KR100203177B1 - Throttle valve for engine of engine - Google Patents

Abstract

The present invention reduces the flow rate flowing in the low speed region by varying the valve opening speeds in the low speed region and the high speed region, while allowing a large flow rate to flow in the high speed region so as to obtain a stable output in each speed region. Provided is a throttle valve device for a vehicle engine. The present invention is a throttle valve device of an engine for a vehicle configured to control the flow rate flowing through the mixer passage in accordance with the degree of pedaling of the accelerator pedal, the mixer passage is divided into two passage portions to open and close the passage portion in each mixer passage portion First and second throttle valves rotatably installed, and coaxially installing the first and second throttle levers of the tooth structure on the central axis of rotation of the first and second throttle valves, and the second throttle An intermittent gear that moves independently in this section in a certain section of the lever is installed so as to be elastically supported in a clockwise direction under the interposition of the spring, so that the first throttle in the initial stage, that is, in the low speed region, is displaced by the wire connected to the first throttle lever. Only the valve opens and the second throttle valve opens according to the opening degree of the first throttle valve from the point of view of the high speed region. It is configured to.

Description

Throttle valve device for vehicle engine

The present invention relates to a throttle valve device for a vehicle engine that controls the amount of air or mixer to be sucked into the engine of a motor vehicle.

In an engine of a vehicle, a throttle valve device is a device for controlling the amount of air or a mixer that is connected to an accelerator pedal by a linkage or a wire, and opens and closes a valve by rotating a thin disc about a central axis. Butterfly valves are mainly used.

A typical example of the throttle valve device as described above is shown in FIG. 1, which is briefly described as follows.

As shown, a general throttle valve device is provided with a throttle valve 2 rotatably installed on the mixer passage 1 and a rotational shaft 2a of the throttle valve 2 and connected to the wire 3. And a throttle lever 4 which is connected to a low accelerator pedal (not shown) and moves the throttle valve 2.

In the throttle valve device as described above, when the accelerator pedal is pressed, the throttle lever 4 connected with the wire 3 is rotated according to the degree of stepping force, and the throttle valve 2 installed to interlock with the lever 4 is centered. Rotation about the axis 2a opens or closes the mixer passage 1.

However, the throttle valve device of a general vehicle engine as described above is configured such that the throttle valve is always opened constantly with respect to the displacement of the wire, so that the inflow of excessive flow rate in the low speed region has been pointed out as a problem. In other words, in the low speed region, ie the first throttle valve opening time, it is necessary to reduce the change of the incoming flow insensitively to the displacement of the wire. By constantly opening the throttle valve, there has been a problem of incomplete combustion due to rapid start and rapid inflow of air due to the rapid increase in flow rate in the low speed region.

The present invention has been made in view of the above, and by varying the valve opening speed in the low speed region and the high speed region, the change of the flow rate flowing in the low speed region is reduced, while the large flow rate is introduced in the high speed region, respectively. It is an object of the present invention to provide a throttle valve device for a vehicle engine to obtain a stable output in the speed range of the engine.

1 is a schematic view showing the structure of a conventional general throttle valve device.

2 is a schematic view showing the structure of a throttle valve device according to the present invention.

Figure 3 is a side view of Figure 2 showing the operating structure of the throttle valve device according to the present invention.

* Explanation of symbols for main parts of the drawings

10a, 10b: mixer passage portion 11, 12: first and second throttle valve

11a, 12a: central axis of the throttle valve 21, 22: first and second throttle lever

22a: intermittent gear 30: wire

40: spring

The object of the present invention as described above, in the throttle valve device of the vehicle engine is configured to control the flow rate flowing through the mixer passage in accordance with the pedal pedal degree of the pedal, the mixer passage is divided into two passage portions each mixer passage portion And rotatably installing first and second throttle valves for opening and closing the passages, and coaxially installing the first and second throttle levers of the tooth structure on the rotation center axes of the first and second throttle valves. In addition, the intermittent gear moving independently in this section is installed in a predetermined section of the second throttle lever so as to be elastically supported in a clockwise direction under the interposition of a spring, so that the initial, ie, low speed of the wire is connected to the first throttle lever. In the region, only the first throttle valve is opened and the second throttle is changed according to the opening degree of the first throttle valve. Is achieved by providing a throttle valve device for a vehicle engine, it characterized in that the valve is configured to open.

In the throttle valve device of a vehicle engine according to the present invention, the intermittent gears of the first throttle lever and the second throttle lever are engaged with each other in the initial stage, that is, in the low speed region, with respect to the displacement of the wire moving according to the pedal pedal's degree of pedaling. Even if the throttle lever rotates, the second throttle lever does not rotate for a predetermined period. Therefore, in the low speed region, only the first throttle valve is opened so that the mixer is introduced through one mixer passage part, so that the change in flow rate can be reduced. On the other hand, when the continuous displacement of the wire, the intermittent gear of the second throttle lever is rotated together with the second throttle lever out of the independent movement section, from which point the first throttle valve and the second throttle valve Opening at the same time results in the inflow of the mixer through the two part mixer passage. In other words, a lot of air flows in the high speed region.

EXAMPLE

Best Mode for Carrying Out the Invention Preferred embodiments of the present invention will now be described based on the accompanying drawings.

2 is a schematic view showing the structure of the throttle valve device according to the present invention, and FIG. 3 is a side view of FIG. 2 showing the operation structure of the throttle valve device according to the present invention.

As shown, the throttle valve device of the vehicle engine according to the present invention has a throttle for opening and closing these passage portions in each passage portion 10a, 10b of the mixer passage divided into two mixer passage portions 10a, 10b. The valves 11 and 12 are rotatably provided in the shafts 11a and 12a, respectively.

The first and second throttle levers 21 and 22 having a toothed structure are coaxially provided on the rotation center shafts 11a and 12a of the respective throttle valves 11 and 12. The first throttle lever 21 is connected to a wire 30 connected to an accelerator pedal (not shown).

In a certain section of the second throttle lever 22, the intermittent gear 22a is installed to rotate independently in this section, and the intermittent gear 22a is always elastic in the clockwise direction by the spring 40. Supported.

Therefore, the intermittent gear portion 22a of the first throttle lever 21 and the second throttle lever 22 is engaged with each other in the initial and low speed region with respect to the displacement of the wire 30, so that the rotation of the first throttle lever 21 is prevented. The interlocking first throttle valve 11 is opened to rotate.

Since the first throttle lever 21 is rotated in engagement with the second throttle lever 22 while the first throttle lever 21 is moved out of the intermittent gear portion 22a, the first and second throttle valves interlock with each rotation of the lever. (11) (12) are opened at the same time, and eventually all of the valves are completely opened to obtain the fastest speed.

Here, when the first throttle lever 21 and the second throttle lever 22 are referred to as a radius of the first throttle lever 21 and a radius of the second throttle lever 22 is r, Rr The opening speed of the second throttle lever 22 is faster than that of the first throttle lever 21 and formed in a size relationship satisfying the condition of. That is, with R / r = α, the value of α has a value that is fully opened by the second throttle lever 22 when the first throttle valve 11 is fully opened (θ = 90 °).

In the throttle valve device of a vehicle engine according to the present invention, since the intermittent gear portion 22a of the second throttle lever 22 rotates while the first throttle lever 21 is rotated by a predetermined angle, the first throttle valve 11 ) Is opened, but the second throttle valve 12 is closed until the intermittent gear 22a contacts the second throttle lever 22. Therefore, the change of the flow volume which enters in a low speed area | region becomes small.

Subsequently, when the acceleration is gradually accelerated, the intermittent gear portion 22a is brought into contact with the second throttle lever 22 by the first throttle lever 21 to start the second throttle valve 12 to open, and the inflow of the flow rate It will increase gradually. In other words, in the high speed region where a lot of air is required, the flow rate is introduced through the two mixer passages so that the necessary mixer is supplied.

As described above, the present invention controls the amount of the mixer flowing into the engine according to the speed appropriately, for example, in the low speed region and in the high speed region.

Therefore, it is possible to prevent the rapid start and incomplete combustion phenomenon caused by the rapid inflow of a large amount of air in the conventional low speed region.

As described above, the throttle valve device of a vehicular engine according to the present invention is provided with two throttle valves on the mixer passage, and the opening speed of the valve is configured to be different in the low speed region and the high speed region, thereby reducing the flow rate in the low speed region. While the inflow is made small, the inflow of the flow rate is increased in the high speed region, thereby preventing the incomplete combustion caused by the rapid start and the rapid inflow of air caused by the rapid increase in the flow rate in the low speed region. That is, it is possible to obtain a stable output in each speed range, thereby improving the performance of the engine.

In the above, one embodiment for implementing a throttle valve device for a vehicle engine according to the present invention has been illustrated and described. However, the present invention is not limited to the above-described embodiment, and the gist of the present invention as claimed in the following claims. Various changes can be made by those skilled in the art without departing from the scope of the present invention.

Claims (2)

A throttle valve apparatus for a vehicle engine configured to control a flow rate flowing through a mixer passage in accordance with a pedal pedal degree, wherein the mixer passage is divided into two passage portions, and the first and second passage portions divide and open the passage portions in each mixer passage portion. The second throttle valve is rotatably installed, and the first and second throttle levers of the tooth structure are coaxially installed on the rotation center axes of the first and second throttle valves, and a predetermined section of the second throttle lever is provided. In this section, the intermittent gear moving independently in this section is installed so as to be elastically supported in a clockwise direction through a spring, so that only the first throttle valve is opened in the initial, ie low speed region, with respect to the displacement of the wire connected to the first throttle lever. Configured to open the second throttle valve in accordance with the opening degree of the first throttle valve from the viewpoint of the high speed region Throttle valve device for a vehicle engine according to claim. The method of claim 1, wherein when the radius of the first throttle lever is referred to as R and the radius of the second throttle lever is referred to as r, the first and second throttle levers are formed to satisfy the condition of Rr. Throttle valve device for vehicle engine.