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Influence of aging of a diesel injector on multiple injection strategies

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Influence of aging of a diesel injector on multiple injection strategies

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dc.contributor.author Payri, Raul es_ES
dc.contributor.author Marti-Aldaravi, Pedro es_ES
dc.contributor.author Montiel-Prieto, Tomas es_ES
dc.contributor.author Viera, Alberto es_ES
dc.date.accessioned 2021-06-03T03:31:37Z
dc.date.available 2021-06-03T03:31:37Z
dc.date.issued 2020-11-25 es_ES
dc.identifier.issn 1359-4311 es_ES
dc.identifier.uri http://hdl.handle.net/10251/167196
dc.description.abstract [EN] Multiple injection strategies have contributed to the improvement of thermal processes in Internal Combustion Engines. On this matter, the correct performance of the injector is a critical factor in the implementation of these techniques, as changes in the behavior of the injector could affect the injection development, altering the combustion process and heat transformation efficiency. Thus, the present study analyzes the development of multiple injection events in a diesel injector aged due to partial obstruction of the holes of the nozzle. To this end, a multi-hole piezoelectric injector was employed, in which the aging of the injector is evaluated through momentum flux measurements for each hole. Afterwards, rate of injection tests with pilot and post injection strategies are performed, and the results are compared to the injection events made by the same injector before aging. The results provided by the momentum flux experiments confirmed the partial obstruction of two holes. Furthermore, rate of injection comparisons showed that the injector had a lower steady-state rate of injection after aging and required a longer time to end the injection. These phenomena affected the multiple injection events, as the extended time required to end the injection reduced the hydraulic dwell time between pilot/post injection and the main injection. Furthermore, for short dwell times, this phenomenon led to the unification of the main and post injection, resulting in a large single injection. Hence, not only an increase in fuel consumption would appear, but the thermal benefits of implementing the post injection would be lost. es_ES
dc.description.sponsorship This work has been partially funded by Spanish Ministerio de Ciencia, Innovacion y Universidades through project RTI2018-099706B-100. Tomas Montiel was supported by a research grant from Generalitat Valenciana and the European Union (Reference: ACIF/2018/122). es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof Applied Thermal Engineering es_ES
dc.rights Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) es_ES
dc.subject Aging es_ES
dc.subject Diesel injection es_ES
dc.subject Rate of injection es_ES
dc.subject Multiple injections es_ES
dc.subject.classification MAQUINAS Y MOTORES TERMICOS es_ES
dc.subject.classification INGENIERIA AEROESPACIAL es_ES
dc.title Influence of aging of a diesel injector on multiple injection strategies es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.applthermaleng.2020.115891 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-099706-B-I00/ES/ESTUDIO DE LA ATOMIZACION PRIMARIA MEDIANTE SIMULACIONES DNS Y TECNICAS OPTICAS DE MUY ALTA RESOLUCION/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/GVA//ACIF%2F2018%2F122/ es_ES
dc.rights.accessRights Embargado es_ES
dc.date.embargoEndDate 2022-08-20 es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Máquinas y Motores Térmicos - Departament de Màquines i Motors Tèrmics es_ES
dc.description.bibliographicCitation Payri, R.; Marti-Aldaravi, P.; Montiel-Prieto, T.; Viera, A. (2020). Influence of aging of a diesel injector on multiple injection strategies. Applied Thermal Engineering. 181:1-9. https://doi.org/10.1016/j.applthermaleng.2020.115891 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.applthermaleng.2020.115891 es_ES
dc.description.upvformatpinicio 1 es_ES
dc.description.upvformatpfin 9 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 181 es_ES
dc.relation.pasarela S\426028 es_ES
dc.contributor.funder Generalitat Valenciana es_ES
dc.contributor.funder Agencia Estatal de Investigación es_ES
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