KR200150539Y1 - Injection hole of an injector - Google Patents

Abstract

The present invention relates to the injection hole of the injector, and to process the injection hole in the upward direction with respect to the horizontal line to increase the relative speed between the fuel and the air injected from the injector on one surface of the injector port in the curved inner wall portion Since the fuel buried in the inner wall portion is introduced into the combustion chamber at an increased speed as the air collides, it is possible to improve the efficiency of the fuel and at the same time improve the injection vaporization rate.

Description

Injection hole of injector

1A is a cross-sectional view showing a state where a conventional injector is installed in a cylinder head.

Figure 1b is a front view showing the injection hole in the injector of Figure 1a.

Figure 2a is a cross-sectional view of the injector is installed in accordance with the present invention.

FIG. 2B is a front view of the injector injection hole shown in FIG. 2A.

* Explanation of symbols for main parts of the drawings

10: cylinder head 10a: combustion chamber

10b: inlet hole 11: valve stem

12: valve head 13: valve

14: water jacket 20,30: injector

21: connector 22,31: injector port

22a, 31a: injection hole

The present invention relates to an injection hole of an injector, and more particularly, by changing the injection direction of the injection hole formed in the injector porter, the relative speed between the fuel injected from the injection hole and the air supplied through the intake manifold is determined. It relates to the injection hole of the injector to increase the vaporization rate of the fuel.

In general, a conventional injector for mixing fuel and air introduced into an intake manifold and supplying the fuel into a combustion chamber of a cylinder is shown in FIG. 1 (a) (b). In contact with the valve stem 11 and the inlet hole 10b, which are movable up and down by a rocker arm which rotates about an axis as the cam (not shown) operates to supply the mixture of the gas into the combustion chamber 10a. A valve 13 composed of a valve head 12 is internally formed, and a water jacket 14 through which coolant flows is formed on an outer circumferential surface of the cylinder head 10 to cool heat generated during piston stroke.

In addition, an intake manifold 15 is installed at one side of the cylinder head 10 to introduce air through a carburetor (not shown), and an injector 20 for injecting fuel into an upper surface of the intake manifold 15. ) Is installed.

In addition, a connector 21 is mounted on the injector 20 to prevent rotation of the injector 20 when fuel is supplied, and two injection holes 22a on one surface of the injector 20 to inject fuel. The injector ports 22 which are formed symmetrically with each other are attached, and are machined to have a predetermined inclination angle of the injection hole 22a.

In the injection hole of the conventional injector configured as described above, when the cam receiving power rotates and the rocker arm is rotated to push the valve 13 installed in the cylinder head 10 downward, the inflow of the cylinder head 10 is performed. As the valve head 12 of the valve 13 in contact with the hole 10b is opened, air flows into the combustion chamber 10b through the intake manifold 15.

At the same time, in the injector 20 installed on the upper surface of the intake manifold 15, fuel is injected through the injection hole 22a processed in the injector port 22, mixed with air, and supplied into the combustion chamber 10b. When the inflow is completed in 10b), the valve 13 is closed and the piston repeatedly drives the vehicle by compressing and exploding stroke.

However, in the injection hole of the conventional injector configured as described above, the injection hole processed in one surface of the injector port is processed horizontally with respect to the horizontal line H as shown in FIG. Since the fuel is concentrated in the hole, the fuel is buried in the inner wall of the cylinder head by the air flowing from the intake manifold, which reduces the efficiency of the fuel and reduces the relative speed between the fuel injected from the injection hole and the air introduced. There was a problem that is reduced.

The present invention is to solve the problems as described above, the object of the present invention is to process the injection hole processing direction of the injector port in the upward direction with respect to the horizontal line to inject fuel to the inner wall portion of the cylinder head, The fuel buried in the inner wall is introduced into the combustion chamber by the velocity of the air which is increased due to the impact on the inner wall of the curved tube. Therefore, the injection hole of the injector which improves the fuel efficiency and the injection vaporization rate is improved. To provide.

Features of the present invention for achieving the above object, the intake manifold for supplying air into the combustion chamber is mounted on one side of the cylinder head, an injector for injecting fuel is installed on the intake manifold and attached to the injector tip In the injection hole processed to have a predetermined inclination angle on one surface of the injector boat so as to inject fuel into the inlet hole of the cylinder head, the air supplied to the intake manifold on one surface of the injector port collides with the inner wall of the cylinder head. It is characterized in that the injection hole is processed upward relative to the horizontal line so as to increase the relative speed between the fuel injected from the injector and the air.

Hereinafter, with reference to the accompanying drawings an embodiment of the injection hole of the injector according to the present invention as follows.

Figure 2a, b is a view showing the injection hole of the injector according to the present invention, the overall configuration of the cylinder head is the same as in Figure 1, and the same reference numerals are used.

In the cylinder head 10 having the water jacket 14 formed on the outer circumferential surface of the coolant, a valve 13 composed of a valve stem 11 and a valve head 12 is installed, and the valve head 12 transmits power. In contact with the inflow hole (10b) by the valve 13 flows in the vertical direction in contact with the rocker arm that rotates in accordance with the operation of the cam received, air is introduced into the combustion chamber (10b) on one side of the cylinder head (10). Intake manifold 15 is mounted.

In addition, an injector 30 for injecting fuel is installed on an upper surface of the intake manifold 15, and an injector 30 is installed, and a predetermined inclination angle is provided at one end of the injector 30 to inject fuel. The injector port 32 having the injection holes 32a formed symmetrically with each other is attached, and the machining direction of the injection holes 32a is somewhat above the horizontal line H so as to be injected toward the inner wall of the cylinder head 10. It is processed in the direction.

Referring to the effect of the injection hole of the injector according to the present invention configured as described above are as follows.

The valve head 12 of the valve 13 in contact with the inlet hole 10b of the cylinder head 10 is opened when the valve 13 installed in the cylinder head 10 is brought into contact with the rocker arm that is rotated by the operation of the cam. As air flows through the intake manifold 15 and the air flow changes by the curved inner wall of the cylinder head 10, the air flows into the combustion chamber 10a and is installed on the intake manifold 15. Fuel is injected from the injector 30.

At this time, since the fuel is injected to the inner wall of the cylinder head 10 from the injection hole 32a which is processed upward on the horizontal line H on one surface of the injector port 32 attached to the injector 30, the intake manifold Since the relative speed between the air supplied from (15) and the fuel is increased, the fuel buried in the wall portion can be completely introduced into the combustion chamber to increase the vaporization rate.

According to the injection hole of the injector according to the present invention as described above, by processing the injection hole of the injector port in the upward direction with respect to the horizontal line in the inner wall portion by the speed at which the air increases due to the impact on the inner wall portion of the curved tube during fuel injection The fuel buried in the inside of the combustion chamber improves the fuel efficiency and improves the injection vaporization rate.

Claims (1)

An intake manifold for supplying air into the combustion chamber is mounted at one side of the cylinder head, and an injector for injecting fuel is installed at the upper portion of the intake manifold, and attached to the injector tip to inject fuel into the inlet hole of the cylinder head. In the injection hole processed to have a predetermined inclination angle on one surface of the injector port, the air supplied to the intake manifold on one surface of the injector port collides with the inner wall of the cylinder head to increase the relative speed between the fuel injected from the injector and the air. The injection hole of the injector, characterized in that the injection hole is processed upward relative to the horizontal line.