KR200159369Y1 - Accelerative apparatus of fuel atomization when engine start - Google Patents

Abstract

The present invention is intended to promote atomization of fuel injected into the combustion chamber of a gasoline engine. Particularly, the fuel injected from the injector is atomized again at the initial stage of engine start-up with the air supplied from the intake manifold. The fuel injection performance of fuel is improved by inducing vaporization by contact, and ultimately, it is a device for promoting atomization of fuel at the beginning of engine that can reduce hydrocarbon emissions in exhaust gas. A checkered mesh plate having a fine porosity is mounted on the mesh plate, and the mesh plate is mounted between an intake manifold for supplying air to the engine and an intake valve so that fuel injected from the injector passes through the mesh plate. And the inlet port inlet It is another feature that the mesh plate blocking is configured to be rotatable as a hinge so as to be in close contact with the inner upper portion of the intake port.

Description

Fuel atomization promoting device at the beginning of engine start

1 is a cross-sectional view showing an installation state of the present invention.

2 is a partial configuration diagram of a mesh plate which is a fuel atomization promoting device of the present invention.

3 is a cross-sectional configuration showing a prior art.

* Explanation of symbols for main parts of the drawings

1, 10: intake port 2, 13: inlet valve

3, 11: intake manifold 4, 12: injector

5: mesh plate 6: hinge

[Industrial use]

The present invention is intended to promote atomization of fuel injected into the combustion chamber of a gasoline engine, and intake manifold at the same time as atomizing the fuel injected from the injector at the initial stage of engine start with the engine cooled. To improve the fuel efficiency of fuel by inducing vaporization by contact with air supplied from air) and ultimately facilitating atomization of fuel at the start of engine that can reduce hydrocarbon emissions in exhaust gas Relates to a device.

[Prior art]

In general, in the case of gasoline engines, as shown in FIG. 3, an injector 12 for injecting fuel is mounted to an intake manifold 11 connected to an intake port 10 of a cylinder head constituting an engine. In addition, the intake port 10 is configured to be equipped with an intake valve 13 for opening and closing the combustion chamber so that fuel can be injected into the combustion chamber.

[Problems with Prior Art]

However, the conventional engine having the above structure has a wetting attached to the inner wall of the intake port 10 as well as the inlet valve 13 in which the fuel injected from the injector 12 is opened when the engine is started under a cooling state. (Wetting) not only occurs, but due to the phenomenon that fuel atomization is sluggish, there is a problem of increasing the emission of hydrocarbons in the exhaust gas along with the combustibility.

The above bad problem is that when the engine is cooled, not only the intake port 10 but also the intake valve 13 are cooled, and the fuel injected from the injector 12 is injected into the intake port. Due to the phenomenon that the particles of the fuel injected by the coalescing are combined with each other, and the particles of the fuel colliding with the wall of the intake port and the intake valve are attached, all the injection amount injected from the injector cannot be introduced into the combustion chamber. As it is attached to the wall of the intake port and the intake valve, fuel efficiency is not only reduced, but also the fuel that is attached to the wall of the intake port and the intake valve is discharged together with the exhaust gas without being burned, thereby increasing the emission of hydrocarbons. This causes the increase of hydrocarbon emissions in the exhaust gas at the beginning of engine start-up. The dots were.

[Problem to Solve]

The present invention has been made to solve the above problems, and at the initial start of the engine, the function of pulverizing the fuel injected from the injector again and the fuel can be suppressed from being attached to the inner wall surface of the intake port and the intake valve. By inducing vaporization, all fuel injected from the injector can be introduced into the combustion chamber, thereby improving fuel efficiency and reducing hydrocarbon emissions from exhaust gas by reducing the generation rate of hydrocarbons due to incomplete combustion of fuel. The purpose is to make it possible.

[Means for solving the problem]

In order to achieve the above object, the present invention is equipped with a checkered mesh plate having a fine porosity inside the intake port of the engine, the intake manifold and the inlet valve for supplying air to the mesh plate engine It is characterized in that the fuel is injected from the injector mounted between the configuration to pass through the mesh plate.

In addition, the mesh plate blocking the inlet of the intake port is configured to be rotatable as a hinge so as to be in close contact with the inner upper portion of the intake port.

EXAMPLE

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing the installation state in order to explain the present invention, and FIG. 2 is a partial configuration diagram of a mesh plate which is the main part of the present invention. An intake valve 2 is installed in the intake port 1, and an intake manifold 3 is connected to the intake port 1 to supply air to the engine.

An injector 4 is attached to the upper end of the intake manifold 3 so as to inject fuel toward the intake port 1.

The intake port 1 is equipped with a checkered mesh plate (5) having a fine porosity, the mesh plate (5) is mounted at a position between the intake valve (2) and the intake manifold (3) In addition, the upper end of the mesh plate (5) as a structure to be mounted as a hinge (6) is operated to close the inlet of the intake port (1) or rotated to the upper side of the inner upper portion of the intake port (1) It was to be able to keep in close contact with the.

In addition, the mesh plate 5 is configured to be controlled by an electronic control system (EC) for controlling each engine of the vehicle.

When the mesh plate 5 of the present invention configured as described above is started when the engine is cooled, the mesh plate 5 rotates from the hinge 6 to the inlet of the intake port 1 by the control operation of the electronic control system. In this state, the fuel injected from the injector 4 passes through the mesh plate 5 while being injected toward the mesh plate 5, wherein the fine pores formed in the mesh plate 5 are maintained. In the process of passing through the fuel is atomized again, some of the fuel that collides with the checkerboard pattern of the mesh plate (5) is introduced into the combustion chamber while evaporating by contact with the air flowing from the intake manifold (3). The fuel injected from the injector 4 can be introduced into the combustion chamber of the entire amount.

In addition, the particles of the fuel injected from the injector 4 pass through the mesh plate 5 before joining each other, thereby facilitating atomization of the fuel, and the mesh plate 5 itself is used to attach a portion of the injected fuel. Then, the fuel is attached to the inner wall surface of the intake port 1 so as to be evaporated by the air supplied from the intake manifold 3.

As described above, the mesh plate 5 which induces contact with the air introduced while atomizing the fuel injected from the injector 4 at the beginning of the engine is vaporized for about 20 seconds after the engine is started. However, when the inlet of the intake port 1 is in a cross state and the engine is heated to some extent, it rotates to the inner portion of the intake port 1 starting from the hinge 6 by the control operation of the electronic control system. In order to maintain the close contact state, the atomization of fuel injected from the injector 4 can be maintained under the condition that the engine is heated to some extent.

[effect]

According to the present invention, when the engine is started while the engine is cooled, the mesh plate mounted on the intake port crosses the inlet port inlet to atomize the fuel injected from the injector, and the fuel attached to the mesh plate is intake manifold. Since it is configured to be introduced into the combustion chamber while evaporating in contact with the air flowing in from, the particles of the fuel at the beginning of the start is combined to prevent the phenomenon of being attached to the inner wall surface of the intake port and the intake valve, this effect It is an effect that can inject the entire fuel injected from the injector into the combustion furnace, not only to improve fuel efficiency but also to reduce the generation rate of hydrocarbons due to unburned state of fuel. It is designed to provide an excellent engine.

Claims (1)

A checkered mesh plate having a fine porosity is mounted inside the intake port of the engine, and the mesh plate is rotatably mounted as a hinge between the intake manifold for supplying air to the engine and the integrating valve to be injected from the injector. A device for promoting atomization of fuel during initial start of an engine, characterized in that the fuel is configured to pass through the mesh plate.