Before we touch on the theme of an ordinary diesel engine unit it would be useful to make a small excursion into the past and trace those who discovered the principle of the diesel engine, as well as the development of engines throughout the XX century.
engineer who developed the design of the first engine using liquid fuel as an energy source, was Rudolf Diesel.Even at the end of the 19th century, he discovered the possibility of using the effect of instantaneous ignition of the fuel in the chamber, whereby it was possible to obtain great energy, capable to cause rotation of the crankshaft.It is from this time begins the era of diesel internal combustion engines.The main competitor diesel units were petrol engines that have won due to the fact that they could provide a higher speed.Only in the 30s of XX century German engineer Robert Bosch was able to construct the first ever multiple pumps of high pressure, which provided the further development of diesel engines.
The principle of operation of the diesel engine is based on the fact that the ignition of the fuel mixture in the cylinders of the engine is not due to a spark from the spark plugs, and due to the pressure to which the diesel.If a gasoline engine the fuel is mixed with air before entering the cylinder in the diesel engine is cleaned air enters the cylinder as the piston moves down, whereupon the diesel fuel is injected, and thereby form a high pressure mixture is ignited.The result is a more powerful burst of energy, and, accordingly, the output of the engine increases significantly.Thus, the principle of operation of the diesel engine is based on a strong compression of the fuel mixture and its ignition.
There is, however, a number of disadvantages associated with the physical characteristics of air and fuel.The fact that the bitter cold temperature compressed air may not be sufficient to ignite the diesel fuel with which some of the problems associated with the start-up of diesel engine cars in the cold winter.However, in modern diesel units, not only the car, but also for industrial use, the system is used Preheat air which virtually eliminates the nuisance.
Diesel engines are widely used today in the shipbuilding and aircraft construction, where they proved to be reliable and durable system with long life.Besides engines of this type have become widespread, and a turbine.Thus the principle of operation of the turbine of the diesel engine is to use the total power arising from the combustion of fuel during operation of mechanical turbine.
Unfortunately, until now among motorists go some myths about diesel engines, among which the following are the most common:
- too loud diesel engine operation;
- Slow operation of the engine;
- economical operation;
- a bad start when cold.
On the last point, we have found out, and now the principle of operation of the diesel engine does not depend on the ambient temperature.As for the more economical operation, it was before, when the cost of diesel fuel was 3 times lower than the cost of gasoline.Today, the main advantage of diesel engines is more power and longer service life of the motor.If we talk about the loud and slow, the very principle of the diesel engine denies the allegations, because the proper setting of the engine and the conditions of its operation, it will serve you faithfully for a long time.
