A new method for optimum selection of two-stage turbocharger for heavy duty diesel engine

Sanaye, Sepehr; Ghadikolaee, Shahram Sedghi; Moghadam, Seyed Ahmad Akbari

doi:10.1504/ijhvs.2015.070416

Cited by 6 publications

(8 citation statements)

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“…Such simulations used a predictive knock model. The minimum BSFC criterion was also used with the 1-D simulations of the two-stage turbocharging system [9]. The results were very optimistic, indicating an increase in the brake power and a reduction in fuel consumption.…”

Section: Introductionmentioning

confidence: 99%

Transient Simulation of the Six-Inlet, Two-Stage Radial Turbine under Pulse-Flow Conditions

Kozak

Mazuro

2021

Energies

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In recent years, the automotive sector has been focused on emission reductions using hybrid and electric vehicles. This was mainly caused by political trends promoting “green energy”. However, that does not mean that internal combustion engines (ICEs) should be forgotten. The ICE has still the potential of recovering energy from exhaust gases. One of the promising ways to recover energy is turbocharging. Over the years engine manufacturers have designed very efficient turbocharger systems which have greatly increased the overall engine efficiency. This led to pollutant emission reductions. This paper presents the results of the three-dimensional (3-D) numerical simulations of the two-stage, six-inlet turbocharging system under the influence of unsteady, pulsed-flow conditions. The calculations were carried out for three turbine speeds. The most interesting results of this study were the separation of exhaust gases coming from the six-exhaust pipes and the performance of both stages under pulse-flow conditions. The two-stage turbocharging system was compared against the single-stage turbocharging system and the results showed that the newly designed two-stage turbine system properly separated the exhaust gases of the adjacent exhaust pipes.

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Section: Introductionmentioning

confidence: 99%

Transient Simulation of the Six-Inlet, Two-Stage Radial Turbine under Pulse-Flow Conditions

Kozak

Mazuro

2021

Energies

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“…The solution can be improved significantly by using suitable optimization algorithms. Therefore, many researchers adopted various optimization techniques to enhance the PD process (Perdichizzi and Savini, 1985; Sanaye et al , 2015; Ebaid and Al-Hamdan, 2017; Khalfallah and Adel, 2015; Mojaddam and Pullen, 2019). This has been done while considering different formulations of the optimization problem involving various models for evaluating the CC’s performances.…”

Section: Introduction and Literature Reviewmentioning

confidence: 99%

“…This has been done while considering different formulations of the optimization problem involving various models for evaluating the CC’s performances. Hence, we can distinguish those based on the 1D loss model (Perdichizzi and Savini, 1985; Sanaye et al , 2015; Ebaid and Al-Hamdan, 2017; Elshamy et al , 2008), the two-dimensional (2D) through flow (Casey et al , 2008) and the three-dimensional (3D) computational fluid dynamics (CFD) models (Khalfallah and Adel, 2015; Mojaddam and Pullen, 2019). The 1 D loss models are preferred in a PD phase because they offer a good compromise in terms of quality and cost-effectiveness.…”

Section: Introduction and Literature Reviewmentioning

confidence: 99%

Aerodynamic preliminary design optimization of a centrifugal compressor turbocharger based on one-dimensional mean-line model

Bourabia

Abed

Cerdoun

et al. 2021

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Purpose The purpose of this paper is the development of a new turbocharger compressor is a challenging task particularly when both wider operating range and higher efficiency are required. However, the cumbersome design effort and the inherent calculus burden can be significantly reduced by using appropriate design optimization approaches as an alternative to conventional design techniques. Design/methodology/approach This paper presents an optimization-based preliminary-design (OPD) approach based on a judicious coupling between evolutionary optimization techniques and a modified one-dimensional mean-line model. Two optimization strategies are considered. The first one is mono-objective and is solved using genetic algorithms. The second one is multi-objective and it is handled using the non-dominated sorting genetic algorithm-II. The proposed approach constitutes an automatic search process to select the geometrical parameters of the compressor, ensuring the most common requirements of the preliminary-design phase, with a minimum involvement of the designer. Findings The obtained numerical results demonstrate that the proposed tool can rapidly produce nearly optimal designs as an excellent basis for further refinement in the phase by using more complex analysis methods such as computational fluid dynamics and meta-modeling. Originality/value This paper outlines a new fast OBPD approach for centrifugal compressor turbochargers. The proposal adopts an inverse design method and consists of two main phases: a formulation phase and a solution phase. The complexity of the formulated problem is reduced by using a sensitivity analysis. The solution phase requires to link, in an automatic way, three processes, namely, optimization, design and analysis.

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“…The results indicate that the distribution ratio of the pressure ratio, total turbine expansion ratio, and equivalent efficiency are the main factors affecting turbocharge pressure and engine performance. Liu et al [9] and Sanaye et al [10] also considered the influence of two-stage turbocharging distribution and turbine flow on the basis of the former and established a turbocharger calculation model and genetic algorithm (GA) optimization technology. Compared with the conventional methods, the matching method enables the matching points under different operating conditions to be located in a more reasonable area on the compressor map Li [11], Fenghua [12], and Shi et al [13] carried out theoretical research on the matching problem of an adjustable two-stage turbocharging system at different altitudes.…”

Section: Introductionmentioning

confidence: 99%

“…To continuously improve the efficiency of the turbocharger, Bo et al [20,21] conducted a numerical analysis of the turbocharger flow through a CFD (Computational Fluid Dynamics) simulation and experimental measurements and analyzed the relationship between the two, finding that the improvement of the compressor inlet air flow quality can effectively improve the efficiency of the turbocharger. In addition, Sanaye et al [10], Shi et al [19] and Lei et al [22] tested the different inlet pressures of the turbocharger.…”

Section: Introductionmentioning

confidence: 99%

Establishment of a Two-Stage Turbocharging System Model and Analysis on Influence Rules of Key Parameters

Tian

et al. 2020

Energies

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This paper took a two-stage turbocharged heavy-duty six-cylinder diesel engine as the research object and established a two-stage turbocharging system matching model. The influence rules between the two-stage turbocharging key parameters were analyzed, while summarizing an optimization method of key parameters of a two-stage turbocharger. The constraint equations for the optimal distribution principle of the two-stage turbocharger’s pressure ratio and expansion ratio were proposed. The results show that when the pressure ratio constraint equation and expansion ratio constraint equation are satisfied, the diesel engine can achieve the target pressure ratio, while the total energy consumption of the turbocharger is the lowest.

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A new method for optimum selection of two-stage turbocharger for heavy duty diesel engine

Cited by 6 publications

References 0 publications

Transient Simulation of the Six-Inlet, Two-Stage Radial Turbine under Pulse-Flow Conditions

Transient Simulation of the Six-Inlet, Two-Stage Radial Turbine under Pulse-Flow Conditions

Aerodynamic preliminary design optimization of a centrifugal compressor turbocharger based on one-dimensional mean-line model

Establishment of a Two-Stage Turbocharging System Model and Analysis on Influence Rules of Key Parameters

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