Thesis supervisor: Knaup Jan
Location of studies (in Hungarian): Széchenyi István University Abbreviation of location of studies: SZE
Description of the research topic:
For the development of the exhaust system of an internal combustion engine it is necessary to ensure that in later use of the automobile the powertrain of the car can meet the emission legislation for the market the automobile is dedicated to.
For north american region for example this means that the manufacturer of the car needs to ensure that the car meets the emission limits for 150.000 miles or 15 years.
Therefore it is indispensable that all components of the emission aftertreatment of a car are ensured to work properly for at least this period of time and in addition are able to be controlled by the on board diagnosis which is also part of the legislation.
The emission aftertreatment system needs to be aged representatively to future usage by the customer to ensure proper certification of the car.
Therefore it is needed to evaluate at the very beginning of the development process if all of the components of the exhaust system are able to work properly of the whole lifespan of the exhaust system. The components are e.g.: catalysts, particulate filters, lambda sensors, particulate sensors, pressure sensors, temperature sensors.
For this evaluation a 3-D-CFD-gas-flow-simulation of the exhaust aftertreatment system for the whole operating range of the system is the most important method to approximate the systems behaviour over it’s lifespan.
To be as accurate as possible with this 3-D-CFD-simulation the exact determination of the turbocharger flow pattern ist needed.
This research topic deals with the development of a method to determine the turbocharger flow pattern by the help of particle image velocimetry, engine test bench, turbocharger hot- and cold-gas-test-bench to be able to generate a high quality input database for the 3-D-CFD-simulation in very early stage of the concept development of an internal combustion engine.
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