Optimal GenSet: Model Creation For Optimization
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Examensarbete för masterexamen
Modellbyggare
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This project is carried out in collaboration between Volvo Penta and Chalmers University
of Technology. This is a master’s thesis and the report outlines the overall
work carried out by two Product Development students at Chalmers University of
Technology. Volvo Penta is a company within the Volvo Group and manufactures
products within the marine-and-industry segment. A generator set (GenSet) with
a diesel engine, which the project focuses on, is necessary for a wide range of applications,
for instance at hospitals or in mines. The reliability of the power source
is of great importance whether it is for a constant supply or a back-up generator
supplying energy to vital functions in the society.
This project was initialized since one of the most challenging problems right now is
the increase in global warming, which emissions from diesel engines contribute to.
Volvo Group has its own targets that are within the line of the Paris Agreement,
where Volvo Group has committed to the Science Based Targets initiative. Volvo
Penta has set a target to absolute reduce greenhouse gases by 37.5% by 2034 and
the overall goal for Volvo Group is to have net-zero greenhouse gas emissions by
2040. By constructing a model and methodology that enables Volvo Penta to find
the most promising improvements for a GenSet engine, with the cost taken into
account, this project can help Volvo Penta to lower the CO2 emissions.
The report showed the workflow for concept selection by constructing a model and
methodology. The course of action followed: technology research, screening technologies
by using an elimination matrix, methodology research, model creation that
combines technologies for improving the efficiency of the engine by using Matlab and
Simulink, sensitivity analysis and multi-criteria decision-making matrix, to finally
have three concepts. The final concepts were visualized.
By using the created model, the three most promising combinations of technologies
could be selected. The first one included turbo compound, continuously varying
transmission, cylinder deactivation and thermal barrier coating. The second one
contained turbo compound, continuously varying transmission, dynamic skip fire
and thermal barrier coating. The third one consisted of turbo compound, continuously
varying transmission, cylinder deactivation, thermal barrier coating and
variable compression ratio. The increased efficiency respectively were 29.4%, 29.6%
and 29.5%. The cost for the additional technologies was approximately between
66300-68300 SEK.
Beskrivning
Ämne/nyckelord
GenSet, Diesel Engine, Volvo Penta, Optimization, Concept Selection