KR19990020033A - Intake port of cylinder head - Google Patents

Abstract

The present invention forms a communication hole on one side of a partition plate installed in the center of an intake manifold divided into two intake manifolds to more effectively atomize fuel injected from a fuel injector, which is an intake manifold. And an intake port are flange-coupled, and a divider is installed in the intake port of the intake manifold and the intake port so as to be partitioned into a first intake port and a second intake port, and a fuel injector is installed at an end of the intake manifold. In the intake port of the cylinder head provided with a throttle valve for adjusting the air intake amount, a communication hole penetrating the first inlet port and the second inlet port is drilled in the partition plate at the rear end of the fuel injector so that the air of the second inlet port is It relates to an intake port of the cylinder head to be introduced into the suction port.

Description

Intake port of cylinder head

The present invention relates to an intake port of a cylinder head, and more particularly, to form a communication hole in one side of a partition plate installed in the center of an intake manifold divided into two intake manifolds to view fuel injected from a fuel injector. It relates to an intake port of a cylinder head that allows for efficient atomization.

An example of an intake manifold for supplying air and fuel to a conventional combustion chamber will be described with reference to FIG. 1, an intake manifold 101 connected to an air purifier, and an intake port 102 connected to a combustion chamber 103 in a cylinder head; an intake port is flanged, and a divider plate 109 divides the inlet port into a first inlet port 105 and a second inlet port 106 at the center of the intake manifold 101 and the intake port 102. A wall is installed along the longitudinal direction of the intake manifold 101 and the intake port 102, while a fuel injector 108 for injecting fuel is provided at the end of the intake manifold 101. In the first intake port 105, a throttle valve 107 is installed to operate in response to the operation of the accelerator pedal to adjust the amount of air sucked in.

In addition, an exhaust port 104 and an exhaust manifold are directly connected to the combustion chamber 103 in the cylinder head so that the exhaust gas generated during fuel combustion is discharged.

The air flowing into the combustion chamber 103 through the second inlet 106 and the air whose inflow rate is controlled by the throttle valve 107 which are opened and closed in response to the operation of the accelerator pedal are introduced into the combustion chamber 103 and at the same time the fuel injector 108 The injected fuel is introduced. In particular, the fuel injected from the fuel injector 108 is atomized by the air introduced through the first inlet 105 and the second inlet 106 to be introduced into the combustion chamber 103.

In this way, the exhaust gas generated while the mixer introduced into the combustion chamber 103 is combusted by the ignition of the spark plug is discharged to the outside through the exhaust port 104 and the exhaust manifold.

However, when air flows normally through the second intake port, when the amount of air flowing into the first intake port becomes minute by the operation of the throttle valve installed in the first intake port, the fuel injected toward the second intake port of the fuel injected from the fuel injector Due to the flow of air, it is converted into fine particulates and flows into the combustion chamber, but the fuel injected into the first inlet having a small flow of air is converted into a liquid phase and flows into the combustion chamber. Is generated and outputted to the exhaust port.

Accordingly, the present invention has been proposed to solve the above-described drawbacks, by forming a communication hole formed at an intake manifold in one side of a partition plate for dividing the first inlet and the second inlet. In addition, when the throttle valve is closed by the operation of the accelerator pedal, when the air flow in the first inlet is low, a part of the air flowing into the second inlet is introduced into the first inlet through the communication hole, so that the fuel injected from the fuel injector can be atomized. It is an object of the present invention to provide an intake port of a cylinder head.

1 is a cross-sectional view showing an intake port of a conventional cylinder head.

2 is a cross-sectional view showing an intake port of a cylinder head according to the present invention.

3 is a cross-sectional view showing the main part of FIG.

Explanation of symbols for main parts of the drawings

1: Intake manifold 2: Intake port

3: combustion chamber 4: exhaust port

5: first inlet 6: 2nd inlet

7: Throttle Valve 8: Fuel Injector

9: partition plate 10: communication hole

According to the present invention for achieving the above object, an intake manifold and an intake port are flange-coupled, and a divider is installed in the intake port of the intake manifold and the intake port, and divided into a first intake port and a second intake port, and an intake manifold. A fuel injector is installed at the end of the fold, and a communication hole penetrating through the first inlet port and the second inlet port is provided at the intake port of the cylinder head having a throttle valve for adjusting the air intake amount in the first inlet port. It is characterized in that the perforated plate on the rear end of the fuel injector to allow the air of the second suction port to flow into the first suction port.

Hereinafter, the configuration according to an embodiment of the present invention in more detail with an exemplary drawing as follows.

2 is a cross-sectional view showing an intake port of a cylinder head according to the present invention, Figure 3 is a cross-sectional view showing the main part of FIG.

An intake manifold 1 connected to the air cleaner and an intake port 2 connected to the combustion chamber 3 in the cylinder head are flanged, and in the center of the intake manifold 1 and the intake port 2 A partition plate 9 for dividing the intake port into the first intake port 5 and the second intake port 6 is formed long along the longitudinal direction of the intake manifold 1 and the intake port 2.

A fuel injector 8 for injecting fuel is provided at the end of the intake manifold 1, and a throttle for adjusting the amount of air sucked in the first inlet 5 is operated in response to the operation of the accelerator pedal. The valve 7 is provided, and the exhaust port 4, the exhaust manifold, etc. are directly connected to the combustion chamber 3 in the cylinder head so that the exhaust gas generated at the time of fuel combustion is discharged.

In addition, one side of the splitter plate 9, that is, a rear end of the splitter plate on which the fuel injector 8 is installed, is drilled into the communication hole 10 through which the first inlet port 5 and the second inlet port 6 pass. It is.

The operation of the present invention configured as described above will be described.

First, the air flowing into the combustion chamber 3 through the second inlet 6 and the air controlled by the throttle valve 7 which is opened and closed corresponding to the operation of the accelerator pedal are introduced into the combustion chamber 3 while the fuel injector 8 Fuel injected from) is introduced. At this time, the fuel injected from the fuel injector 8 is atomized by the air introduced through the first inlet 5 and the second inlet 6 to enter the combustion chamber 3.

In particular, when the throttle valve 7 is closed by the operation of the accelerator pedal, the fuel injected from the fuel injector 8 is introduced into the first inlet 5 and the second inlet 6, respectively, as in the prior art. While the air flowing through the second intake port 6 flows into the combustion chamber 3 at a high speed, it flows through the communication hole 10 to the first intake port 5 at a high speed and is injected from the fuel injector 8. The fuel to be refined becomes fine particles and is supplied to the combustion chamber.

In this way, the exhaust gas generated while the mixer (in which air and fuel are mixed) introduced into the combustion chamber 3 is burned by the ignition of the spark plug is discharged to the outside through the exhaust port 4 and the exhaust manifold.

As described above, the present invention forms a communication hole on one side of the partition plate for dividing the first inlet and the second inlet from the inlet formed in the intake manifold, so that the throttle valve is closed by the operation of the accelerator pedal to allow air flow to the first inlet. When less, a portion of the air flowing into the second intake port flows into the first intake port through the communication hole, so that the fuel injected from the fuel injector can be atomized. In other words, by finely atomizing the fuel flowing into the combustion chamber, the unstable combustion rate of the fuel can be reduced to reduce the amount of hydrocarbons in the exhaust gas.

Claims (1)

An intake manifold and an intake port are flange-coupled, and a divider is installed in the intake port of the intake manifold and the intake port so as to be divided into a first intake port and a second intake port, and a fuel injector is installed at the end of the intake manifold. In the intake port, the intake port of the cylinder head provided with a throttle valve for adjusting the air intake amount, A communication hole penetrating the first inlet port and the second inlet port is drilled through the partition plate at the rear end of the fuel injector so that the air of the second inlet port flows into the first inlet port.