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Gas Bag Vehicles

Gas Bag Vehicles
Wood gas cars were not only the solution to the short supply of Gasoline in World war I and II. The expense of these vehicles was less because it is made from coal, not oil. It was a gas that is rich in hydrogen and carbon monoxide. It is the generator of wood gas that is called a gasifier that is used in a wood gas vehicle. Vehicles run with natural gas and fuel were very popular in the early 1990s in many parts of Europe and America. Natural gas was not taken from petroleum which becomes very dangerous during the two world wars. Two other unusual sources are wood and coal. Coal and wood both can get from burning coal wood. 
Gas Bag Vehicles

This gas is made by burning wood put through a pipe directly to the vehicles. This process was very popular during World War two because of the huge gasoline shortage. But the process of making coal gas is very complicated and it is carried out in big stoves in plant pyrolitic distillation. There are no small-scale gasification units that can be put along in trailers. But in the case of gas vehicles carry the gas in many bags and placed it on the top of vehicles. These bags are called shortage bags that are made of silk and some other fabrics. It is the best way to save it from leakages. Compressed gas in metal tanks could not use due to carbon monoxide, which is part of coal gas, fractures quickly when it is compressed. But on the other hand, some flammable components, such as hydrogen, are very difficult to contain under pressure and it leaks away from steel tanks when compressed. So if we think about fabric bags that were very cheaper and easier to make than metal tanks. The biggest drawback is that the bags should be comically large. The energy density of coal gas is very low than that of CNG or LPJ. For the replacement of a liter of gasoline, two cubic meters of gasoline are needed. The structure of the vehicle was very unique that was fitted with a wooden type box that was locked to the top roof and strengthened the bumpers of the vehicle. The gas bag was fastened to the wooden framework. Gas bag vehicles had horrible economy because of poor aero dynamicity of the vehicles, having a huge bag on the roof, and due to the size of the bag. These bags vehicles also suffered from engine damage and loud bands. The vehicle was fitted with a wooden framework which was fastened to the roof and the reinforced bumpers of the vehicle. The gas bag was strapped to this wooden framework. The coal gas vehicles have become unused as gasoline but it was available again after World War II. Strangely, it is still in use after the 1990s, when it was used as public transportation at the cheapest rate that was developed in peacetime. 

Gas Bag Vehicles

Gas Bag Vehicles|





SOURCE:
# Gas bag vehicles, Low tech magazine
# Coal-gas Powered Vehicles, www.douglas-self.com

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