KR960007390Y1 - Swirl-control device - Google Patents

Abstract

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Description

Car Intake Swirl Control

1 is a plan view of the engine in which the intake swirl adjusting device of the present invention is installed.

2 is a view showing the installation state of the intake swirl adjusting device according to the present invention

Figure 3 is a side cross-sectional view of the main part of the intake swirl adjusting device according to the present invention

4 is an exploded perspective view of the valve plate and the rotating shaft according to the present invention

5 is a view for explaining a conventional swirl adjusting device.

* Explanation of symbols for main parts of the drawings

11 intake manifold 12 cylinder head

13 Adapter 14 Actuator

15: combustion chamber 16: straight pot

17: helical port 19: the first link

20: pin 21: second link

22: valve shaft 23: valve plate

The present invention relates to an intake swirl adjusting device for automobiles, and more particularly, to an intake swirl adjusting device that can improve the output of the engine by reducing the intake resistance of the intake air.

The fuel system of an automobile includes a fuel tank for storing fuel, a fuel pump for pumping up and extracting fuel in the fuel tank, a fuel damper for absorbing pulsations of fuel pumped from the fuel pump, and for filtering foreign substances in these fuels. It includes a fuel filter, a delivery pipe for distributing the fuel passing through the fuel filter to each injector, and a return pipe for returning the fuel into the fuel tank when the fuel pressure in the delivery pipe exceeds a specified value. .

Some vehicles are equipped with a cold start injector in the surge tank, which facilitates the ignition of gasoline when the engine is cooled, thereby making it easy to ignite.

The fuel system has been developed by a vehicle that is being carried out by electronic control and unlike the conventional carburetor vehicle to control the opening time of the valve to control the optimum fuel supply amount according to the operating conditions of the engine for the injector.

In the intake tube of the automobile engine, the air passing through the air cleaner pushes the air flow meter to the flap and the appropriate amount can be sucked into the combustion chamber according to the opening degree of the throttle valve.

The amount of air introduced at this time affects the emission in the exhaust gas and also the fuel consumption.

Recently, a lean burn engine has been developed, and a method of improving output compared to a conventional vehicle has been proposed and put into practical use even though the air fuel ratio is lean than the theoretical air fuel ratio.

These vehicles use two intake valves to increase the intake rate. One intake valve is installed in a swirl pot used only at low speeds, and the other intake valve is installed in a straight port used at high speeds. have.

In lean-burn vehicles, it is particularly desirable to minimize the intake resistance of the incoming air and to make the fuel and air mixture the ideal air-fuel ratio to improve output and reduce fuel economy.

Therefore, the throttle body, which is a substantial passage through which air flows, should be designed to reduce the resistance of the pipeline, and should be designed to reduce air flow resistance with the valve when the throttle valve opens and closes.

When the vehicle is running or idling, the amount of air required for combustion is changed, and in particular, since driving is related to the output, there is a limit in improving the output by only opening and closing the throttle valve.

Therefore, the intake port is divided into two passages so that one passage forms a spiral to form a swirling action, while the other passage installs a swirl control valve to shut off at low speed and open both passages at high speed. A large amount of air is introduced.

FIG. 5 is a view for explaining a state in which a conventional swirl control valve is installed. The intake port 1 is divided into a helical port 2 which is used only at a low speed and a straight port 3 which is opened together at a high speed. .

The straight port 3 is provided with a swirl control valve 4 which closes at low speed and opens at high speed.

The swirl control valve 4 is controlled by the actuator to open and close the ECU. As shown in FIG. 5, the swirl control valve 4 is installed across the straight port 3.

Therefore, when the valve is closed, the air flowing through the intake port hits an orthogonal state, and thus, the intake turbulence here becomes a suction speed of the intake air, which in turn reduces the intake flow rate. It is becoming.

This phenomenon is inevitable because the swirl control valve 4 is biased toward the combustion chamber at the part divided into the straight port 3 and the helical port 2.

The present invention is devised to solve the problems of the prior art as described above, the object of the present invention is to maintain the attitude that the swirl control valve can guide the mixer with respect to the helical port while the swirl control valve is closed To provide a vehicle intake swirl control device that can minimize the resistance of the.

In order to realize this, the present invention provides an engine having an intake machine having a structure in which a straight port and a helical port communicate with a combustion chamber, wherein an adapter is provided between an intake manifold and a cylinder head and operated by an electronic control unit in the adapter. A valve plate for connecting the first link and the second link with a pin and connecting the first link and the second link with a pin and installing a valve shaft in the second link to open a straight port on the valve shaft. It provides a vehicle intake swirl adjusting device characterized in that the installation.

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

1 is a plan view of an engine in which an intake swirl control device according to the present invention is installed, and a surge tank 10 which communicates with an air cleaner to diffuse air used for combustion, and is branched from the surge tank 10. A plurality of intake manifolds (11) and an adapter (13) in which the intake manifold (11) communicates with the combustion chamber and is provided on the cylinder head (12) are provided with a control means for swirling the intake air.

2 is a view showing the swirl adjusting means 14 in the adapter 13, and the passage leading to the combustion chamber 15 through the intake manifold 11 is branched to the straight port 16 and the helical port 17. have.

The straight port 16 is provided with swirl adjusting means 18 which opens at high speed and closes at low speed to regulate the supply of intake air.

The swirl adjusting means 18 has a structure controlled by the electronic control unit, and is operated by a signal output from the electronic control unit at high speed.

As shown in FIG. 3, a first link 19 is connected to the drive shaft of the actuator 14 so as to interlock in an axial direction, and the first link 19 is coupled with a pin 20. The second link 21 can be rotated.

The valve shaft 22 is fixed to the second link 21 so that the valve shaft 22 can be interlocked. A valve plate 23 is installed on the valve shaft 22 to open and close the straight port 16. have.

4 is an exploded perspective view of the valve shaft valve plate according to the present invention, the valve shaft 22 is formed with a flat portion 24 for positioning the valve tube 23, the hole for pressing the fastening pin This is kneeling down.

The valve shaft 22 is installed on the side of the straight port 16 as shown in FIG. 2, and when the valve shaft 22 is closed, the valve shaft 22 is almost in line with the inner surface 25 of the helical port 17. It is made to be in close contact with the inner surface 26 of the straight port 17.

In the intake swirl adjusting device according to the present invention, the valve tube 23 of the swirl adjusting means 18 closes the straight port 16 when the vehicle travels at a low speed or when idling.

2 shows the position of the valve plate of the swirl control device at low speed, in which the mixer sucked into the combustion chamber 15 enters only through the helical port 17.

When the vehicle is driven at a high speed, an output signal is output from the electronic control unit to operate the actuator 14. At this time, the first link 19 installed to be interlocked with the actuator 14 moves in the longitudinal direction, so the pin ( The second link 21 connected to 20 rotates about the valve shaft 22.

Accordingly, the valve plate 23 fixed to the valve shaft 22 rotates in the direction of the arrow in FIG. 2 to gap the straight port 16.

In this state, the mixer flows into the combustion chamber 15 through the straight port 16 and the helical port 17. The valve plate 23 is in close contact with the inner side of the straight port, and the air enters through the intake manifold 11. Of resistance hardly occurs.

In the state where the valve plate 23 is open, the valve plate 23 is in close contact with the inner surface 26 of the straight port 16 and the valve shaft 22 is also located at the side of the passage. The resistance can be minimized.

As such, the swirl adjusting means according to the present invention has an advantage of increasing the output of the engine because the flow resistance of the air can be minimized.

Claims (3)

In an engine having an intake machine having a structure in which a straight port and a helical port are connected to a combustion chamber, an adapter 13 is provided between the intake manifold 11 and the cylinder head 12, and the electronic control in the adapter 13 is performed. The first link 19 is interlocked with the actuator 14 actuated by the unit, and the first link 19 and the second link 21 are connected with the pins 20, and the second link described above. A valve shaft 22 is provided in the link 21, and a valve plate 23 for opening and closing the straight port 16 is provided on the valve shaft 22. 2. The intake swirl adjusting device for automobile according to claim 1, wherein the valve plate (23) is positioned to guide the air in a gentle inclination with the inner surface (25) upon closing. 2. The intake swirl adjusting device for automobile according to claim 1, wherein the valve plate (23) is positioned to guide air by being in close contact with the straight port inner surface (26) when opened.