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MBC-101 |
| This article was authored by BoostController.com LLC after receiving many questions about how manual boost controllers work. |
MBC-101: Introduction to Manual Boost Control - page 1
Due to the ever-increasing popularity of turbocharged vehicles, (both factory turbocharged, and after market turbocharged), more and more car enthusiasts are discovering Manual Boost Controllers for the first time, and are curious about how they work. Manual Boost Controllers are generally low cost, and can provide a substantial horsepower gain to turbo cars. This article pertains to Manual Boost Controllers as opposed to Electronic Boost Controllers, although references to Electronic Boost Controllers are made in this discussion. This information is rudimentary, and is by no means all-encompassing. Many areas of boost control and turbo charging are omitted or only slightly mentioned here. The intent of this article is to convey a basic understanding of boost control to the novice. That being said, please get comfortable and read on…
A very basic definition of Manual Boost Controller (hereinafter referred to as "MBC") is: a device that regulates the amount of air pressure applied to the intake manifold of an engine that is equipped with a turbocharger. So that we can understand why regulating (and increasing) the charged air pressure to the intake manifold is important, let's take a look at high-level overviews of both non-turbocharged, and turbocharged engines.
In a non-turbocharged engine, air enters the engine via the intake manifold. The air is mixed with fuel in the combustion chamber and then this explosive mix of air and fuel is compressed in preparation for ignition. Then, the spark plug delivers a properly timed spark which results in an explosion. The resulting release of energy is channeled so that engine components are propelled. The by-product of this explosion is exhaust, and that exhaust is whisked out of the combustion chamber. The exhaust is channeled away from the driver via the exhaust system, and then released at a point where it can disseminate into the atmosphere. The picture below illustrates these various steps.
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