Compensation for the differences in LHV of diesel-OME blends by using injector nozzles with different number of holes: Emissions and combustion

Parravicini, Matteo; Barro, Christophe; Boulouchos, Konstantinos

doi:10.1016/j.fuel.2019.116166

Cited by 30 publications

(16 citation statements)

References 10 publications

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“…The transmission electron microscopy (TEM) investigations by Barro et al using an energy-dispersive X-ray system revealed that these soot particles contained a few nm-size metal inclusions. Parravicini et al [139] optimized injector nozzles for two diesel-OME blends with 23% and 42% OME (80% OME3; 20% OME4). They [139] reported that the lower concentration of OME in diesel also improved NOx emissions and that the reduction in soot was higher than 75% for both mixtures at high EGR rates.…”

Section: Emission Behaviormentioning

confidence: 99%

“…Parravicini et al [139] optimized injector nozzles for two diesel-OME blends with 23% and 42% OME (80% OME3; 20% OME4). They [139] reported that the lower concentration of OME in diesel also improved NOx emissions and that the reduction in soot was higher than 75% for both mixtures at high EGR rates. Finally, all research groups reported that the addition of OME to diesel was beneficial for the NOx-soot tradeoff, whereby the reduction in NOx emissions itself demands further investigation.…”

Section: Emission Behaviormentioning

confidence: 99%

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Future Power Train Solutions for Long-Haul Trucks

et al. 2021

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Achieving the CO2 reduction targets for 2050 requires extensive measures being undertaken in all sectors. In contrast to energy generation, the transport sector has not yet been able to achieve a substantive reduction in CO2 emissions. Measures for the ever more pressing reduction in CO2 emissions from transportation include the increased use of electric vehicles powered by batteries or fuel cells. The use of fuel cells requires the production of hydrogen and the establishment of a corresponding hydrogen production system and associated infrastructure. Synthetic fuels made using carbon dioxide and sustainably-produced hydrogen can be used in the existing infrastructure and will reach the extant vehicle fleet in the medium term. All three options require a major expansion of the generation capacities for renewable electricity. Moreover, various options for road freight transport with light duty vehicles (LDVs) and heavy duty vehicles (HDVs) are analyzed and compared. In addition to efficiency throughout the entire value chain, well-to-wheel efficiency and also other aspects play an important role in this comparison. These include: (a) the possibility of large-scale energy storage in the sense of so-called ‘sector coupling’, which is offered only by hydrogen and synthetic energy sources; (b) the use of the existing fueling station infrastructure and the applicability of the new technology on the existing fleet; (c) fulfilling the power and range requirements of the long-distance road transport.

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Section: Emission Behaviormentioning

confidence: 99%

Section: Emission Behaviormentioning

confidence: 99%

Future Power Train Solutions for Long-Haul Trucks

et al. 2021

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“…These suitable characteristics explain the recent research interest in this specific group of oxygenated fuels in the field of kinetic mechanism development (Sun et al, 2017;He et al, 2018;Cai et al, 2019;Li et al, 2020;Bai et al, 2021;Niu et al, 2021), their application in engine simulations (Lin et al, 2019;Lv et al, 2019;Ren et al, 2019) or for different synthesis methods (Gierlich et al, 2020;Klokic et al, 2020), and the assessment of the overall carbon impact (Mahbub et al, 2019;Bokinge et al, 2020). The application of oxymethylene ethers in engines in combination with their emission propensity has been investigated in several studies (Pellegrini et al, 2013;Barro et al, 2018;Huang et al, 2018;Liu et al, 2019;Ren et al, 2019;LeBlanc et al, 2020;Parravicini et al, 2020;Pélerin et al, 2020), while fewer investigations have been conducted, notably, into soot formation for pure or blended OMEs in canonical flames (Ferraro et al, 2021;Tan et al, 2021). Hence, this work addresses the potential of oxymethylene ether-3 (OME 3 ) and its effect on soot particle formation and growth to deeply understand the soot suppression phenomenon in a simple configuration and in blending with a well-known fuel such as ethylene.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation on the Effect of the Oxymethylene Ether-3 (OME3) Blending Ratio in Premixed Sooting Ethylene Flames

et al. 2021

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Synthetic fuels, especially oxygenated fuels, which can be used as blending components, make it possible to modify the emission properties of conventional fossil fuels. Among oxygenated fuels, one promising candidate is oxymethylene ether-3 (OME3). In this work, the sooting propensity of ethylene (C2H4) blended with OME3 is numerically investigated on a series of laminar burner-stabilized premixed flames with increasing amounts of OME3, from pure ethylene to pure OME3. The numerical analysis is performed using the Conditional Quadrature Method of Moments combined with a detailed physico-chemical soot model. Two different equivalence ratios corresponding to a lightly and a highly sooting flame condition have been investigated. The study examines how different blending ratios of the two fuels affect soot particle formation and a correlation between OME3 blending ratio and corresponding soot reduction is established. The soot precursor species in the gas-phase are analyzed along with the soot volume fraction of small nanoparticles and large aggregates. Furthermore, the influence of the OME3 blending on the particle size distribution is studied applying the entropy maximization concept. The effect of increasing amounts of OME3 is found to be different for soot nanoparticles and larger aggregates. While OME3 blending significantly reduces the amount of larger aggregates, only large amounts of OME3, close to pure OME3, lead to a considerable suppression of nanoparticles formed throughout the flame. A linear correlation is identified between the OME3 content in the fuel and the reduction in the soot volume fraction of larger aggregates, while smaller blending ratios may lead to an increased number of nanoparticles for some positions in the flame for the richer flame condition.

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“…On the other side of the spectrum are the (optically accessible) single cylinder engines. Full metal engines (as in [15][16][17]) can offer only limited (endoscopic) access into the cylinder, but impose no limits regarding cylinder pressures and temperatures and operating times (i.e., thermal load). With improving optical access, limitations regarding peak pressures, temperatures and thermal loading (number of operating cycles) play an increasingly important role [18].…”

Section: Introductionmentioning

confidence: 99%

The Flex-OeCoS—a Novel Optically Accessible Test Rig for the Investigation of Advanced Combustion Processes under Engine-Like Conditions

et al. 2020

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A new test rig has been designed, built and commissioned, and is now jointly pursued to facilitate experimental investigations into advanced combustion processes (i.e., dual fuel, multi-mode) under turbulent conditions at high, engine-like temperature and pressure levels. Based on a standard diesel engine block, it offers much improved optical access to the in-cylinder processes due to its separated and rotated arrangement of the compression volume and combustion chamber, respectively. A fully variable pneumatic valve train and the appropriate preconditioning of the intake air allows it to represent a wide range of engine-like in-cylinder conditions regarding pressures, temperatures and turbulence levels. The modular design of the test rig facilitates easy optimizations of the combustion chamber/cylinder head design regarding different experimental requirements. The name of the new test rig, Flex-OeCoS, denotes its Flexibility regarding Optical engine Combustion diagnostics and/or the development of corresponding Sensing devices and applications. Measurements regarding in-cylinder gas pressures, temperatures and the flow field under typical operating conditions are presented to complete the description and assessment of the new test rig.

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Compensation for the differences in LHV of diesel-OME blends by using injector nozzles with different number of holes: Emissions and combustion

Cited by 30 publications

References 10 publications

Future Power Train Solutions for Long-Haul Trucks

Future Power Train Solutions for Long-Haul Trucks

Numerical Investigation on the Effect of the Oxymethylene Ether-3 (OME3) Blending Ratio in Premixed Sooting Ethylene Flames

The Flex-OeCoS—a Novel Optically Accessible Test Rig for the Investigation of Advanced Combustion Processes under Engine-Like Conditions

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