Product Description
How a Turbocharger works - Aurora 4000 Turbo Kit
The turbo charger is driven by heat from the expanding gasses that exit the engine's Exhaust Manifold which accelerats the turbine causing it to spin the compressor wheel. The compressor, which is nothing more than an air pump, creates boost which pressurizes the intake of the engine. The turbine in the turbo charger can spin at speeds in excess of 130,000 rpm! The increased airflow to the engine aids with the efficiency of the burn cycle and the end result is increased power output with lower exhaust gas temperatures.
Understanding this you may say, why not increase the amount of fuel injected into the engine? If more fuel creates exhaust heat, which drives the compressor then more fuel will produce more boost increasing airflow making the engine more efficient and cooler, why stop? This is the area that can get a little complicated. The typical boost provided by a turbo charger is 18-25 psi. SInce normal atmospheric pressure is 14.7 psi at sea level, you can see that you are increasing the available air to the engine by more than 100 percent. That being the case, you would expect to at least double the power produced by the engine. That's not too far off. If you remove the turbo charger from your diesel engine, you will see the effect that it will have. You will loose almost all of the power the vehicle is capable of delivering. It's not uncommon for a naturally aspirated (non turbo charged) diesel engine to product a mere 120-130 horsepower.
The turbo charger is a variable airflow system. As exhaust pressure is increased through the turbine side (Exhaust side) of the turbo charger, the backpressure increases along with it. As the backpressure in the exhaust manifold increases, air compresses causing heat. This backpressure keeps the exhaust trapped in the combustion chamber; the fresh cool air cannot be fed into the combustion chamber and so on.
To make things worse, the intake and exhaust systems on these vehicles are usually very restrictive as well. There are a few external items that help with this condition. A few examples would be a larger exhaust or air filtration systems. The Turbo charger is feeding the intake side of the engine and the turbine section of the turbo charger is being fed (choked) by the exhaust side of the engine. The engines ability to make power is governed by the turbo chargers ability to move air. With stringent emission regulations small turbo chargers are selected for production Diesel applications. This is the primary reason behind the manufactures choice of factory turbo charger selection. Due to the small nature of the factory turbo the engine does not have the ability to flow much more air to produce increased power output.
The turbo charger is driven by heat from the expanding gasses that exit the engine's Exhaust Manifold which accelerats the turbine causing it to spin the compressor wheel. The compressor, which is nothing more than an air pump, creates boost which pressurizes the intake of the engine. The turbine in the turbo charger can spin at speeds in excess of 130,000 rpm! The increased airflow to the engine aids with the efficiency of the burn cycle and the end result is increased power output with lower exhaust gas temperatures.
Understanding this you may say, why not increase the amount of fuel injected into the engine? If more fuel creates exhaust heat, which drives the compressor then more fuel will produce more boost increasing airflow making the engine more efficient and cooler, why stop? This is the area that can get a little complicated. The typical boost provided by a turbo charger is 18-25 psi. SInce normal atmospheric pressure is 14.7 psi at sea level, you can see that you are increasing the available air to the engine by more than 100 percent. That being the case, you would expect to at least double the power produced by the engine. That's not too far off. If you remove the turbo charger from your diesel engine, you will see the effect that it will have. You will loose almost all of the power the vehicle is capable of delivering. It's not uncommon for a naturally aspirated (non turbo charged) diesel engine to product a mere 120-130 horsepower.
The turbo charger is a variable airflow system. As exhaust pressure is increased through the turbine side (Exhaust side) of the turbo charger, the backpressure increases along with it. As the backpressure in the exhaust manifold increases, air compresses causing heat. This backpressure keeps the exhaust trapped in the combustion chamber; the fresh cool air cannot be fed into the combustion chamber and so on.
To make things worse, the intake and exhaust systems on these vehicles are usually very restrictive as well. There are a few external items that help with this condition. A few examples would be a larger exhaust or air filtration systems. The Turbo charger is feeding the intake side of the engine and the turbine section of the turbo charger is being fed (choked) by the exhaust side of the engine. The engines ability to make power is governed by the turbo chargers ability to move air. With stringent emission regulations small turbo chargers are selected for production Diesel applications. This is the primary reason behind the manufactures choice of factory turbo charger selection. Due to the small nature of the factory turbo the engine does not have the ability to flow much more air to produce increased power output.