1) The document compares the properties of natural gas for vehicles (NGV) and liquid petroleum gas (LPG) as fuels. NGV has a higher octane rating and cetane number than LPG. 2) NGV engines can be modified from gasoline or diesel engines more easily than LPG engines. However, LPG is cheaper and more readily available than NGV in most areas. 3) The document provides contact information for websites with additional information on NGV and LPG properties and infrastructure.

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LPG NGV
S&E NEWS
2 LPG
NGV
NGV (Natural Gas for Vehicles) LPG ( Liquid Petroleum Gas)
(Compressed Natural Gas : CNG)
NGV (C1) LPG (C3)
(C4)
5-15% NGV
2-9.5%
650 LPG 2%
480
NGV
NGV LPG LPG NGV
LPG NGV
: http://pttweb2.pttplc.com
F .( .71280-71286) 1

2. 1. 90
45-55
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( )
3.
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5. /
6. ( )
7.
: www.vcharkarn.com
F .( .71280-71286) 2