AutomobilesCars

Gas engine

Gasoline engines are a type of ICE in which compressed fuel is ignited by a spark of electrical origin. The power in them is controlled and controlled by the regulation of the air flow.

Gasoline engine in comparison with diesel has a high speed and volumetric (liter) power, and vibration and noise - on the contrary, lower. The combustible mixture is mainly regulated quantitatively, which means that at low and medium power (normal operation for a car), effective compression is low. Therefore, there is a weak combustion efficiency and subsequent expansion - hence the significant fuel consumption.

It turns out that at rated power the efficiency of such an engine is lower than that of a diesel engine by 20%. With partial modes, this difference reaches 40% and even more. This fact has been repeatedly confirmed by comparative and operational tests and tests of vehicles with both types of engines of the same power.

If we talk about the degree of toxicity of the exhausted gaseous substances, it can be noted that thanks to the improvement of gasoline engines in the last decade, this indicator has become much better. This was influenced and controlled by a piston processor short direct injection with injectors. At the same time, according to many reputable experts from leading automotive companies, in modern conditions of high requirements for measures to protect the environment and the environment, gasoline engines are still inferior to diesel engines - the most promising engines that meet the above requirements. However, work to ensure and improve the environmental friendliness of the former does not stop.

If the car is equipped with a gasoline engine, then it normally takes 4 working cycles:

  • Inlet. Thus the piston of one cylinder falls downwards, and the engine, like a pump, through an opening valve "sucks" gasoline and air.
  • Compression. Both the exhaust and the inlet valves are closed. Now the piston rises, squeezing the mixture of air and fuel. At the end of this tact, the spark plug generates a spark that ignites the already compressed mixture.
  • Working stroke. The inlet valve and exhaust valve are still closed, the fuel burns out. The combustion product rapidly grows in volume, because of what it pushes the piston down. The piston, in turn, rotates the crankshaft through the connecting rod.
  • Exhaust. The piston rises again. The exhaust valve opens, and the exhaust gases exit into the exhaust path, and then into the atmosphere.

There are some features of operation and the device of the gasoline engine. Problems that may require repair of gasoline engines are low-quality fuel, untimely or poor-quality maintenance, high mileage. For repair, you need to contact a specialized car service center, where experienced craftsmen work in accordance with all possible requirements of the manufacturer and technological cards that regulate all repair operations for each mechanism or unit.

Summarizing, it is necessary to indicate the advantages that a gasoline engine is characterized by . First of all, this is a large power with the same volume. This is due to the high energy output of the consumed fuel - gasoline or ethanol. In addition, the gasoline engine itself has a simpler design and its cost is lower than the price of diesel. Well, of course, it works quietly, which is especially appreciated by motorists who have moved from a gasoline car to a diesel car, because they can not get used to a loud engine.

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