Model for simulation based investigations of fuel systems for CNG powered engines

The pressure regulator is one of the essential parts of Compressed Natural Gas (CNG) powered engines. It reduces the storage pressure (up to 250 bar) from the tank system to a near constant outlet pressure of approximately 2 up to 10 bars within the fuel injection system. A standard mechanical pressure regulator for CNG-powered engines was investigated theoretically and practically, to generate fundamental data for the scientific project described in this paper. Thereto the particular components of such a system were modelled, simulated and verified by comparison of measured and simulated results. Experiments and Simulations are aligned here to validate the model.