*3.2. Transient Simulations*

The findings in the steady-state simulations section (see the Results Section) demonstrated that a model fitted with a motor-generator and a turbine 10% smaller than the original could provide energy harvesting and thermal efficiency gain across the speed/load map of the engine. The transient behaviour of the model with this configuration, an original size compressor and increased pre-turbine pressures was tested by performing three different types of simulations, as shown below:


The purpose of the transient study was to reveal the response time improvement under different levels of energy provision to the compressor, as well as to perform an energy balance review. This is required in order to identify whether the e-turbocharger can operate without energy consumption from the engine and if any excess on the total energy generated.
