A Procedure for the Unsteady Characterization of Turbochargers in Reciprocating Internal Combustion Engines

The gases emissions measurement systems in internal combustion engines are strict and expensive nowadays. For this reason, a virtual instrument was developed to measure the combustion emissions from an internal combustion diesel engine, running with diesel-biodiesel mixtures. This software is called virtual instrument for emissions measurement (VIEM), and it was developed in the platform of LabVIEW 2010® virtual programming. VIEM works with sensors connected to a signal conditioning system, and a data acquisition system is used as interface for a computer in order to measure and monitor in real time the emissions of O2, NO, CO, SO2, and CO2 gases. This paper shows the results of the VIEM programming, the integrated circuits diagrams used for the signal conditioning of sensors, and the sensors characterization of O2, NO, CO, SO2, and CO2. VIEM is a low-cost instrument and is simple and easy to use. Besides, it is scalable, making it flexible and defined by the user.

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Performance, Efficiency, and Emissions Characterization of Reciprocating Internal Combustion Engines Fueled with Hydrogen/Natural Gas Blends

10.2172/927586 ◽

2007 ◽

Author(s):

Kirby S. Chapman ◽

Amar Patil

Keyword(s):

Natural Gas ◽

Internal Combustion Engines ◽

Internal Combustion ◽

Combustion Engines

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Detailed Characterization of Gaseous Emissions from Advanced Internal Combustion Engines

10.4271/2021-01-0634 ◽

2021 ◽

Author(s):

Bryan Zavala ◽

Cary Henry ◽

Svitlana Kroll

Keyword(s):

Internal Combustion Engines ◽

Internal Combustion ◽

Combustion Engines ◽

Gaseous Emissions ◽

Detailed Characterization

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Experimental and Numerical Characterization of High-Pressure Methane Jets for Direct Injection in Internal Combustion Engines

10.4271/2020-01-2124 ◽

2020 ◽

Author(s):

Alessandro Montanaro ◽

Luigi Allocca ◽

Angelo De Vita ◽

Stefano Ranieri ◽

Francesco Duronio ◽

...

Keyword(s):

High Pressure ◽

Internal Combustion Engines ◽

Direct Injection ◽

Internal Combustion ◽

Combustion Engines ◽

Numerical Characterization

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Development of Test Bench and Characterization of Performance in Small Internal Combustion Engines

10.4271/2013-32-9036 ◽

2013 ◽

Cited By ~ 6

Author(s):

Joseph K. Ausserer ◽

Paul J. Litke ◽

Jon-Russell Groenewegen ◽

Alexander Rowton ◽

Marc Polanka ◽

...

Keyword(s):

Internal Combustion Engines ◽

Test Bench ◽

Internal Combustion ◽

Combustion Engines

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Thermal characterization of CHP-User Needs Interaction and Optimized Choice of the Internal Combustion Engines in the CHP Plants

Energy Procedia ◽

10.1016/j.egypro.2015.11.841 ◽

2015 ◽

Vol 82 ◽

pp. 929-935 ◽

Cited By ~ 8

Author(s):

Raniero Sannino

Keyword(s):

Internal Combustion Engines ◽

Thermal Characterization ◽

Internal Combustion ◽

User Needs ◽

Combustion Engines

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Steady State Experimental Characterization of a Twin Entry Turbine under Different Admission Conditions

Energies ◽

10.3390/en14082228 ◽

2021 ◽

Vol 14 (8) ◽

pp. 2228

Author(s):

Vittorio Usai ◽

Silvia Marelli

Keyword(s):

Internal Combustion Engines ◽

Internal Combustion ◽

Normal Operation ◽

Specific Power ◽

Combustion Engines ◽

Experimental Characterization ◽

Good Efficiency ◽

Common Solution ◽

Swallowing Capacity

The increasingly restrictive limits on exhaust emissions of automotive internal combustion engines imposed in recent years are pushing OEMs to seek new solutions to improve powertrain efficiency. Despite the increase in electric and hybrid powertrains, the turbocharging technique is still one of the most adopted solution in automotive internal combustion engines to achieve good efficiency with high specific power levels. Nowadays, turbocharged downsized engines are the most common solution to lower CO2 emissions. Pulse turbocharging is the most common boosting layout in automotive applications as the best response in terms of time-to-boost and exhaust energy extraction. In a high-fractionated engine with four or more cylinders, a twin entry turbine can be adopted to maximize pulse turbocharging benefits and avoid interaction in the discharge phase of the cylinders. The disadvantages of the twin entry turbine are mainly due to the complexity of the exhaust piping line and the high amount of information required to build a rigorous and reliable matching model. This paper presents a detailed experimental characterization of a twin entry turbine with particular reference to the turbine efficiency and the swallowing capacity under different admission conditions. The steady flow experimental campaign was performed at the turbocharger test bench of the University of Genoa, in order to analyze the behavior of the twin entry turbine in full, partial and unbalanced admission. These are the conditions in which the turbine must work instantaneously during its normal operation in engine application. The results show a different swallowing capacity of each sector and the interactions between the two entries.

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