Simulation of exhaust gas energy recovery system using turbocompounding for a motorcycle engine

Abstract

The project aims to recover the energy from the waste exhaust gas and utilize it for application such as battery charging of hybrid electric vehicles. The concept used for energy recovery is electric turbo-compounding which encompasses a turbine integrated with the exhaust manifold of an automobile. The exhaust gases are allowed to expand through the surface of blades of the turbine imparting the energy which can be seen by rotational action of impeller. This motion is captured by a motor generative unit which then produces electric power. The performance of the exhaust gas energy recovery system is simulated on a 390cc motorcycle engine using MATLAB Simulink. The engine was simulated using standard practical low loading and high loading drive cycles such as FTP72, FTP75 (city driving cycles) and US06 (highway driving cycle). Results from the simulation indicate a considerable amount of energy recovery from the exhaust gases of an engine under the above-mentioned driving cycles. Considering the amount of energy recovered, the next focus is to optimize the current system.