Engine OEMs, according to engine use and reliability required ofm, have set limits following ranges (wear test result): stationary engine (generator, large motor boat): 6-8 m / s, motor truck 8 to 9 m / s, automobile engine: 12-13 m / s and Motor racing: beyond 15 m / s. These limits determine the life of engine and its power in kilowatts or horsepower per liter of displacement (Rebuilt Detroit Diesel Series 71).
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.
Moreover, even if the engine is making significant progress in inter-war period, the steam remains dominant (heating coal being gradually abandoned in favor of heating oil). This is for example the case of Normandie or giant battleships of Second World War (Yamato, Bismarck). It was not until the second half of twentieth century to see diesel spill into sea transport (armed or not).
According to definition above: slow engine, medium speed or fast motor, a motor defined as semi fast to 1000 rev / min can have a run of 450 mm to a linear velocity of piston supposed to 9 m / s. Assuming that cylinder of engine is a square type (stroke equal to bore) is running 450 mm bore and 450 mm per cylinder of 91.225 liters.
Moreover, progress in this area has largely nullified the old dichotomy between the gasoline engine "Zoom-Zoom" and "Daddy Diesel". Performance and tend to balance, diesel has become more athletic and nervous, attractive in recent years acquired a once gasoline customers. However, balancing in terms of performance is also reflected in a balance in terms of cost.
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).
Stoichiometry in "neutral" combustion (without excess oxygen), it is 3.46g of oxygen to burn 1g of hexa-decane or, for combustion air, 14.96g of air (dry assumed) per gram hexadecane. This neutral combustion will generate for each gram of hexa decane burned: 15.96g of gas, containing 11.30 g of dinitrogen, argon 0.19 g, 3.12 g of carbon dioxide (3.11 g from which the combustion hexa-decane) .
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.
Moreover, even if the engine is making significant progress in inter-war period, the steam remains dominant (heating coal being gradually abandoned in favor of heating oil). This is for example the case of Normandie or giant battleships of Second World War (Yamato, Bismarck). It was not until the second half of twentieth century to see diesel spill into sea transport (armed or not).
According to definition above: slow engine, medium speed or fast motor, a motor defined as semi fast to 1000 rev / min can have a run of 450 mm to a linear velocity of piston supposed to 9 m / s. Assuming that cylinder of engine is a square type (stroke equal to bore) is running 450 mm bore and 450 mm per cylinder of 91.225 liters.
Moreover, progress in this area has largely nullified the old dichotomy between the gasoline engine "Zoom-Zoom" and "Daddy Diesel". Performance and tend to balance, diesel has become more athletic and nervous, attractive in recent years acquired a once gasoline customers. However, balancing in terms of performance is also reflected in a balance in terms of cost.
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).
Stoichiometry in "neutral" combustion (without excess oxygen), it is 3.46g of oxygen to burn 1g of hexa-decane or, for combustion air, 14.96g of air (dry assumed) per gram hexadecane. This neutral combustion will generate for each gram of hexa decane burned: 15.96g of gas, containing 11.30 g of dinitrogen, argon 0.19 g, 3.12 g of carbon dioxide (3.11 g from which the combustion hexa-decane) .
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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