8 research outputs found
Around the nostos’s experience: The returns of Antonio Dal Masetto and Martina Gusberti to the homeland
No full textLa tierra incomparable (1994) de Antonio Dal Masetto y El laúd y la guerra (1995) de Martina Gusberti son novelas de autores ítalo-argentinos en las que se narra la experiencia del regreso a la tierra natal. En ambas ficciones, el relato del νόστος (“retorno”) conduce a los escritores a realizar un proceso de reconstrucción de la biografía de sus progenitores. Debido a que cada autor, para componer sus obras, afrontó de un modo particular este tránsito ineludible por la experiencia parental, nuestro objetivo será identificar los diferentes modos de presentación de esos recuerdos en las novelas, intentando explicar, al mismo tiempo, el carácter insoslayable de esa “diamnesia” (es decir, de ese tránsito a través de la memoria del otro). La hipótesis que nos orienta afirma la existencia de una compleja relación entre el escritor, el terruño “perdido” y la capacidad de recuerdo de ese pasado italiano, que conduce a los autores a transitar las experiencias parentales –principalmente, las vinculadas a la sobrevivencia de las guerras mundiales y al proceso inmigratorio en sí mismo– y a delinear una suerte de archivo familiar que les permitirá reconfigurar su propia identidad.La tierra incomparable (1994) by Antonio Dal Masetto and El laúd y la guerra (1995) by Martina Gusberti are novels written by Italian-Argentine authors in which the experience of returning to their native land is recounted. In both fictions, the writing of the νόστος (“return”) leads the writers to carry out a process of reconstruction of the biography of their parents. Because each author faced this unavoidable transit through parental experience in a particular way, our objective will be to identify the different modes of presentation of these memories in the novels, trying to explain, at the same time, the unavoidable character of that "diamnesia" (es that is, that transit through the memory of the other). The hypothesis that guides us states the existence of a complex relationship between the writer, the "lost" homeland and the ability to remember that Italian past, which leads the authors to go through parental experiences – mainly, those linked to the world wars survival and the immigration process itself– and to outline a kind of family archive that allowed them to reconfigure their own identity.Fil: Buret, María Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones en Humanidades y Ciencias Sociales. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Instituto de Investigaciones en Humanidades y Ciencias Sociales; Argentin
Around the nostos's experience the returns of Antonio Dal Masetto and Martina Gusberti to the homeland
No full textLa tierra incomparable (1994) de Antonio Dal Masetto y El laúd y la guerra (1995) de Martina Gusberti son novelas de autores ítalo-argentinos en las que se narra la experiencia del regreso a la tierra natal. En ambas ficciones, el relato del ??Õþ?? ("retorno") conduce a los escritores a realizar un proceso de reconstrucción de la biografía de sus progenitores. Debido a que cada autor, para componer sus obras, afrontó de un modo particular este tránsito ineludible por la experiencia parental, nuestro objetivo será identificar los diferentes modos de presentación de esos recuerdos en las novelas, intentando explicar, al mismo tiempo, el carácter insoslayable de esa "diamnesia" (es decir, de ese tránsito a través de la memoria del otro). La hipótesis que nos orienta afirma la existencia de una compleja relación entre el escritor, el terruño ?perdido? y la capacidad de recuerdo de ese pasado italiano, que conduce a los autores a transitar las experiencias parentales - principalmente, las vinculadas a la sobrevivencia de las guerras mundiales y al proceso inmigratorio en sí mismo? y a delinear una suerte de archivo familiar que les permitirá reconfigurar su propia identidad.La tierra incomparable (1994) by Antonio Dal Masetto and El laúd y la guerra (1995) by Martina Gusberti are novels written by Italian-Argentine authors in which the experience of returning to their native land is recounted. In both fictions, the writing of the ??Õþ?? ("return") leads the writers to carry out a process of reconstruction of the biography of their parents. Because each author faced this unavoidable transit through parental experience in a particular way, our objective will be to identify the different modes of presentation of these memories in the novels, trying to explain, at the same time, the unavoidable character of that "diamnesia" (es that is, that transit through the memory of the other). The hypothesis that guides us states the existence of a complex relationship between the writer, the "lost" homeland and the ability to remember that Italian past, which leads the authors to go through parental experiences -mainly, those linked to the world wars survival and the immigration process itself- and to outline a kind of family archive that allowed them to reconfigure their own identity.Fil: Buret, María Florencia. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Instituto de Investigaciones en Humanidades y Ciencias Sociales (UNLP-CONICET); Argentina
Around the nostos’s experience: The returns of Antonio Dal Masetto and Martina Gusberti to the homeland
No full textLa tierra incomparable (1994) de Antonio Dal Masetto y El laúd y la guerra (1995) de Martina Gusberti son novelas de autores ítalo-argentinos en las que se narra la experiencia del regreso a la tierra natal. En ambas ficciones, el relato del νόστος (“retorno”) conduce a los escritores a realizar un proceso de reconstrucción de la biografía de sus progenitores. Debido a que cada autor, para componer sus obras, afrontó de un modo particular este tránsito ineludible por la experiencia parental, nuestro objetivo será identificar los diferentes modos de presentación de esos recuerdos en las novelas, intentando explicar, al mismo tiempo, el carácter insoslayable de esa “diamnesia” (es decir, de ese tránsito a través de la memoria del otro). La hipótesis que nos orienta afirma la existencia de una compleja relación entre el escritor, el terruño “perdido” y la capacidad de recuerdo de ese pasado italiano, que conduce a los autores a transitar las experiencias parentales –principalmente, las vinculadas a la sobrevivencia de las guerras mundiales y al proceso inmigratorio en sí mismo– y a delinear una suerte de archivo familiar que les permitirá reconfigurar su propia identidad.La tierra incomparable (1994) by Antonio Dal Masetto and El laúd y la guerra (1995) by Martina Gusberti are novels written by Italian-Argentine authors in which the experience of returning to their native land is recounted. In both fictions, the writing of the νόστος (“return”) leads the writers to carry out a process of reconstruction of the biography of their parents. Because each author faced this unavoidable transit through parental experience in a particular way, our objective will be to identify the different modes of presentation of these memories in the novels, trying to explain, at the same time, the unavoidable character of that "diamnesia" (es that is, that transit through the memory of the other). The hypothesis that guides us states the existence of a complex relationship between the writer, the "lost" homeland and the ability to remember that Italian past, which leads the authors to go through parental experiences – mainly, those linked to the world wars survival and the immigration process itself– and to outline a kind of family archive that allowed them to reconfigure their own identity.Fil: Buret, María Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones en Humanidades y Ciencias Sociales. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Instituto de Investigaciones en Humanidades y Ciencias Sociales; Argentin
Around the nostos's experience the returns of Antonio Dal Masetto and Martina Gusberti to the homeland
No full textLa tierra incomparable (1994) de Antonio Dal Masetto y El laúd y la guerra (1995) de Martina Gusberti son novelas de autores ítalo-argentinos en las que se narra la experiencia del regreso a la tierra natal. En ambas ficciones, el relato del ??Õþ?? ("retorno") conduce a los escritores a realizar un proceso de reconstrucción de la biografía de sus progenitores. Debido a que cada autor, para componer sus obras, afrontó de un modo particular este tránsito ineludible por la experiencia parental, nuestro objetivo será identificar los diferentes modos de presentación de esos recuerdos en las novelas, intentando explicar, al mismo tiempo, el carácter insoslayable de esa "diamnesia" (es decir, de ese tránsito a través de la memoria del otro). La hipótesis que nos orienta afirma la existencia de una compleja relación entre el escritor, el terruño ?perdido? y la capacidad de recuerdo de ese pasado italiano, que conduce a los autores a transitar las experiencias parentales - principalmente, las vinculadas a la sobrevivencia de las guerras mundiales y al proceso inmigratorio en sí mismo? y a delinear una suerte de archivo familiar que les permitirá reconfigurar su propia identidad.La tierra incomparable (1994) by Antonio Dal Masetto and El laúd y la guerra (1995) by Martina Gusberti are novels written by Italian-Argentine authors in which the experience of returning to their native land is recounted. In both fictions, the writing of the ??Õþ?? ("return") leads the writers to carry out a process of reconstruction of the biography of their parents. Because each author faced this unavoidable transit through parental experience in a particular way, our objective will be to identify the different modes of presentation of these memories in the novels, trying to explain, at the same time, the unavoidable character of that "diamnesia" (es that is, that transit through the memory of the other). The hypothesis that guides us states the existence of a complex relationship between the writer, the "lost" homeland and the ability to remember that Italian past, which leads the authors to go through parental experiences -mainly, those linked to the world wars survival and the immigration process itself- and to outline a kind of family archive that allowed them to reconfigure their own identity.Fil: Buret, María Florencia. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Instituto de Investigaciones en Humanidades y Ciencias Sociales (UNLP-CONICET); Argentina
Around the nostos's experience the returns of Antonio Dal Masetto and Martina Gusberti to the homeland
No full textLa tierra incomparable (1994) de Antonio Dal Masetto y El laúd y la guerra (1995) de Martina Gusberti son novelas de autores ítalo-argentinos en las que se narra la experiencia del regreso a la tierra natal. En ambas ficciones, el relato del ??Õþ?? ("retorno") conduce a los escritores a realizar un proceso de reconstrucción de la biografía de sus progenitores. Debido a que cada autor, para componer sus obras, afrontó de un modo particular este tránsito ineludible por la experiencia parental, nuestro objetivo será identificar los diferentes modos de presentación de esos recuerdos en las novelas, intentando explicar, al mismo tiempo, el carácter insoslayable de esa "diamnesia" (es decir, de ese tránsito a través de la memoria del otro). La hipótesis que nos orienta afirma la existencia de una compleja relación entre el escritor, el terruño ?perdido? y la capacidad de recuerdo de ese pasado italiano, que conduce a los autores a transitar las experiencias parentales - principalmente, las vinculadas a la sobrevivencia de las guerras mundiales y al proceso inmigratorio en sí mismo? y a delinear una suerte de archivo familiar que les permitirá reconfigurar su propia identidad.La tierra incomparable (1994) by Antonio Dal Masetto and El laúd y la guerra (1995) by Martina Gusberti are novels written by Italian-Argentine authors in which the experience of returning to their native land is recounted. In both fictions, the writing of the ??Õþ?? ("return") leads the writers to carry out a process of reconstruction of the biography of their parents. Because each author faced this unavoidable transit through parental experience in a particular way, our objective will be to identify the different modes of presentation of these memories in the novels, trying to explain, at the same time, the unavoidable character of that "diamnesia" (es that is, that transit through the memory of the other). The hypothesis that guides us states the existence of a complex relationship between the writer, the "lost" homeland and the ability to remember that Italian past, which leads the authors to go through parental experiences -mainly, those linked to the world wars survival and the immigration process itself- and to outline a kind of family archive that allowed them to reconfigure their own identity.Fil: Buret, María Florencia. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Instituto de Investigaciones en Humanidades y Ciencias Sociales (UNLP-CONICET); Argentina
TREM-1 promotes intestinal tumorigenesis.
No full textTriggering receptor expressed on myeloid cells-1 (TREM-1) is a potent amplifier of pro-inflammatory innate immune responses. Increasing evidence suggests a role for TREM-1 not only in acute pathogen-induced reactions but also in chronic and non-infectious inflammatory disorders, including various types of cancer. Here, we demonstrate that genetic deficiency in Trem1 protects from colorectal cancer. In particular, Trem1 (-/-) mice exhibited reduced tumor numbers and load in an experimental model of inflammation-driven tumorigenesis. Gene expression analysis of Trem1 (-/-) versus Trem1 (+/+) tumor tissue demonstrated distinct immune signatures. Whereas Trem1 (-/-) tumors showed an increased abundance of transcripts linked to adaptive immunity, Trem1 (+/+) tumors were characterized by overexpression of innate pro-inflammatory genes associated with tumorigenesis. Compared to adjacent tumor-free colonic mucosa, expression of Trem1 was increased in murine and human colorectal tumors. Unexpectedly, TREM-1 was not detected on tumor-associated Ly6C(-) MHC class II(+) macrophages. In contrast, TREM-1 was highly expressed by tumor-infiltrating neutrophils which represented the predominant myeloid population in Trem1 (+/+) but not in Trem1 (-/-) tumors. Collectively, our findings demonstrate a clear role of TREM-1 for intestinal tumorigenesis and indicate TREM-1-expressing neutrophils as critical players in colorectal tumor development
Clean and efficient dual-fuel combustion using OMEx as high reactivity fuel: comparison to diesel-gasoline calibration
No full text[EN] From previous results in a single-cylinder engine platform, it can be concluded that the dual-mode dual-fuel (DMDF) concept can be a potential solution to overcome the major constraints found with other single-fuel low temperature combustion modes. To extend these findings to a real application, this work evaluates the potential of the diesel-gasoline DMDF concept on a multi-cylinder 8L engine in terms of performance and emissions. To do this, a full engine calibration map was obtained following a specific methodology. The emissions results show that diesel-gasoline DMDF allows to achieve EURO VI NOx and soot emissions in a great portion of the engine map. Nonetheless, the levels of these pollutant at high load conditions exceed the EURO VI limits by far due to the need of implementing a diffusive combustion strategy with high EGR levels to avoid excessive in-cylinder pressure gradients. To mitigate this issue, the use of Oxymethylene ether (OMEx) instead of diesel fuel is proposed. A dedicated engine calibration was developed for the OMEx-gasoline DMDF concept following the same methodology. The results show that the oxygen content in the OMEx molecule allows to achieve a fully EUVI compliant engine calibration in terms of NOx with engine-out soot levels lower than 0.01 g/kWh. Moreover, due to the lower stoichiometric air-fuel ratio with this fuel, the air management system requirements are lower, reducing the pumping losses and increasing the brake thermal efficiency in most of the calibration map.The authors thanks ARAMCO Overseas Company and VOLVO Group Trucks Technology for supporting this research. The authors acknowledge FEDER and Spanish Ministerio de Economia y Competitividad for partially supporting this research through TRANCO project (TRA201787694-R). The authors also acknowledge the Universitat Politecnica de Valencia for partially supporting this research through Convocatoria de ayudas a Primeros Proyectos de Investigacion (SP20180148). The author R. Sari acknowledges the financial support from the Spanish ministry of science innovation and universities under the grant "Ayudas para contratos predoctorales para la formacion de doctores"(PRE2018085043).Benajes, J.; García Martínez, A.; Monsalve-Serrano, J.; Lago-Sari, R. (2020). Clean and efficient dual-fuel combustion using OMEx as high reactivity fuel: comparison to diesel-gasoline calibration. Energy Conversion and Management. 216:1-16. https://doi.org/10.1016/j.enconman.2020.112953S116216Edenhofer O, Pichs-Madruga R, Sokona Y, Farahani E, Kadner S, Seyboth K, et al. IPCC, 2014: Summary for Policymakers. In: Climate Change 2014: Mitigation of Climate Change. Contribution of Working Group III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA.European environment agency. GHG emissions by sector in the EU-28, 1990-2016. Available at .European parliament. CO2 emissions from cars: facts and figures (infographics). Available at .United States Environmental Protection Agency- EPA. Smog, Soot, and Other Air Pollution from Transportation. Available at:.European environment agency. Emissions of air pollutants from transport. Available at.Official Journal of the European Union. Regulation (EC) No 595/2009 of the European Parliament and of the Council of 18 June 2009 on type-approval of motor vehicles and engines with respect to emissions from heavy duty vehicles (Euro VI) and on access to vehicle repair and maintenance information and amending Regulation (EC) No 715/2007 and Directive 2007/46/EC and repealing Directives 80/1269/EEC, 2005/55/EC and 2005/78/EC, OJ L 188, 18.7.2009, p. 1–13.García, A., Piqueras, P., Monsalve-Serrano, J., & Lago Sari, R. (2018). Sizing a conventional diesel oxidation catalyst to be used for RCCI combustion under real driving conditions. Applied Thermal Engineering, 140, 62-72. doi:10.1016/j.applthermaleng.2018.05.043Benajes, J., García, A., Monsalve-Serrano, J., & Lago Sari, R. (2018). Experimental investigation on the efficiency of a diesel oxidation catalyst in a medium-duty multi-cylinder RCCI engine. Energy Conversion and Management, 176, 1-10. doi:10.1016/j.enconman.2018.09.016Russell, A., & Epling, W. S. (2011). Diesel Oxidation Catalysts. Catalysis Reviews, 53(4), 337-423. doi:10.1080/01614940.2011.596429Piqueras, P., García, A., Monsalve-Serrano, J., & Ruiz, M. J. (2019). Performance of a diesel oxidation catalyst under diesel-gasoline reactivity controlled compression ignition combustion conditions. Energy Conversion and Management, 196, 18-31. doi:10.1016/j.enconman.2019.05.111Serrano JR, Bermudez V, Piqueras P, Angiolini E. Application of Pre-DPF Water Injection Technique for Pressure Drop Limitation. SAE Technical Paper 2015-01-0985. DOI:10.4271/2015-01-0985.Ettireddy PR, Kotrba A, Spinks T, Boningari T, Smirniotis P. Development of Low Temperature Selective Catalytic Reduction (SCR) Catalysts for Future Emissions Regulations. SAE Technical Paper 2014-01-1520. DOI:10.4271/2014-01-1520.Dallmann T., Posada F., Bandivadekar A. Costs of Emission Reduction Technologies for Diesel Engines Used in Non-Road Vehicles and Equipment. ICCT, Working paper 2018-10, July 2018.Nishiyama H, Tanaka Y, Adachi T, Kawamura S, Daisho Y, Suzuki H, Yamaguchi K. A Study on the Improvement of NOx Reduction Efficiency for a Urea SCR System. SAE Technical Papers) 2015-09-0. DOI:10.4271/2015-01-2014.Singh N, Rutland C, Foster D, Narayanaswamy K, He Y. Investigation into Different DPF Regeneration Strategies Based on Fuel Economy Using Integrated System Simulation. SAE Technical Paper 2009-01-1275. DOI:10.4271/2009-01-1275.Official Journal of the European Union. REGULATION (EU) 2019/1242 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 20 June 2019 setting CO2 emission performance standards for new heavy-duty vehicles and amending Regulations (EC) No 595/2009 and (EU) 2018/956 of the European Parliament and of the Council and Council Directive 96/53/EC.García Valladolid, P., Tunestål, P., Monsalve-Serrano, J., García, A., & Hyvönen, J. (2017). Impact of diesel pilot distribution on the ignition process of a dual fuel medium speed marine engine. Energy Conversion and Management, 149, 192-205. doi:10.1016/j.enconman.2017.07.023Zheng, M., Asad, U., Reader, G. T., Tan, Y., & Wang, M. (2009). Energy efficiency improvement strategies for a diesel engine in low-temperature combustion. International Journal of Energy Research, 33(1), 8-28. doi:10.1002/er.1464Olmeda, P., García, A., Monsalve-Serrano, J., & Lago Sari, R. (2018). Experimental investigation on RCCI heat transfer in a light-duty diesel engine with different fuels: Comparison versus conventional diesel combustion. Applied Thermal Engineering, 144, 424-436. doi:10.1016/j.applthermaleng.2018.08.082Martins M, Fischer I, Gusberti F, Sari R. et al., “HCCI of Wet Ethanol on a Dedicated Cylinder of a Diesel Engine,” SAE Technical Paper 2017-01-0733, 2017, DOI:10.4271/2017-01-0733.Yousefi, A., Gharehghani, A., & Birouk, M. (2015). Comparison study on combustion characteristics and emissions of a homogeneous charge compression ignition (HCCI) engine with and without pre-combustion chamber. Energy Conversion and Management, 100, 232-241. doi:10.1016/j.enconman.2015.05.024López, J. J., García-Oliver, J. M., García, A., & Domenech, V. (2014). Gasoline effects on spray characteristics, mixing and auto-ignition processes in a CI engine under Partially Premixed Combustion conditions. Applied Thermal Engineering, 70(1), 996-1006. doi:10.1016/j.applthermaleng.2014.06.027Yang, J., Ji, C., Wang, S., Wang, D., Shi, C., Ma, Z., & Zhang, B. (2018). Numerical study of hydrogen direct injection strategy on mixture formation and combustion process in a partially premixed gasoline Wankel rotary engine. Energy Conversion and Management, 176, 184-193. doi:10.1016/j.enconman.2018.09.008Benajes, J., García, A., Monsalve-Serrano, J., & Lago Sari, R. (2018). Fuel consumption and engine-out emissions estimations of a light-duty engine running in dual-mode RCCI/CDC with different fuels and driving cycles. Energy, 157, 19-30. doi:10.1016/j.energy.2018.05.144Reitz, R. D., & Duraisamy, G. (2015). Review of high efficiency and clean reactivity controlled compression ignition (RCCI) combustion in internal combustion engines. Progress in Energy and Combustion Science, 46, 12-71. doi:10.1016/j.pecs.2014.05.003Park, H., Shim, E., & Bae, C. (2019). Expansion of low-load operating range by mixture stratification in a natural gas-diesel dual-fuel premixed charge compression ignition engine. Energy Conversion and Management, 194, 186-198. doi:10.1016/j.enconman.2019.04.085Inagaki K, Fuyuto T, Nishikawa K, Nakakita K, Sakata I. Dual-Fuel PCI Combustion Controlled by In-Cylinder Stratification of Ignitability. SAE Technical Paper 2006-01-0028, 2006.Kokjohn S L, Hanson R M, Splitter D A, Reitz R D. Fuel reactivity controlled compression ignition (RCCI): a pathway to controlled high-efficiency clean combustion, International Journal of Engine Research, 2011. Volume 12, June 2011, Pages 209-226.Benajes, J., García, A., Monsalve-Serrano, J., & Villalta, D. (2018). Benefits of E85 versus gasoline as low reactivity fuel for an automotive diesel engine operating in reactivity controlled compression ignition combustion mode. Energy Conversion and Management, 159, 85-95. doi:10.1016/j.enconman.2018.01.015Molina, S., García, A., Monsalve-Serrano, J., & Estepa, D. (2018). Miller cycle for improved efficiency, load range and emissions in a heavy-duty engine running under reactivity controlled compression ignition combustion. Applied Thermal Engineering, 136, 161-168. doi:10.1016/j.applthermaleng.2018.02.106Benajes, J., García, A., Monsalve-Serrano, J., & Boronat, V. (2017). Achieving clean and efficient engine operation up to full load by combining optimized RCCI and dual-fuel diesel-gasoline combustion strategies. Energy Conversion and Management, 136, 142-151. doi:10.1016/j.enconman.2017.01.010Benajes, J., García, A., Monsalve-Serrano, J., Balloul, I., & Pradel, G. (2016). An assessment of the dual-mode reactivity controlled compression ignition/conventional diesel combustion capabilities in a EURO VI medium-duty diesel engine fueled with an intermediate ethanol-gasoline blend and biodiesel. Energy Conversion and Management, 123, 381-391. doi:10.1016/j.enconman.2016.06.059García, A., Monsalve-Serrano, J., Villalta, D., & Sari, R. (2019). Fuel sensitivity effects on dual-mode dual-fuel combustion operation for different octane numbers. Energy Conversion and Management, 201, 112137. doi:10.1016/j.enconman.2019.112137García, A., Monsalve-Serrano, J., Villalta, D., & Sari, R. (2019). Octane number influence on combustion and performance parameters in a Dual-Mode Dual-Fuel engine. Fuel, 258, 116140. doi:10.1016/j.fuel.2019.116140García, A., Monsalve-Serrano, J., Villalta, D., Lago Sari, R., Gordillo Zavaleta, V., & Gaillard, P. (2019). Potential of e-Fischer Tropsch diesel and oxymethyl-ether (OMEx) as fuels for the dual-mode dual-fuel concept. Applied Energy, 253, 113622. doi:10.1016/j.apenergy.2019.113622García, A., Monsalve-Serrano, J., Rückert Roso, V., & Santos Martins, M. E. (2017). Evaluating the emissions and performance of two dual-mode RCCI combustion strategies under the World Harmonized Vehicle Cycle (WHVC). Energy Conversion and Management, 149, 263-274. doi:10.1016/j.enconman.2017.07.034Burre, J., Bongartz, D., & Mitsos, A. (2019). Production of Oxymethylene Dimethyl Ethers from Hydrogen and Carbon Dioxide—Part II: Modeling and Analysis for OME3–5. Industrial & Engineering Chemistry Research, 58(14), 5567-5578. doi:10.1021/acs.iecr.8b05577Omari A, Heuser B, Pischinger S. Potential of oxymethylenether-diesel blends for ultra-low emission engines, Fuel, Volume 209, 2017, pages 232-237, ISSN 0016-2361, DOI:10.1016/j.fuel.2017.07.107.Deutz, S., Bongartz, D., Heuser, B., Kätelhön, A., Schulze Langenhorst, L., Omari, A., … Bardow, A. (2018). Cleaner production of cleaner fuels: wind-to-wheel – environmental assessment of CO2-based oxymethylene ether as a drop-in fuel. Energy & Environmental Science, 11(2), 331-343. doi:10.1039/c7ee01657cBurre J, Bongartz D, Mitsos, A. Production of Oxymethylene Dimethyl Ethers from Hydrogen and Carbon Dioxide—Part II: Modeling and Analysis for OME3–5 Industrial & Engineering Chemistry Research, March 2019, 58, 5567–5578, DOI: 10.1021/acs.iecr.8b05577.Held M, TÖnges Y, Pélerin D, Hartl M, Wachtmeister G, Burger J. On the energetic efficiency of producing polyoxymethylene dimethyl ethers from CO2 using electrical energy. Energy and environmental Science, January 2019, pages 1019–1034.Benajes, J., García, A., Pastor, J. M., & Monsalve-Serrano, J. (2016). Effects of piston bowl geometry on Reactivity Controlled Compression Ignition heat transfer and combustion losses at different engine loads. Energy, 98, 64-77. doi:10.1016/j.energy.2016.01.014AVL manufacturer manual. Smoke value measurement with the filter-papermethod. Application notes. June 2005 AT1007E, Rev. 02. Web:.Macian V, Payri R, Garcia A, Bardi M. Experimental Evaluation of the Best Approach for Diesel Spray Images Segmentation. Experimental Techniques, Volume36, December 2012, Pages 26-34.Benajes J, García A, Monsalve-Serrano J, Sari R. Potential of RCCI series hybrid vehicle architecture to meet the future CO2 targets with low engine-out emissions. Applied Sciences (Switzerland), 8(9), 2018, 1472.Damodharana D, Sathiyagnanamb AP, Ranac Kumard DB, Saravanand S. Combined influence of injection timing and EGR on combustion, performance and emissions of DI diesel engine fueled with neat waste plastic oil. Energy Conversion and Management, 8(9), 2018, 1472
Assessment of a complete truck operating under dual-mode dual-fuel combustion in real life applications: Performance and emissions analysis
No full text[EN] The dual-mode dual-fuel (DMDF) strategy has been demonstrated to be a potential combustion mode to cover all the engine map with low-to-moderate NOx and soot emissions and high efficiency simultaneously. This can be accomplished by modifying the injection strategy to promote a fully premixed or a dual-fuel diffusive combustion depending on the operating conditions. The main limitation of the DMDF are the high concentrations of unburned hydrocarbons and carbon monoxide coupled with low exhaust temperatures, which can be a challenge for the stock diesel oxidation catalyst (DOC). Moreover, the use of a diffusive combustion combined with high EGR rates to avoid mechanical issues at high load enhances the soot formation, which can compromise the final soot levels in a homologation cycle. To evaluate these aspects, this work studies the performance and emissions of a DMDF truck concept along a WHVC and different in-service conformity cycles through vehicle systems simulations. For both types of cycles, five payloads were tested (0%, 25%, 50%, 75% and 100%) to evaluate the impact of this parameter on the operating points distribution inside the DMDF map. The first results show that the DMDF concept provides engine-out NOx levels below the EUVI regulation at normative payload (50%) with similar fuel consumption than the conventional diesel truck. On the other hand, the engine-out HC and CO emissions exceed their respective limits in all the cases, while the engine-out soot emissions only reach the EUVI levels up to 25% payload. By this reason, the stock DOC and diesel particulate filter from the conventional diesel truck were modelled and fitted to the DMDF truck model. The results evidenced that the use of these two ATS allows to achieve the EUVI limits in terms of tailpipe HC, CO and soot independently on the cycle and payload analyzed. Moreover, considering the tailpipe emissions values achieved with ATS at 50% payload, it can be inferred that both devices could be downsized for the DMDF application as compared to the conventional ATS for diesel applications.The authors thanks ARAMCO Overseas Company and VOLVO Group Trucks Technology for supporting this research. The authors acknowledge European Regional Development Fund (FEDER) and Spanish Ministerio de Economia y Competitividad for partially supporting this research through TRANCO project (TRA2017-87694-R). The authors also acknowledge the Universitat Polit`ecnica de Val`encia for partially supporting this research through Convocatoria de ayudas a Primeros Proyectos de Investigacion (SP20180148). The author R. Sari acknowledges the financial support from the Spanish ministry of science innovation and universities under the grant ``Ayudas para contratos predoctorales para la formaci ' on de doctores"(PRE2018-085043).García Martínez, A.; Monsalve-Serrano, J.; Lago-Sari, R.; Gaillard, P. (2020). Assessment of a complete truck operating under dual-mode dual-fuel combustion in real life applications: Performance and emissions analysis. Applied Energy. 279:1-21. https://doi.org/10.1016/j.apenergy.2020.115729S121279COMMISSION REGULATION (EU) No 136/2014. Amending Directive 2007/46/EC of the European Parliament and of the Council, Commission Regulation (EC) No 692/2008 as regards emissions from light passenger and commercial vehicles (Euro 5 and Euro 6) and Commission Regulation (EU) No 582/2011 as regards emissions from heavy duty vehicles (Euro VI); 11 February 2014.Amba Prasad Rao, G., & Kaleemuddin, S. (2011). Development of variable timing fuel injection cam for effective abatement of diesel engine emissions. Applied Energy, 88(8), 2653-2662. doi:10.1016/j.apenergy.2011.02.011Agarwal AK, Dhar A, Gupta JG, Kim W, Lee C, Park S. Effect of fuel injection pressure and injection timing on spray characteristics and particulate size–number distribution in a biodiesel fuelled common rail direct injection diesel engine. Appl Energy, vol. 130, 2014, Pages 212-221, ISSN 0306-2619.Prasad, B. V. V. S. U., Sharma, C. S., Anand, T. N. C., & Ravikrishna, R. V. (2011). High swirl-inducing piston bowls in small diesel engines for emission reduction. Applied Energy, 88(7), 2355-2367. doi:10.1016/j.apenergy.2010.12.068Russell, A., & Epling, W. S. (2011). Diesel Oxidation Catalysts. Catalysis Reviews, 53(4), 337-423. doi:10.1080/01614940.2011.596429Serrano JR, Bermudez V, Piqueras P, Angiolini E. Application of Pre-DPF water injection technique for pressure drop limitation. SAE Technical Paper 2015-01-0985. https://doi.org/10.4271/2015-01-0985.Ettireddy PR, Kotrba A, Spinks T, Boningari T, Smirniotis P. Development of low temperature selective catalytic reduction (SCR) catalysts for future emissions regulations. SAE Technical Paper 2014-01-1520. https://doi.org/10.4271/2014-01-1520.Henry C, Currier N, Ottinger N, Yezerets A. Decoupling the interactions of hydrocarbons and oxides of nitrogen over diesel oxidation catalysts. SAE Technical Paper 2011-01-1137. doi:10.4271/2011-01-1137.Zhang J, Wong VW, Shuai S, Chen Y, Sappok A. Quantitative estimation of the impact of ash accumulation on diesel particulate filter related fuel penalty for a typical modern on-road heavy-duty diesel engine. Appl Energy 2018;229: 1010–1023, ISSN 0306-2619.Payri F, Arnau FJ, Piqueras P, Ruiz M.J. Lumped approach for flow-through and wall-flow monolithic reactors modelling for real-time automotive applications. SAE Technical Paper 2018-01-0954; 2018, doi:10.4271/2018-01-0954.Liang Z, Ma X, Lin H, Tang Y. The energy consumption and environmental impacts of SCR technology in China. Appl Energy 2011;88(4): 1120–1129, ISSN 0306-2619.Pastor, J. V., García, A., Micó, C., & Lewiski, F. (2020). An optical investigation of Fischer-Tropsch diesel and Oxymethylene dimethyl ether impact on combustion process for CI engines. Applied Energy, 260, 114238. doi:10.1016/j.apenergy.2019.114238Pan, J., Wei, H., Shu, G., Chen, Z., & Zhao, P. (2016). The role of low temperature chemistry in combustion mode development under elevated pressures. Combustion and Flame, 174, 179-193. doi:10.1016/j.combustflame.2016.09.012Lawler B, Splitter D, Szybist J, Kaul B. Thermally Stratified Compression Ignition: A new advanced low temperature combustion mode with load flexibility. Appl Energy 2017;189: 122–132, ISSN 0306-2619.Pachiannan T, Zhong W, Rajkumar S, He Z, Leng X, Wang Q. A literature review of fuel effects on performance and emission characteristics of low-temperature combustion strategies. Appl Energy 2019;251: 113380, ISSN 0306-2619.Krishnamoorthi, M., Malayalamurthi, R., He, Z., & Kandasamy, S. (2019). A review on low temperature combustion engines: Performance, combustion and emission characteristics. Renewable and Sustainable Energy Reviews, 116, 109404. doi:10.1016/j.rser.2019.109404Javier López J, García-Oliver JM, García A, Domenech V. Gasoline effects on spray characteristics, mixing and auto-ignition processes in a CI engine under Partially Premixed Combustion conditions. Appl Therm Eng 2014;70(1): 996–1006, ISSN 1359-4311.Komninos NP, Rakopoulos CD. Heat transfer in hcci phenomenological simulation models: a review. Appl Energy 2016; 181: 179–209, ISSN 0306-2619.Yousefi, A., Gharehghani, A., & Birouk, M. (2015). Comparison study on combustion characteristics and emissions of a homogeneous charge compression ignition (HCCI) engine with and without pre-combustion chamber. Energy Conversion and Management, 100, 232-241. doi:10.1016/j.enconman.2015.05.024Martins, M., Fischer, I., Gusberti, F., Sari, R., & Nora, M. D. (2017). HCCI of Wet Ethanol on a Dedicated Cylinder of a Diesel Engine. SAE Technical Paper Series. doi:10.4271/2017-01-0733Hunicz, J., Mikulski, M., Geca, M. S., & Rybak, A. (2020). An applicable approach to mitigate pressure rise rate in an HCCI engine with negative valve overlap. Applied Energy, 257, 114018. doi:10.1016/j.apenergy.2019.114018Kokjohn SL, Hanson RM, Splitter DA, Reitz RD. Fuel reactivity controlled compression ignition (RCCI): a pathway to controlled high-efficiency clean combustion. Int J Engine Res 2011;12: 209-226.Benajes J, Molina S, García A, Monsalve-Serrano J. Effects of direct injection timing and blending ratio on RCCI combustion with different low reactivity fuels. Energy Convers Manage 2015;99: 193-209, ISSN 0196-8904.Benajes J, García A., Monsalve-Serrano J, Sari R. Fuel consumption and engine-out emissions estimations of a light-duty engine running in dual-mode RCCI/CDC with different fuels and driving cycles. Energy 2018;157: 19–30.Olmeda P, García A, Monsalve-Serrano J, Sari R. Experimental investigation on RCCI heat transfer in a light-duty diesel engine with different fuels: Comparison versus conventional diesel combustion. Appl Therm Eng 2018;144: 424-36, ISSN 1359-4311.Reitz, R. D., & Duraisamy, G. (2015). Review of high efficiency and clean reactivity controlled compression ignition (RCCI) combustion in internal combustion engines. Progress in Energy and Combustion Science, 46, 12-71. doi:10.1016/j.pecs.2014.05.003Benajes, J., García, A., Monsalve-Serrano, J., & Villalta, D. (2018). Benefits of E85 versus gasoline as low reactivity fuel for an automotive diesel engine operating in reactivity controlled compression ignition combustion mode. Energy Conversion and Management, 159, 85-95. doi:10.1016/j.enconman.2018.01.015Benajes, J., García, A., Monsalve-Serrano, J., & Villalta, D. (2018). Exploring the limits of the reactivity controlled compression ignition combustion concept in a light-duty diesel engine and the influence of the direct-injected fuel properties. Energy Conversion and Management, 157, 277-287. doi:10.1016/j.enconman.2017.12.028García, A., Monsalve-Serrano, J., Rückert Roso, V., & Santos Martins, M. E. (2017). Evaluating the emissions and performance of two dual-mode RCCI combustion strategies under the World Harmonized Vehicle Cycle (WHVC). Energy Conversion and Management, 149, 263-274. doi:10.1016/j.enconman.2017.07.034Benajes, J., García, A., Monsalve-Serrano, J., & Boronat, V. (2017). Achieving clean and efficient engine operation up to full load by combining optimized RCCI and dual-fuel diesel-gasoline combustion strategies. Energy Conversion and Management, 136, 142-151. doi:10.1016/j.enconman.2017.01.010Benajes, J., García, A., Monsalve-Serrano, J., & Boronat, V. (2016). Dual-Fuel Combustion for Future Clean and Efficient Compression Ignition Engines. Applied Sciences, 7(1), 36. doi:10.3390/app7010036Benajes, J., García, A., Monsalve-Serrano, J., & Sari, R. (2020). Clean and efficient dual-fuel combustion using OMEx as high reactivity fuel: Comparison to diesel-gasoline calibration. Energy Conversion and Management, 216, 112953. doi:10.1016/j.enconman.2020.112953García, A., Monsalve-Serrano, J., Villalta, D., & Sari, R. (2019). Fuel sensitivity effects on dual-mode dual-fuel combustion operation for different octane numbers. Energy Conversion and Management, 201, 112137. doi:10.1016/j.enconman.2019.112137García, A., Monsalve-Serrano, J., Villalta, D., & Sari, R. (2019). Octane number influence on combustion and performance parameters in a Dual-Mode Dual-Fuel engine. Fuel, 258, 116140. doi:10.1016/j.fuel.2019.116140García, A., Monsalve-Serrano, J., Villalta, D., Lago Sari, R., Gordillo Zavaleta, V., & Gaillard, P. (2019). Potential of e-Fischer Tropsch diesel and oxymethyl-ether (OMEx) as fuels for the dual-mode dual-fuel concept. Applied Energy, 253, 113622. doi:10.1016/j.apenergy.2019.113622Gong C, Yi L, Zhang Z, Sun J, Liu F. Assessment of ultra-lean burn characteristics for a stratified-charge direct-injection spark-ignition methanol engine under different high compression ratios. Appl Energy 2020; 261:114478, ISSN 0306-2619.Gong C, Zhang Z, Sun J, Chen Y, Liu F. Computational study of nozzle spray-line distribution effects on stratified mixture formation, combustion and emissions of a high compression ratio DISI methanol engine under lean-burn condition. Energy 2020;205: 118080, ISSN 0360-5442.Gong C, Sun J, Liu F. Numerical study of twin-spark plug arrangement effects on flame, combustion and emissions of a medium compression ratio direct-injection methanol engine. Fuel 2020;279: 118427, ISSN 0016-2361.Benajes, J., García, A., Monsalve-Serrano, J., & Lago Sari, R. (2018). Experimental investigation on the efficiency of a diesel oxidation catalyst in a medium-duty multi-cylinder RCCI engine. Energy Conversion and Management, 176, 1-10. doi:10.1016/j.enconman.2018.09.016García A, Monsalve-Serrano J, Villalta D, Sari R. Performance of a conventional diesel aftertreatment system used in a medium-duty multi-cylinder dual-mode dual-fuel engine. Energy Convers Manage 2019;184: 327-37, ISSN 0196-8904.Gong C, Lib Z, Yi L, Liu F. Comparative study on combustion and emissions between methanol portinjection engine and methanol direct-injection engine with H2-enriched port-injection under lean-burn conditions. Energy Convers Manage 2019;200, ISSN 0196-8904.Gong C, Li Z, Yi L, Liu F. Experimental investigation of equivalence ratio effects on combustion and emissions characteristics of an H2/methanol dual-injection engine under different spark timings. Fuel 2020;262: 116463,ISSN 0016-2361.Gong C, Li Z, Yi L, Huang K, Liu F. Research on the performance of a hydrogen/methanol dual-injection assisted spark-ignition engine using late-injection strategy for methanol. Fuel 2020; 260: 116403, ISSN 0016-2361.Park Y, Bae C. Experimental study on the effects of high/low pressure EGR proportion in a passenger car diesel engine. Appl Energy 2014;133: 308–16, ISSN 0306-2619.Benajes, J., García, A., Pastor, J. M., & Monsalve-Serrano, J. (2016). Effects of piston bowl geometry on Reactivity Controlled Compression Ignition heat transfer and combustion losses at different engine loads. Energy, 98, 64-77. doi:10.1016/j.energy.2016.01.014AVL manufacturer manual. Smoke value measurement with the filter-papermethod. Application notes. June 2005 AT1007E, Rev. 02. Web:.García A, Gil A, Monsalve-Serrano J, Sari R. OMEx-diesel blends as high reactivity fuel for ultra-low NOx and soot emissions in the dual-mode dual-fuel combustion strategy. Fuel 2020;275: 117898, ISSN 0016-2361.Benajes, J., Pastor, J. V., García, A., & Monsalve-Serrano, J. (2015). The potential of RCCI concept to meet EURO VI NOx limitation and ultra-low soot emissions in a heavy-duty engine over the whole engine map. Fuel, 159, 952-961. doi:10.1016/j.fuel.2015.07.064Turns S. An introduction to combustion: concepts and applications. McGraw-Hill Series in Mechanical Engineering, second edition; 2000.Volvo trucks: Volvo FE: Available at.Gamma Technologies: Vehicle Driveline and HEV Application Manual; 2018.Luján J, García A, Monsalve-Serrano J, Martínez-Boggio S. Effectiveness of hybrid powertrains to reduce the fuel consumption and NOx emissions of a Euro 6d-temp diesel engine under real-life driving conditions. Energy Convers Manage 2019;199: 111987, ISSN 0196-8904.COMMISSION REGULATION (EU) No 582/2011.Implementing and amending Regulation (EC) No 595/2009 of the European Parliament and of the Council with respect to emissions from heavy duty vehicles (Euro VI) and amending Annexes I and III to Directive 2007/46/EC of the European Parliament and of the Council; 25 May 2011.Sampara, C. S., Bissett, E. J., & Chmielewski, M. (2007). Global Kinetics for a Commercial Diesel Oxidation Catalyst with Two Exhaust Hydrocarbons. Industrial & Engineering Chemistry Research, 47(2), 311-322. doi:10.1021/ie070813xSampara, C. S., Bissett, E. J., Chmielewski, M., & Assanis, D. (2007). Global Kinetics for Platinum Diesel Oxidation Catalysts. Industrial & Engineering Chemistry Research, 46(24), 7993-8003. doi:10.1021/ie070642wSilvis W. An Algorithm for Calculating the Air/Fuel Ratio from Exhaust Emissions. SAE Technical Paper 970514; 1997.Gamma Technologies: Optimization Manual; 2018.Wang Q, Wang B, Yao C, Liu M, Wu T, Wei H, Dou Z. Study on cyclic variability of dual fuel combustion in a methanol fumigated diesel engine. Fuel 2016;164: 99–109, ISSN 0016-236.Macián V, Serrano JR, Piqueras P, Sanchis J. Internal pore diffusion and adsorption impact on the soot oxidation in wall-flow particulate filters. Energy 2019;179: 407-421, ISSN 0360-5442.Payri, F., Arnau, F. J., Piqueras, P., & Ruiz, M. J. (2018). Lumped Approach for Flow-Through and Wall-Flow Monolithic Reactors Modelling for Real-Time Automotive Applications. SAE Technical Paper Series. doi:10.4271/2018-01-0954Pedrozo, V. B., May, I., Lanzanova, T. D. M., & Zhao, H. (2016). Potential of internal EGR and throttled operation for low load extension of ethanol–diesel dual-fuel reactivity controlled compression ignition combustion on a heavy-duty engine. Fuel, 179, 391-405. doi:10.1016/j.fuel.2016.03.090Heywood JB. Internal combustion engine fundamentals. McGraw-Hill, 2018, Second edition.Gao, J., Tian, G., Sorniotti, A., Karci, A. E., & Di Palo, R. (2019). Review of thermal management of catalytic converters to decrease engine emissions during cold start and warm up. Applied Thermal Engineering, 147, 177-187. doi:10.1016/j.applthermaleng.2018.10.037Yang, S., Deng, C., Gao, Y., & He, Y. (2016). Diesel particulate filter design simulation: A review. Advances in Mechanical Engineering, 8(3), 168781401663732. doi:10.1177/1687814016637328Serrano J, Climent H, Piqueras P, Angiolini E. Filtration modelling in wall-flow particulate filters of low soot penetration thickness. Energy 2016;112: 883-898, ISSN 0360-5442.Payri F, Broatch A, Serrano JR, Piqueras P. Experimental–theoretical methodology for determination of inertial pressure drop distribution and pore structure properties in wall-flow diesel particulate filters (DPFs). Energy 2011;36(12): 6731-6744, ISSN 0360-5442.Bermúdez, V., Serrano, J., Piqueras, P., & Sanchis, E. (2017). On the Impact of Particulate Matter Distribution on Pressure Drop of Wall-Flow Particulate Filters. Applied Sciences, 7(3), 234. doi:10.3390/app7030234Rößler, M., Velji, A., Janzer, C., Koch, T., & Olzmann, M. (2017). Formation of Engine Internal NO2: Measures to Control the NO2/NOX Ratio for Enhanced Exhaust After Treatment. SAE International Journal of Engines, 10(4), 1880-1893. doi:10.4271/2017-01-1017Singh, N., Rutland, C. J., Foster, D. E., Narayanaswamy, K., & He, Y. (2009). Investigation into Different DPF Regeneration Strategies Based on Fuel Economy Using Integrated System Simulation. SAE Technical Paper Series. doi:10.4271/2009-01-127
