KR19990020648A - Exhaust Manifold Structure of Automobile - Google Patents

Abstract

The present invention relates to an exhaust manifold structure of an automobile, wherein intake ports of the exhaust manifold configured to capture exhaust gas discharged to the exhaust system after the combustion process of the engine are not adjacent to the ignition order according to the ignition order of each cylinder. The purpose is to be combined with the outlet of the lower portion to improve the output by preventing interference of the exhaust gas discharged after combustion.

The present invention for achieving the above object is a plurality of inlets 12 and communicating with each combustion chamber to collect the exhaust gas discharged after combustion mounted on the engine, and extending from the plurality of inlets 12 In the exhaust manifold having the outlet 13 integrated in the inlet 12, the first port 12a and the fourth port 12d, which are not adjacent to the ignition order of the engine, of the inlet 12 are connected to the first outlet 13a. The second port 12b and the third port 12c, which are shared and not adjacent to the ignition order of the engine, are formed to share the second outlet 13b.

Description

Exhaust Manifold Structure of Automobile

The present invention relates to an exhaust manifold of an automobile, and more particularly, to an exhaust manifold structure of an automobile which is capable of contributing to an improvement in output by preventing interference of exhaust gases discharged from the exhaust pipe through the exhaust manifold after combustion of the engine. .

In general, the engine of a car burns fuel mixed with air at an appropriate ratio to generate heat energy and converts it into mechanical energy. During the combustion process of such an engine, high-temperature and high-pressure exhaust gas is generated. In addition, the high temperature and high pressure exhaust gas is usually collected in an exhaust manifold to be introduced into the exhaust pipe, and the exhaust gas is introduced into the silencer while the harmful components are removed through the catalytic converter mounted on the exhaust pipe. In this silencer, the exhaust gas uses the Helmholtz resonance principle to reduce the amount of noise generated during exhaust.

That is, the exhaust system of the conventional vehicle is, as shown in Figure 1, the exhaust manifold (1) is mounted on the engine to collect the exhaust gas discharged after combustion, and the sub-muffler mounted on the rear of the exhaust manifold (1) (2), the bellows (3) attached to the rear of the submuffler (2), the muffler (4) attached to the rear of the bellows (3), etc., the submuffler (2) and bellows (3) and The mufflers 4 are each connected via an exhaust pipe.

By the way, the exhaust manifold 1, which is mounted in communication with the combustion chamber of the engine and collects the exhaust gas discharged after combustion of the fuel, has a plurality of intake ports 5 at its upper portion, which communicate with each combustion chamber. (5) is further provided with a discharge port (6) integrated in one at the bottom, so that the exhaust gas discharged from the combustion chamber of each cylinder after combustion is introduced through the inlet (5) provided in the upper portion of the exhaust manifold (1) The exhaust gas flowing into the suction port 5 flows into the submuffler 2 through the lower discharge port 6.

However, in the exhaust manifold 1, when the exhaust gas discharged after combustion of the engine flows in through the inlet port 5 and flows into the submuffler 2 through the outlet port 6, the exhaust port is discharged from the outlet port 6 side. Causing problems with lower organ output.

In other words, the above-described exhaust gas will be described with an example of a four-cylinder engine having four inlets 5 of the exhaust manifold 1 as an example. In a four-cylinder four-cylinder engine, the inlet 5 is formed as an independent conduit divided into first, second, third, and fourth ports 5a, 5b, 5c, and 5d. In the four ports 5a, 5b, 5c, and 5d, the exhaust gas discharged from the combustion chamber of each cylinder is introduced according to the ignition order of the engine. In the four-cylinder engine, the ignition is performed in the first port 5a, the first port. Since the three ports 5c, the fourth port 5d, and the second port 5b are connected in the order of cylinders, the first ports 5a, the second ports 5b, and the third ( Exhaust gas discharged through 5c) and the fourth port 5d meets each other at the discharge port 6 of the exhaust manifold 1 and causes an interference phenomenon.

Accordingly, the present invention has been made to solve the above disadvantages, the inlet of the exhaust manifold to collect the exhaust gas discharged to the exhaust system after the combustion process of the engine is not adjacent to the ignition order according to the ignition order of each cylinder. It is an object of the present invention to provide an exhaust manifold structure of a vehicle in which the intake holes which are not combined are combined with the outlet of the lower part to improve the output by preventing the interference of the exhaust gas discharged after combustion.

1 is a perspective view showing an exhaust system of a conventional vehicle,

2 is a perspective view illustrating an exhaust manifold of a vehicle according to the present invention.

Explanation of symbols for the main parts of the drawings

11-Exhaust Manifold 12-Intake

12a-1st port 12b-2nd port

12c-third port 12d-fourth port

13- outlet 13a- first outlet

13b-second outlet

The present invention for achieving the above object, has a plurality of inlet in communication with each combustion chamber so as to capture the exhaust gas discharged after combustion mounted on the engine, and an outlet that extends from the plurality of inlet and integrated in the lower part In the exhaust manifold, the first port and the fourth port of the inlet, which are not adjacent to the ignition order of the engine, share the first outlet and the second and third ports that are not adjacent to the ignition order of the engine are the first port. It is characterized in that it is formed to share two outlets.

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

2 is a perspective view illustrating an exhaust manifold of a vehicle according to the present invention.

As shown in the drawing, the exhaust manifold 11 mounted on the engine to collect exhaust gas discharged after combustion and guide the exhaust pipe to the exhaust pipe has a plurality of inlets 12 communicating with the respective combustion chambers thereon. And an outlet port 13 extending from the inlet port 12 while forming an integral part, so as to share only the inlet port 12 in which the ignition order of the engine is not adjacent to each other.

That is, the first port 12a and the fourth port 12d, which are not adjacent to the ignition order of the engine, among the plurality of intake ports 12 are configured to share the lower first outlet 13a, and another second The port 12b and the third port 12c share the lower second outlet 13b.

Here, the plurality of intake ports 12 formed in the exhaust manifold 11 have the ignition order of the first cylinder 12a, the third port 12c, the fourth port 12d, and the fourth cylinder in the four-cylinder engine. 2 port 12b and the cylinders connected to each other in order to rise.

Therefore, the inlet 12 and the outlet 13 of the exhaust manifold 11 can discharge the exhaust gas discharged after combustion of the engine without interference, that is, the first port 12a and the first port 12a. The exhaust gas discharged to the four ports 12d exits the exhaust pipe through the first discharge port 13a, and the exhaust gas discharged to the second port 12b and the third port 12c is the second discharge port ( 13b) exits the exhaust pipe, thereby eliminating interference between the exhaust gases so that the output of the engine does not drop.

As described above, according to the exhaust manifold structure of a vehicle according to the present invention, the exhaust manifold for passing the high-pressure exhaust gas discharged from the engine to the exhaust pipe is provided with a plurality of intake ports that are shared between the inlets of which the ignition order of the cylinder is not adjacent. Since it is formed so that the exhaust gas can be excluded when discharging the exhaust gas there is an advantage that the output is increased in comparing the output of the same models.

Claims (1)

An exhaust manifold equipped with a plurality of inlets 12 connected to each combustion chamber to collect exhaust gas discharged after combustion, and an outlet 13 extending from the plurality of inlets 12 and integrated at the bottom thereof. In The first port 12a and the fourth port 12d which are not adjacent to the ignition order of the engine in the inlet 12 share another first port which is not adjacent to the ignition order of the engine while sharing the first outlet 13a. 12b and the third port 12c are formed so as to share the second discharge port (13b).