Towards Next Generation Control-Oriented Thermo-Kinetic Model for
                        Reactivity Controlled Compression Ignition Marine Engines

Vasudev, Aneesh; Cafari, Alberto; Axelsson, Martin; Mikulski, Maciej; Hyvönen, Jari

doi:10.4271/2022-01-1033

Cited by 4 publications

(6 citation statements)

References 45 publications

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“…The control-oriented model implemented in this work is based on a high-order physics-based model called University of Vaasa Advanced Thermokinetic Multizone Model (UVATZ), developed by Vasudev et al [25,27]. The model is capable of capturing the effects of fuel injection and mixture, in-cylinder mass and heat flow, heat-loss to the cylinder wall and heat release profile utilizing chemical kinetics mechanism presented in [28].…”

Section: Methodsmentioning

confidence: 99%

“…Model validation in earlier works on the same engine revealed 5% relative error for all combustion performance indicators, which are gross indicated mean effective pressure (IMEP gross ), 𝑝 max , crank angle at 10% (𝜃 10 ) and 50% (𝜃 50 ) energy released and net heat release. Complete details regarding the implementation and validation of the UVATZ model can be found in [25].…”

Section: Methodsmentioning

confidence: 99%

“…The current study is based on the same engine platform as in [25]. Thus, this provides the possibility to use UVATZ to explore the design space.…”

Section: Methodsmentioning

confidence: 99%

“…Marine engines have also traversed towards the RCCI within the field of lowtemperature combustion in the recent years. Many novel modeling methodologies have been developed, especially in the form of multizone models (MZM) [5,25,26]. However, the model-based control of RCCI combustion is at its initial stage in non-road and marine sector.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Low Temperature Combustion Modeling and Predictive Control of Marine Engines

Modabberian,

Storm,

Shamekhi

et al. 2024

Applied Sciences

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The increase of popularity of reactivity-controlled compression ignition (RCCI) is attributed to its capability of achieving ultra-low nitrogen oxides (NOx) and soot emissions with high brake thermal efficiency (BTE). The complex and nonlinear nature of the RCCI combustion makes it challenging for model-based control design. In this work, a model-based control system is developed to control the combustion phasing and the indicated mean effective pressure (IMEP) of RCCI combustion through the adjustments of total fuel energy and blend ratio (BR) in fuel injection. A physics-based nonlinear control-oriented model (COM) is developed to predict the main combustion performance indicators of an RCCI marine engine. The model is validated against a detailed thermo-kinetic multizone model. A novel linear parameter-varying (LPV) model coupled with a model predictive controller (MPC) is utilized to control the aforementioned parameters of the developed COM. The developed system is able to control combustion phasing and IMEP with a tracking error that is within a 5% error margin for nominal and transient engine operating conditions. The developed control system promotes the adoption of RCCI combustion in commercial marine engines.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…The current study is based on the same engine platform as in [25]. Thus, this provides the possibility to use UVATZ to explore the design space.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Low Temperature Combustion Modeling and Predictive Control of Marine Engines

Modabberian,

Storm,

Shamekhi

et al. 2024

Applied Sciences

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“…The SK54 mechanism, consisting of 54 species and 296 reactions, was chosen for this simulation. Yao et al [29] introduced this mechanism in 2017, and it has proven to be well suited for marine engine applications, especially in large-bore setups [32]. Aneesh Vasudev conducted a comprehensive validation of the SK54 mechanism against experimental data using a multiple zone model (MZM) approach simulation, ensuring its reliability [32].…”

Section: Chemical Kinetic Mechanism and Liquid Fuel Propertiesmentioning

confidence: 99%

Start of Injection Influence on In-Cylinder Fuel Distribution, Engine Performance and Emission Characteristic in a RCCI Marine Engine

Kakoee,

Mikulski,

Vasudev

et al. 2024

Energies

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Reactivity-controlled compression ignition (RCCI) is a promising new combustion technology for marine applications. It has offered the potential to achieve low NOx emissions and high thermal efficiency, which are both important considerations for marine engines. However, the performance of RCCI engines is sensitive to a number of factors, including the start of injection. This study used computational fluid dynamics (CFD) to investigate the effects of start of ignition (SOI) on the performance of a marine RCCI engine. The CFD model was validated against experimental data, and the results showed that the SOI has a significant impact on the combustion process. In particular, the SOI affected the distribution of fuel and air in the combustion chamber, which in turn affected the rate of heat release and the formation of pollutants. Ten different SOIs were implemented on a validated closed-loop CFD model from 96 to 42 CAD bTDC (crank angle degree before top dead center) at six-degree intervals. A chemical kinetic mechanism of 54 species and 269 reactions tuned and used for simulation of in-cylinder combustion. The results show that in early injection, high-reactivity fuel was distributed close to the liner. This distribution was around the center of late injection angles. A homogeneity study was carried out to investigate the local equivalence ratio. It showed a more homogenous mixture in early injection until 66 CAD bTDC, after which point, earlier injection timing had no effect on homogeneity. Maximum indicated mean effective pressure (IMEP) was achieved at SOI 48 CAD bTDC, and minimum amounts of THC (total hydrocarbons) and NOx were observed with middle injection timing angles around 66 CAD bTDC.

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