KR20050096355A - Fuel supply pipe laying structure for an engine - Google Patents

Abstract

The present invention allows the fuel supply piping structure to flow the fuel through a single fuel supply pipe to the surroundings of the engine, and to supply fuel to the plurality of delivery pipes through the plurality of branch pipes around the engine, so that the fuel supply piping structure has a rigid structure by itself. Of course, it provides a structure that is firmly fixed to the engine to prevent the leakage of fuel, and does not generate vibration and noise.

Description

Fuel supply pipe laying structure for an engine

The present invention relates to a structure of a fuel supply pipe for supplying fuel for an engine, and more particularly, a return less type for supplying fuel to two delivery pipes in two rows of combustion chambers. ) Relates to the structure of fuel supply piping.

The returnless fuel pipe does not have a pipeline from the engine to the fuel tank, and in order to supply fuel to the combustion chambers arranged in two rows in the engine, two delivery pipes are generally arranged in parallel to each other to supply fuel to one combustion chamber heat. It has a structure that enables supply.

In order to supply fuel from the fuel tank to the two delivery pipes, fuel must be supplied from the fuel tank to the periphery of the engine through one fuel supply pipe and delivered to the two delivery pipes through the two branch pipes.

As described above, the present invention provides a structure in which a fuel supply pipe structure that allows fuel to flow through one fuel supply pipe to an engine periphery and to supply fuel to a plurality of delivery pipes through a plurality of branch pipes around the engine. It is an object of the present invention to provide a technique for preventing leakage of fuel and generating vibration and noise.

The fuel supply pipe structure of the engine of the present invention for achieving the above object is a connector to which the engine end of the fuel supply pipe is coupled;

A plurality of branch pipes extending from the plurality of delivery pipes and connected to the connector;

The plurality of branch pipes may be welded through the outer wall of the connection chamber of the connector to protrude into the connection chamber.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 to 3, two delivery pipes 3 are arranged on both sides of the intake manifold 1 for supplying intake air to six combustion chambers arranged in two rows. Branch pipes 5 are respectively connected to the two delivery pipes 3, and the branch pipes 5 are connected to the connector 7, and the connector 7 has an engine side of a fuel supply pipe (not shown). The ends are adapted to engage.

Referring to FIG. 3, the flange 9 integrally formed with the fuel supply pipe is bolted to the flange 11 of the connector 7. In fact, the fuel supply pipe and the flange are actually shown. (9) is integrally formed so that the fuel supply pipe can be easily coupled to the connector 7 by bolting as shown.

Referring to FIG. 4, it can be seen that the internal structure of the branch pipes 5 is connected to the connector 7. The two branch pipes 5 form an outer wall of the connection chamber 13 of the connector 7. It penetrates and is welded in the state protruding into the connection chamber 13.

Therefore, the coupling state of the connector 7 and the branch pipe 5 ensures a structure capable of maintaining a fundamentally rigid coupling state.

Furthermore, in the present embodiment, in a state where the connector 7 and the branch pipe 5 are connected, the outer wall of the connection chamber 13 and the branch pipe 5 of the connector 7 are wrapped together. An additional plate 15 welded integrally to the connector 7 and the branch pipe 5 was configured.

Therefore, the connector 7 and the branch pipe 5 are coupled to each other to secure a very rigid structure, thereby preventing the connection part from being relaxed by various vibrations and the like over time, thereby ultimately preventing oil leakage. It can be prevented in advance.

On the other hand, although omitted in Figures 2 to 4, Figure 1 shows a support bracket 17, which is a structure that can improve the vibration and noise characteristics of the fuel supply pipe structure of the present invention, in this embodiment the connector ( It further comprises a support bracket 17 for connecting the outer wall of the connector (7) close to the center of gravity and the fixed part of the engine to support the connector (7) to the fixed part of the engine.

The portion of the connector 7 to which the support bracket 17 is connected is the outer wall of the connection chamber 13 to which the plurality of branch pipes 5 are connected, and the fixed part of the engine is the intake manifold 1. The support bracket 17 is welded between the connector 7 and the intake manifold 1.

Accordingly, by firmly fixing the vicinity of the connector 7, which is the portion where the mass of the fuel supply pipe structure is concentrated, to the engine as described above, the fuel supply pipe is prevented from generating vibration and noise while making a relative movement with respect to the engine. Of course, the repetitive load due to vibration or the like does not act on the connection portion of the branch pipe 5 and the connector 7, thereby maintaining the connection state of the branch pipe 5 and the connector 7 more firmly. Will be

As described above, according to the present invention, a fuel supply pipe structure for allowing fuel to flow through one fuel supply pipe to the periphery of the engine and to supply fuel to the plurality of delivery pipes through a plurality of branch pipes around the engine is itself. In addition to having a rigid structure, it is possible to provide a structure that is firmly fixed to the engine to prevent the leakage of fuel, and to prevent the generation of vibration and noise.

1 is a perspective view showing a fuel supply pipe structure of an engine according to the present invention;

Figure 2 is a view showing a state in which the support bracket is removed as shown in Figure 1 from a different angle,

3 is an enlarged view of the connector installation part of FIG. 2;

4 is a cross-sectional view illustrating a connection state between a connector and branch pipes.

<Brief description of symbols for the main parts of the drawings>

One; Intake manifold 3; Delivery Pipe

5; Branch pipe 7; connector

13; Connecting chamber 15; Plate Attachment

17; Support Bracket

Claims (4)

A connector to which the engine end of the fuel supply pipe is coupled; A plurality of branch pipes extending from the plurality of delivery pipes and connected to the connector; The plurality of branch pipes are welded while protruding into the connection chamber through the outer wall of the connection chamber of the connector Fuel supply piping structure of the engine, characterized in that. The method of claim 1, Further comprising an attachment plate welded integrally to the connector and the branch pipe in a state in which the connector chamber and the branch pipe are connected, while surrounding the outer wall of the connection chamber and the branch pipe of the connector together. Fuel supply piping structure of the engine, characterized in that. The method of claim 1, It further comprises a support bracket for connecting the outer wall of the connector close to the center of gravity of the connector and the fixed portion of the engine to support the connector to the fixed portion of the engine Fuel supply piping structure of the engine, characterized in that. The method of claim 3, The portion of the connector to which the support bracket is connected is the outer wall of the connection chamber to which the plurality of branch pipes are connected. Fuel supply piping structure of the engine, characterized in that.