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There are many ways to make an internal combustion engine work more efficiently they include cylinder heads that use dual overhead camshafts variable length intake manifolds turbochargers and superchargers This paper will discuss the last of these devices listed the supercharger All good supercharging systems also integrate an intercooler to increase efficiency so lets take a look at the two units together and discuss the physics of what they do and how they workA supercharger is actually a very simple device it is nothing more than an air pump In the past decade superchargers have become a somewhat popular and cost effective way to increase an engines volumetric efficiency without substantial losses to fuel economy The specific type of supercharger that will be examined is the Eaton roots type The roots type supercharger consists of two helical shaped rotors that accelerate opposite of one another in a metal housing The rotors are belt driven off of the engines crankshaft and turn at velocities of up to five times that of the engineOnce the air is compressed by the supercharger it then passes into the intercooler The intercooler acts as cooling system that reduces the temperature of the compressed air It is extremely important that a supercharging system has an intercooler because of the high levels of friction that are created and experienced by the process of compressing the air From the intercooler the compressed air then enters the engine and is mixed with the appropriate amount of fuelNow that we have established how a roots type supercharger with intercooler works lets take a look at the basic physics of what is happening Obviously when the supercharger is at rest not turning there is an extremely large amount of potential energyAs previously stated the supercharger is belt driven off of the engines crankshaft so therefore it requires the input of ordered energy to work By using a system of pulleys it is able to transfer the
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