Design and Assembly of an EGR-circuit for an MD11 Research Engine
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Typ
Examensarbete för kandidatexamen
Bachelor Thesis
Bachelor Thesis
Program
Publicerad
2017
Författare
Bjärehall, Emil
Burman, Tove
Elamin, Elamin Hamid
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
Volvo Group, North America will be performing combustion research in conjunction with the University of Michigan to increase the efficiency of a new engine being developed. This research will be conducted with an 11 L static engine (model MD11) in a test cell that will undergo a variety of different tests to advance industry knowledge of combustion, engine design, and engine efficiency. One of the major components of diesel engines is the exhaust system. Volvo assigned the construction and design of an exhaust gas recirculation (EGR) system, for use in a Michigan test cell, to engineering students from Penn State and Chalmers Universities. The exhaust gas recirculation system on commercial diesel engines reduce the NOx-emissions. This is achieved by recirculating a portion of exhaust gas into the intake manifold. The objective of this project was for the student teams at Penn State and Chalmers to design and physically assemble portions of the EGR system with the support of numerical calculations to prove that the system would operate as intended. The team was responsible for sourcing components and proper system connections and outfitting specific sensors to the system to ensure effective monitoring of the engine during testing. The Chalmers team was given thermodynamic data from a similar system in Gothenburg, Sweden, to calculate key parameters needed to understand the flow of exhaust from the engine in Michigan. Calculations that partly aided the system design. The Chalmers students also consulted suppliers about potential appropriate electrically actuated control valves needed to control the flow in the system. The Penn State students were responsible for the physical design, connections and the system components. The students fully designed the system using computer automated design software, and ran thermodynamic calculations to verify that the system would theoretically operate as intended. The team effectively sourced, purchased, and assembled the main components of the EGR system.
Beskrivning
Ämne/nyckelord
Transport , Hållbar utveckling , Maskinteknik , Farkostteknik , Transport , Sustainable Development , Mechanical Engineering , Vehicle Engineering