissions such as carbon dioxide (CO 2 ), carbon mono-oxide (CO) and hydrocarbons (HC). However, there was an increase in nitrogen oxide (NOx) due to a higher cylinder temperature [21]. An experimental and numerical study on combustion and performance was conducted with 20% rapeseed biodiesel and 80% diesel with different fractions of hydrogen contents.…”

Section: Hydrogen Additionmentioning

confidence: 99%

A Review of Performance-Enhancing Innovative Modifications in Biodiesel Engines

Khan

2020

Energies

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The ever-increasing demand for transport is sustained by internal combustion (IC) engines. The demand for transport energy is large and continuously increasing across the globe. Though there are few alternative options emerging that may eliminate the IC engine, they are in a developing stage, meaning the burden of transportation has to be borne by IC engines until at least the near future. Hence, IC engines continue to be the prime mechanism to sustain transportation in general. However, the scarcity of fossil fuels and its rising prices have forced nations to look for alternate fuels. Biodiesel has been emerged as the replacement of diesel as fuel for diesel engines. The use of biodiesel in the existing diesel engine is not that efficient when it is compared with diesel run engine. Therefore, the biodiesel engine must be suitably improved in its design and developments pertaining to the intake manifold, fuel injection system, combustion chamber and exhaust manifold to get the maximum power output, improved brake thermal efficiency with reduced fuel consumption and exhaust emissions that are compatible with international standards. This paper reviews the efforts put by different researchers in modifying the engine components and systems to develop a diesel engine run on biodiesel for better performance, progressive combustion and improved emissions.

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Experimental investigation of hydrogen addition in the intake air of compressed ignition engines running on biodiesel blend

Cited by 59 publications

References 31 publications

Rme Co-Combustion With Hydrogen in Compression Ignition Engine: Performance, Efficiency and Emissions / Slėginio Uždegimo Variklio Energinių, Efektyvumo Ir Deginių Emisijos Rodiklių Tyrimas Naudojant Rapsų Metilesterį Ir Vandenilį

Rme Co-Combustion With Hydrogen in Compression Ignition Engine: Performance, Efficiency and Emissions / Slėginio Uždegimo Variklio Energinių, Efektyvumo Ir Deginių Emisijos Rodiklių Tyrimas Naudojant Rapsų Metilesterį Ir Vandenilį

Experimental Investigations of Hydrogen Effects on Performance and Emissions of Renewable Diesel Fueled Rcci / Vandenilio Įtaka Energiniams Ir Emisijos Rodikliams Alternatyviu Dyzelinu Veikiančiame Rcci Variklyje – Eksperimentinis Tyrimas

A Review of Performance-Enhancing Innovative Modifications in Biodiesel Engines

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