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Throttle Body for Forklifts
Forklift Throttle Body - Where fuel injected engines are concerned, the throttle body is the part of the air intake system that controls the amount of air which flows into the motor. This particular mechanism functions in response to driver accelerator pedal input in the main. Usually, the throttle body is located between the air filter box and the intake manifold. It is normally attached to or placed near the mass airflow sensor. The biggest piece within the throttle body is a butterfly valve known as the throttle plate. The throttle plate's main function is to regulate air flow.
On the majority of cars, the accelerator pedal motion is transferred via the throttle cable, thus activating the throttle linkages works so as to move the throttle plate. In automobiles with electronic throttle control, also called "drive-by-wire" an electric motor controls the throttle linkages. The accelerator pedal connects to a sensor and not to the throttle body. This sensor sends the pedal position to the ECU or Engine Control Unit. The ECU is responsible for determining the throttle opening based on accelerator pedal position along with inputs from different engine sensors. The throttle body has a throttle position sensor. The throttle cable connects to the black part on the left hand side which is curved in design. The copper coil positioned next to this is what returns the throttle body to its idle position when the pedal is released.
Throttle plates revolve inside the throttle body every time pressure is placed on the accelerator. The throttle passage is then opened so as to permit more air to flow into the intake manifold. Typically, an airflow sensor measures this alteration and communicates with the ECU. In response, the Engine Control Unit then increases the amount of fluid being sent to the fuel injectors so as to generate the desired air-fuel ratio. Frequently a throttle position sensor or also called TPS is attached to the shaft of the throttle plate to provide the ECU with information on whether the throttle is in the wide-open throttle or "WOT" position, the idle position or somewhere in between these two extremes.
Various throttle bodies could include valves and adjustments in order to regulate the least amount of airflow through the idle period. Even in units which are not "drive-by-wire" there would usually be a small electric motor driven valve, the Idle Air Control Valve or IACV that the ECU uses to control the amount of air which could bypass the main throttle opening.
It is common that lots of cars have a single throttle body, although, more than one can be utilized and connected together by linkages in order to improve throttle response. High performance cars like the BMW M1, together with high performance motorcycles like for example the Suzuki Hayabusa have a separate throttle body for each and every cylinder. These models are called ITBs or otherwise known as "individual throttle bodies."
A throttle body is similar to the carburetor in a non-injected engine. Carburetors combine the functionality of the fuel injectors and the throttle body together. They function by mixing the air and fuel together and by regulating the amount of air flow. Vehicles that include throttle body injection, that is called TBI by GM and CFI by Ford, situate the fuel injectors inside the throttle body. This permits an old engine the opportunity to be transformed from carburetor to fuel injection without considerably changing the design of the engine.
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