Almost, every motorbike used in motorsports and in some factory production motorbikes, we can able to see this RAM air intake system. RAM air refers to the method of using the airflow created by a fast moving object to increase ambient pressure. So, when the air enters into the object which is moving fast, it creates pressure and allows denser amount of air to flow through it. To need more power, more air and more amount of fuel is required. In cars, the eco system is totally different. Superchargers and turbochargers can be used to improve the breathing efficiency resulting in more horsepower.
But in motorbikes, overall weight should be less as possible to obtain good power to weight ratio. So, designing a motorbike engine with a turbocharger may increase the power. When we use a turbo, it'll suck hot air and sends it to the engine where it contains less air density. For this purpose, intercooler is used where the temperature of the intake air is reduced than that of the ambient one and sends it to the engine where it contains denser air resulting in more power. But, adding all this components and parts increases the overall weight of the machine. Even though, superchargers also increases the overall weight of the machine. For producing same amount of power in good power to weight ratio, RAM air intake comes to action.
In a normal motorbike without RAM air intake, the air filter is present in the air box which is fixed right below the rider's seat. In some motorbikes, we can also able to see the air filter under the fuel tank. Let's dive into some basics first. Air and fuel sprinkles mixes together sucked into the combustion chamber by the piston during suction stroke and ignited with the help of sparkplug which makes the motorbike to move. When the engine is running for a long time, the surrounding temperature is increased and the air which is going to be entered into the engine is also with more temperature. Air which is high in temperature have less density. That is, less oxygen molecules enters into the combustion chamber resulting in low performance.
So in RAM air intake system, the intake is situated away from the engine. In most of the motorbikes with this type of intake, you can able to see the intake is present at the motorbike's front end. When the motorbike is moving at high speed, air with high pressure and more density will be entering into the engine via the air box that is with more oxygen molecules in it. At the same time of more air entering, the injector also sprinkles more amount of fuel to mix with it to produce more power. The extra power that we are obtaining through this arrangement is known as RAM boost. But, we have to understand several thing here. As we know when the motorbike moves, air enters via the intake which is present at the front end of the motorbike. When the motorbike is moving at very low or in mid range speed, any boost would not be obtained. To feel and experience this RAM boost, the motorbike should roll at high speeds which will pressurize and sends the air into the combustion chamber containing more density.
Motorbike's air box pipe should be well insulated from the engine heat to achieve great RAM boost efficiency. Another important parameter here is fueling. When more amount of air is entering through the intake, fuel should be injected with respect to the amount of air enters which says that this RAM air system is only effective for the fuel injected motorbikes. Another thing here is, it is proven that the RAM air system helps the motorbike's engine to run at optimal temperature.
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But in motorbikes, overall weight should be less as possible to obtain good power to weight ratio. So, designing a motorbike engine with a turbocharger may increase the power. When we use a turbo, it'll suck hot air and sends it to the engine where it contains less air density. For this purpose, intercooler is used where the temperature of the intake air is reduced than that of the ambient one and sends it to the engine where it contains denser air resulting in more power. But, adding all this components and parts increases the overall weight of the machine. Even though, superchargers also increases the overall weight of the machine. For producing same amount of power in good power to weight ratio, RAM air intake comes to action.
![]() |
In a normal motorbike without RAM air intake, the air filter is present in the air box which is fixed right below the rider's seat. In some motorbikes, we can also able to see the air filter under the fuel tank. Let's dive into some basics first. Air and fuel sprinkles mixes together sucked into the combustion chamber by the piston during suction stroke and ignited with the help of sparkplug which makes the motorbike to move. When the engine is running for a long time, the surrounding temperature is increased and the air which is going to be entered into the engine is also with more temperature. Air which is high in temperature have less density. That is, less oxygen molecules enters into the combustion chamber resulting in low performance.
![]() |
So in RAM air intake system, the intake is situated away from the engine. In most of the motorbikes with this type of intake, you can able to see the intake is present at the motorbike's front end. When the motorbike is moving at high speed, air with high pressure and more density will be entering into the engine via the air box that is with more oxygen molecules in it. At the same time of more air entering, the injector also sprinkles more amount of fuel to mix with it to produce more power. The extra power that we are obtaining through this arrangement is known as RAM boost. But, we have to understand several thing here. As we know when the motorbike moves, air enters via the intake which is present at the front end of the motorbike. When the motorbike is moving at very low or in mid range speed, any boost would not be obtained. To feel and experience this RAM boost, the motorbike should roll at high speeds which will pressurize and sends the air into the combustion chamber containing more density.
Motorbike's air box pipe should be well insulated from the engine heat to achieve great RAM boost efficiency. Another important parameter here is fueling. When more amount of air is entering through the intake, fuel should be injected with respect to the amount of air enters which says that this RAM air system is only effective for the fuel injected motorbikes. Another thing here is, it is proven that the RAM air system helps the motorbike's engine to run at optimal temperature.
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