KR200219650Y1 - Intake and exhaust passage variable control device of engine - Google Patents

Abstract

The present invention relates to a variable control device of the intake and exhaust passages of the engine, and in particular, by installing a disc valve on the intake and exhaust passage so that the opening area varies according to the rotational speed of the engine, the performance of the engine is improved by the optimum intake and exhaust passage control. An intake and exhaust passage variable control device of an engine.

The present invention is a drive shaft 50 is rotated by receiving the rotational power of the crankshaft and the worm gear teeth formed around the through hole 62 is engaged with the drive shaft 50 is rotated and coincided with the intake and exhaust passage (40) The disk-shaped valve 60 and the variable diaphragm 70 for varying the opening area of the through-hole 62 in proportion to the rotational speed of the disk-shaped valve 60 is characterized in that it is configured.

Description

Intake and exhaust passage variable control device of engine

The present invention relates to a variable control device of the intake and exhaust passages of the engine, and in particular, by installing a disc valve on the intake and exhaust passage so that the opening area varies according to the rotational speed of the engine, the performance of the engine is improved by the optimum intake and exhaust passage control. An intake and exhaust passage variable control device of an engine.

The intake and exhaust passage of the conventional engine is formed in the cylinder head 1 so as to communicate with the combustion chamber 10 from the intake and exhaust manifold as shown in FIG. 1, and can be divided into the intake port 12 and the exhaust port 14.

The intake port 12 is a passage formed so that air or mixed gas flows into the combustion chamber 10 from the intake manifold, and the exhaust port 14 escapes the exhaust gas combusted in the combustion chamber 10 toward the exhaust manifold. It is a passage formed to exit. The intake and exhaust passage is streamlined to minimize intake and exhaust resistance, and has a circular cross section as shown in FIG. 2.

In addition, the air and the exhaust gas introduced or discharged through the intake and exhaust passages flow in conjunction with the opening and closing timing of the valve 5.

In the intake and exhaust passages of the engine formed as above, the straight or large intake port 12 is effective for introducing a large amount of air or mixed gas at a time. However, when a large amount of mixed gas or unburned gas flows into the combustion chamber 10, the mixed gas or unburned gas is discharged together with the exhaust gas through the exhaust port 14 without burning a part of the mixed gas.

Here, the automobile engines currently subject to the regulation of the exhaust gas cope with the regulation by temporarily adjusting the ignition timing and reviewing the valve timing, but a more fundamental solution is the mixed gas combustion efficiency in the combustion chamber 10. There is a need to improve itself. The same applies to the intake port 12 providing the optimum air or mixed gas to increase the mixed gas filling efficiency in the combustion chamber 10 so as to smooth out the exhaust gas.

However, since the intake and exhaust passages of the conventional engine constructed and operated as described above are determined by the opening amount of the throttle valve and the valve timing regardless of the rotational speed of the engine, the combustion efficiency is reduced according to the rotational speed of the engine and the performance of the engine is reduced. There is also a problem that is lowered.

The present invention has been made to solve the above problems, by varying the opening amount of the intake and exhaust port in accordance with the rotational speed of the engine to improve the combustion efficiency with the optimum intake and exhaust passage control, thereby improving the performance of the engine It is to provide a variable control device for the intake and exhaust passages of the engine.

1 is a cross-sectional view showing an intake and exhaust passage of a conventional engine;

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a front view showing a variable intake and exhaust path of the engine according to the present invention.

<Explanation of symbols for main parts of drawing>

40: intake and exhaust passage 50: drive shaft

60: disc type valve 62: through hole

64: central axis 70: variable aperture

72: plate slider 74: inertial weight

76: return spring 78: tension spring

According to an aspect of the present invention, there is provided a variable control device for an intake and exhaust passage of an engine, the drive shaft being rotated by receiving rotational power of a crankshaft and having a worm gear formed thereon, the intake and exhaust passage being engaged with the drive shaft. And a variable diaphragm for varying the opening area of the through hole in proportion to the rotational speed of the disc valve.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention.

As shown in FIG. 3, the intake / exit passage variable control device of the engine according to the present invention is rotated by receiving the rotational power of the crankshaft and is engaged with the drive shaft 50 and the drive shaft 50 having a worm gear tooth formed therein. A disk-shaped valve 60 having a through-hole 62 that is rotated and coincides with the intake and exhaust passage 40, and a variable for varying the opening area of the through-hole 62 in proportion to the rotational speed of the disk-type valve 60. The diaphragm 70 is comprised.

Here, the drive shaft 50 is preferably located in the cylinder head is installed to receive the rotational power of the crank shaft with the cam shaft.

The disc-shaped valve 60 is fixed to the cylinder head so that its central axis 64 is rotatable and is orthogonal to the intake and exhaust passage 40.

In particular, the variable diaphragm 70 includes a plurality of plate sliders 72 rotatably fixed to one surface of the disc-shaped valve 60 to block the through holes 62, and the plurality of plate sliders 72. And the inertial weight 74 which adjusts the amount of opening of the plate-shaped slider 72 according to the magnitude of the centrifugal force, and pushes the inertial weight 74 in the direction of the central axis 64 of the disc-shaped valve 70. The main body is composed of a return spring 76 and a tension spring 78 connected between the plurality of plate-shaped sliders 72 and pulling in a direction in which the opening area of the through hole 62 is reduced.

Referring to the operation of the variable intake and exhaust path of the engine according to the present invention is configured as described above are as follows.

Since the drive shaft 50 according to the present invention rotates by receiving the rotational power of the crankshaft, when the rotational speed of the engine increases, the rotational speed of the drive shaft 50 also increases, and the rotational speed of the engine decreases. The rotation speed also slows down.

Therefore, the disk type valve 60 in which the outer circumference is engaged with the drive shaft 50 is also determined in proportion to the rotational speed of the engine.

Here, when the rotational speed of the disc-shaped valve 60 is increased, the inertial weight 74 is moved in the circumferential direction by the centrifugal force, and the plate-shaped slider 72 blocking the through hole 62 is the centrifugal force and the inertial weight 74. By the two sides. Therefore, the opening area of the through-hole 62 of the disc-shaped valve 60 is increased, so that a larger amount can be taken in and exhausted when the engine rotation speed is increased.

On the contrary, when the rotational speed of the engine becomes slow, the rotational speed of the disc-shaped valve 60 is also slowed down so that the inertial weight 74 is moved in the direction of the central axis 64 by the return spring 76, and the plate-shaped slider 72 is also tensioned. Pulled by the spring 78 to block the through-hole 62 to reduce the opening area in communication with the intake and exhaust passage 40.

The intake / exhaust passage variable control device of the engine according to the present invention constructed and acting as described above variably adjusts the opening area of the intake / exhaust passage in accordance with the rotational speed of the engine, thereby improving combustion efficiency by automatically controlling the intake / exhaust amount. It also has the advantage of improving performance.

Claims (2)

A drive valve which is rotated by the rotational power of the crank shaft and has a worm gear formed therein; a disk valve having a through hole engaged with the drive shaft and coinciding with the intake and exhaust passage; and in proportion to the rotational speed of the disk valve. An intake and exhaust passage variable control device comprising: a variable aperture for varying the opening area of a through hole; The method of claim 1, The variable diaphragm is positioned between the plurality of plate sliders rotatably fixed to one surface of the disc-shaped valve to block a part of the through hole, and the amount of opening of the plate slider according to the size of the centrifugal force located between the plurality of plate sliders. It consists of an inertial weight for adjusting the, a return spring for pushing the inertial weight in the direction of the center axis of the disk-shaped valve, and a tension spring connected between the plurality of plate-shaped slider to pull the opening area of the through hole is reduced An intake and exhaust passage variable control device of an engine, characterized in that.