More than half of the fuel’s energy supplied to an internal combustion engine is lost as heat where the largest share is high exhaust energy. The goal of the project is to study different concepts for heat recovery for both light duty and heavy duty vehicles. The project is performed as an integrated effort with participants from all the three Swedish competence centers in Internal Combustion Engines. The work split between the universities is as follows:
- CERC (Chalmers), system simulation and experiments, working fluids and expanders for Rankine cycles
- KCFP (Lund), heat exchangers for Rankine, and simulation/experiments of Humid Air Motor (HAM)
- CCGEx (KTH), system simulation for turbo compounding
The objective of the waste-heat recovery project at Chalmers is to develop and validate a 1D model of a waste-heat recovery system based on a Rankine cycle. This model can be used as a tool to improve engine performance and show the fuel saving potential of future waste-heat recovery systems. The model will be validated based on experimental data, which is obtained from a full-scale test bench of the system attached to a Volvo D13 heavy-duty engine in the combustion-engine laboratory.