KR101072308B1 - Rotate injector nozzle apparatus for diesel engine - Google Patents

Abstract

The rotary injector nozzle apparatus of the diesel engine disclosed in the present invention includes an injector; A piezoelectric ceramic mounted to bend within a predetermined angle according to the voltage applied to the body tip of the injector; An end portion of the piezoceramic is composed of a nozzle body installed at the front edge of the injector sea in a horizontal rotational lifting operation.

The rotary injector nozzle device of such a diesel engine first uses the movement of the bending displacement of the piezoelectric ceramics with arc-shaped trajectories, and enables the rotation, up and down movements using a screw thread, so that the engine in the diesel engine It provides a rotary injector nozzle that can change the injection angle and nozzle depth according to the number of revolutions and the load of the.

Injector, Diesel Engine, Spinneret, Nozzle Body

Description

ROTATE INJECTOR NOZZLE APPARATUS FOR DIESEL ENGINE}

1 shows an injector nozzle of a diesel engine according to the prior art;

FIG. 2 is a view from below of the injector nozzle in FIG. 1; FIG.

Figure 3 is a view showing a rotary injector nozzle apparatus of a diesel engine according to an embodiment of the present invention.

Figure 4 is a view of the rotary injector nozzle apparatus of the diesel engine in Figure 3;

<Explanation of symbols for the main parts of the drawings>

10: injector nozzle unit

12: injector

14: body

16: Piezoceramic

18: Nozzle body

20: Guide protrusion

22: Guide groove

22-1: Horizontal Groove

22-2: Inclined groove

The present invention relates to a rotary injector nozzle device of a diesel engine, and more specifically, first, the bending displacement motion of a piezoelectric ceramic uses an arc-shaped trajectory to move, and further uses a screw thread to rotate and move up and down. The present invention relates to a rotary injector nozzle apparatus of a diesel engine, which provides a rotary injector nozzle capable of changing an injection angle and nozzle depth according to the engine speed and load in a diesel engine.

1 is a view showing an injector nozzle of a diesel engine according to the prior art, Figure 2 is a view of the injector nozzle in FIG.

Referring to the drawings, the injection angle in the injector 2 nozzle 4 of the diesel engine refers to the angle formed by the fuel injection hole (3). In addition, the nozzle 4 depth means the depth in which the injector 2 nozzle enters a combustion chamber.

In the combustion mechanism of a conventional diesel engine, the formation of the flow field inside the combustion chamber changes rapidly with the engine speed and the load, which in turn causes the diesel to be optimized for the rapidly changing state of the flow field as it has a large impact on combustion and harmful exhaust gases. The choice of injection angle and nozzle depth at the engine injector 2 and nozzle 4 is one of the most important factors in engine combustion chamber design.

The injector 2 nozzle 4 of the diesel engine as described above has one injection angle and nozzle depth at the same time as the injector is installed in the head (not shown), and thus the injection angle and nozzle depth according to the rotational speed and load of the engine. Need to be different.

Therefore, the angle of the injector nozzle and the nozzle of the injector nozzle may be changed by varying the angle of the injector clamp (not shown) that fixes the injector 2 to the head of the engine, or by varying the number of rings such as washers in the part that fixes the injector 2. By changing the depth, it is not possible to vary the injection angle and nozzle depth according to the number of revolutions and load of the engine by making several rings such as injector clamps and washers, resulting in deterioration of engine performance and increase of harmful emissions in certain operating areas. There was a problem.

In order to solve the problems of the prior art as described above, an object of the present invention is to first use the movement of the bending displacement of the piezoelectric ceramics with arc-shaped trajectory, and also to rotate and It provides a rotary injector nozzle device of the diesel engine to enable the lower motion to provide a rotary injector nozzle that can change the injection angle and nozzle depth in accordance with the engine speed and load in the diesel engine.

Other objects and advantages of the invention will be described below and will be appreciated by the embodiments of the invention. Furthermore, the objects and advantages of the present invention can be realized by means and combinations indicated in the claims.

In order to achieve the above technical problem,

An injector;

A piezoelectric ceramic mounted to bend within a predetermined angle according to the voltage applied to the body tip of the injector;

An end portion of the piezoceramic is provided with a rotary injector nozzle device of a diesel engine, characterized in that the front end is composed of a nozzle body installed in the injector body in the horizontal rotation lifting operation.

The nozzle body is formed with a guide protrusion to guide the horizontal rotation and lifting during piezoceramic operation.

The injector body is formed with a guide groove divided into a horizontal groove and an inclined groove in combination with the guide protrusion to enable horizontal rotation and elevation.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

3 is a view showing the concept of a rotary injector nozzle apparatus of a diesel engine according to an embodiment of the present invention, Figure 4 is a view of the rotary injector nozzle apparatus of a diesel engine in Figure 3, Figure 5 is shown in Figure 3 One drawing.

Referring to the drawings, the injector nozzle apparatus 10 includes an injector 12; A piezoelectric ceramic 16 mounted to bend within a predetermined angle according to a voltage applied to the tip of the body 14 of the injector 12; An end portion of the piezoceramic 16 is constituted by a nozzle body 18 installed at the front edge of the injector body 14 so as to move in a horizontal rotation.

The nozzle body 18 is formed with a guide protrusion 20 to guide horizontal rotation and lifting during operation of the piezoelectric ceramic 16.

The injector body 14 is coupled to the guide protrusion 20 to form a guide groove 22 divided into a horizontal groove 22-1 and an inclined groove 22-2 to allow horizontal rotation and elevation.

 Referring to the operation of the present invention made as described above, the bending displacement motion of the piezoelectric ceramics to move with an arc-shaped trajectory to change the injection angle and nozzle depth in accordance with the engine speed and load in the diesel engine It is used.

That is, when the piezoelectric ceramic 16 is fixed to the end of the nozzle body 18 of the injector 12 to perform a bending displacement motion, the injector has the same trajectory as the circumference of the nozzle body 18 of the cylindrical injector 12. The nozzle body 18 of (12) also repeats the rotational motion like a and b along the trajectory.

The guide groove 22 is formed on the inner circumferential surface of the body 14 of the injector 12 to form a horizontal groove 22-1 and an inclined groove 22-2. Guide protrusions 20 are formed on the outer circumferential surface of the nozzle body 18.

In addition, the guide protrusion 20 is set to be positioned in the middle of the horizontal groove 22-1 and the inclined groove 22-2 when the piezoceramic 16 is located at the position of the split hole and the split hole.

That is, when the piezoceramic 16 is not rotated or raised, the guide protrusion 20 and the guide groove 22 are formed in the middle of the base position.

When the voltage is applied to the piezoelectric ceramic 16 according to preset information of the electronic control device 26 and rotates in the a direction, the guide protrusion 20 rotates the horizontal groove 22-1 and rotates in the b direction. The guide protrusion 20 is rotated to the inclined groove 22-2.

To this end, the nozzle body 18 is assembled into a structure having a slight gap in the body 14 of the injector 12, and the sealing body is kept airtight to prevent leakage.

Since the injection angle of the six holes 28 is 60 degrees, only the maximum rotation of 30 degrees is required, and the nozzle depth is finely adjusted to enable the rotation and the lift of the injector nozzle.

The present invention as described above, the bending displacement motion of the piezoceramic using the movement of the arc-shaped trajectory to rotate without angle, and to slide the inclined groove to allow the vertical movement in the diesel engine The injection angle and the nozzle depth can be variably changed according to the engine speed and the load.

As mentioned above, although this invention was demonstrated by the limited embodiment and drawing, this invention is not limited by this and is given by the person of ordinary skill in the art to the following, Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

Claims (3)

An injector; A piezoelectric ceramic mounted to bend within a predetermined angle according to the voltage applied to the body tip of the injector; Rotating injector nozzle apparatus of the diesel engine, characterized in that the end of the piezoceramic is composed of a nozzle body installed in the injector body in the horizontal rotation lifting operation on the front edge. The method according to claim 1, The nozzle body is a rotary injector nozzle apparatus of the diesel engine, characterized in that the guide projection is formed to guide the horizontal rotation and lifting during piezoceramic operation. The method according to claim 1, The injector body of the diesel engine rotary injector nozzle device, characterized in that the guide groove is divided into a horizontal groove and an inclined groove to be combined with the guide projection to enable horizontal rotation and lifting.

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