KR19990026504U - Throttle Valve Structure of Automobile Engine - Google Patents

Abstract

The present invention relates to a throttle valve structure of an automobile engine, the throttle valve (12) provided in the vehicle throttle body (10), the outer peripheral surface of the throttle valve (40) and the guide tube (22) of the throttle body (10) This angle is formed to be inclined at a predetermined angle θ2, and the inclination angle θ2 of the outer circumferential surface of the throttle valve 40 is made to be the same angle (θ2 = θ1) as the inclination angle θ1 of the throttle valve 40. The throttle valve actuated by the operator operating the accelerator pedal prevents the throttle valve from being pushed into the guide tube due to friction with the guide tube of the throttle body, thereby improving the responsiveness of the throttle valve according to the operation of the accelerator pedal. It is a useful thing.

Description

Throttle Valve Structure of Automobile Engine

The present invention relates to a structure of a throttle valve of an automobile engine, and more particularly, the throttle valve is formed on a throttle body of a vehicle to form a contact angle of a predetermined angle on a contact surface of a throttle valve which is in contact with a duct of a throttle body. The present invention relates to a throttle valve structure of an automobile engine which prevents the body from being clamped in a pipeline.

As is well known, the internal combustion engine burns the mixer sucked into the combustion chamber, and causes the piston to reciprocate up and down linearly with the explosive force generated therein, and converts the linear reciprocating motion into rotational motion as a crank mechanism to obtain rotational power. It may be a representative example.

Such an automobile engine is made by mutual coupling between a plurality of parts. Among the parts, a throttle body is provided. The throttle body includes a throttle valve for controlling the intake air amount, and a small amount to secure an idling rotation speed. The bypass passage through the air, the throttle position sensor for detecting the opening of the throttle valve and the dash port are provided.

The bypass passage of the throttle body allows the air introduced from the air cleaner to the surge tank side through a passage that penetrates the air required for idling rotation to one side of the throttle body.

1 is a schematic perspective view illustrating a throttle body of a typical vehicle, and FIG. 2 is a schematic cross-sectional view illustrating a throttle valve provided in a conventional vehicle throttle body.

Although not shown, the throttle body 10 is provided at one side of the air intake hose connecting the air cleaner and the surge tank to control and supply air through the air cleaner to the surge tank side.

And, as shown in the accompanying drawings, the central portion of the throttle body 10 is formed through the guide tube 22 is connected to the air intake hose, the inside of the guide tube 22 has a circular throttle valve ( 12 is rotatably provided.

The throttle valve 12 provided inside the throttle body 10 to open and close the duct of the guide tube 22 is prevented from being pressed into the guide tube 22 of the throttle body 10. (12) is provided in the guide tube 22 of the throttle body 10 at a predetermined angle, that is, the inclination angle θ1 inclined at about 4 degrees.

The throttle valve 12 is connected to the rotation shaft 16 of the throttle body 10, the rotation shaft 16 is connected to the throttle cam 14 rotatably provided at a predetermined distance from the throttle body 10. .

A stopper 20 interlocked with the throttle cam 14 is provided at the lower end of the throttle cam 14, and both ends of the stopper 20 and the throttle body 10 are respectively stopped with the stopper 20. The return spring 18 which is locked to the throttle body 10 is provided.

In particular, the air sucked into the guide tube 22 formed in the throttle body 10 constituting the engine is supplied to the combustion chamber of the engine in accordance with the pull and release operation of the throttle cam 14 is connected to the throttle valve 12 The amount of air is adjusted, the throttle cam 14 is connected to an accelerator pedal (not shown) provided in the lower portion of the driver's seat through the connection of a plurality of link members (not shown).

The throttle valve of the vehicle throttle body made in this way has a small throttle cam 14 caused by a link member connected to the throttle cam 14 and the accelerator pedal of the throttle body 10 provided on one side of the engine when the driver steps on the accelerator pedal. It will rotate quantitatively.

Then, as the rotation shaft 16 is rotated by the rotation of the throttle cam 14, the throttle valve 12 connected to the rotation shaft 16 is rotated to open the guide tube 22 of the throttle body 10, thereby causing air. Air through the cleaner is introduced into the combustion chamber through the throttle body (10).

When the driver releases the foot from the accelerator pedal when the vehicle decelerates or stops, the throttle cam 14 connected to the accelerator pedal by a predetermined link member has a stopper 20 connected to the lower end thereof so that the return spring 18 The throttle cam 14 is also returned to its original state by the return to the original state, and the rotation shaft 16 and the throttle valve 12 are interlocked with the throttle cam 14 due to the return of the throttle cam 14. 12 closes the guide tube 22 of the throttle body 10.

In addition, when the throttle valve 12 opens and closes the guide tube 22 of the throttle body 10, the stopper 20 provided at the lower end of the throttle cam 14 is interlocked to one side of the throttle body 10. It is locked to limit the amount of rotation of the throttle valve (12).

However, the throttle valve of a conventional vehicle made as described above is interlocked with an accelerator pedal manipulated by a driver while the vehicle is running. The throttle valve is inclined at a predetermined angle to the guide tube of the throttle body, and the accelerator The pedal rotates in response to the pedal effort. Such a throttle valve is worn out due to friction of the outer circumferential surface of the throttle body with the guide tube of the throttle body due to continuous contact of the outer circumferential surface of the guide tube with the inner circumferential surface of the throttle body. Since the surface contact with the pipe is tightly fitted into the pipe of the guide pipe, there is a problem that it is difficult to precisely control the throttle valve according to the pedal force of the accelerator pedal.

The present invention is devised to solve the problems of the prior art as described above, the throttle valve which is provided in the throttle body of the vehicle to open and close the guide tube of the throttle body is worn by the friction generated continuously to the guide tube It is an object of the present invention to provide a throttle valve structure of an automobile engine to prevent indentation.

Technical configuration of the present invention for achieving the above object is in the throttle valve provided in the vehicle throttle body, the angle formed between the outer peripheral surface of the throttle valve and the guide tube of the throttle body is formed to be inclined at a predetermined angle, the throttle valve It characterized in that the inclined angle of the outer peripheral surface is formed to be the same angle as the inclination angle of the throttle valve.

1 is a schematic perspective view showing a throttle body of a typical vehicle

Figure 2 is a schematic cross-sectional view showing a throttle valve provided in a conventional vehicle throttle body

Figure 3 is a cross-sectional view showing a throttle body with a throttle valve according to the present invention

Explanation of symbols on the main parts of the drawings

θ1: inclination angle of the throttle valve provided in the guide tube of the throttle body

θ2: angle of inclination of the outer circumferential surface of the throttle valve

10: Throttle Body 12: Throttle Valve

14: throttle cam 16: axis of rotation

18: Return spring 20: Stopper

22: guide tube 40: throttle valve

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

3 is a cross-sectional view illustrating a throttle body having a throttle valve according to the present invention.

As shown, in the throttle valve 12 provided in the vehicle throttle body 10, the angle formed between the outer peripheral surface of the throttle valve 40 and the guide tube 22 of the throttle body 10 is a predetermined angle ( inclined to? 2).

Then, the surface contact generated due to friction between the throttle valve 40 and the guide tube 22 of the throttle body 10 is to be point contact.

The inclination angle θ2 of the outer circumferential surface of the throttle valve 40, that is, the angle θ2 that the outer circumferential surface of the throttle valve 40 forms with the inner circumferential surface of the guide tube 22 of the throttle body 10, the inclination angle of the throttle valve 40. It is formed so as to be made at the same angle (θ2 = θ1) as θ1).

Since the inclination angle θ1 of the throttle valve 40 is inclined at approximately 4 degrees, the inclination angle θ2 of the outer circumferential surface of the throttle valve 40 is also inclined at 4 degrees, so that the throttle valve 40 wears out due to friction during opening and closing of the throttle valve 40. The throttle valve 40 is prevented from being pushed into the guide tube 22 of the body 10.

The throttle valve of the automobile engine according to the present invention configured as described above is connected to the throttle cam 14 and the accelerator pedal of the throttle body 10 provided on one side of the engine when the driver presses the accelerator pedal as in the related art. The throttle cam 14 is rotated by a predetermined amount, the rotation shaft 16 is rotated by the rotation of the throttle cam 14, the throttle valve 40 connected to the rotation shaft 16 is rotated to the throttle body 10 Since the guide tube 22 is opened, air through the air cleaner is introduced into the combustion chamber through the throttle body 10.

When the driver releases the foot from the accelerator pedal when the vehicle decelerates or stops, the throttle cam 14 of the throttle body 10 is returned to its original state by the return spring 18, and the throttle cam 14 returns. As a result of the rotation shaft 16 and the throttle valve 40 interlocked with the throttle cam 14, the throttle valve 40 closes the guide tube 22 of the throttle body 10.

In addition, the throttle valve 40 operated as described above is inclined while maintaining a predetermined angle θ2 with the guide tube 22 of the throttle body 10, and the throttle valve 40 of the throttle body 10 is inclined. Since the point of contact with the guide tube 22 prevents the throttle valve 40 from being pressed into the guide tube 22 of the throttle body 10 due to the frictional resistance generated when the throttle valve 40 is operated. It becomes possible.

As described above, the throttle valve structure of the automobile engine of the present invention is a throttle valve is operated by the operator to operate the accelerator pedal, the throttle valve is pressed into the guide tube due to friction with the inner peripheral surface of the guide tube of the throttle body It is useful to improve the pedaling force of the throttle valve according to the operation of the accelerator pedal.

Claims (1)

In the throttle valve 12 provided in the vehicle throttle body 10, The angle formed between the outer circumferential surface of the throttle valve 40 and the guide tube 22 of the throttle body 10 is formed to be inclined at a predetermined angle θ2, and the inclination angle θ2 of the outer circumferential surface of the throttle valve 40 is throttled. A throttle valve structure for an automotive engine, characterized in that it is formed so as to have an angle (θ2 = θ1) equal to the inclination angle θ1 of (40).