Study of intake manifolds of an internal combustion engine: A new geometry based on experimental results and numerical simulations
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.tsep.2018.12.003 http://hdl.handle.net/11449/188499 |
Resumo: | During the intake period in internal combustion engines, it has been noted that the cylinder volume is not completely occupied due to the variation of specific volume and the pressure drop along the supply system. Consequently, the volumetric efficiency in the cylinder is lowered, negatively affecting the engine power output. In this paper, numerical and experimental studies were performed to investigate different geometries of intake manifolds of internal combustion engines, with the aim of improving its efficiency. The numerical solutions were obtained through a 1D commercial code (GT-Power®) which solves the one-dimensional equations of continuity, momentum and energy, using a finite volume scheme. An experimental set-up was built and mass flow rate and pressure measurements of the intake air were carried out. The set-up is composed by an internal combustion engine, driven by an electric motor, and the experiments were performed without fuel and combustion. Numerical and experimental results were compared and a good agreement was found, thus confirming that the commercial code used is capable of simulating the kind of phenomena studied. Based on the Helmholtz resonator effect theory, a new intake manifold geometry was proposed. Measurements showed the novel geometry to improve the volumetric efficiency of the engine by 6% at 3500 rpm, the more common speed for this kind of engine, consequently increasing the indicated power by 3.68 kW (4.93 hp). The observed increase is worthy of note, considering the inherent difficulty to improve the volumetric efficiency near its maximum value for this type of engine, occurring around 3000 rpm. |
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Repositório Institucional da UNESP |
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Study of intake manifolds of an internal combustion engine: A new geometry based on experimental results and numerical simulations1D numerical simulationIntake manifoldInternal combustion engineVolumetric efficiencyDuring the intake period in internal combustion engines, it has been noted that the cylinder volume is not completely occupied due to the variation of specific volume and the pressure drop along the supply system. Consequently, the volumetric efficiency in the cylinder is lowered, negatively affecting the engine power output. In this paper, numerical and experimental studies were performed to investigate different geometries of intake manifolds of internal combustion engines, with the aim of improving its efficiency. The numerical solutions were obtained through a 1D commercial code (GT-Power®) which solves the one-dimensional equations of continuity, momentum and energy, using a finite volume scheme. An experimental set-up was built and mass flow rate and pressure measurements of the intake air were carried out. The set-up is composed by an internal combustion engine, driven by an electric motor, and the experiments were performed without fuel and combustion. Numerical and experimental results were compared and a good agreement was found, thus confirming that the commercial code used is capable of simulating the kind of phenomena studied. Based on the Helmholtz resonator effect theory, a new intake manifold geometry was proposed. Measurements showed the novel geometry to improve the volumetric efficiency of the engine by 6% at 3500 rpm, the more common speed for this kind of engine, consequently increasing the indicated power by 3.68 kW (4.93 hp). The observed increase is worthy of note, considering the inherent difficulty to improve the volumetric efficiency near its maximum value for this type of engine, occurring around 3000 rpm.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Department of Thermal Science and Fluids – Federal University of São João del Rei, 170 Frei Orlando SquareMechanical Engineering Department – FEB – UNESP, 14-01 Eng. Luiz Edmundo C. Coube AvenueUniversidad de Castilla-La Mancha Escuela de Ingeniería Industrial, Edif. Sabatini, Av. Carlos III, s/nMechanical Engineering Department – FEB – UNESP, 14-01 Eng. Luiz Edmundo C. Coube AvenueCNPq: 141049/2006-5CNPq: 472064/2006-1Universidade Estadual Paulista (Unesp)Escuela de Ingeniería IndustrialSouza, Gustavo Rodrigues dePellegrini, Cláudio de CastroFerreira, Sérgio Lucas [UNESP]Soto Pau, FelipeArmas, Octavio2019-10-06T16:10:13Z2019-10-06T16:10:13Z2019-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article248-258http://dx.doi.org/10.1016/j.tsep.2018.12.003Thermal Science and Engineering Progress, v. 9, p. 248-258.2451-9049http://hdl.handle.net/11449/18849910.1016/j.tsep.2018.12.0032-s2.0-85058483300Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengThermal Science and Engineering Progressinfo:eu-repo/semantics/openAccess2024-06-28T13:54:38Zoai:repositorio.unesp.br:11449/188499Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:19:51.408595Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Study of intake manifolds of an internal combustion engine: A new geometry based on experimental results and numerical simulations |
title |
Study of intake manifolds of an internal combustion engine: A new geometry based on experimental results and numerical simulations |
spellingShingle |
Study of intake manifolds of an internal combustion engine: A new geometry based on experimental results and numerical simulations Souza, Gustavo Rodrigues de 1D numerical simulation Intake manifold Internal combustion engine Volumetric efficiency |
title_short |
Study of intake manifolds of an internal combustion engine: A new geometry based on experimental results and numerical simulations |
title_full |
Study of intake manifolds of an internal combustion engine: A new geometry based on experimental results and numerical simulations |
title_fullStr |
Study of intake manifolds of an internal combustion engine: A new geometry based on experimental results and numerical simulations |
title_full_unstemmed |
Study of intake manifolds of an internal combustion engine: A new geometry based on experimental results and numerical simulations |
title_sort |
Study of intake manifolds of an internal combustion engine: A new geometry based on experimental results and numerical simulations |
author |
Souza, Gustavo Rodrigues de |
author_facet |
Souza, Gustavo Rodrigues de Pellegrini, Cláudio de Castro Ferreira, Sérgio Lucas [UNESP] Soto Pau, Felipe Armas, Octavio |
author_role |
author |
author2 |
Pellegrini, Cláudio de Castro Ferreira, Sérgio Lucas [UNESP] Soto Pau, Felipe Armas, Octavio |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Escuela de Ingeniería Industrial |
dc.contributor.author.fl_str_mv |
Souza, Gustavo Rodrigues de Pellegrini, Cláudio de Castro Ferreira, Sérgio Lucas [UNESP] Soto Pau, Felipe Armas, Octavio |
dc.subject.por.fl_str_mv |
1D numerical simulation Intake manifold Internal combustion engine Volumetric efficiency |
topic |
1D numerical simulation Intake manifold Internal combustion engine Volumetric efficiency |
description |
During the intake period in internal combustion engines, it has been noted that the cylinder volume is not completely occupied due to the variation of specific volume and the pressure drop along the supply system. Consequently, the volumetric efficiency in the cylinder is lowered, negatively affecting the engine power output. In this paper, numerical and experimental studies were performed to investigate different geometries of intake manifolds of internal combustion engines, with the aim of improving its efficiency. The numerical solutions were obtained through a 1D commercial code (GT-Power®) which solves the one-dimensional equations of continuity, momentum and energy, using a finite volume scheme. An experimental set-up was built and mass flow rate and pressure measurements of the intake air were carried out. The set-up is composed by an internal combustion engine, driven by an electric motor, and the experiments were performed without fuel and combustion. Numerical and experimental results were compared and a good agreement was found, thus confirming that the commercial code used is capable of simulating the kind of phenomena studied. Based on the Helmholtz resonator effect theory, a new intake manifold geometry was proposed. Measurements showed the novel geometry to improve the volumetric efficiency of the engine by 6% at 3500 rpm, the more common speed for this kind of engine, consequently increasing the indicated power by 3.68 kW (4.93 hp). The observed increase is worthy of note, considering the inherent difficulty to improve the volumetric efficiency near its maximum value for this type of engine, occurring around 3000 rpm. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-06T16:10:13Z 2019-10-06T16:10:13Z 2019-03-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.tsep.2018.12.003 Thermal Science and Engineering Progress, v. 9, p. 248-258. 2451-9049 http://hdl.handle.net/11449/188499 10.1016/j.tsep.2018.12.003 2-s2.0-85058483300 |
url |
http://dx.doi.org/10.1016/j.tsep.2018.12.003 http://hdl.handle.net/11449/188499 |
identifier_str_mv |
Thermal Science and Engineering Progress, v. 9, p. 248-258. 2451-9049 10.1016/j.tsep.2018.12.003 2-s2.0-85058483300 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Thermal Science and Engineering Progress |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
248-258 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128634393722880 |