Compress natural gas composite tank for vehicles.

The present invention relates to a reinforced compressed natural gas (CNG) composite tank and a method making the same for direct injection in vehicle systems at high pressure wherein the method of making a reinforced CNG composite tank having a desired tank configuration with a cylindrical protuberance on one end of the tank and bossless dome section on the other end, comprises: (a) layering the middle of the dome section of the back end of the liner with layers of carbon fibers; (b) overlayering the liner with a tow of carbon fibers in epoxy resin by winding process; and (c) heating the composite layer of the composite tank by curing process in a mobile oven. The composite tank provided is constructed from aluminum alloy material based liner reinforced with carbon fiber/ epoxy composite.

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