KR100203874B1 - Intake device of engine - Google Patents

Abstract

The valve for opening and closing the intake port and the second valve for opening and closing the second intake port can be operated at the same time by one valve opening and closing mechanism so that the engine can be configured in a simple structure by reducing the number of parts and increasing the intake filling rate. In addition to increasing the output and improving fuel economy, it is also possible to maintain an even distribution of fuel through the induction of tumble phenomena, and to push the combustion gas around the spark plugs for quick and smooth ignition propagation and prevention of misfire. A valve for opening and closing an intake bubble formed in communication with a combustion chamber in a cylinder head of the engine to provide an intake device of the engine; A spring member for touching the valve in the closing direction; A driving plate fixedly formed on the stem end of the valve and pivoting around the support according to the opening and closing operation of the valve; A second valve fixedly formed at a lower end portion of the second intake pipe forming a second intake line, the head valve being partially exposed to the combustion chamber; The valve case is fixedly formed in the extension part of the drive plate and slides up and down in accordance with the pivoting operation of the drive plate so that the lower end thereof is coupled to or disengaged from the head of the second valve to open and close the second intake port. Configured to include.

Description

Engine intake

1 is a perspective view showing an engine in which a general intake apparatus is coupled.

2 is an end view of an engine for showing a general intake apparatus.

3 is a perspective view showing an intake apparatus according to the present invention.

4 is an end view of an engine showing an intake apparatus according to the present invention.

5 is a perspective view showing a second valve of the intake apparatus according to the present invention.

6 is a perspective view showing another embodiment of a second valve according to the present invention.

7 is an end view of an engine showing an operating state of an intake apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

2: cylinder head 8: combustion chamber

10: intake port 20: valve

22, 32: stem end portion 24: drive plate

25: support 26: spring member

27: valve case 28: second intake pipe

31: second valve 30: second intake port

34: Rim 36: Head

38: hall

Industrial use

The present invention relates to an intake port structure of the engine and a valve opening and closing device, and more particularly, by opening and closing the second intake port in cooperation with the main valve of the intake device, thereby promoting atomization of fuel and activating the flow of the mixer. It relates to an intake apparatus of an engine that can be made.

Prior art

In general, the engine is provided with a combustion chamber formed by a cylinder head, a cylinder block to which the cylinder head is coupled, and a piston coupled to the bore of the cylinder block to enable linear reciprocating motion.

Such a combustion chamber is provided with an explosive force due to combustion, so that the piston can be supplied with a mixer that provides power to perform a linear reciprocating motion, the supply of the mixer is installed in the cylinder head in communication with the combustion chamber It is made by the device.

The intake apparatus as described above provides an intake port formed in the cylinder head so as to communicate with the combustion chamber in a state of being opened and closed by an intake valve, and a plurality of second intake ports formed at positions adjacent to the intake port.

These intake ports are in communication with the manifold coupled with the cylinder head, so that a large amount of mixer or air can be intake into the combustion chamber.

However, the conventional intake apparatus as described above requires a separate valve opening and closing mechanism for opening and closing each intake port for opening and closing a plurality of intake ports, thereby increasing the number of parts and complicating the engine structure. There is a drawback to this.

Summary of the Invention

The present invention has been made to solve the above-mentioned disadvantages, the object of the present invention is to enable the opening and closing of a plurality of intake ports at the same time by one valve opening and closing mechanism of a small number of parts and simple structure To provide an intake apparatus.

In order to realize this, the present invention includes a valve for opening and closing the intake port formed to communicate with the combustion chamber of the cylinder head of the engine; A spring member for touching the valve in the closing direction; A drive plate coupled to the stem end of the valve; A second valve extending from the second intake pipe to partially expose the combustion chamber to a position of the second intake port; It provides an intake apparatus of the engine, characterized in that it comprises a valve case fitted to be slidably coupled to the second intake port in a state coupled to the extension of the drive plate.

The second valve is fixed to the stem end portion at the center of a plurality of rims formed at the end of the second intake pipe so that the second intake pipe and the combustion chamber can communicate with each other. It is characterized in that the head portion to be inserted into the hollow of the case so that the second intake pipe and the combustion chamber can be blocked.

In another embodiment, the second valve allows the lower end of the second intake pipe to be sealed while being partially exposed to the combustion chamber, and allows the second intake pipe to communicate with the combustion chamber, or when combined with the valve case. By the plurality of holes are blocked by the plurality of holes is characterized in that a plurality of holes are drilled in the lower side wall of the second intake pipe so that the second intake pipe and the combustion chamber can be blocked.

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

EXAMPLE

1 and 2 are diagrams showing an engine to which the present invention relates, in which the engine is usually a cylinder head 2, a cylinder block 4 to which the cylinder head 2 is coupled, and a bore of the cylinder block 4; The combustion chamber 8 formed by the piston 6 joined so that linear reciprocation can be provided is provided.

As described above, the combustion chamber 8 is configured to communicate with the intake port 10 and the exhaust port 12 formed in the cylinder head 2 such that a mixer or air can be intaked or the combustion gas can be exhausted.

The intake port 10 and the exhaust port 12 are opened and closed by a valve opening / closing mechanism to control the flow of the mixer, air, and combustion gas.

In particular, the intake port 10 according to the present invention is poured into the surge tank 14 so as to be in communication with the intake manifold 16 in which the mixer or air is distributed, and is coupled to the intake manifold 16. The surge tank 14 is coupled to the throttle body 18 having a throttle valve which is opened and closed to adjust the flow rate of the mixer or air.

On the other hand, the intake apparatus according to the present invention is provided with a valve 20 for opening and closing the intake port 10, the valve 20 is the stem end portion as shown in FIG. The drive plate 24 is fixedly formed on the 22, and the support plate 24 is supported in the closing direction by the spring member 26 fitted to the valve 20 so as to be supported on the upper wall of the drive plate 24 and the cylinder head 2. To be.

The drive plate 24 is pivoted on the base plate 25 by a support 25 protruding from the cylinder head 2, and the valve case 27 is erected upright at the extension end thereof. It is fixed to form.

The valve case 27 is interlocked with the valve 20 in a state in which the valve case 27 overlaps with the second intake pipe 28 forming the second intake line, and the second intake pipe 28 is formed in the second intake port 30. To be able to slide from

At the end of the second intake pipe 28 as described above, a second valve 31 partially exposed to the combustion chamber 8 is formed to be coupled. The second valve 31 is shown in FIG. As described above, the stem end portion 32 is fixed to a central portion of the plurality of rims 34 formed at the end of the second intake pipe 28 so that the second intake pipe 28 and the combustion chamber 8 communicate with each other. To be.

In addition, the head 36 extending from the lower end of the stem end 32 is coupled to or disengaged from the end of the valve case 27 during sliding operation of the valve case 27 so that the second intake pipe 28 By opening and closing the second intake pipe 28 so that the combustion chamber 8 and the combustion chamber 8 can be in communication with each other or blocked, the mixer or air through the second intake pipe 28 can be intake or blocked in the combustion chamber (8). To make it work.

On the other hand, the second valve 27, as shown in FIG. 6 as another embodiment, is to be sealed in a state in which the end portion of the second intake pipe 28 is partially exposed to the combustion chamber (8).

In addition, the end side wall of the second intake pipe 28 is provided with a plurality of holes 38 so that the holes 28 are opened and closed by the valve case 27 during the sliding operation of the valve case 27, As the second intake pipe 28 and the combustion chamber 8 are blocked or communicated with each other, the intake of the mixer or air can be inhaled or blocked by the combustion chamber 8.

The intake apparatus of the engine according to the present invention as described above allows the valve 20 to open and close the intake port 10 by one cam mechanism as shown in FIG. 7 to intake through the intake port 10. The air supplied to the manifold 16 is made to intake to the combustion 8.

At this time, the drive plate 24 coupled with the valve 20 is pivoted around the support 25 to allow the valve case 27 coupled with the drive plate 24 to slide up and down.

Accordingly, the mixer or air enters the combustion chamber 8 through the second intake port 30 by the end of the valve case 27 and the head 36 of the second valve 31 engaged or disengaged. By allowing intake, the air intake rate of the engine is increased to allow combustion to occur at an air-fuel ratio close to the theoretical air-fuel ratio.

In addition, the air drawn in through the second intake port 30 is introduced into the combustion chamber 8 and induces a tumble in the combustion chamber 8, thereby inducing an even distribution of fuel and stagnating around the spark plug. Allow the combustion gas to be pushed out.

[Effects of the Invention]

The intake port structure and valve opening and closing device of the engine according to the present invention as described above allows the engine to be configured with a simple structure of a small part in which the second intake port is simultaneously opened and closed by one valve opening and closing mechanism. In addition, the air intake filling rate can be increased to increase output and fuel economy, and the tumble phenomenon can lead to even distribution of fuel and combustion gas around the spark plug, so that rapid and smooth ignition propagation prevention can be expected. This has the advantage.

Claims (3)

A valve 20 for opening and closing the intake port 10 formed in communication with the combustion chamber 8 in the cylinder head 2 of the engine; A spring member 26 for touching the valve 20 in the closing direction; A driving plate 24 fixedly formed at the stem end 22 of the valve 20 and pivoting about the support 25 according to the opening and closing operation of the valve 20; A second valve 31 fixedly formed at a lower end portion of the second intake pipe 28 forming a second intake line, the head 36 being partially exposed to the combustion chamber 8; It is fixedly formed in the extension of the drive plate 24 so as to slide up and down in accordance with the turning operation of the drive plate 24 so that the lower end is coupled or disengaged with the head portion 36 of the second valve (31). Intake apparatus of the engine, characterized in that configured to include a valve case 27 for opening and closing the second intake port (30) The engine of claim 1, wherein the second valve 31 is configured such that the stem end portion 32 is fixed to the center of a plurality of rims 34 formed at the lower end of the second intake pipe 28. Intake device. According to claim 1, The second valve 31 is formed in a closed state of the lower end surface of the second intake pipe 28 to be partially exposed to the combustion chamber (8), thus the portion exposed to the combustion chamber (8) The intake apparatus of the engine, characterized in that a plurality of holes (38) to be opened and closed by the valve case (27) is drilled in the wall.