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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 regulates the amount of air that flows into the motor. This particular mechanism operates in response to driver accelerator pedal input in the main. Normally, the throttle body is positioned between the intake manifold and the air filter box. It is usually attached to or placed near the mass airflow sensor. The biggest piece inside the throttle body is a butterfly valve called the throttle plate. The throttle plate's main function is so as to control air flow.
On most vehicles, the accelerator pedal motion is transferred via the throttle cable, hence activating the throttle linkages works so as to move the throttle plate. In vehicles consisting of electronic throttle control, likewise referred to as "drive-by-wire" an electric motor controls the throttle linkages. The accelerator pedal is attached to a sensor and not to the throttle body. This particular 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 is attached to the black portion on the left hand side which is curved in design. The copper coil situated close to this is what returns the throttle body to its idle position after the pedal is released.
The throttle plate rotates in the throttle body each and every time the operator presses on the accelerator pedal. This opens the throttle passage and enables more air to flow into the intake manifold. Typically, an airflow sensor measures this adjustment and communicates with the ECU. In response, the Engine Control Unit then increases the amount of fluid being sent to the fuel injectors in order to produce the desired air-fuel ratio. Frequently a throttle position sensor or otherwise called TPS is connected to the shaft of the throttle plate to provide the ECU with information on whether the throttle is in the wide-open throttle or also called "WOT" position, the idle position or somewhere in between these two extremes.
Various throttle bodies may include adjustments and valves in order to regulate the minimum airflow throughout the idle period. Even in units that are not "drive-by-wire" there will normally be a small electric motor driven valve, the Idle Air Control Valve or also called IACV which the ECU uses in order to regulate the amount of air which can bypass the main throttle opening.
In various cars it is normal for them to contain a single throttle body. So as to improve throttle response, more than one can be utilized and connected together by linkages. High performance vehicles like for example the BMW M1, along with high performance motorcycles like for instance the Suzuki Hayabusa have a separate throttle body for each cylinder. These models are referred to as ITBs or "individual throttle bodies."
The carburator and the throttle body in a non-injected engine are quite similar. The carburator combines the functionality of both the throttle body and the fuel injectors into one. They can regulate the amount of air flow and combine the air and fuel together. Vehicles that include throttle body injection, that is called CFI by Ford and TBI by GM, locate the fuel injectors within the throttle body. This permits an old engine the opportunity to be transformed from carburetor to fuel injection without considerably altering the design of the engine.
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