Effect of Diesel/methanol compound combustion on Diesel engine combustion and emissions

Yao, Chunde; Cheung, Chun Shun; Cheng, C. H.; Wang, Yinshan; Chan, Tat Leung; Lee, Shuncheng

doi:10.1016/j.enconman.2007.11.007

Cited by 212 publications

(80 citation statements)

References 16 publications

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“…Its range of production sources and its chemical structure, with a high oxygen content and no C-C bonds, causes methanol to be one of the most important oxygenated additives. For these reasons, a number of studies have addressed the use of methanol-diesel blends in diesel engines [2][3][4][5]. Most of the authors conclude that the addition of methanol reduces the emissions of particulates and NO x , even though some reported results seem contradictory.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Kinetic Modeling Study of Methanol Ignition and Oxidation at High Pressure

Aranda

Christensen

Alzueta

et al. 2013

Int J of Chemical Kinetics

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A detailed chemical kinetic model for oxidation of CH 3 OH at high pressure and intermediate temperatures has been developed and validated experimentally. Ab initio calculations and RRKM analysis were used to obtain rate coefficients for key reactions of CH 2 OH and CH 3 O (dissociation, isomerization, reaction with O 2 ). The experiments, involving CH 3 OH/O 2 mixtures diluted in N 2 , were carried out in a high pressure flow reactor at 600-900 K and 20-100 bar, varying the reaction stoichiometry from very lean to fuel-rich conditions. Under the conditions studied, the onset temperature for methanol oxidation was not dependent on the stoichiometry, while increasing pressure shifted the ignition temperature towards lower values. Model predictions of the present experimental results, as well as Rapid Compression Machine (RCM) data from the literature, were generally satisfactory. The governing reaction pathways have been outlined based on calculations with the kinetic model. Unlike what has been observed for unsaturated hydrocarbons, the oxidation 2 pathways for CH 3 OH under the investigated conditions were very similar to those prevailing at higher temperatures and lower pressures. At the high pressures, the modeling predictions for onset of reaction were particularly sensitive to the CH 3 OH+HO 2 ⇌CH 2 OH+H 2 O 2 reaction.

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Section: Introductionmentioning

confidence: 99%

Experimental and Kinetic Modeling Study of Methanol Ignition and Oxidation at High Pressure

Aranda

Christensen

Alzueta

et al. 2013

Int J of Chemical Kinetics

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“…The relative importance of these two channels 29 is critical for combustion modeling as the subsequent chemistries of the product radicals (CH3O 30 and CH2OH) are markedly different. In this work, we measured overall rate coefficients for the 31 reaction of methanol (CH3OH), methanol-d3 (CD3OH) and methanol-d1 (CH2DOH) with OH 32 radicals over the temperature range of 900 −1300 K and pressures near 1 exp (−59.8 )…”

mentioning

confidence: 99%

A shock tube kinetic study on the branching ratio of methanol + OH reaction

Liu

Giri

Farooq

2019

Proceedings of the Combustion Institute

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24Methanol (CH3OH) is the simplest alcohol and is considered to be a future fuel, produced by 25 solar-driven reduction of carbon dioxide. The reaction of methanol and hydroxyl radicals is 26 important in both combustion and atmospheric systems because this reaction is the dominant 27 consumption pathway for methanol oxidation. Hydrogen abstraction at the CH3 or OH site of 28 CH3OH leads to different radical intermediates. The relative importance of these two channels 29 is critical for combustion modeling as the subsequent chemistries of the product radicals (CH3O 30 and CH2OH) are markedly different. In this work, we measured overall rate coefficients for the 31 reaction of methanol (CH3OH), methanol-d3 (CD3OH) and methanol-d1 (CH2DOH) Using our measured total rate coefficients, we determined site-specific H-abstraction rate 38 coefficients, and, hence, branching ratios of the two abstraction channels. Our results show that 39 abstraction at the CH3 site is the dominant channel, contributing more than 80% throughout our 40 temperature range. Our calculated site-specific rate coefficients (per H atom) over 900 -1300 41

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“…Termal NO X yanma odasındaki nitrojenin yüksek sıcaklıklarda oksidasyonu yoluyla oluşan NO X olarak adlandırılır. NO X oluşum oranı yanma sıcaklığı, sıcaklığa nitrojenin maruz kalma süresi ve yanma odasındaki reaksiyon bölgelerindeki oksijen içeriğinin bir fonksiyonudur (Yao, et al 2008). Motor hızına bağlı olarak NO X emisyonu değişimi Şekil 6'da verilmiştir.…”

Section: Motor Performans Ve Egzoz Emisyonlarına Etkisiunclassified

Optimization of Biodiesel Production from Mustard Oil and Engine Performance Tests

Aysal¹,

Aksoy²,

Şahin³

et al. 2014

AKU-J. Sci. Eng.

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In this study mustard oil produced from biodiesel production process are optimized. Parameters such as methanol / oil ratio, the catalyst concentration, reaction time and temperature have been investigated in the optimization process. Mustard oil-diesel fuel consisting of blends at the different proportions has been examined effects on engine performance and exhaust emissions. While proportion of biodiesel rising, power and torque of the internal combustion engine are reduced and specific fuel consumption (SFC) is increased. In addition, biodiesel, diesel fuels and blends of biodiesel-diesel fuels were investigated and their compared to NO x and CO emissions. It is found that biodiesel of mustard oil emissions more less than that of diesel fuel.

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Effect of Diesel/methanol compound combustion on Diesel engine combustion and emissions

Cited by 212 publications

References 16 publications

Experimental and Kinetic Modeling Study of Methanol Ignition and Oxidation at High Pressure

Experimental and Kinetic Modeling Study of Methanol Ignition and Oxidation at High Pressure

A shock tube kinetic study on the branching ratio of methanol + OH reaction

Optimization of Biodiesel Production from Mustard Oil and Engine Performance Tests

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