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Methodology for Determining the Dynamic characteristics of a Turbocharger Pneumatic Actuator
Hálek, Dominik ; Kocman, František (referee) ; Novotný, Pavel (advisor)
This diploma thesis is dealing with design of Methodology for Determining the Dynamic characteristics of a Turbocharger Pneumatic Actuator. Pneumatic Actuator is used as a control mechanism in turbocharged internal combustion engines, which affects the engine performance, efficiency and fuel consumption. Main aim of this thesis is to develop a systematic comprehensive procedure for collecting and analysing measured data of dynamic behaviour of this actuator. In the first part of the thesis, an experimental method is designed and implemented to measure the data required to analyse the dynamics of the actuator at different variations of pressure, displacement and frequency settings. A measurement chain with appropriate sensors is built and a software environment for data acquisition and storage is developed. In the second part of the thesis, the experimentally measured data are evaluated using mathematical model in Matlab software environment to extract stiffness and damping values from measured data and determine their dependence on frequency, pressure and displacement.
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