Fresh air from the inlet, air filter all the way to the engine, the next thing you hit is the throttle, commonly known as the throttle. This is the whole engine, the mechanism that the driver controls, and in the carburetor engine, the carburetor does the job; In injection engines, the throttle body replaces the carburetor. In the use of injection fuel supply system, fuel directly in front of the intake by the ejector injection, throttle small electromagnetic valve body will be less fuel and air mixing task. But to control mixing, throttle bodies are no simpler than carburetors.

Solenoid valve car a typical throttle body, should have the main inlet and throttle, and throttle is controlled by a spring, when the driver does not step on the throttle, the throttle is closed, so that most of the air is excluded from the valve; When the driver presses down on the accelerator pedal, the exhaust solenoid throttle cord pulls on the throttle spring, opening the valve to let air into the engine from the main inlet. In addition, a throttle sensor converts the throttle opening into an electronic signal that the engine control Unit (ECU) can use to control fuel injection.

There is also an idle control valve on the throttle body, which is controlled by the one-step motor. The engine ECU controls the operation of the idle motor to adjust the appropriate amount of air intake for the engine idling when it is cold, when it is cold on and off, and when it is changing between neutral and D-gear.

The traditional throttle (throttle) is driven by the throttle wire mechanical way, but for the integrity of the whole vehicle control, many new models have adopted electronic control throttle (electronic throttle).

Fresh air from the inlet, air filter all the way to the engine, the next thing you hit is the throttle, commonly known as the throttle. This is the whole engine, the mechanism that the driver controls, and in the carburetor engine, the carburetor does the job; In injection engines, the throttle body replaces the carburetor. With a jet feed system, fuel is discharged directly from the injector at the intake door, eliminating the task of mixing fuel with air from the throttle body. However, in order to control the mixture of oil and gas, the throttle body mechanism is no simpler than the carburetor.

A typical throttle body shall have a main inlet and a throttle valve, which is operated by a spring. When the driver does not press the throttle, the throttle valve is closed so that most of the air is excluded from the valve. When the driver presses down on the gas pedal, the throttle cord pulls on the throttle spring, opening the valve to let air into the engine from the main inlet. In addition, a throttle sensor converts throttle opening into an electronic signal, allowing the engine control system (ECU) to control fuel injection based on throttle opening.

There is also an idle control valve on the throttle body, which is controlled by a step motor. The engine ECU controls the operation of the idle motor to adjust the appropriate amount of air intake for the engine idling when it is cold, when it is cold on and off, and when it is changing between neutral and D gear.

The traditional throttle valve (throttle) is driven by the throttle wire mechanical way, but for the integrity of the vehicle control, many new models have adopted electronic control throttle valve (electronic throttle).