Designing Turbochargers With an Integrated Design System

Qiu, Xuwen; Fredriksson, Carl; Baines, N. C.; Backlund, Markus

doi:10.1115/gt2013-94894

Cited by 2 publications

(2 citation statements)

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“…Turbocomponents are usually handled separately. Qiu et al 5 describe the importance of T/C design on engine system level, their work limited to centrifugal compressor (without volute). Ebel et al 6 propose a preliminary design method following the well known reverse model process, of Japikse and Baines 7 for both turbo-components.…”

Section: Introductionmentioning

confidence: 99%

1D multi-point marine turbocharger design, for optimal performance recovery

Ntonas

Aretakis

Koskoletos

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part A:

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An integrated turbocharger 1D design tool, allowing retrofit of both compressor and turbine is presented. An optimization procedure is employed, to design both compressor and turbine to match the entire turbocharged system in an optimal way. The optimization process focuses on engine specific fuel consumption reduction in the engine range of operation, while ensuring appropriate matching between turbomachinery components and the diesel engine. Structural integrity of both turbo-components is ensured by using simplified structural and modal analysis. Dimensionless parameters are used as optimization variables, for both compressor and turbine, allowing the design process to become fully automatic. The platform produces four optimal 1D geometries, of different possible centrifugal compressor diffuser and turbine combinations. The combination that gives the best improvement to the diesel engine operation is identified. A case study is presented, where all four turbocharger configurations are designed and analyzed aiming to at least recover the original diesel engine performance. The platform then sorts all four optimized turbocharger geometries based on annual fuel cost reduction. The best configuration achieves the largest fuel consumption reduction (0.4% for the case presented), while stable operation and structural integrity are ensured. Additionally, a study of how the new machine learning volute loss models affect the designed geometry is performed. Finally, a techno-economical assessment is performed in order to identify the most profitable retrofit option, turbocharger redesign being one of four possible turbocharger options considered by the authors. Redesigning the entire turbocharger is shown to provide the largest long term profit.

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Section: Introductionmentioning

confidence: 99%

1D multi-point marine turbocharger design, for optimal performance recovery

Ntonas

Aretakis

Koskoletos

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part A:

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show abstract

“…It is also combined with 1D model, for loss correlations adaptation. Japikse and Baines (1997) suggested a turbomachinery component design procedure, combining 1D and 3D model, a procedure followed by Qiu et al (2013), in T/C components design.…”

Section: Introductionmentioning

confidence: 99%

Integrated Simulation Framework for Assessing Turbocharger Fault Effects on Diesel-Engine Performance and Operability

et al. 2020

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Turbocharged diesel engines are extensively used in marine vessels, both as propulsion engines and as generator sets. The engines operation in the hostile marine environment results to performance degradation having a negative effect on the economics of the marine vessel's operation both in terms of fuel consumption and maintenance. This paper presents a turbocharged 4-stroke diesel engine simulation framework based on one-dimensional calculations and analysis. The framework is suitable for turbomachinery and heat exchanger components fault simulation predicting both turbocharger and diesel engine performance and operability. Meanline models were used in conjunction with beta lines method for generating accurate and detailed compressor and turbine performance maps, coupled with a single zone closed-cycle diesel engine model for generating engine performance characteristics. The simulation framework modules are adjusted and validated against measured data. Following specific faults are simulated utilizing physical consistent parameters such as blade friction and thickness based on relevant literature data. Overall system simulation and operation analysis is carried out assessing operability and performance parameters. Analysis results show a significant reduction in engine performance, especially in case of both turbo-components being fouled (22% power reduction), in contrast with the heat exchanger fouling where the power reduction is about 1%.

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Designing Turbochargers With an Integrated Design System

Cited by 2 publications

References 0 publications

1D multi-point marine turbocharger design, for optimal performance recovery

1D multi-point marine turbocharger design, for optimal performance recovery

Integrated Simulation Framework for Assessing Turbocharger Fault Effects on Diesel-Engine Performance and Operability

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