The diesel engine is an internal combustion engine, which uses spontaneous ignition when the fuel injection by self-ignition phenomenon is related to high temperatures in combustion chamber. These are achieved through a high compression ratio (compression ratio of 14: 1 to 25: 1) to obtain a temperature of 700-900 degrees C (Rebuilt Detroit Diesel Series 71).
But it is a Danish merchant ship, Selandia, which was the first in 1912. It is equipped to moderate by other considerations, since it is above all submarines that were fitted. Thus, the French engineer Maxime Laubeuf fitted out its a diesel submarine Egret (1901) for gasoline engines while not developed enough power and steam engines, emitting excessive smoke would have been counterproductive, the concern is precisely to develop a discreet building.
For this motor, the linear velocity of piston in cylinder at 4000 rev / min is: 88 x 2 (two strokes per motor revolution) = 176 mm or, in meters, 0.176 times 4000, or 704 m / min or 704/60 m / s = 11.7 m / s. The rotational speed of an engine is directly related to stroke of piston (and therefore the engine) and usage.
First designed for transport "heavy" (trucks in particular), the diesel-engine eventually earn a spot in individual or family car, even if the engine "essence" remains majority. In fact, diesel having a larger volume calorific value than petrol and enjoying a slightly more favorable taxation, engines are more economical to pump although more expensive to purchase and the maintenance.
For the motor city below (960 mm bore and stroke 2500 mm), the piston moves 5 meters per round. For a rotational speed of 102 r / min, the linear velocity of piston is 8.5 m / s. The rated maximum power output at 92 rev / min, it will be 7.6 m / s. In cylinders of diesel engine operates the fuel combustion, which consists of random access oxidation of by the oxygen present in air.
As soon as the fuel injected (sprayed), it almost instantly ignites, without the need to use a spark ignition. Burning the mixture greatly increases the temperature and pressure in cylinder (60 to 100 bars), pushing the piston providing a force working on a connecting rod, which drives the crankshaft rotation (or crank shaft serving as an axis engine, see crank system).
The four-stroke Diesel cycle are: intake air by opening the intake and the descent of piston valve; air compression by the piston rises, the inlet valve being closed. Engine time: shortly before top dead center is introduced by injection, the fuel is mixed with compressed air. The ensuing rapid combustion engine is the time, the hot gases push the piston, releasing part of energy. This can measured by the engine power curve;
In practice, the ratio used in diesel engines is more than 30 grams of air per gram of diesel. Waste gases of combustion Diesel actual therefore comprise mainly dinitrogen, dioxygen, carbon dioxide, water vapor and argon; are added various pollutants resulting from imperfect combustion of main character and the existence of various side reactions. To become the twenty-first century a standard engine that has failed to compete with nuclear propulsion (more expensive in different aspects). The first equipped with engines land vehicles appeared in early 1920s (Benz and Daimler).
But it is a Danish merchant ship, Selandia, which was the first in 1912. It is equipped to moderate by other considerations, since it is above all submarines that were fitted. Thus, the French engineer Maxime Laubeuf fitted out its a diesel submarine Egret (1901) for gasoline engines while not developed enough power and steam engines, emitting excessive smoke would have been counterproductive, the concern is precisely to develop a discreet building.
For this motor, the linear velocity of piston in cylinder at 4000 rev / min is: 88 x 2 (two strokes per motor revolution) = 176 mm or, in meters, 0.176 times 4000, or 704 m / min or 704/60 m / s = 11.7 m / s. The rotational speed of an engine is directly related to stroke of piston (and therefore the engine) and usage.
First designed for transport "heavy" (trucks in particular), the diesel-engine eventually earn a spot in individual or family car, even if the engine "essence" remains majority. In fact, diesel having a larger volume calorific value than petrol and enjoying a slightly more favorable taxation, engines are more economical to pump although more expensive to purchase and the maintenance.
For the motor city below (960 mm bore and stroke 2500 mm), the piston moves 5 meters per round. For a rotational speed of 102 r / min, the linear velocity of piston is 8.5 m / s. The rated maximum power output at 92 rev / min, it will be 7.6 m / s. In cylinders of diesel engine operates the fuel combustion, which consists of random access oxidation of by the oxygen present in air.
As soon as the fuel injected (sprayed), it almost instantly ignites, without the need to use a spark ignition. Burning the mixture greatly increases the temperature and pressure in cylinder (60 to 100 bars), pushing the piston providing a force working on a connecting rod, which drives the crankshaft rotation (or crank shaft serving as an axis engine, see crank system).
The four-stroke Diesel cycle are: intake air by opening the intake and the descent of piston valve; air compression by the piston rises, the inlet valve being closed. Engine time: shortly before top dead center is introduced by injection, the fuel is mixed with compressed air. The ensuing rapid combustion engine is the time, the hot gases push the piston, releasing part of energy. This can measured by the engine power curve;
In practice, the ratio used in diesel engines is more than 30 grams of air per gram of diesel. Waste gases of combustion Diesel actual therefore comprise mainly dinitrogen, dioxygen, carbon dioxide, water vapor and argon; are added various pollutants resulting from imperfect combustion of main character and the existence of various side reactions. To become the twenty-first century a standard engine that has failed to compete with nuclear propulsion (more expensive in different aspects). The first equipped with engines land vehicles appeared in early 1920s (Benz and Daimler).
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