Steady-state warm calibration of the PHOENICE prototype engine was carried out at relevant engine load points on IFP Energies nouvelles‘s engine test bench. A specific sequential methodology of optimization has been set to achieve the lowest fuel consumption while minimizing the pollutant emissions. This calibration has been performed on ~40 operating points: operating points defined as representative operating points, specific operating points to achieve the highest possible gross indicated efficiency and points in full load conditions.
The target of Gross indicated efficiency = 47% was achieved.
A comparison with the reference engine shows a gain of 5 – 15% of BTE. The modifications made to the base engine (high compression ratio, injection system, E-Turbo, EGR and air dilution, Swumble™) allowed to greatly increase the BTE.