Advanced

Modeling and Simulation of the Cooling System in Heavy Duty Trucks

Ekstedt, Edward (2016)
Department of Automatic Control
Abstract
This MSc thesis covers the development of a Modelica model of an engine liquid cooling system for the trucks manufactured by MAN Truck & Bus AG. The mathematical assumptions used for transcribing existing models are described and the reasoning behind the modeling process is provided.
The separate component models are validated with two sets of input signals. Primarily with a dynamic, transient cycle recorded at a testing track. Secondarily, they are also validated with steady state measurements which were part of an experiment conducted at MAN’s test bench.
Furthermore, the modeling process of the heat exchanger stack at the front of the vehicle is presented together with points about the boundary conditions of the cooling air. These... (More)
This MSc thesis covers the development of a Modelica model of an engine liquid cooling system for the trucks manufactured by MAN Truck & Bus AG. The mathematical assumptions used for transcribing existing models are described and the reasoning behind the modeling process is provided.
The separate component models are validated with two sets of input signals. Primarily with a dynamic, transient cycle recorded at a testing track. Secondarily, they are also validated with steady state measurements which were part of an experiment conducted at MAN’s test bench.
Furthermore, the modeling process of the heat exchanger stack at the front of the vehicle is presented together with points about the boundary conditions of the cooling air. These components are then integrated with each other in a model of the entire cooling system, yielding acceptable simulation results.
Additionally, the simulation performance is evaluated and different integration algorithms are compared and tested, to investigate the possibility of applying the model to real time interfaces. It shows that the model is stable for fixed-step algorithms with small enough step sizes, and that HIL-simulation is possible. (Less)
Please use this url to cite or link to this publication:
author
Ekstedt, Edward
supervisor
organization
year
type
H3 - Professional qualifications (4 Years - )
subject
report number
TFRT-6021
ISSN
0280-5316
language
English
id
8894276
date added to LUP
2016-12-16 13:56:06
date last changed
2016-12-16 13:56:06
@misc{8894276,
  abstract     = {This MSc thesis covers the development of a Modelica model of an engine liquid cooling system for the trucks manufactured by MAN Truck & Bus AG. The mathematical assumptions used for transcribing existing models are described and the reasoning behind the modeling process is provided. 
 The separate component models are validated with two sets of input signals. Primarily with a dynamic, transient cycle recorded at a testing track. Secondarily, they are also validated with steady state measurements which were part of an experiment conducted at MAN’s test bench.
 Furthermore, the modeling process of the heat exchanger stack at the front of the vehicle is presented together with points about the boundary conditions of the cooling air. These components are then integrated with each other in a model of the entire cooling system, yielding acceptable simulation results.
 Additionally, the simulation performance is evaluated and different integration algorithms are compared and tested, to investigate the possibility of applying the model to real time interfaces. It shows that the model is stable for fixed-step algorithms with small enough step sizes, and that HIL-simulation is possible.},
  author       = {Ekstedt, Edward},
  issn         = {0280-5316},
  language     = {eng},
  note         = {Student Paper},
  title        = {Modeling and Simulation of the Cooling System in Heavy Duty Trucks},
  year         = {2016},
}