KR19990040027A - Air Volume Control Valve for Automotive Throttle Body - Google Patents

Abstract

The present invention relates to an air volume control valve of a vehicle throttle body, a venturi tube (10) having a plurality of hinge holes (11) (12) (13) (14) and a stepped vertical bending portion for airtightness on one side. And a plurality of valves (20, 20a) formed by forming (21) (21a) and forming square shafts (22) (22a) and cylindrical shafts (23) (23a) integrally at upper and lower ends of the vertical bent portion. The end of the square shaft 22 is formed integrally with the fixing groove 22-1 and the hole 22-2, and a plurality of stud gears having a fastening hole 30-1 inserted into the square shaft 22 are formed. 30, 30a, the ball 40, and the ring stopper 50 are inserted into the fixing groove 22-1, and the threads 60a and 60b are formed on both sides to engage with the stud gear, and the upper end thereof. Fixing for fixing the screw hole (60c) for inserting the connection member 70 for connecting with the accelerator cable and the return spring (80) connected to the hole (22-2) The rack (60d) integrally formed by the rack gear 60 is to minimize the interference with the new device.

Description

Air Volume Control Valve for Automotive Throttle Body

The present invention relates to an air volume control valve of a throttle body for an automobile, and in particular, the throttle valve provided inside the throttle body is separated and opened so as to separate and open the split type to minimize intake resistance due to interference with the wearer. It is designed to improve responsiveness and improve acceleration and fuel economy.

In general, a vehicle is used as a transport means to move the road surface by rotating the drive wheel using the power generated by the engine, the process of generating power using the engine is made of cast iron formed of a plurality of cylinders integrally While the piston inserted inside the cylinder block moves up and down, the injector is compressed by suction or compression of the mixer mixed with fuel into the space between the wall of the cylinder and the piston head which is the upper part of the piston. By injecting fuel into it and igniting it, thereby converting the linear expansion force generated during the ignition into a rotary motion using a medium called a connecting rod and a crankshaft. Means, clutches and transmissions, propulsion shafts and differential fields. To thereby rotate the drive wheel shelter.

In order to prevent the engine from being damaged by the high heat generated during ignition, the cooling water is circulated inside the cylinder block and the head to prevent the engine from becoming above an appropriate temperature, thereby extending the life of the engine and maintaining the output at the same time. To make it possible.

The process in which the mixer mixed with the outside air and the fuel is sucked into the cylinder of the engine, as shown in FIG. 4, the outside air sucked into the air cleaner 200 is debris by an element (not shown) provided therein. While moving to the throttle body 100 which is connected to the accelerator pedal in this state, it passes through the venturi tube 110 as shown in FIG. 5.

As the air flows into the venturi tube 110, the flow velocity is accelerated by the difference in the cross-sectional area, and the internal pressure is lowered. The fuel is sucked up by the internal pressure and diluted with the air flowing into the venturi tube. The tank 300 is collected.

The mixer collected by the surge tank 300 is sucked into each cylinder by opening the intake valve provided in the cylinder head, and then passed through the exhaust manifold 500 through the process of compression, ignition and exhaust. Then release into the atmosphere.

In the venturi tube 110 provided inside the throttle body 100, the inlet side I has a smaller cross-sectional area than the discharge side II, and one side of the inlet side I is formed by an accelerator cable. It is provided with a valve 120 to open and close.

The operation in the throttle body configured as described above will be described with reference to the opening / closing amount of the valve shown in FIG. 5.

Immediately after the vehicle is started or at a low speed, as shown in FIG. 5A, the valve 120 formed at the inlet side I of the venturi tube 110 is almost closed, so that the air inflow amount This is minimized and the internal pressure is increased so that the amount of fuel injected (the amount mixed with the outside air) is small, and the engine output remains low.

In this state, the accelerator pedal is gradually stepped on, and at the same time, the valve 120 connected to the cable is opened and closed (b of FIG. 5), and as the inflow of air increases, the output gradually increases.

At the same time, the accelerator pedal is further pressed in the state where the output is increased, and the valve 120 is in the fully opened state, thereby increasing the amount of air inflow and the amount of fuel discharged, thereby generating the maximum output of the engine.

However, when the engine speed is shifted from low speed to medium speed, the valve installed at the inlet side is inclined to open so that interference occurs due to the outside and the inclined surface of the valve, which causes vortex flow. There was a problem in that it does not occur in the discharge shaft that is the rear surface is generated in the front surface to act as a cause for inhibiting the inflow of outside air.

In addition, this problem has caused a problem that the response of the engine is lowered.

Accordingly, the present invention has been made to solve the above problems to provide an air volume control valve of the vehicle throttle body to open and close by throttling the throttle valve provided on the inside of the venturi tube.

1, a, b, c is a schematic illustration of a state in which the opening and closing amount of the air volume control valve according to the present invention is divided into low speed, medium speed and high speed,

Figure 2 is an exploded perspective illustration of the air flow control valve according to the present invention,

3 is an operational state diagram of an air flow control valve according to the present invention;

3a and 3b show the opening / closing amount of the valve at low speed and high speed.

4 is a schematic illustration showing a conventional air flow;

5A, 5B and 5C are exemplary views of a state in which the opening and closing amount of the throttle valve according to the prior art is divided into a low speed, a medium speed, and a high speed;

* Description of the symbols for the main parts of the drawings *

10; Venturi tube 11, 12, 13, 14; hinge hole

21, 21a; vertical bend 20, 20a; valve

22, 22a; square shaft 22-1; fixing groove

22-2; hole 23, 23a; cylindrical shaft

Stud gear 30-1; fasteners

40; ball 50; ring stopper

60; rack gear 60a, 60b; screw thread

60c; screwdriver 60d;

70; connecting member 80; return spring

According to an aspect of the present invention, there is provided a throttle valve configured to be operated by an accelerator pedal inside a venturi tube, the venturi tube including a plurality of hinge holes; A stepped vertical bent portion for airtightness is formed on one side, and a plurality of valves are formed integrally with a square shaft and a cylindrical shaft at upper and lower ends of the vertical curved portion, and the ends of the square shaft are integrally formed with a fixing groove and a hole. And a plurality of stud gears and balls having fastening holes inserted into the square shafts, and ring stoppers for preventing the balls from falling back, are inserted into the fixing grooves, and the threads are formed on both sides to be engaged with the stud gears. It consists of a screw gear for inserting the connecting member for connecting the accelerator cable to the upper end and a rack gear integrally formed with the fixing part for fixing the return spring connected to the hole, thereby minimizing the resistance of the outside air to be sucked. In addition to improving the performance, and to improve the sense of acceleration and fuel economy.

Hereinafter, the configuration and operation of an embodiment of the present invention with reference to the accompanying drawings.

A valve fixed and operated to be operated by a cable connected to an accelerator pedal inside an venturi tube provided inside the throttle body, the rack being configured to simultaneously open and close a plurality of valves 20 and 20a to the inside of the venturi tube. The gear 60 and the stud gear 30, 30a is configured, but one side of the stud gear is composed of a rack gear 60 connected to the accelerator cable.

The valves 20 and 20a are provided at the inside of the venturi tube to open and close the induction at the same time so as to minimize the resistance of the air flowing therein. Both sides of the venturi tube 10 to fix the valve are provided. The hinge holes 11, 12, 13 and 14 are formed, and on one side thereof, stepped vertical bent portions 21 and 21a for airtightness are formed. (22) (22a) and cylindrical shafts (23) and (23a) are integrally formed.

At the end of the square shaft 22, a plurality of fastening holes 30-1 are formed integrally with the fixing groove 22-1 and the hole 22-2, and the fastening holes 30-1 are inserted into the square shaft 22. After inserting two stud gears 30 and 30a, a ring stopper 50 for preventing the ball 40 and the ball 40 from being separated from the square shaft is inserted into the fixing groove 22-1. It consists of doing.

In addition, the threads 60a and 60b of the rack gear are in contact with the center of the stud gear 30 and 30a, but the rack gear 60 has a connection member 70 for connecting with the accelerator cable. It consists of integrally forming the fixing part 60d for fixing the screw hole 60c for insertion and the return spring 80 for connecting to the hole 22-2 of the said square shaft.

The operation of the present invention configured as described above will be described with reference to the valve opening / closing amount at low speed and high speed, which are operating state diagrams of the air amount control valve as shown in FIG. 3.

When the engine is in a low speed state, the rack gear 60 provided on the outside of the venturi tube 10 is not moved because the accelerator pedal is almost stepped on, so that the valve 20, 20a is also venturi tube. It is in close contact with the inner diameter of (10) so that only a minimum of air is allowed to flow so that the engine speed is low.

In this state, the accelerator pedal is gradually pressed and at the same time tension is generated in the cable, so that the rack gear 60 fixed to the end thereof is moved to the right side, and the thread 60a on both sides is moved by the movement of the re rack gear 60. Stud gear 30, 30a in contact with (60b) will start to rotate.

As the square shafts 22 and 22a rotate as the stud gears 30 and 30a rotate, the valves 20 and 20a rotate in a counterclockwise direction, thereby increasing the space in which outside air can be introduced. .

At this time, as the return spring 80 connected to the fixed portion 60d of the rack gear 60 increases, the elastic force is increased, and the first state is released by the elastic force of the return spring 80 when the foot spring is released from the accelerator pedal. Move rapidly to close the valve.

At high speed, the valves are opened in parallel to maximize the amount of outside air sucked through the three flow paths, so that the output is increased in proportion to this, and the engine responsiveness is increased.

As described above, the present invention has an effect of improving the responsiveness and output of the engine by quickly adjusting the inflow of external air by using a valve provided inside the venturi tube.

Claims (1)

In the valve which is hinged to be operated by a cable connected to the accelerator pedal inside the venturi tube provided inside the throttle body, A venturi tube 10 having a plurality of hinge holes 11, 12, 13, and 14 formed on both sides and a stepped vertical bent portion 21, 21 a for airtightness are formed on one side, and the vertical bend is formed. A plurality of valves 20 and 20a formed by integrally forming the square shafts 22 and 22a and the cylindrical shafts 23 and 23a at both ends of the upper and lower sides, and the ends of the square shafts 22 are fixed. A plurality of stud gears 30 and 30a and a ball 40 having grooves 22-1 and holes 22-2 formed integrally and having fastening holes 30-1 inserted into the square shafts; A ring stopper 50 for preventing the ball from falling back is inserted into the fixing groove 22-1, and the threads 60a and 60b are formed on both sides to engage with the stud gear, and the accelerator cable is connected to the upper end thereof. The fixing part 60d for fixing the screw hole 60c for inserting the connecting member 70 to be connected to and the return spring 80 connected to the hole 22-2. Air volume control valve of the throttle body for a vehicle, characterized in that consisting of a rack gear 60 formed by.