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Energy Recovery from Exhaust Gases in an Electric-assisted Turbocharger for Hybrid Vehicles
Calábek, Daniel ; Kudláček, Petr (oponent) ; Novotný, Pavel (vedoucí práce)
The content of this diploma thesis was the suitability of using a turbocharger with an associated motor-generator for selected types of hybrid vehicles and the subsequent analysis of energy flows for a given engine application. The approach presented in the work includes a thermodynamic model of the engine in the GT-SUITE program in which the possibilities of energy flows when changing the size of the turbine and compressor wheel of a turbocharger are investigated. The approach is applied to a turbocharger with a variable geometry which is associated with motor-generator for a delivery vehicle, where it is possible to recover energy from the turbocharger at different engine loads. At the same time, the possibilities of reducing fuel consumption at certain operating points of the engine were identified.
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Exhaust Gas Energy Recuperation in a Commercial Vehicle Diesel Engine
Šroba, Roman ; Janoušek, Michal (oponent) ; Vondrák, Adam (vedoucí práce)
The scope of this thesis investigates value added by a turbocharger with an associated motor-generator unit to a diesel engine used by a commercial vehicle. A thermodynamic model of the engine was prepared in GT-SUITE software. Case studies were primary focused on a reduction of specific fuel consumption as well as a nitrogen oxides production using an energy recuperation of exhaust gas. Furthermore, there are described potential benefits of using an electric assistance in order to increase an exhaust gas temperature during a steady state engine operation. Additionally, there is an investigation of potential benefits of a turbocharger assistance in a transition engine mode operating during rapid acceleration of the vehicle. The results of individual analysis will be taken into account for a selection of turbocharger regarding specific engine implementation. The results of simulation suggest that it is possible to lower specific fuel consumption, production of nitrogen oxides, as well as accelerate turbocharger response.
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Energy Recovery from Exhaust Gases in an Electric-assisted Turbocharger for Hybrid Vehicles
Calábek, Daniel ; Kudláček, Petr (oponent) ; Novotný, Pavel (vedoucí práce)
The content of this diploma thesis was the suitability of using a turbocharger with an associated motor-generator for selected types of hybrid vehicles and the subsequent analysis of energy flows for a given engine application. The approach presented in the work includes a thermodynamic model of the engine in the GT-SUITE program in which the possibilities of energy flows when changing the size of the turbine and compressor wheel of a turbocharger are investigated. The approach is applied to a turbocharger with a variable geometry which is associated with motor-generator for a delivery vehicle, where it is possible to recover energy from the turbocharger at different engine loads. At the same time, the possibilities of reducing fuel consumption at certain operating points of the engine were identified.
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Exhaust Gas Energy Recuperation in a Commercial Vehicle Diesel Engine
Šroba, Roman ; Janoušek, Michal (oponent) ; Vondrák, Adam (vedoucí práce)
The scope of this thesis investigates value added by a turbocharger with an associated motor-generator unit to a diesel engine used by a commercial vehicle. A thermodynamic model of the engine was prepared in GT-SUITE software. Case studies were primary focused on a reduction of specific fuel consumption as well as a nitrogen oxides production using an energy recuperation of exhaust gas. Furthermore, there are described potential benefits of using an electric assistance in order to increase an exhaust gas temperature during a steady state engine operation. Additionally, there is an investigation of potential benefits of a turbocharger assistance in a transition engine mode operating during rapid acceleration of the vehicle. The results of individual analysis will be taken into account for a selection of turbocharger regarding specific engine implementation. The results of simulation suggest that it is possible to lower specific fuel consumption, production of nitrogen oxides, as well as accelerate turbocharger response.
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