PEMODELAN PENURUN TEKANAN UNTUK KENDARAAN BERBAHAN BAKAR GAS DENGAN SIMULASI 3-D (STUDI KASUS : KORELASI PERUBAHAN POSISI PADA PENURUN TEKANAN TERHADAP TEKANAN DIM LAJU ALIRAN MASSA )

• Main Author: Burhanuddin Sitorus , Tulus
• Format: Theses
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/5178
• Institution: Institut Teknologi Bandung

<b>Abstract :</b><p align=\"justify\"> <br /> Compressed Natural Gas (CNG) as a fuel is clean, economical and has been in use worldwide to power vehicles. There are over 1,200,000 vehicles running on CNG in the world Existing vehicles can use CNG by installing a bi fuel conversion kit. A series of researches about characteristic of stability and performance of conversion kits shows that imported conversion kits manufactured by several vendors that are used by public in Indonesia still need some improvement in their design. The conversion kits consist of CNG main tank, mixer and pressure regulator. In this research simulated pressure regulator which have three steps restriction which the change of valves position is influenced by pressure inlet and pressure in the chambers. The simulation of fluid flow in pressure regulator can be modelled with the aide of FIRE v70b P13. In this modelling were done variation of inlet and outlet position. The varying made which aim to observe correlation of the change of pressure and outlet mass flow with position changing. Besides, were done varying outlet diameter of pressure regulator, outlet pressure and the change of inlet pressure. The results show that the change of inlet and outlet position were done not shows significant changing both pressure in the chambers and outlet mass flow from pressure regulator.