Thursday, December 15, 2011

The main advantages of cars on gas

Liquefied Petroleum Gas (LPG) has all the information valuable fuel for internal combustion engines. Gas on the planet is regarded as a public eco-fuel that is better than gasoline. Plays an important role that the use of gas will not change the machine design, and will use cases and gasoline and natural gas as fuel. Liquefied natural gas has some physical and chemical properties, which should be considered to achieve greater economic and operational effect. Petroleum gas is a mixture of propane, butane and insignificant amount (around 1%) of unsaturated hydrocarbons. To date, at the gas stations are imported brands such gas, as the winter (85-95% propane) and summer (45-55% propane), established by GOST. This connection determines the properties of LPG, depending on air temperature and allows operation of the car with gas at any time of year. Liquefied gas is stored in the container under pressure from its own vapor at a temperature that does not depend on the volume of gas in the tank. This circumstance makes it possible to use all the gas in the cylinder. The main advantages of cars at a gas composed of: economy, anti-knock resistance. Octane number of gas is - 103-105, eliminates the possibility of explosion engine. This advantage is gas allows its use in engines with high compression ratio operating on high octane, expensive, gasoline. The absence of catalysts, metal fracture - the gas is not harmful contaminants - lead, sulfur, which in chemical reactions damaging to the combustion chamber. Gas well comes into the mix with air and generally fills the cylinders are the same type of mixture, allowing operation of the engine becomes quieter. The gas burns completely, for this reason, pistons, valves and spark plugs are formed Nagar. Cars with gas have such an advantage, as the stability of the aggregate state. Gas is fed into the cylinders in vapor phase, therefore the oil film on cylinder walls are not washed away and not diluted with oil in the crankcase. Rapidity of combustion of the mixture - in contrast to the gasoline burns slower than gas, which reduces the load on the pistons and crankshaft, so the car will run "smoother". But because of this incident the dynamics of dispersal (by 2-5% despite what degree of compression). In the car on the benefits of gas is environmentally friendly. The use of gas reduces the emission of exhaust mixtures. Contents of toxic carbon monoxide is reduced three times, 1,6 times - the number of carcinogenic hydrocarbons CH belonging to the base particles of unburned fuel. Quantity of nitrogen oxide NO and carbon dioxide NO2, emerging from the combustion of a mixture of oxygen and nitrogen, while working on car gas decreased by 1,2 times. Along with the above-mentioned main advantages of cars on gas should be said about a number of its existing weaknesses such as: the cold season on gas cars can not start the engine, reducing engine power by 7% increase in vehicle weight of 25-30 kg, of the cylinder, located in the trunk. The pressure in the gas tank carries the influence of air temperature. Therefore, we need to pay attention to the fact that the car does not overheat. If the container is completely filled, even the slightest increase in temperature would lead to an instantaneous pressure increase. In the car frame is a special device that automatically closes the filling channel, when it reaches the filling of 80%. When this amount is reached - refueling stops.

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