Berlin, probably the most exciting city in Europe refuels LPG. But what is hidden behind the fuel alternative no. 1? If we are talking about autogas or liquefied petroleum gas, is thus generally a Mixture of propane and butane meant. Both gases are mixed together in certain proportions to generate the best possible properties during combustion. Available at well over 100 filling stations in Berlin, LPG is the most commonly refueled alternative. Nowadays, this popular and, above all, cheap gas is also known as liquefied petroleum gas LPG (Liquefied Petroleum Gas) or under the term liquefied petroleum gas. In modified composition it can also be used as a heating gas.
Origin of LPG
The two main components of Autogas, i.e. propane and butane, is a by-product of both oil production and the refining of gasoline, diesel and other fuels. Since processing and transport were long considered uneconomical, the gases were and still are flared directly on site in many cases. However, thanks to advancing technologies and the use of LPG in gasoline engines, this method is increasingly being dispensed with. The environmentally friendly alternative fuel is available.
By the way: The first autogas filling station was founded in Germany as early as 1935. Even then, LPG was used to power passenger cars.
Unlike conventional fuels such as diesel or gasoline, LPG requires a special tank, as a certain pressure is needed for liquid storage. This is installed in most cases in the rear of the vehicle and has a pressure inside of about 8 bar.
The liquid storage of LPG has some advantages. On the one hand, a large quantity of LPG can be accommodated in a small space. Secondly, the compression cools the gas – modern LPG systems can use this advantage to cool down the fresh air entering the engine and make the combustion process more efficient.
Another positive feature of LPG is its combustion. Because significantly fewer pollutants are released here than with gasoline or diesel. On average, the combustion of LPG produces 80 percent less nitrogen oxides, 50 percent less unburned hydrocarbons, and up to 20 percent
The LPG then enters the engine compartment via special pipes that are laid underneath the vehicle. Here it is either brought into the gaseous state (250 times its volume) by a heated vaporizer or injected directly into the intake tract or even the cylinder.
Autogas differences between summer and winter gas
Since autogas consists of two main components, the mixing ratio can be influenced in a simple way. This advantage is used to prepare LPG ideally for summer as well as for winter. Because with the falling and rising temperatures also the properties of the LPG change.
In detail, this means that winter autogas has a propane content of 60 percent, while butane is 40 percent. In summer, it’s the other way around: here, the butane content is increased because it has a greater calorific value.
A look at the gas pump already reveals in principle, why LPG is the best alternative for gasoline and diesel. With an average price of 60 cents per liter, LPG is half as expensive as the first-mentioned fuels. Drivers save money from the first kilometer onwards.
On the one hand, this is due to the general market prices of LPG. On the other hand, however, liquid petroleum gas is also favored by the state. A concession is planned until 2018, in which autogas will be taxed at a reduced rate. This reduction is very likely to continue through 2018. Check tax benefits bs 2025 Because the EU envisages a radical reduction in CO² emissions, which is not possible without alternatives such as LPG.