Article Submission

Turbocharger - is the same centrifugal compressor, but with radically different drive. Speed of rotation cannot exceed 200.000 rpm. Obvious advantage: improving efficiency and cost motor (mechanical drive takes away power from the engine; it uses the energy of exhaust gases, thus increasing efficiency). Minus - is lag: you “crushed” sharply gas and must wait until the engine picks up the pace, the pressure of exhaust gases increases, turbine unwound, impeller blower with it - and finally, air will go. But this phenomenon “turbo-lag” people learned how to fight…

Therefore, besides the actual unit of boost under the hood it is “settled” two relief valves: one - for the exhaust gases, and the other - to bypass excess air from the engine manifold to the pipeline to the compressor. This valve is also controlled by the pressure in the intake manifold. Thus, the speed of the turbine rotor when resetting the gas decreases slightly and during the subsequent press on the pedal, the delay of air supply is several tenths of a second - the time of closing the valve.

Recently they have begun to use such method of controlling the air supply, as change slope of compressor blades. This idea is a long-standing, but they could not realize it for a long time.

Another problem of using turbines - this is their short period of life, although in recent years they have managed to increase significantly this time. As already mentioned, the speed of the turbine rotor must be very high up to 150-200 thousand rpm. Until recently, the life of the unit has been limited by durability of bearings. In fact, it was, such as inserts of the crankshaft, which were treated by oil under pressure. Depreciation of these bearings was great, of course, but the ball did not withstand the tremendous speed and high temperatures. The decision has been found only recently, when they managed to develop bearings with ceramic balls. First, Japanese firms had done it, and then the Swedish SKF - and machines with bearings appeared on the roads.

According to its influence on the characteristic torque of engine, the turbocharger seems to be similar to the mechanical centrifugal. But the “mediated” drive system allows you to adjust the characteristics of the turbocharger in a wider range, compensating inherent defects of torque curve.

As for the “bi turbo” and “twin turbo” - instead of one turbo-compressor unit it is used two ones - in parallel (and sometimes consistent, but less frequently). Each rotor is smaller, lighter, less inertia, more responsive.

The fact is that the rotor turbocharger cannot be done great! And all this because the larger the diameter of the turbine, the higher the moment of inertia. So, even if the driver during acceleration presses stronger the accelerator pedal, it will not be acceleration: you will have to wait until the turbine attains the appropriate speed. Thus, the turbine should be done as small as possible in diameter. But the flow of air depends on the peripheral speed of the blades, which is less than the smaller rotor diameter: It remains to increase the speed, although here there is a limit. So they use several turbines with a smaller diameter in parallel.

Long time ago car turned into not only a vehicle but also a luxury and entertainment object. Many people would like to have powerful sport car but not all of them can afford it. There is a way out - turbo kits. Those who want to know how to make their car a real masterpiece, go to this site. Lots of info about performance parts and how to order them.

Even if you are unlucky to find anything you need, don’t frustrate. Currently we have a really unique chance to choose exactly what you want at the best terms which are available on the market. All that we need is the web technologies. Use search engines, google for “buy performance parts“, look through blogs, social networks and forums. All this will help you find out lots of different information. And with that sign up for the RSS on this blog and you will always keep abreast.