Engine Electrified Cooling System: System and Control Design in Simulation Environment
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Typ
Examensarbete för masterexamen
Program
Automotive engineering (MPAUT), MSc
Publicerad
2019
Författare
Abhiskek, Makam
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
A cooling system is a vital part of any combustion engine. The cooling system
helps maintain the temperature of the engine without allowing it to reach extreme
values. A part of the power produced by the engine is used for the cooling system
operations. Any savings in the energy consumption of the cooling system is used to
improve the fuel efficiency of the vehicle.
This master thesis deals with the development of an electric cooling system. This
is done by replacing conventional parts of the cooling system with electric variants.
Electrifying the cooling system creates additional degrees of freedom like control of
pump speed and fan speed which are addressed by developing a control system and
generating strategies to operate the components of the cooling system in the most
energy efficient manner.
The product of this thesis is a methodology to simulate the electric cooling system
and its control system using PID controllers in Simulink. While tuning the
controllers to perform as required was a challenging task, a lot of time and effort
was invested in improving the robustness of the existing system model to yield good
results.
The developed methodology can be used to optimise the cooling system in a conventional
vehicle, as well as, be adapted to the development of cooling systems in
hybrid or electric vehicles. The recuperated energy while braking can be utilised to
power the cooling system hence improving the performance and range of the vehicle.
Beskrivning
Ämne/nyckelord
Electric cooling system , Control system , PID controllers , Electric pump , Electric fan , Thermostat , Three-way valve