Vol 8, No 1 (2017) > Mechanical Engineering >

Characteristic of LPG Compositions in the Fuel Line during Discharging Process

Muji Setiyo, Sudito Soeparman, Nurkholis Hamidi, Slamet Wahyudi

 

Abstract:

Research and development
activities on Liquefied Petroleum Gas (LPG) vehicles have increased LPG engine
performance to that of gasoline engines. LPG evaporation in the fuel
system also has a potential cooling effect that can be taken advantage of. The results
from previous studies, however, do not explain the level of fuel in the tank at the time of data
collection. LPG is a mixture of several molecules which have different
properties. This paper presents an investigation of LPG composition
characteristics in the fuel line during the discharging process. Samples were
taken periodically on the fuel line by special gas syringes. Afterwards, the
samples were injected into the Gas Chromatography-Mass Spectrometry (GC-MS)
device. This series of tests, which was conducted on lengthy LPG
tanks, showed that
the propane and butane 2-methyl molecules are unevenly dispersed during the discharging of the
tank. However, this study found that a change in LPG composition during the discharging process does not have
significant influence on the energy delivery and the potential cooling effect.

Keywords: Cooling effect; Discharging process; Energy content; LPG composition

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