KR100275047B1 - Variable Throttle Body Assembly For Car - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable throttle body assembly of an automobile, comprising: a throttle valve for adjusting the amount of air and a mixer inside a throttle body body, a throttle lever for rotatably supporting the throttle valve, and connected to the throttle lever A throttle body assembly composed of an accelerator cable leading to a pedal, characterized in that the throttle valve is provided with an opening degree variable means for varying the opening amount according to the vehicle speed. The opening variable means includes a variable with a moving passage provided in the throttle body, a spring for reducing the tension pulled by the accelerator cable fixed at one end of the moving passage of the variable body, a moving roller connected to the other end of the spring, and an outer throttle body body. It characterized in that it comprises a fixed roller fixed to the changing the tension direction of the accelerator cable. Such an automobile according to the present invention can be prevented from starting suddenly. In addition, by preventing the excessive supply of fuel, it is possible to improve fuel efficiency and reduce exhaust gas.

Description

Variable Throttle Body Assembly For Car

The present invention relates to a variable throttle body assembly of a motor vehicle, and more particularly, to a variable throttle body assembly of a motor vehicle that variably controls the opening of a throttle valve in a throttle body body according to the stepping amount of an accelerator pedal.

In general, the engine of a vehicle is provided with a throttle body for controlling the amount of air and mixer by varying the opening degree of the throttle valve.

The throttle body is installed between the air flow meter and the surge tank. A typical example of such a throttle body will be described with reference to FIGS. 1 and 2.

As shown in the drawing, the throttle valve 2 for adjusting the intake air amount is rotatably supported by the throttle valve 3 inside the throttle body body 1. The throttle lever 3 is connected to the accelerator cable 4 to rotate the throttle valve 2 according to the degree of stepping on the accelerator pedal (not shown) to change the opening amount.

)은 액셀 케이블(F)이 당기는 장력에 비례하게 증가되는 구조로 되어 있다.And the throttle valve rotation angle (

) Has a structure in which the accelerator cable F is increased in proportion to the pulling tension.

On the other hand, although not shown in the drawings, the throttle body body 1 has a bypass passage for bypassing a small amount of air when the throttle valve 2 is completely closed.

However, in the conventional throttle body assembly, the tension of the accelerator cable and the opening angle of the throttle valve are changed almost in proportion to each other, which causes excessive fuel wastage due to the excessive supply of fuel during initial start or low speed, and incomplete combustion occurs. There was a problem that harmful exhaust gas is discharged.

Accordingly, the present invention has been made to solve the problems caused by the conventional throttle body assembly, the throttle valve is opened slowly at the initial low speed, and rapidly opened at high speed, reducing the emission of exhaust gas due to incomplete combustion. It is an object of the present invention to provide a throttle body assembly of an automobile which can realize fuel efficiency improvement.

1 is a cross-sectional view showing the internal structure of a throttle body of a conventional vehicle.

FIG. 2 shows the relationship between the rotational angle of the throttle valve of FIG. 1 and the force of stepping on the accelerator pedal. FIG.

3 is a cross-sectional view showing a variable throttle body assembly of a vehicle according to the present invention.

4 shows the relationship between the rotational angle of the throttle valve of FIG. 3 and the force for depressing the accelerator pedal.

* Explanation of symbols for main parts of the drawings

1: Throttle Body Body 2: Throttle Valve

3: throttle lever 4: accelerator cable

10: variable 10a: movement path

20: spring 30: moving roller

: 스로틀 밸브 회전각40: fixed roller

Throttle Valve Rotation Angle

F: Accel cable tension X: Traveling roller displacement

In order to achieve the above object, the present invention, a throttle valve for adjusting the amount of air and mixer in the throttle body body, a throttle lever for rotatably supporting the throttle valve, and the throttle lever connected to the accelerator A throttle body assembly composed of an accelerator cable leading to a pedal, characterized in that the throttle valve is provided with an opening degree variable means for varying the opening amount according to the vehicle speed.

The opening variable means includes a variable with a moving passage provided in the throttle body, a spring for attenuating the tension pulled by the accelerator cable fixed at one end of the moving passage of the variable variable body, a moving roller connected to the tart end of the spring, and an external throttle body frame. It characterized in that it comprises a fixed roller fixed to the changing the tension direction of the accelerator cable.

According to the configuration of the present invention described above, by adjusting the opening degree of the throttle valve to prevent the excessive supply of fuel at the initial start or low speed, it is possible to improve fuel economy and reduce exhaust gas due to incomplete combustion.

EXAMPLE

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a cross-sectional view illustrating a variable throttle body assembly of a vehicle according to the present invention, and FIG. 4 is a view showing a relationship between the rotation angle of the throttle valve of FIG.

For reference, in the description of the configuration of the present embodiment, the same parts as in the prior art described in the beginning of the specification to avoid repeated description of the description will be omitted and only the improved parts are mainly described, and the same reference numeral use.

As shown in FIG. 3, the throttle valve 2 for adjusting the intake air amount is rotatably supported by the throttle lever 3 inside the throttle body body 1, and the throttle valve 3 The opening degree variable means for adjusting the opening amount of) is provided.

The variable opening degree means is a spring (20) for attenuating the tension pulled by the accelerator cable (4) is fixed to one end of the variable passage 10 and the moving passage (10a) formed with a moving passage (10a), the spring (20) The other end of the moving roller 30 is connected. In addition, a fixed roller 40 for changing the tension direction of the accelerator cable 4 is provided outside the throttle body body 1. The moving roller 30 moves along the moving passage 10a when the tension of the accelerator cable 4 is greater than the elastic force of the spring 20.

On the other hand, due to the tension of the accelerator cable, the displacement amount (x) and the constant of the spring 20, which is moved along the movement passage 10a of the variable roller 10, should be set according to the characteristics of the engine.

Hereinafter, the operation of this embodiment configured as described above will be described in detail.

)이 적게 열리도록 움직인다.Compared to FIG. 4, the accelerator cable tension F is attenuated by the elastic force of the spring 20 installed in the variable controller 10 at the initial low speed.

) To move less open.

)의 개도량이 적게 된다.That is, when the accelerator cable tension F gradually increases, the movement roller 30 connected to the spring 20 moves along the movement passage 10a of the variable variable 10, and at the same time, the accelerator cable tension F is equal to the spring (F). The throttle valve rotation angle (

The opening amount of) becomes small.

)이 액셀 케이블 장력(F)에 비례하여 급격하게 열리게 된다.On the other hand, when the vehicle reaches a predetermined speed or more, that is, when the moving roller 30 reaches the maximum displacement amount x that can move along the moving passage 10a of the variable device 10, the throttle valve rotation angle (

) Opens rapidly in proportion to the accelerator cable tension (F).

Therefore, the present invention provides an adverse effect on the engine at low speed by providing an opening variable means for reducing the opening amount of the throttle valve at the initial low speed and opening it rapidly at high speed. You can improve the output to make it smoother.

As described above, the variable throttle body assembly of the vehicle according to the present invention can prevent the vehicle from starting and leaving by reducing the opening amount of the throttle valve at the initial start. In addition, by preventing the excessive supply of fuel, it is possible to improve fuel economy and reduce exhaust gas.

On the other hand, the present invention is not limited to the above-described specific preferred embodiments, and various changes can be made by those skilled in the art without departing from the gist of the invention claimed in the claims. will be.

Claims (1)

A throttle valve installed in the body of the throttle body to adjust the intake air amount, a throttle lever for rotatably supporting the throttle valve, and an accelerator cable connecting the accelerator pedal and the throttle valve to adjust the opening degree of the throttle valve according to the operation of the accelerator pedal. In a throttle body assembly of an automobile comprising: A throttle body is installed in the throttle body, and a moving roller which is moved along the variable by the tension of the accelerator cable is installed in the variable, and the moving roller is supported to one side of the variable by the elasticity of the spring, A variable throttle body assembly for a vehicle, characterized in that a fixed roller is installed in the throttle body body for changing the direction of action of the accelerator cable with respect to the moving roller so that the roller moves in a direction opposite to the supporting direction of the spring.

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