Engine Encapsulation for Increased Fuel Efficiency of Road Vehicles
Doctoral thesis, 2017
powertain cooling systems
thermal engine encapsulation
3D CFD simulations
Chalmers, Applied Mechanics, Vehicle Engineering and Autonomous Systems
Study of Software Integration for Transient Simulation of Future Cooling System for Heavy Truck Application
SAE International, SAE Technical Paper 2014-01-0653, 2014, doi:10.4271/2014-01-0653.,; (2014)
Paper in proceedings
Numerical Investigation of Natural Convection in a Simplified Engine Bay
SAE Technical Papers,; (2016)
Minovski, B., Andric, J., Lofdahl, L. and Gullberg, P., ”Direct Coupled 1D-3D Approach for Simulations of Buoyancy-driven Heat Transfer in a Simplified Engine Bay”
Minovski, B., Andric, J., Lofdahl, L. and Gullberg, P., ”A Numerical Investigation of Thermal Engine Encapsulation Concept for a Passenger Vehicle and its Effect on Fuel Consumption ”
As we know, all ICEs contain engine oil, which lubricates their parts during operation. It costs the engine additional energy to overcome the resistance due to the viscosity of engine oil. Like many other fluids, engine oil becomes thicker at low temperatures. This also leads to a big increase of the unwanted engine friction and makes the engine consume more fuel when cold.
Thermal engine encapsulation is a combination of shells, mounted around the engine, that insulate it from the cold environment and keep it warm for a long time after we turn it off. This way it is more likely that the engine will be warm and efficient next time we start it.
To design an engine encapsulation is a complex engineering task, which requires knowledge of the energy transport through the entire powertrain of the vehicle. My work offers a strategy on how to calculate and predict the benefits of any engine encapsulation design on the potential fuel savings for a specific vehicle application.
Other Mechanical Engineering
Areas of Advance
Doktorsavhandlingar vid Chalmers tekniska högskola. Ny serie: 4317
Chalmers University of Technology
HA2, Hörsalsvägen 4, Göteborg
Opponent: Dr.-Ing. Burkhard Hupertz, Ford of Europe GmbH, Germany