Potential of long-chain oxymethylene ether and oxymethylene ether-diesel blends for ultra-low emission engines

Omari, Ahmad; Heuser, Benedikt; Pischinger, Stefan; Rüdinger, Christoph

doi:10.1016/j.apenergy.2019.02.035

Cited by 115 publications

(101 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Facing increasingly strict emissions regulations and a gradually growing energy crisis, investigators are pursuing the efficient and clean combustion of diesel. The optimization of fuel characteristics by blending oxygenated fuels is an effective way to achieve this objective 4 – 6 . Once the oxygenated fuel is blended with diesel, the physical and chemical properties of the blended fuel, e.g., the oxygen content, cetane number, and latent heat of evaporation, are changed accordingly, thereby altering the spray characteristics, combustion features, power performance, and emission characteristics of diesel engines 7 – 11 .…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the effects of blending PODEn on performance, combustion and emission characteristics of heavy-duty diesel engines meeting China VI emission standard

Zhao

Geng

Weibo

et al. 2021

Sci Rep

View full text Add to dashboard Cite

To study the influence of diesel fuel blended with polyoxymethylene dimethyl ethers (PODEn), a new alternative fuel with a high oxygen content and large cetane number, on the combustion characteristics, fuel economies, and emission characteristics of heavy-duty diesel engines that meet China VI emission standards, relevant tests were conducted on a supercharged intercooled high-pressure common-rail diesel engine. The PODEn were blended with diesel fuel at three different ratios (volume fractions of 10%, 20%, and 30%). The test results showed that the PODEn could optimize the combustion process of diesel engines that met the China VI emission standards, effectively improve the thermal efficiencies of diesel engines, and reduce the emissions of hydrocarbon (HC), carbon monoxide (CO), and soot. With an increase in the PODEn blending ratio, the peak values of the in-cylinder pressure, average in-cylinder temperature, and instantaneous heat release rate gradually decreased, and each peak progressively moved forward. As the start of combustion gradually moved forward, the combustion duration was shortened by 0.7–2.8°CA, the heat release process became more concentrated, and the effective thermal efficiency was increased by up to 2.57%. The effective fuel consumption gradually increased, yet the equivalent effective fuel consumption gradually decreased, with the largest drop being as high as 4.55%. The nitrogen oxides (NOx) emission increased slightly, and the emissions of HC, CO, and soot gradually decreased. The emissions of CO and soot declined significantly under high-speed and high-load conditions, with the highest reductions reaching 66.2% and 76.3%, respectively.

show abstract

Section: Introductionmentioning

confidence: 99%

Experimental study on the effects of blending PODEn on performance, combustion and emission characteristics of heavy-duty diesel engines meeting China VI emission standard

Zhao

Geng

Weibo

et al. 2021

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Proposed fuel classes include, among others, cellulosic biofuels such as the furanic family [17 , 18] and synthetic fuels such as oxymethylene ethers (OMEs, CH 3 O(CH 2 O) n CH 3 ). The latter, attractive diesel replacement fuels, offer large pollutant reduction potential owing to their molecular structure featuring only C 1 units [21 , 22] . These oligomeric ether compounds can be synthesized through different steps from hydrogen (H 2 ) and CO 2 , best using electricity from renewables for hydrogen production.…”

Section: Setting the Stage: Combustion And Chemistry In Contextmentioning

confidence: 99%

Combustion in the future: The importance of chemistry

Kohse‐Höinghaus

2021

Proceedings of the Combustion Institute

View full text Add to dashboard Cite

Combustion involves chemical reactions that are often highly exothermic. Combustion systems utilize the energy of chemical compounds released during this reactive process for transportation, to generate electric power, or to provide heat for various applications. Chemistry and combustion are interlinked in several ways. The outcome of a combustion process in terms of its energy and material balance, regarding the delivery of useful work as well as the generation of harmful emissions, depends sensitively on the molecular nature of the respective fuel. The design of efficient, low-emission combustion processes in compliance with air quality and climate goals suggests a closer inspection of the molecular properties and reactions of conventional, bio-derived, and synthetic fuels. Information about flammability, reaction intensity, and potentially hazardous combustion by-products is important also for safety considerations. Moreover, some of the compounds that serve as fuels can assume important roles in chemical energy storage and conversion. Combustion processes can furthermore be used to synthesize materials with attractive properties. A systematic understanding of the combustion behavior thus demands chemical knowledge. Desirable information includes properties of the thermodynamic states before and after the combustion reactions and relevant details about the dynamic processes that occur during the reactive transformations from the fuel and oxidizer to the products under the given boundary conditions. Combustion systems can be described, tailored, and improved by taking chemical knowledge into account. Combining theory, experiment, model development, simulation, and a systematic analysis of uncertainties enables qualitative or even quantitative predictions for many combustion situations of practical relevance. This article can highlight only a few of the numerous investigations on chemical processes for combustion and combustion-related science and applications, with a main focus on gas-phase reaction systems. It attempts to provide a snapshot of recent progress and a guide to exciting opportunities that drive such research beyond fossil combustion.

show abstract

“…Additionally, reasonable global warming potential (GWP) reductions were achieved . Similar improvements can be expected for the production of OME 3–5 , which offer a better compatibility with existing diesel engines while maintaining outstanding combustion properties . Their production with established process concepts is limited to about 54 % starting from H 2 and CO 2 , whereas novel process technologies reach an efficiency of up to 72 % .…”

Section: The Role Of Pse In Power‐to‐x – Illustrative Examplesmentioning

confidence: 99%

Power‐to‐X: Between Electricity Storage, e‐Production, and Demand Side Management

Burre

Bongartz

Brée

et al. 2019

Chemie Ingenieur Technik

View full text Add to dashboard Cite

This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.The common understanding of Power-to-X is exclusively the use of renewable electricity to manufacture products currently based on fossil sources. In this paper, it is argued that beyond such e-Production many of these technologies also include aspects related to demand side management and temporal storage of electricity. Therefore, a definition of Powerto-X is suggested that encompasses all three aspects. It is discussed, which of these are relevant under which conditions and illustrative examples are highlighted, which show how process systems engineering can help address common challenges for Power-to-X technologies.

show abstract

Potential of long-chain oxymethylene ether and oxymethylene ether-diesel blends for ultra-low emission engines

Cited by 115 publications

References 19 publications

Experimental study on the effects of blending PODEn on performance, combustion and emission characteristics of heavy-duty diesel engines meeting China VI emission standard

Experimental study on the effects of blending PODEn on performance, combustion and emission characteristics of heavy-duty diesel engines meeting China VI emission standard

Combustion in the future: The importance of chemistry

Power‐to‐X: Between Electricity Storage, e‐Production, and Demand Side Management

Contact Info

Product

Resources

About