Enthalpy Based Boost Pressure Control
A turbo system is driven by the excess energy in the exhaust gases. As a result, variation in exhaust temperature cause variations in boost pressure. By using the information about the available exhaust energy in the turbo controller directly through a feedforward controller, an unexpected varia...
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2011
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ndltd-UPSALLA1-oai-DiVA.org-liu-706822013-01-08T13:50:44ZEnthalpy Based Boost Pressure ControlengEntalpibaserad LaddtrycksstyrningHilding, EmilLinköpings universitet, Fordonssystem2011TurboControllerModel basedMVEMWastegateVariable geometry turbineTurboRegulatorModellbaseradMedelvärdesmotorTECHNOLOGYTEKNIKVETENSKAPA turbo system is driven by the excess energy in the exhaust gases. As a result, variation in exhaust temperature cause variations in boost pressure. By using the information about the available exhaust energy in the turbo controller directly through a feedforward controller, an unexpected variation in turbo boost can be avoided. A model based controller is developed that calculates the desired turbine power from the boost pressure reference and then, by observing the available exhaust energy, controls the generated turbine power to match the desired power. A Mean Value Engine Model has been used to make simulation with the developed controller implemented. Steps between different boost pressure references are used to evaluate controller performance. Tests in a car have also been made to make sure the simulation results are consistent in a real environment. Turbosystem drivs av överskottsenergin i motorns avgaser. Dettainnebär att temperaturvariationer i avgaserna orsakar variationer igenererad turbineffekt och därmed ökat laddtryck från turbosystemet.Används informationen om den tillgängliga energin i avgaserna när manstyr turbinen så kan man motverka oväntade laddtrycksförändringar. Idenna rapport har en modellbaserad turboregulator med en framkopplingsom beräknar en önskad turbineffekt från givet referenstryckutvecklats. Sedan tas en styrsignal fram till turbinen som, genom attanvända informationen om den observerade energin i avgaserna, matcharden önskade turbineffekten. En model av en medelvärdesmotor haranvänds för att validera prestandan i regulatorn via stegsvar mellanolika referenstryck. Det har även utförts tester i bil för att avgöraom resultatet blir detsamma under verkliga förhållanden. Student thesisinfo:eu-repo/semantics/bachelorThesistexthttp://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-70682application/pdfinfo:eu-repo/semantics/openAccess |
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NDLTD |
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English |
format |
Others
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Turbo Controller Model based MVEM Wastegate Variable geometry turbine Turbo Regulator Modellbaserad Medelvärdesmotor TECHNOLOGY TEKNIKVETENSKAP |
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Turbo Controller Model based MVEM Wastegate Variable geometry turbine Turbo Regulator Modellbaserad Medelvärdesmotor TECHNOLOGY TEKNIKVETENSKAP Hilding, Emil Enthalpy Based Boost Pressure Control |
description |
A turbo system is driven by the excess energy in the exhaust gases. As a result, variation in exhaust temperature cause variations in boost pressure. By using the information about the available exhaust energy in the turbo controller directly through a feedforward controller, an unexpected variation in turbo boost can be avoided. A model based controller is developed that calculates the desired turbine power from the boost pressure reference and then, by observing the available exhaust energy, controls the generated turbine power to match the desired power. A Mean Value Engine Model has been used to make simulation with the developed controller implemented. Steps between different boost pressure references are used to evaluate controller performance. Tests in a car have also been made to make sure the simulation results are consistent in a real environment. === Turbosystem drivs av överskottsenergin i motorns avgaser. Dettainnebär att temperaturvariationer i avgaserna orsakar variationer igenererad turbineffekt och därmed ökat laddtryck från turbosystemet.Används informationen om den tillgängliga energin i avgaserna när manstyr turbinen så kan man motverka oväntade laddtrycksförändringar. Idenna rapport har en modellbaserad turboregulator med en framkopplingsom beräknar en önskad turbineffekt från givet referenstryckutvecklats. Sedan tas en styrsignal fram till turbinen som, genom attanvända informationen om den observerade energin i avgaserna, matcharden önskade turbineffekten. En model av en medelvärdesmotor haranvänds för att validera prestandan i regulatorn via stegsvar mellanolika referenstryck. Det har även utförts tester i bil för att avgöraom resultatet blir detsamma under verkliga förhållanden. |
author |
Hilding, Emil |
author_facet |
Hilding, Emil |
author_sort |
Hilding, Emil |
title |
Enthalpy Based Boost Pressure Control |
title_short |
Enthalpy Based Boost Pressure Control |
title_full |
Enthalpy Based Boost Pressure Control |
title_fullStr |
Enthalpy Based Boost Pressure Control |
title_full_unstemmed |
Enthalpy Based Boost Pressure Control |
title_sort |
enthalpy based boost pressure control |
publisher |
Linköpings universitet, Fordonssystem |
publishDate |
2011 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-70682 |
work_keys_str_mv |
AT hildingemil enthalpybasedboostpressurecontrol AT hildingemil entalpibaseradladdtrycksstyrning |
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1716530440721924096 |