Improved transient control of a two-stroke marine diesel engine with variable geometry turbine

Nikolaos Xiros, Gerasimos Theotokatos

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

In this work, the cycle-mean-value approach to marine engine process simulation is considered. At first, a basic principles model is employed where the engine crankshaft and turbocharger shaft speeds are obtained by integration of the angular momentum conservation differential equations. Any other engine variable can then be obtained by solving a set of nonlinearly-coupled, algebraic equations, corresponding to energy and mass conservation through the engine. Nonlinear data analysis is then performed on this process model. By approximating the torque maps, generated by the thermodynamic basic principles model, with neural nets, explicit functional relationships are obtained. Identification of the power-plant operating regimes through linearization and decomposition is finally performed. In effect, a supervisory power-plant controller structure, applicable to real-time control and diagnostics, is proposed, incorporating the nonlinear state-space description of the plant.

Conference

ConferenceASME-Internal Combustion Engine Division (ICED), 2011 Fall Technical Conference,
CountryUnited States
CityMorgantown
Period2/10/115/10/11

Fingerprint

Marine engines
Diesel engines
Turbines
Engines
Geometry
Conservation
Power plants
Crankshafts
Angular momentum
Real time control
Linearization
Differential equations
Torque
Thermodynamics
Neural networks
Decomposition
Controllers

Keywords

  • marine diesel engine
  • marine engineering
  • thermodynamic energy
  • variable geometry turbine

Cite this

Xiros, N., & Theotokatos, G. (2011). Improved transient control of a two-stroke marine diesel engine with variable geometry turbine. 85-94. Paper presented at ASME-Internal Combustion Engine Division (ICED), 2011 Fall Technical Conference, Morgantown, United States. https://doi.org/10.1115/ICEF2011-60199
Xiros, Nikolaos ; Theotokatos, Gerasimos. / Improved transient control of a two-stroke marine diesel engine with variable geometry turbine. Paper presented at ASME-Internal Combustion Engine Division (ICED), 2011 Fall Technical Conference, Morgantown, United States.10 p.
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title = "Improved transient control of a two-stroke marine diesel engine with variable geometry turbine",
abstract = "In this work, the cycle-mean-value approach to marine engine process simulation is considered. At first, a basic principles model is employed where the engine crankshaft and turbocharger shaft speeds are obtained by integration of the angular momentum conservation differential equations. Any other engine variable can then be obtained by solving a set of nonlinearly-coupled, algebraic equations, corresponding to energy and mass conservation through the engine. Nonlinear data analysis is then performed on this process model. By approximating the torque maps, generated by the thermodynamic basic principles model, with neural nets, explicit functional relationships are obtained. Identification of the power-plant operating regimes through linearization and decomposition is finally performed. In effect, a supervisory power-plant controller structure, applicable to real-time control and diagnostics, is proposed, incorporating the nonlinear state-space description of the plant.",
keywords = "marine diesel engine , marine engineering, thermodynamic energy, variable geometry turbine",
author = "Nikolaos Xiros and Gerasimos Theotokatos",
year = "2011",
doi = "10.1115/ICEF2011-60199",
language = "English",
pages = "85--94",
note = "ASME-Internal Combustion Engine Division (ICED), 2011 Fall Technical Conference, ; Conference date: 02-10-2011 Through 05-10-2011",

}

Xiros, N & Theotokatos, G 2011, 'Improved transient control of a two-stroke marine diesel engine with variable geometry turbine' Paper presented at ASME-Internal Combustion Engine Division (ICED), 2011 Fall Technical Conference, Morgantown, United States, 2/10/11 - 5/10/11, pp. 85-94. https://doi.org/10.1115/ICEF2011-60199

Improved transient control of a two-stroke marine diesel engine with variable geometry turbine. / Xiros, Nikolaos; Theotokatos, Gerasimos.

2011. 85-94 Paper presented at ASME-Internal Combustion Engine Division (ICED), 2011 Fall Technical Conference, Morgantown, United States.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Improved transient control of a two-stroke marine diesel engine with variable geometry turbine

AU - Xiros, Nikolaos

AU - Theotokatos, Gerasimos

PY - 2011

Y1 - 2011

N2 - In this work, the cycle-mean-value approach to marine engine process simulation is considered. At first, a basic principles model is employed where the engine crankshaft and turbocharger shaft speeds are obtained by integration of the angular momentum conservation differential equations. Any other engine variable can then be obtained by solving a set of nonlinearly-coupled, algebraic equations, corresponding to energy and mass conservation through the engine. Nonlinear data analysis is then performed on this process model. By approximating the torque maps, generated by the thermodynamic basic principles model, with neural nets, explicit functional relationships are obtained. Identification of the power-plant operating regimes through linearization and decomposition is finally performed. In effect, a supervisory power-plant controller structure, applicable to real-time control and diagnostics, is proposed, incorporating the nonlinear state-space description of the plant.

AB - In this work, the cycle-mean-value approach to marine engine process simulation is considered. At first, a basic principles model is employed where the engine crankshaft and turbocharger shaft speeds are obtained by integration of the angular momentum conservation differential equations. Any other engine variable can then be obtained by solving a set of nonlinearly-coupled, algebraic equations, corresponding to energy and mass conservation through the engine. Nonlinear data analysis is then performed on this process model. By approximating the torque maps, generated by the thermodynamic basic principles model, with neural nets, explicit functional relationships are obtained. Identification of the power-plant operating regimes through linearization and decomposition is finally performed. In effect, a supervisory power-plant controller structure, applicable to real-time control and diagnostics, is proposed, incorporating the nonlinear state-space description of the plant.

KW - marine diesel engine

KW - marine engineering

KW - thermodynamic energy

KW - variable geometry turbine

U2 - 10.1115/ICEF2011-60199

DO - 10.1115/ICEF2011-60199

M3 - Paper

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ER -

Xiros N, Theotokatos G. Improved transient control of a two-stroke marine diesel engine with variable geometry turbine. 2011. Paper presented at ASME-Internal Combustion Engine Division (ICED), 2011 Fall Technical Conference, Morgantown, United States. https://doi.org/10.1115/ICEF2011-60199