Inhaltszusammenfassung

The number of motor vehicles powered by internal combustion of natural gas is exponentially growing within the last years. As a result, further development impact has to be concentrated on fuel systems for compressed natural gas (CNG) powered cars. Until today CNG systems – e.g., in passenger cars – are not fully integr ated into the development process of motorcars as conducted by vehicle or engine manufacturers. One of th...The number of motor vehicles powered by internal combustion of natural gas is exponentially growing within the last years. As a result, further development impact has to be concentrated on fuel systems for compressed natural gas (CNG) powered cars. Until today CNG systems – e.g., in passenger cars – are not fully integr ated into the development process of motorcars as conducted by vehicle or engine manufacturers. One of the essential parts of those systems is the mechanical pressure regulator which 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 depending on the system. As a point of departure this paper presents modelling and simulation of entire fuel systems for CNG-powered engines. Thereto all particular components of such a system are modelled, simulated and verified by comparison of measured and simulated results. In the next step the modelled state of the art mechanical pre ssure regulator is substituted by new developed mechatronical devi ces and the space of improvement for different versions of those is pointed out based on simulation. Subsequently the realized mechatronical pressure regulator with the major potential for further development is practically investigated on a test rig at Trier Univer sity of Applied Sciences. Experiments and Simulations are aligned to validate the new device. The main advantages that accrue by using a mechatronical pressure regulator instead of an ordinary mechanical one are demonstrated. » weiterlesen» einklappen

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Klassifikation

DDC Sachgruppe:
Technik