A Numerical Methodology for the Multi-objective Optimization of the DI Diesel Engine Combustion

Costa, Marco; Bianchi, Gian Marco; Forte, Claudio; Cazzoli, Giulio

doi:10.1016/j.egypro.2014.01.076

Cited by 31 publications

(12 citation statements)

References 23 publications

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“…Once the simulations have been validated, any number of parameters can be modified and readily tested. This encouraged development of additional techniques for the identification of optimization pathways with respect to combustion chamber design [25] or engine operating conditions [26,27]. The interest in optimization methods based on genetic algorithm (GA) has increased in the automotive industry over the last few years due to the wide range of solutions they offer in combination with CFD.…”

mentioning

confidence: 99%

Numerical Methodology for Optimization of Compression-Ignited Engines Considering Combustion Noise Control

Broatch¹,

Novella²,

Gómez-Soriano³

et al. 2018

SAE Int. J. Engines

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mentioning

confidence: 99%

Numerical Methodology for Optimization of Compression-Ignited Engines Considering Combustion Noise Control

Broatch¹,

Novella²,

Gómez-Soriano³

et al. 2018

SAE Int. J. Engines

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“…As it was reported in the literature, the swirl in diesel engines is an important parameter that affects the mixing rate of air and fuel, heat release rate, emissions, and overall engine performance (Costa et al, 2014). It also observed that there is an optimum level of swirl for particular combustion chamber geometry.…”

Section: Introductionmentioning

confidence: 63%

Experimental and Numerical Investigation of Air Flow Motion in Cylinder of Heavy Duty Diesel Engines

Demirkesen

Çolak²,

Savcı

et al. 2020

JAFM

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In recent years, numerical simulations have become key tool for diesel engine combustion system development due to the requirement of the shorter development duration for the improved performance and better emission levels. In this study, an approach, which integrates numerical and experimental methods in order to characterize the flow field in diesel engine cylinder, is presented. The steady-flow port bench testing, PIV (Particle Image Velocimetry) measurements and numerical simulation methods are used to determine the flow behavior inside the cylinder. Numerical simulation method is validated by using experimental results in terms of mass flow rate and swirl ratio in cylinder. Mass flow rate values predicted within 5 percent error and swirl ratio values predicted within 10 percent error. This proves the viability of numerical method as an important alternative to port bench measurements. In addition to that, cylinder-to-cylinder variation and effects of surface roughness are investigated by swirl ratio measurements and optical diagnostic. Results showed that surface quality and manufacturing problems have significant effects on the swirl ratio in cylinder.

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“…According to the constraint conditions, each design variable is geometric parameters of planar mechanism, so it must meets the requirements of planar mechanism freedom movement and at the same time the basic requirements of pantograph work. Scope of every design variable which can be concluded as follows: This article is from the pantograph structure parameters to study the equivalent mass, so the formula of equivalent mass can be further simplified as: (10) In order to further obtain the optimal value of equivalent mass, combined with the budget law, again from the impact factors to consider, get the following formula: (11) Combined with operation boundary condition, according to the above mathematical model, applying the optimization toolbox of MATLAB language programming, the optimization results are worked out. In which large values: d, L 4 , L 2 , ã, smaller values: a, b, k, L 3 .…”

Section: Matlab Optimization Methodsmentioning

confidence: 99%

“…From the previous formula, the trajectories of rising pantograph and equivalent mass are decided by the design variables. So this is a multi-objective optimization problem [9,10].…”

Section: The Constraint Conditionsmentioning

confidence: 99%

Optimum Design and Simulation of Structure Parameters of Pantograph Based on Equivalent Mass

Zhang¹

2015

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Based on the mathematical model of geometric relations of high-speed single-arm pantograph, structure parameters of the high-speed single-arm pantograph are optimized and designed applying multi-objective Optimization technology. Considering good contact of pantograph-catenary, rising height of pantograph and time of rising and dropping pantograph as the constraint condition, and considering the trajectory of pantograph head and the equivalent mass of pantograph as the target, a group of optimal structural parameters are gained combining with MATLAB software. The three-dimensional modeling of pantograph is completed according to the results of optimization. Applying virtual prototype technology to simulated analysis can verify the precision of the optimization results and methods.

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A Numerical Methodology for the Multi-objective Optimization of the DI Diesel Engine Combustion

Cited by 31 publications

References 23 publications

Numerical Methodology for Optimization of Compression-Ignited Engines Considering Combustion Noise Control

Numerical Methodology for Optimization of Compression-Ignited Engines Considering Combustion Noise Control

Experimental and Numerical Investigation of Air Flow Motion in Cylinder of Heavy Duty Diesel Engines

Optimum Design and Simulation of Structure Parameters of Pantograph Based on Equivalent Mass

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