duminică, 24 noiembrie 2013

Man and automobile through century

The cars are small motorized vehicles. Their success of the transport of persons and goods is due to the speed and independence that permit. But this popularity has led to overloading traffic and pollution. Over 60 million cars are produced in the world each year. Most have four wheels and an internal combustion engine piston type, water cooled, gasoline powered gasoline or diesel.
Unfortunately, the burning of fossil fuels by cars at a wide scale causing a serious air and sound pollution and the infrastructure occupy valuable land. Cars are responsible for almost 25 % of their carbon dioxide world. Gaseous carbon dioxide contributes greatly to the global heating.
Manufacturers and drivers are becoming increasingly aware of the negative effect of the internal combustion engine, which has the result that the construction of automobile is constant improved to produce more effective and safer cars from the environmental point of view: the so called nature friendly cars.
The first car was built after more than a hundred years, Gottlieb Daimler and Karl Benz. Despite the research, development and reconstruction, general construction vehicles changed very little, although in reality the story is slightly different.
Crisis fuel particularly pronounced in the 1970s led to experiments with car battery, diesel, gas cars or solar and hybrid cars, which use both of electricity and gasoline / petrol. Other innovation save fuel was fuel injection, reducing up to 20 % consumption of gasoline / fuel, reducing body weight machine by use of aluminum and plastics; construction aerodynamic car body with a low resistance air. Although an average car in the U.S. made ​​less than 43 km with 3-3.5l of gasoline / petrol in 1995, the same year Greenpeace has produced cars that travel over 100 km with 3-3.5 l.
Dubai is the country with the larger oilfield in the Middle East. If you need a Dubai cars for sale that would be environmental friendly you must look with care.

Anything about a good car

Cars represent the main mean of transportation. It represents actually the result of the development of the technology. There are very many places in this world which try to bring very many facilities to people, try to impress by inventions. This is a case for cars in uae which resembles to cars with steam engine.
It is customary to name the steam engine, steam engine piston. The figure represented a horizontal steam engine with a double acting cylinder. In steam engines come-and-go that the action of the piston steam is transformed into a rotating shaft.
Levels, guides and cylinder support frame rests on I, which is fixed by bolts of fundamentally cars. The box I5 I6 I9 drawer with its cover is molded in one. The box drawer is connected to the cylinder by canalaleI8 car. These channels penetrate both sides of the cylinder through its wall , whose outer surface is smoother. The mirror moves drawer 2I.
Drawer receives a come-and-go from eccentric 24 car assembled shaft, forming a mechanism similar to the advanced mechanism the car through the ring 25 of the eccentric, eccentric rod 26 and rod 22 of the drawer. Spool shaft through seal 20 drawer box. For uniformity of driving the car, and thanks to move the piston in dead spots, the car sits on a flywheel shaft hard 27.
Through this active forces acting flywheel shaft every time the car is equal to the resistance forces since the time when they begin to emulate these forces, the excess mechanical work don’t serve the piston acceleration, but is taken flywheel whose living force increases, operate and indeed when strong forces are larger piston movement is slow, because in this case, the flywheel render the work which he stored. Therefore in both cases the flywheel keeps the car riding uniform. Steam works as follows: steam are introduced through the steam pipe in cabinets.

The importance of cars

The history of cars, especially uae cars , – first construction vehicle considered in the sense of building transportable stretcher was carried by people. Then it evolved since man came to the conclusion that far superior forces of nature surrounding him to be captured and used for the benefit. From here begins the domestication of animals and the emergence of a new mode of transport – animal traction. The stretcher was replaced by wagon, and there were carriages, saloons etc. Representing rank and nobility economic power they possess.
The history of cars – Since this period carriages were greatly expanded in several ways. Besides the art, as some coaches were true works of art, one can notices that there were mechanics inventing the various mechanisms for braking.
The appearance of the bike is of great importance in the development of the car, as many technical achievements in the construction of the bicycle industry we find the car. But the most important invention that has made ​​the greatest contribution in the constructor car, is motor driven with steam power. This resulted in 1769 when it was built the first car fitted with a steam engine.
Steam carriages had a particularly important impact in the history of the car, hence the mankind. These vehicles have been well received by people time, which contributes greatly to their development. As proof of interest we have a early form of traffic in 1865, which required vehicles traveling at a speed of 2 miles 4 miles in cities and outside cities.
After the appearance of the internal combustion engine with moving pistons rectilinear alternative, we can talk in the true sense of the appearance of the car.
It can, though, be seen that humanity has always searched for different means of transportation that will satisfy his needs. Cars can be considered the highest form of means of transportation, it is man’s invention in making his life easier.