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Encapsulation of engine bay for active thermal control and lower noise emissions

Encapsulation of engine bay for active thermal control and lower noise emissions. Blago Minovski Supervisor: Prof. Lennart Löfdahl Department of Applied Mechanics Division of Vehicle Engineering and Autonomous Systems. Start: 09. 2013

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Encapsulation of engine bay for active thermal control and lower noise emissions

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  1. Encapsulation of engine bay for active thermal control and lower noise emissions Blago Minovski Supervisor: Prof. Lennart Löfdahl Department of Applied Mechanics Division of Vehicle Engineering and Autonomous Systems Start: 09. 2013 End: 09.2016Fordonsstrategisk Forskning och Innovation6842 kkr

  2. 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

  3. 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

  4. 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

  5. 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

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

  7. 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

  8. 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

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