Investigating the Multibody Dynamics of the Complete Powertrain System

Picarelli, Alessandro; Dempsey, Mike

doi:10.3384/ecp09430085

Cited by 8 publications

(6 citation statements)

References 7 publications

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“…The sonic restrictor was integrated in an engine model developed using the Engines library (Picarelli, A. et al, 2009;Roberts, N. et al, 2013). A 0.6 L motorcyclederived four-cylinder naturally aspirated spark ignition engine was used.…”

Section: The Engine Modelmentioning

confidence: 99%

Investigating the Effect of a Sonic Restrictor in the Intake of an Engine

Gallarotti¹,

Picarelli²,

Dempsey³

2017

Linköping Electronic Conference Proceedings

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The air induction system is one of the engine subsystems that most influences fuel efficiency and power generation, especially in restricted race engine applications. In this paper, the quasi-1D model of a sonic restrictor is presented, together with its integration in an engine model, in order to investigate the behaviour of the engine power and torque when the choked condition is reached. The study shows how power and torque curves are affected when a sonic restrictor is installed within the intake system and outlines the need of detailed simulations in a restricted engine development process, to avoid steep engine power reductions at high speeds.

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Section: The Engine Modelmentioning

confidence: 99%

Investigating the Effect of a Sonic Restrictor in the Intake of an Engine

Gallarotti¹,

Picarelli²,

Dempsey³

2017

Linköping Electronic Conference Proceedings

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“…Others have demonstrated that Modelica is suitable for engine modeling, 9 but they have not focused on modeling the gas exchange on a diesel engine with several actuators and on the exhaust temperature entering the EATS, which is the focus in this article. The described models in this chapter will be validated in section “Validation.”…”

Section: Engine Modeling In Dymolamentioning

confidence: 99%

“…There also exist several engine models based on the object-oriented Modelica language. 9,10 The benefits by implementing in Dymola, 11 one of the leading tools that uses Modelica language, is that it has several good modeling properties, e.g., models, that can be extended, replaced and redeclared. Dymola utilizes connectors instead of traditional signals where the direction must be pre-defined.…”

Section: Introductionmentioning

confidence: 99%

Engine air path management and exhaust condition modeling in Dymola

Dahl

Andersson²

2014

International Journal of Engine Research

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In order to comply with increasing consumer and regulatory demand for improved fuel economy and lower emissions, the engines and engine aftertreatment systems must be improved continuously. Since the complete system is very complex, models are useful in order to be able to cost efficiently develop new control strategies and selection of hardware. In this article, a model library for dynamic engine modeling in Dymola is presented. The library consists of models of the standard engine components such as manifolds, pipe, turbines, compressors, valves and mechanics. The combustion model is a mean value model and the focus has been on air path management and exhaust modeling with real-time-like simulation times, useful for engine optimization and for evaluation of control strategies. Engine simulation results from a 13-L Volvo engine demonstrates that the models capture the dynamics and have sufficient accuracy to be useful in engine optimization.

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“…The main reasons for choosing Modelica are the flexibility, expressiveness and openness of the language, as compared to domain specific tools, and the possibility to extend tools and libraries with in-house IP and know-how. Others have demonstrated that Modelica is suitable for engine modeling [4,5], but the focus has not been on gas exchange modeling or predicting the exhaust gas temperature entering the EATS.…”

Section: Engine Modeling In Dymolamentioning

confidence: 99%

“…The engine system model is configured as shown in components, each separated by volume components. The compressor is connected to an inertia model (5) that is also connected to the VGT component (13).…”

Section: Model Descriptionmentioning

confidence: 99%

Gas Exchange and Exhaust Condition Modeling of a Diesel Engine using the Engine Dynamics Library

Dahl

Andersson

2012

Linköping Electronic Conference Proceedings

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In this paper the newly developed Engine Dynamics Library is presented. Ever increasing consumer and regulatory demand for improved fuel economy and lower emissions forces the engines and Engine After-Treatment Systems (EATS) to be improved continuously. Since the complete system is very complex, models are useful in cost effectively developing new control strategies and select hardware. The library is based on a mean-value combustion model and the focus lies on modeling the gas exchange with real-time like simulation times, useful for engine optimization and for evaluation of control strategies. The library contains models of the standard engine components such as manifolds, pipe, turbines, compressors, valves, mechanics, etc. Simulation results from Dymola for a 13 L Volvo truck engine demonstrate that the model captures the transient flow and temperatures and emission trends, and has sufficient accuracy to be useful in engine optimization. The physical modeling approach allows for virtual prototyping by replacing individual components, which is an important advantage over black-box modeling. It is shown that the model captures essential system properties in the gas exchange, such as non-minimum phase behavior and sign reversal for VGT and EGR valve actuation. The model has been calibrated using surface fitting of maps and leastsquares estimation of parameters in Matlab, as well as parameter optimization using JModelica and FMI.

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Investigating the Multibody Dynamics of the Complete Powertrain System

Cited by 8 publications

References 7 publications

Investigating the Effect of a Sonic Restrictor in the Intake of an Engine

Investigating the Effect of a Sonic Restrictor in the Intake of an Engine

Engine air path management and exhaust condition modeling in Dymola

Gas Exchange and Exhaust Condition Modeling of a Diesel Engine using the Engine Dynamics Library

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