Start: 09. 2013
End: 09.2016
Fordonsstrategisk Forskning och Innovation
6842 kkr
Blago Minovski
Supervisor: Prof. Lennart Löfdahl
Department of Applied Mechanics
Division of Vehicle Engineering and Autonomous Systems
1 2014-08-26

Background

Higher requirements for energy-efficient and quiet vehicles.

Demands for shorter lead times implicate the design process in a way that noise levels, coolant and cooling air flows, etc. must be decided already at concept stage.
Blago Minovski
2 2014-10-09

Concept

Engine encapsulation retains heat in the powertrain

Increases probability of high initial oil temperature at next engine start

Reduces air-bourne noise

Optimized engine cooling and vehicle thermal management by implementation of active means of temperature and flow control in the engine bay.
Blago Minovski
3 2014-10-09

Aim

To develop a method and a software toolbox for evaluation of engine encapsulation effectiveness
– Cooling system temperatures for continuous drive cycles
– Hot spots (caused by radiation)
– Prediction of noise emissions
Blago Minovski
4 2014-10-09

Current Status
Developed and validated a detailed 1-D model of the cooling system coupled with engine model that predicts important cooling system parameters with continuous signal input.
Blago Minovski
5 2014-10-09

Current work
Implementation of three-dimentional tools to increase the accuracy of simulation and prediction
Blago Minovski
6 2014-10-09

Future work

Extend the 1-D model to simulate the engine oil temperature variation after shutdown

Thermal models of encapsulation structures

Propose an engine encapsulation concept with active control and analyze it with the developed tool

Work out radiation and acoustic models and correlate simulation results to test results for the selected concept
Blago Minovski
7 2014-10-09

Publications

"Study of Software Integration for Transient Simulation of Future Cooling
System for Heavy Truck Application," SAE Technical Paper 2014-01-
0653, 2014, doi:10.4271/2014-01-0653.
 “An improved method for transient simulations of cooling systems with non-uniform thermal and flow boundaries” SAE Technical Paper
Blago Minovski
8 2014-10-09