Ever since the creation of the internal combustion engine, engineers, racers, and race car designers have been looking for methods to boost its power. And, although building a bigger engine is a possible solution, it adds to the weight, cost, and maintenance – ultimately outweighing the benefits. That’s why boosting a normal-sized engine is a far more viable option.

One way to add power to the engine is to force more air through the combustion chamber. Extra air opens up more space for fuel, and more fuel ultimately creates a bigger explosion and increased horsepower. Using a supercharger is a great way to engineer this kind of forced air induction.

Superchargers have been used extensively for racing and production cars, but the technological complexity and cost typically limit its use to high-performance ones. Below we’ll look at how superchargers work and, by extension, how they can take your race car to its next level of performance.

Supercharger Basics

Once the air is drawn into an engine and sucked into the combustion chamber, it needs to be combined with fuel to create a charge – known as combustion. The more fuel you use, the more powerful an explosion you can achieve. However, you cannot simply pump more fuel into the engine because you need to balance the oxygen and fuel ratio. This is where the supercharger comes in.

Superchargers compress air without forming a vacuum, pushing more air into the engine. With methods like blower porting, you can even smooth out the supercharger’s internals to have less friction – making the air move with a better velocity. Ultimately, with more air in the engine, you can add more fuel and increase the engine power. 

The supercharger is powered with a belt or a chain drive that connects to the engine’s crankshaft. Most are driven by an accessory belt wrapped around a pulley that is connected to a drive gear. Making the drive gear bigger than the compressor gear causes the compressor to spin much faster, thus increasing horsepower by an average of 46 percent

Types Of Superchargers

There are two main types of superchargers that differ based on the method of gas transfer: positive displacement and dynamic compressors. Positive displacement superchargers achieve an almost constant pressure level increase regardless of the engine speed. Dynamic compressors, on the other hand, cannot deliver pressure at low speeds; instead, the speed pressure is increased rapidly after a certain threshold

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By: Automotive Addicts Contributor
Title: How Superchargers Can Take Your Race Car To The Next Level
Sourced From: www.automotiveaddicts.com/74868/how-superchargers-can-take-your-race-car-to-the-next-level
Published Date: Fri, 01 Oct 2021 12:28:03 +0000