Design and Performance of a Controlled Turbocharging System on Marine Diesel Engines

Vlaskos, Ioannis; Codan, Ennio; Alexandrakis, Nikolaos; Papalambrou, George; Ioannou, Marios; Kyrtatos, Nikolaos; Boom, Rick

doi:10.1115/icef2006-1520

Cited by 4 publications

(2 citation statements)

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“…36 Compared to the original version of the engine, some modifications have taken place on this test engine: A prototype turbocharger (ABB TPS48-EX) has substituted the original one and the common exhaust receiver has been removed. 37 Instead, an exhaust manifold employing the pulse turbocharging system has been installed, in order to connect the engine cylinder’s exhaust ports to a three-way turbine entry. These modifications were made to improve engine response during sudden load change.…”

Section: Experimental Equipmentmentioning

confidence: 99%

Analysis and characterization of a marine turbocharger’s unstable performance

Vrettakos

2017

Proceedings of the Institution of Mechanical Engineers, Part M:

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In this article, the results of an extended set of experiments on a turbocharged four-stroke marine diesel engine are presented. By modifying the engine's intake manifold and injecting compressed air into it, it was possible to raise the pressure downstream of the turbocharger's compressor and force it into unstable operation. Tests were performed through the entire operating envelope of the engine. Depending on the operating mode of the engine (steady state, transient) and the operating load, it was possible to identify different forms of compressor instability. The equipment used enabled the creation of detailed profiles of engine and turbocharger performance. By applying time-and frequency-domain analysis tools, the measurements were utilized to characterize the extent and form of instability taking place at each operating point of the engine. The results and correlations made along with remarks on the instrumentation used during the experiments can be used to provide quantitative input for surge control-oriented models and the development of control systems for surge avoidance and mitigation. Moreover, they will be used as experimental reference for the validation of a surge model-engine simulation code combination.

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Section: Experimental Equipmentmentioning

confidence: 99%

Analysis and characterization of a marine turbocharger’s unstable performance

Vrettakos

2017

Proceedings of the Institution of Mechanical Engineers, Part M:

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“…Therefore, the charging system is called the 'semiconstant-pressure turbocharging system' at this stage. References [8] to [10] have reported research on the VGEM turbocharging system for a five-cylinder engine. However, they focused on the engine emissions rather than on the performance analysis of the whole system.…”

Section: Introductionmentioning

confidence: 99%

Preliminary study on a variable-geometry exhaust manifold turbocharging system

Jing-ci

Deng

et al. 2011

Proceedings of the Institution of Mechanical Engineers, Part D:

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A variable-geometry exhaust manifold (VGEM) turbocharging system can realize a switch between two charging modes by use of a controllable valve, and it can give a good performance at both high-speed operation and low-speed operation. In this paper, a new idea about the VGEM turbocharging system for a six-cylinder diesel engine is proposed, and preliminary experiments on this are carried out. Experiments on the two cases when the controllable valve is closed or is open respectively are performed using two different exhaust manifolds. The steady state experimental results indicate that the turbocharging system works as a pulse turbocharging system and the pulse energy can be utilized fully when the controllable valve is closed at low-speed operation; the turbocharging system works as a semiconstantpressure turbocharging system and the pumping loss can be reduced fully when the controllable valve is open at high-speed operation. The transient experimental results indicate that the transient performance of the pulse turbocharging system is better than that of the semiconstant-pressure turbocharging system.

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