# Power output of a intercooler and turbocharger

• Anne3
In summary, when a car with a turbocharger is compared to a car without a turbocharger, the car with a turbocharger obtains a greater percentage increase in power.
Anne3

## Homework Statement

The power output of an automobile engine is directly proportional to the mass of air that can be forced into the volume of the engine’s cylinders to react chemically with gasoline. Many cars (like a 2008 Mini Cooper S) have a turbocharger, which compresses the air before it enters the engine, giving it a greater mass of air per unit volume. This rapid, essentially adiabatic compression also heats the air. To compress it further, the air then passes through an intercooler in which the air exchanges heat with its surroundings at essentially constant pressure. The air is then drawn into the cylinders. In a typical installation, air is drawn into the turbocharger at atmospheric pressure (1.01 × 10^5 Pa), density = 1.23 kg/m^3 , and temperature 15.0 C. It is compressed adiabatically to 1.45 × 10^5 Pa. In the intercooler, the air is cooled to the original temperature of 15.0 C at a constant pressure of 1.45 × 10^5 Pa.
a) Draw a − diagram for this sequence of processes.
b) If the volume of one of the engine’s cylinders is 575 cm^3 , what mass of air exiting from the intercooler will fill the cylinder at 1.45 × 10^5 Pa? Compared to the power output of an engine that takes in air at 15.0 C and atmospheric pressure, what percentage increase in power is obtained by using the turbocharger plus intercooler?
c) Repeat the previous part just using the turbocharger (no intercooler). What percentage increase in power do we get this time?

P=W/t
PV=nRT
m=PV/RT*(0.29)
T=298
R=8.314

## The Attempt at a Solution

I have drawn the p-v diagram for part a.
For part b) I assume you would find the mass needed by using m=PV/RT=9.74*10^(-4), for the second part however how would you find the power obtained?
For part c) what would change in your calculation?

Last edited:
You don't find the power obtained. You find the ratio of the powers obtained.

I haven't checked your result, but isn't the equation you used for the number of moles, not the mass? How much mass is taken into the cylinder without the turbocharger.

## What is the purpose of an intercooler and turbocharger?

An intercooler and turbocharger work together to increase the power output of an engine by compressing and cooling the air that enters the combustion chamber. This allows for more air and fuel to be combusted, resulting in a higher power output.

## How does the intercooler and turbocharger affect the power output of an engine?

The intercooler and turbocharger can significantly increase the power output of an engine by increasing the amount of air and fuel that can be combusted. This leads to a more efficient combustion process and a higher horsepower output.

## What factors affect the power output of an intercooler and turbocharger?

The power output of an intercooler and turbocharger is affected by several factors, including the size and design of the components, the amount of boost pressure being produced, and the engine's overall efficiency.

## What are some common issues that can affect the power output of an intercooler and turbocharger?

Some common issues that can affect the power output of an intercooler and turbocharger include boost leaks, worn or damaged components, and incorrect installation or tuning. Regular maintenance and proper installation can help prevent these issues.

## Can the power output of an intercooler and turbocharger be increased?

Yes, the power output of an intercooler and turbocharger can be increased by upgrading to larger or more efficient components, optimizing tuning and airflow, and utilizing other supporting modifications, such as an aftermarket exhaust system.

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