When it comes to tuning, there are some trends in other countries that we can look for. The Americans and muscle cars are very popular, for example, huge blowers, which can also arrive well in our cars. The ultimate example here is in any case the Dodge Charger RT with 350-CI Chevy Crate engine off Fast and Furious 4. Many people have the impression that a blower is an exotic power unit that can only be found on wild road machines or thoroughbred racing cars. He also gives the impression that such a charged vehicle is difficult to drive in everyday life. On both counts nothing could be further from the truth! The truth is that a blower is nothing more than a big air pump that provides more pressure (boost) to an engine. When was the last time you saw an air pump as exotic? With the help of Weiand and Holley employees, the following 3 bullet points will give some insight into the relationship between compression ratio and boost pressure and a few pointers for choosing the right compressor based on this information. For now, however, we start with an overview of the compressors, including the blower styles and basic terminology.
What is a blower?
A compressor that is very similar in function to a turbocharger is called a blower. The difference between Blower and turbocharger is that the blower is not driven by the exhaust gases. The blower is mechanically driven by the camshaft via a belt.
How a blower works
Blowers are virtually simple air pumps that push more air into the cylinder. As the blower compresses more air and fuel into the engine, the combustion load becomes stronger and the engine can produce more power and torque. For example, in a road vehicle having a mean boost pressure, approximately 40 to 50 percent more air is packed into the cylinders than an uncharged engine. This allows a smaller displacement engine to produce similar power and torque as a naturally aspirated, sometimes significantly larger, engine.
Different Blower types
Blowers usually use one of three designs: Radial, Roots- or Screw Series, Radial compressors are similar to turbochargers in many ways. However, centrifugal compressors are actually driven by the engine by a belt while a turbocharger is driven by the exhaust of the engine. Centrifugal compressors rely on an internal impeller to increase the boost pressure. Since the increase depends on how fast the impeller rotates, these units generally do not produce too high an increase at low speeds (turbo lag or turbo lag) because the impeller does not turn fast enough. However, if your vehicle already has good performance and torque, a radial compressor is the best choice to maximize high-speed performance.
not only the blower is crucial
For a classic Ami with thick carburetor V8 under the hood for most but only a typical blower in question. The blower is mounted between the cylinder banks and driven by the crankshaft. The advantage that the air is no longer sucked in but is pressed in, is probably the biggest selling point of this system. It achieves a higher cylinder filling and at the same time a higher compression because the mixture is already pre-compressed as soon as the valve closes. But of course in the case of the carburetor and many other components (connecting rods, bearings, etc.) must be adapted to the expected extra power due to the blower. Tip: If you want to block a blower you should rebuild the whole engine. Pay attention to stronger connecting rods and bearings that can withstand more force and use cylinder heads with lower compression. We hope you the info report to the term Blower / compressor from the field of autotuning. Our goal is that the largest German-language tuning dictionary (Tuning Wikipedia) and to explain tuning terms from A to Z easily and understandably. Almost every day we expand this encyclopedia and how far we are already can you HERE see. Soon the next one will be Tuning scene concept be illuminated by us. Incidentally, you will be informed about new topics if you have ours Feed subscribe to.
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