Guide To Rebuilt Detroit Diesel Series 71
The diesel-engine is preferably used when there is a need for high torque and good performance: locomotives, boats, trucks, farm tractors, generators, gear auto or public works. From a historical point of view, it is the Navy that is primarily concerned with diesel-engines (Rebuilt Detroit Diesel Series 71). Given the size of first engines, it would seem natural that engineers and naval architects are, before all others interested in this new engine they had instead of hosting.
The development engine overspeed may lead to shock pistons valves which often result in buckling of valve stem or their control rods. Schematically, the more the piston is bigger, his race is important. For example: DW10 engine ated PSA displacement 1997 cc, 85 mm bore, 88 mm stroke, maximum speed 4000 rev/min.
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).
However, the diesel engine is rarely used on motorcycles and airplanes, including a question-board mass, except that Clerget aircraft were distinguished by a power to weight ratio comparable to that of a gasoline engine, but World War II stopped the development. However, the use of diesel engines in light aircraft, appeared in 1980s began to develop: Cessna L19 equipped with a diesel engine of Renault 25 pushed to 135 hp in 1988, amateur-built aircraft with a Dieselis Isuzu (Opel) 70 hp 19987.
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).
The development engine overspeed may lead to shock pistons valves which often result in buckling of valve stem or their control rods. Schematically, the more the piston is bigger, his race is important. For example: DW10 engine ated PSA displacement 1997 cc, 85 mm bore, 88 mm stroke, maximum speed 4000 rev/min.
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).
However, the diesel engine is rarely used on motorcycles and airplanes, including a question-board mass, except that Clerget aircraft were distinguished by a power to weight ratio comparable to that of a gasoline engine, but World War II stopped the development. However, the use of diesel engines in light aircraft, appeared in 1980s began to develop: Cessna L19 equipped with a diesel engine of Renault 25 pushed to 135 hp in 1988, amateur-built aircraft with a Dieselis Isuzu (Opel) 70 hp 19987.
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).
publié par Unknown @ 11:46
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