Sensitivity analysis of the dynamic response of an electronic fuel injector regarding fuel properties and operating conditions

Hu, Nao; Yang, Jianguo; Zhou, Peilin

doi:10.1016/j.applthermaleng.2017.10.071

Cited by 20 publications

(8 citation statements)

References 41 publications

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“…22 At present, it has been widely used in fuel injection performance analysis for diesel engine fuel system. 8,23–26 The AMESim simulation model of the system studied in this article is proposed as shown in Figure 2. During modeling, the basic modeling principles of AMESim software are strictly followed.…”

Section: System Modeling and Validationmentioning

confidence: 99%

Research on the correlation between fuel injection quantity and key structural parameters for the fuel system of marine diesel engines

Fan

Liu

Bai

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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In order to demonstrate the relationship between the fuel injection quantity and the structural parameters of the fuel system for large marine diesel engines, an AMESim model of a double-valve controlled fuel system is proposed. The accuracy of the model is validated in view of fuel injection quantity and system pressures. The correlation analysis is performed to illustrate the effects of single parameters and the interactions between different parameters on the fuel injection quantity. Considering the high calculation cost of the simulation model, the prediction model between the fuel injection quantity and the structural parameters for each working condition is obtained based on D-optimal design of experiments and the response surface methodology in this article. For the maximum deviation between the calculated and predicted fuel injection quantity is only 4.27%, the prediction models could be used for further analysis. And the results show that the diameters of high-pressure fuel tube (HPFT), small and big ends of pressure amplification piston (PAP) are the key single parameters. The absolute values of their correlation coefficients are between 0.77 and 0.87, between 0.22 and 0.43 and between 0.14 and 0.26 respectively. The correlation coefficients for the other parameters are all relatively small. For interactive parameters, the absolute values for all the correlation coefficients are less than 0.1. And the interactions between the diameters of big and small diameters of PAP, between the diameter of small end of PAP and the diameter of HPFT, between the diameter of HPFT and the pre-tightening force of needle spring influence the fuel injection quantity relatively obviously.

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Section: System Modeling and Validationmentioning

confidence: 99%

Research on the correlation between fuel injection quantity and key structural parameters for the fuel system of marine diesel engines

Fan

Liu

Bai

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…In this model, some assumptions were made: (1) all the variations are isothermal, and therefore, the fuel temperature and the fuel properties were assumed to be constant along the injector and equal to those at the injector inlet; 10 (2) the pressure feeding the model is constant; therefore, it ignores the pressure fluctuations caused by the cyclical oil supply from the high-pressure pumps. 21 The model was validated with the experimental injection rate of 160 MPa rail pressures. Figures 5 and 6 represent the principle of fuel injector test system and the experiment environment, respectively.…”

Section: Simulation Conditions and Model Validationmentioning

confidence: 99%

“…The injector dynamic response is mainly decided by the injection rate slopes, so these tiny differences in the injection rate can hardly have an impact on it. 10,21…”

Section: Simulation Conditions and Model Validationmentioning

confidence: 99%

“…Many of the research performed on hydraulic response characteristic in HPCR system have dealt with the fuel properties (fuel density, volume modulus and viscosity) and temperature. [21][22][23] However, few studies have mentioned the relationship between structural parameters and hydraulic response characteristics of electronic fuel injector in the literature. Hu et al 24 defined the hydraulic response as opening delay and closing delay and built a complete and detailed one-dimensional (1D) model of the electronic fuel injector, which integrated into an optimization model.…”

Section: Introductionmentioning

confidence: 99%

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Study on the sensitivity of the hydraulic response characteristics of the electronic fuel injector regarding the key structural parameters

Feng

Wang

et al. 2019

Advances in Mechanical Engineering

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The sensitivity of key structural parameters to the hydraulic response characteristics in an electronic fuel injector is investigated. First, the hydraulic response characteristic is defined in detail (the opening/closing delay and the opening/closing time). Second, the key structural parameters influencing the hydraulic response characteristics are derived. Finally, the importance and effects of key structural parameters on hydraulic response characteristics are examined, by using the design of experiments method and the range analysis. Results show that the fuel inlet passage diameter is the primary influencing factor to the opening delay and closing delay, while the control piston diameter has the dominant effect on opening time and closing time. A small opening delay and a small opening time prefer a little fuel inlet passage diameter and control piston diameter; however, they contribute to a large closing time and closing delay. The fuel outlet passage diameter is the secondary influencing factor in opening delay, but the second factor that affects the opening time is the diameter of needle.

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“…A viscosidade está relacionada com a força de atrito, que impede o movimento da agulha. A perda de pressão tem relação direta com o atrito, densidade e velocidade do fluido(HU;YANG;ZHOU, 2018).A maioria dos estudos sobre injetores avaliam a gasolina e o sistema de injeção direta de combustível Padala et al (2013). investigaram sobre injetores do sistema PFI com o uso do etanol.…”

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Medição on-board das emissões de CO2 por meio do consumo energético monitorado via unidade de controle de veículo flex.

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de²

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Dedico esta tese a meu Pai Orlando de Salvo (in memoriam); graças ao seu suporte e incentivo para seguir na área de engenharia e tecnologia, encontrei o meu propósito de vida. AGRADECIMENTOSAo longo do desenvolvimento desta tese de doutorado e antes dela, muitas pessoas estiveram envolvidas e, direta ou indiretamente, trouxeram relevantes contribuições.A Deus, pela inspiração diante das incertezas e por permitir ao longo do caminho encontrasse pessoas especiais que me auxiliaram e orientaram na medida certa para o meu crescimento e aprendizagem. Ao Professor Dr. Flávio Vaz de Almeida com sua incansável dedicação nas orientações e esclarecimentos que se fizeram necessários ao longo desta caminhada. Agradeço pelos ensinamentos, paciência e exemplo de competência com que me conduziu no desenvolvimento de habilidades para a pesquisa científica e que se consolidaram com a composição desta tese e das publicações.Ao Dr. Vanderlei Borsari membro da banca de qualificação, pelas inúmeras recomendações e contribuições que muito enriqueceram esta tese e pelo incentivo na realização dos ensaios. Aos professores Dr. Cláudio Luiz Marte e Dr. Edvaldo Simões da Fonseca Junior, pelos ensinamentos perante os desafios da jornada a fim de cumprir as disciplinas e abrir novos horizontes com o incentivo à pesquisa.Agradeço à professora Maria Tereza de Souza Saraiva, minha orientadora de mestrado no Centro Universitário da FEI que com seus ensinamentos e experiência me auxiliou na transição do mestrado para o doutorado. Ao Sr. Francisco A. Marino Salotti, por sua prestatividade na adequação e funcionalidade do laboratório de emissões e dinamômetro do IEE.Ao Rafael Rodrigues de Mello do IPT, que tanto contribuiu nos métodos de medições de consumo de combustível e verificação das especificações dos combustíveis.Ao incansável trabalho prestado pelo Bruno Silva Pereira e Demerson Moscardini durante todos os experimentos deste estudo, desde os primeiros testes de consumo até a medição final nos ensaios de rodagem com o analisador de gases portátil. A vocês meu muito obrigado pela dedicação, empenho e prontidão durante esta longa jornada que desenvolvemos nos últimos anos. Ao Lucas Motta de Novaes pela grande contribuição não somente nos preparativos do veículo de ensaio, mas também por viabilizar o ensaio final com o veículo para teste em rodagem. Ao Felipe Jato, por sua dedicação no desenvolvimento do chicote para o uso da unidade de controle de teste que asseguraram o funcionamento do veículo em rodagem. Ao professor Dr. Edson C. Kitani pelas orientações, não somente sobre as tecnologias de injeção de combustível, mas também, pelo sistema de posicionamento RTK (Real Time Kinematic) e principalmente pela ampla experiência passada sobre o desenvolvimento científico e acadêmico.Palavras-chave: Unidade de controle do motor (ECU), Gases de Efeito Estufa (GEE), dinamômetro de chassi, etanol, emissões em tráfego real (RDE).

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Sensitivity analysis of the dynamic response of an electronic fuel injector regarding fuel properties and operating conditions

Cited by 20 publications

References 41 publications

Research on the correlation between fuel injection quantity and key structural parameters for the fuel system of marine diesel engines

Research on the correlation between fuel injection quantity and key structural parameters for the fuel system of marine diesel engines

Study on the sensitivity of the hydraulic response characteristics of the electronic fuel injector regarding the key structural parameters

Medição on-board das emissões de CO2 por meio do consumo energético monitorado via unidade de controle de veículo flex.

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