Date of Award


Publication Type

Master Thesis

Degree Name



Mechanical, Automotive, and Materials Engineering

First Advisor

Ting, David


CAC; Charge Air Cooling; EGR; Vehicle fuel consumption




In recent years, stricter emissions regulations have been applied to reduce effects on the environment. Car manufacturers have to comply with these rules in order to sell cars on the market. Different solutions are researched to reduce fuel consumed; in this project a downsized engine has been considered. Effects of different EGR rate and ACT and their impact on the cooling system are analyzed. Having a higher amount of exhaust gas recirculated at a low temperature is affecting the power request on the cooling system, directly coupled to the engine. The latter should be operated at a higher load burning consequently more fuel. In this project, through engine dyno tests and 1D simulations, the increase in fuel consumption will be calculated and a procedure to reduce it will be developed. Final results showed an improvement in fuel economy up to 5% for certain conditions, without changing anything in the hardware.