Throttle Bodies & Components
A throttle body is a device which is used to regulate the amount of air flow, into the engine. The throttle body works in conjunction with many other components, in a vehicle. These components include sensors, air filter,the intake manifold, and a combination of many cables and linkages. With all these components working together efficiently, a throttle body will be able to control air flow to the engine better which will increase engine performance and throttle response.
The throttle body works by using a throttle plate which rotates on a shaft inside a bored housing. When the valve is rotated to the open position, air is allowed to flow. As the valve closes, air flow is limited which slows the engine and the vehicle. This throttle plate is a butterfly valve that sometimes has an airflow sensor located on it which communicates with the engine control unit. This allows the engine control unit to calculate the amount of air there is and match it with the correct amount of fuel. There may also be valves in the throttle body which can be used to allow minimal airflow when the vehicle is idling. One of these valves is called the idle air control valve and it is controlled by a small electric motor to control the amount of air which is allowed past the main throttle opening. This method of controlling air flow before it gets to the combustion chamber is one of the most effective ways to control the speed of a vehicle. Read More -->
The air horn is a component of the throttle body which is designed to convert the pressure difference between bore and entrance into air velocity with minimal energy loss. Air horns come in many shapes and sizes to fit the many different configurations that they can be installed. The design of the air horn is made for optimal air flow with the use of a flared top to allow air from the sides to get sucked in. Another job of the flare is to spread the low pressure zone over the largest area possible which helps get rid of disrupting pressures which may build up in the tube and interrupt air flow. Read More -->
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