Zero-dimensional ROHR simulation for DI diesel engines – A generic approach

Chmela, Franz; Pirker, Gerhard; Wimmer, Andreas

doi:10.1016/j.enconman.2007.07.004

Cited by 33 publications

(23 citation statements)

References 3 publications

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“…The most commonly used types are the cycle mean value engine models (MVEM) [28][29][30][31][32] and the zero-dimensional models [33][34][35][36][37]. The former are fast running and need less input, but they require an elaborate setting up phase in order to predict the engine behaviour with sufficient accuracy.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Two Stroke Marine Diesel Engine Operation Including Turbocharger Cut-Out by Using a Zero-Dimensional Model

2015

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Abstract:In this article, the operation of a large two-stroke marine diesel engine including various cases with turbocharger cut-out was thoroughly investigated by using a modular zero-dimensional engine model built in MATLAB/Simulink environment. The model was developed by using as a basis an in-house modular mean value engine model, in which the existing cylinder block was replaced by a more detailed one that is capable of representing the scavenging ports-cylinder-exhaust valve processes. Simulation of the engine operation at steady state conditions was performed and the derived engine performance parameters were compared with the respective values obtained by the engine shop trials. The investigation of engine operation under turbocharger cut-out conditions in the region from 10% to 50% load was carried out and the influence of turbocharger cut-out on engine performance including the in-cylinder parameters was comprehensively studied. The recommended schedule for the combination of the turbocharger cut-out and blower activation was discussed for the engine operation under part load conditions. Finally, the influence of engine operating strategies on the annual fuel savings, CO2 emissions reduction and blower operating hours for a Panamax container ship operating at slow steaming conditions is presented and discussed. OPEN ACCESSEnergies 2015, 8 5739

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Section: Introductionmentioning

confidence: 99%

Analysis of Two Stroke Marine Diesel Engine Operation Including Turbocharger Cut-Out by Using a Zero-Dimensional Model

2015

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“…Previous work in Diesel modeling presented in [6] used a combination of the Arrhenius rate and the Magnussen rate [25], which describes the effects of turbulence. The motivation for omitting the turbulence dependence here was that PPC operation features a larger portion of premixed combustion than traditional Diesel combustion, particularly at lower loads, which should increase the importance of chemistry.…”

Section: B Burn Rate Modelingmentioning

confidence: 99%

“…The use of a quadratic dependency on the combustion duration was previously used in [6], [8] among others.…”

Section: Fuel Mass and Burn Ratementioning

confidence: 99%

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Single-zone Diesel PPC modeling for control

Widd

Tunestål

Åkesson

et al. 2012

2012 American Control Conference (ACC)

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Partially premixed combustion (PPC) is a combustion concept with similarities to both Diesel and Homogeneous Charge Compression Ignition (HCCI) combustion. It provides a combustion mode with better controllability than HCCI without increasing the emissions of nitrogen oxides and soot to the level of traditional Diesel engines. The model described in this paper aims to describe the main features of Diesel PPC combustion within the closed part of an engine cycle. It is a single-zone model including heat losses to the cylinder walls as well as fuel evaporation losses. The simulation framework used allows optimization problems to be formulated based on the model equations. The overarching goal of this modeling is to be able to use the model explicitly for optimization.

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“…Chmela [25] put forward a MCC (mixture controlled combustion) model, in which the reaction rate of fuel is controlled by the density of turbulent kinetic energy. Chmela [26] put forward another model based on the three combustion phases, in which reaction rate is controlled by a Magnussen type equation and Arrhenius type equation. Rezaei [27] combined spray model with a heat release model and adopted a different laminar time scale equation.…”

Section: Introductionmentioning

confidence: 99%

A Zero-Dimensional Mixing Controlled Combustion Model for Real Time Performance Simulation of Marine Two-Stroke Diesel Engines

et al. 2019

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The paper presents a performance prediction model of marine low-speed two-stroke diesel engines based on an advanced MCC (mixture controlled combustion) model coupled with a fuel injection model. Considering the time of real calculation, the so-called “concentrated exhausting gas” scavenging model and the working process model are used in the present work, and improved by introducing the ratio of pure combustion product over the total gas mass in the cylinder as an expression of the working medium components. The reaction rate model in the zero-dimensional MCC model is improved by introducing the fraction of combustion product in the fuel spray, and the relationship between the combustion model and scavenging quality is established. Meanwhile, the combustion model was simplified in the diffusion combustion phases and integrated with the fuel injection model in order to respond to the change of injection profile and injection timing. A large-scale low-speed marine diesel engine was used for a simulation. The results of the whole model are consistent with experimental data and the speed of calculation is fast enough for real time simulation of low speed and medium speed diesel engines. The prediction model can be used in the design and calibration of the electronic control system and performance optimization of the marine two-stroke diesel engine.

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Zero-dimensional ROHR simulation for DI diesel engines – A generic approach

Cited by 33 publications

References 3 publications

Analysis of Two Stroke Marine Diesel Engine Operation Including Turbocharger Cut-Out by Using a Zero-Dimensional Model

Analysis of Two Stroke Marine Diesel Engine Operation Including Turbocharger Cut-Out by Using a Zero-Dimensional Model

Single-zone Diesel PPC modeling for control

A Zero-Dimensional Mixing Controlled Combustion Model for Real Time Performance Simulation of Marine Two-Stroke Diesel Engines

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