EP evalua el MBT2000

[Charlie]

en este otro, alcanzo a identificar dos datos importantes, el alcanze maximo del LRF seria de 9990 y 4000 mts seria la distancia maxima a la cual el FCS puede hallar soluciones automaticamente.

salud

[Loco]

Me permito discrepar en el tema relativo a potencia querido lokito, respecto a un motor de 4 tiempos vs un motor de 2 tiempos.

Un motor de 2 tiempos entrega una potencia mayor, por el simple hecho de no necesitar 4 vueltas para recibir la explosion, (entendemos explosion como la accion que ejerce la fuerza sobre el piston ). El motor de 2 tiempos, en 2 vueltas de cigueñal te entrega mayor potencia ( esto es por que no se pierde en 2 inncesarios tiempos mas).

El tema en contra del 2 tiempos, es que es sucio, necesita blowers (sopladores) para el ingreso forzoso de aire, es mas ruidoso genera mas calor,

Ventajas es que su funcionamiento es mas simple ya que no necesita de una bomba de inyeccion dedicada a cada cilindro, sino de una bomba de presion de combustible y inyectores, tiene menos partes mecanicas, puede ser multicombustible (por el tema del inyector-bomba), y la potencia a menos revoluciones.

Espero podamos conversar mas sobre el respecto.. es solo una opinion de lo que conozco...

Saludos Motoristicos

Julmarx

Muy buena amigo, pero aqui quisiera poner algunos detalles, please pay attention:

Combustion: The spark plug ignites the compressed gas causing it to explode, which forces the piston down.

Exhaust: The piston rises up the cylinder as the exhaust valve is opened, allowing the piston to clear the chamber to start the process over.

Each time the piston rises and falls it turns the crankshaft that is responsible for turning the wheels. This is how fuel is converted into forward motion.

Of note here is that the spark plug only fires once every other revolution. Also, there is a sophisticated set of mechanisms working in synchronization to create the four strokes. A camshaft must alternately tip a rocker arm attached either to the intake or exhaust valve. The rocker arm returns to its closed position via a spring. The valves must be seated properly in the cylinder head to avoid compression leaks. In other words, a symphony of mechanical events occurs.

In the two stroke engine, all four events are integrated into one simple downward stroke, and one upward stroke. Two strokes. Intake and exhaust are both integrated into the compression and combustion movement of the piston, eliminating the need for valves. This is accomplished by an inlet and exhaust port in the wall of the combustion chamber itself. As the piston travels downward from combustion, the exhaust port is exposed allowing the spent gasses to rush out of the chamber. The downward stroke also creates suction that draws in new air/fuel through an inlet located lower in the chamber. As the piston rises again, it blocks off the inlet and port, compressing the gasses at the top of the chamber. The spark plug fires and the process starts over. Significantly, the engine fires on every revolution, giving the two stroke its power advantage.

However, at the lowest point of travel of the piston when the chamber is filling with fuel/air, the exhaust port exposed above allows some fuel/gasses to escape the chamber. This is easily seen with an outboard motorboat, evident by the multicolored oil slick surrounding the engine, but it happens with all two stroke engines. This — along with burning oil -- creates pollution and fuel-efficiency issues.

For these reasons, two stroke engines are reserved for intermittent use, where weight-to-power ratio or orientation issues are important and where mileage isn't primary. Meanwhile manufacturers are looking for ways to add advantages to four stroke motors, making them smaller, lighter and more robust.

To further understand the difference between a two stroke and a four stroke engine let us consider the advantages and disadvantages.

Advantages of the two stroke:

Has more get-up-and-go because it fires once every revolution, giving it twice the power of a four stroke, which only fires once every other revolution. Packs a higher weight-to-power ratio because it is much lighter. Is less expensive because of its simpler design. Can be operated in any orientation because it lacks the oil sump of a four stroke engine, which has limited orientation if oil is to be retained in the sump.
These attributes make two stroke engines very popular for a variety of uses from dirt bikes, mopeds, jet skis, and small outboard motors, to lawn and garden equipment such as mowers, edgers, leaf blowers, chain saws and hedge trimmers.

But there are other differences between the two stroke and four stroke engines that aren't so favorable, which is why you won't see two stroke engines in cars.

Disadvantages of the two stroke:

Faster wear and shorter engine life than a four stroke due to the lack of a dedicated lubricating system. Requires special two stroke oil ("premix") with every tank of gas, adding expense and at least a minimal amount of hassle. Heavily pollutes because of the simpler design and the gas/oil mixture that is released prior to, and in the exhaust (also creates an unpleasant smell). Is fuel-inefficient because of the simpler design, resulting in poorer mileage than a four stroke engine. Has a high-decibel whine that may exceed legal noise limits in some areas, depending on the product and local applicable laws.

en suma, esos factores en contra pesan mucho en un tanke
otra cosa, no confundan los terminos
cuando la gente habla de mas power, no habla de mas HP, habla de 1 detonacion (power stroke) por vuelta, contrariamente al 4 stroke, el cual genera el power stroke cada 2 vueltas (1 si 1 no)
esto es tambien correccion a tu post amigo
el motor 2 stroke, en mi opinion esta bien para motocross, no para un tanke moderno

en suma, solo como gusto personal, basado en estos detalles (economia, silencio (stealth), power y limpieza
el 4 stroke is da king!
salu2

el loco.

[Degan]

Te felicito por tu chino….

Creo que tan importante como el tanque, son el resto de los sistemas que si o si deben ser parte de un “caballería blindada” bien balanceada:

a) VPC para acompañar a los nuevos MBT, que si va por proveedor chino, podría ser alguna versión del APC NORINCO WY531.
b) Recuperadores para el MBT
c) Municionadores
d) Los SPAAG ya los tienen, aunque una modernización no estaría mal
e) Los cañones autopropulsados ya los tienen
f) Vehículos de exploración
g) Un importante área de entrenamiento, que incluya simuladores.

Todo lo anterior, no es barato, por lo que el modelo de MBT está relacionado con el gasto real en el resto de equipos.

Saludos,

[BladeLord]

en suma, solo como gusto personal, basado en estos detalles (economia, silencio (stealth), power y limpieza
el 4 stroke is da king!
salu2

Exacto. En especial por el lado economico, a ver tenemos a un producto chino que ya de por si no nos da mucha confianza. Encima, tenemos una maquina de 2 tiempos que lo unico que le va a generar es un mayor desagaste, amen de requerir de combustibles de mejor calidad. En otras palabras, "in the long run" nos va a salir mucho mas caro.

[Loco]

Sin embargo...
estoy tratando de documentarme mas sobre los Diesel 2 stroke de tankes
por lo tanto, es posible que cambie de opinion
si desean saber cual es el motor Diesel mas poderoso del mundo, es justamente un Diesel 2 stroke
este particular es un MONSTRUO de dimensiones galaxicas
todo un SOB!!!
aqui el enlace...

http://people.bath.ac.uk/ccsshb/12cyl/

WTF!!!

el loco.