KR20120051222A

KR20120051222A - Blow-by gas distributing device

Info

Publication number: KR20120051222A
Application number: KR1020100112555A
Authority: KR
Inventors: 전용주
Original assignee: 현대자동차주식회사
Priority date: 2010-11-12
Filing date: 2010-11-12
Publication date: 2012-05-22

Abstract

PURPOSE: A distribution device of blow-bye gases for vehicles is provided to improve the durability of an engine through preventing carbon from being piled up caused by the blow-by gas in an inlet valve. CONSTITUTION: A distribution device of blow-bye gases for vehicles comprises a distribution unit. The distribution device forms passages of the blow-by gas by connecting a cylinder head(1) to an intake manifold(5). The distribution unit directly supplies the blow-by gas collected in the cylinder head of an engine to the intake manifold. The distribution unit is a distribution pipe or a distribution hose to form the passages of the blow-by gas.

Description

Blow-by gas distributing device

The present invention relates to a blow-by gas distribution device for a vehicle, and more particularly to a blow-by gas distribution device for a vehicle that allows the blow-by gas to be evenly distributed to the multiple cylinders of the engine.

In the engine of a conventional vehicle, a blow-by gas reducing device is provided to reduce the blow-by gas leaked into the oil pan through a gap between the piston and the cylinder block to the intake tube of the engine to be re-burned.

The conventional blow-by gas reducing apparatus includes a breather hose connecting the cylinder head and the intake hose to introduce the blow-by gas leaked into the cylinder head through the gap between the piston and the cylinder block to the intake hose side of the engine. .

Accordingly, the blow-by gas leaked into the cylinder head is introduced into the intake hose through the breather hose and then into the intake manifold through the throttle body, and the blow-by gas introduced into the intake manifold is transferred to each cylinder of the engine. It enters and burns.

However, in the conventional blow-by gas reducing apparatus, when the blow-by gas flows into the intake manifold through the throttle body, only one side of the intake manifold is introduced into one side of the intake manifold, that is, one side of the intake manifold adjacent to the throttle body. Most blow-by gases are concentrated and introduced into the four cylinders of the adjacent engines, resulting in a decrease in engine output due to uneven combustion of each cylinder of the engine, and carbon deposition of the intake valve.

Accordingly, the present invention has been made in view of the above circumstances, and the blow-by gas collected in the cylinder head of the engine is dispersed evenly in each cylinder of the engine to improve the output of the engine and prevent the carbon accumulation of the intake valve. An object of the present invention is to provide a blow-by gas distribution device for a vehicle capable of improving durability.

The present invention for achieving the above object, to connect the blow-by gas collected in the cylinder head of the engine directly to the intake manifold to connect the cylinder head and the intake manifold to form a passage of the blow-by gas Provide distribution means.

Preferably, the distribution means is a distribution pipe or a distribution hose to form the passage.

The distribution pipe or the distribution hose is characterized in that the check valve for opening the passage of the distribution pipe or the distribution hose only when the negative pressure is formed in the intake manifold.

According to the blow-by-gas distribution device of the vehicle according to the present invention, the blow-by gas collected in the cylinder head of the engine allows the intake manifold to flow into the intake manifold with the outside air through the intake hose and at the same time the check valve at the occurrence of the negative pressure of the intake manifold The blow-by gas is introduced into the intake manifold through the check valve, and the blow-by gas flowing into the intake manifold through the check valve is introduced into the 2nd and 3rd cylinders of the engine, which is the central part of the intake manifold. It is possible to improve the engine output by effectively preventing the concentrated flow in the specific cylinder of the engine, and to improve the durability of the engine by effectively preventing the carbon deposited by the blow-by gas on the specific intake valve There is an effect such as.

1 is a perspective view of a blow-by gas distribution device of a vehicle according to the present invention;
2 is a detailed view of the main part of FIG.

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in detail with reference to the accompanying drawings.

1 shows a perspective view of a blow-by gas distribution device of a vehicle according to the present invention, and FIG. 2 shows a detailed view of the main parts of the vehicle, that is, a blow-by collected in the cylinder head 1 of the engine. An intake hose 3 is connected to the cylinder head 1 via a breather hose 2 to direct gas to the intake side of the engine.

One end of the intake hose (3) is connected to the intake manifold (5) via the throttle body (4), the outside air introduced through the intake hose (3) through the throttle body (4) 5) to be distributed to each cylinder of the engine.

A nipple 6, which is generally T-shaped, is disposed at an approximately center portion along the longitudinal direction of the breather hose 2. That is, the breather hose 2 is divided into two by cutting the central portion thereof, and the two breather hoses 2 are inserted into and connected to each of the two breather hoses 2 having the T-shaped ends of the nipple. By forming this one continuous passage, some blow-by gas collected in the cylinder head 1 is introduced into the intake hose 3 through the breather hose 2 and the nipple.

An extension part is integrally formed in a direction substantially perpendicular to both ends of the nipple, and one end of the distribution pipe or the distribution hose 7 is inserted and connected to the extension part as a distribution means, and the other end of the distribution pipe is connected to the intake manifold. It extends toward the central portion of the fold 5 and is connected in communication with the inside of the intake manifold 5.

Therefore, a part of the blow-by gas discharged through the cylinder head 1 is introduced into the central portion of the intake manifold 5 through the distribution pipe through the extension of the nipple.

The site where the other end of the distribution pipe is connected to the intake manifold 5 is a site between the runners of cylinder 2 and cylinder 3 of the engine. Therefore, the blow-by gas flowing into the intake manifold 5 through the distribution pipe is mainly supplied to the second and third cylinders of the engine.

On the other hand, the one-way check valve 8 is inserted into the extension portion of the nipple. The one-way check valve 8 is installed to open the extension portion of the nipple only when a negative pressure occurs in the intake manifold 5.

Therefore, when negative pressure is generated in the intake manifold 5, the blow-by gas collected in the cylinder head 1 exits the cylinder head 1 through the breather hose 2, and then a part of the breather After entering the intake hose 3 through the hose 2 and the nipple, the intake manifold 5 is introduced into the intake manifold 5 through the throttle body together with the intake air, and the other part of the blow-by gas is connected to the breather hose 2. The nipple is introduced into the central portion of the intake manifold 5 via the check valve.

Therefore, when the blow-by gas discharged from the cylinder head 1 flows into the intake manifold 5, the blow-by gas is simultaneously introduced through one side and the center portion of the intake manifold 5 so that the blow-by gas flows into the intake manifold 5. It is possible to effectively prevent the gas flow-inflow phenomenon of a particular cylinder as it is concentrated in one direction to the gas flow, thereby preventing the unevenness of the output of each cylinder of the engine and the blow-by of the intake valve of the specific cylinder. Carbon deposits due to gas concentration can also be reduced.

1-cylinder head 2-breather hose
3-intake hose 4-throttle body
5-Intake Manifold 6-Nipple
7-distribution pipe 8-check valve

Claims

And a distribution means for distributing blow-by gas collected in the cylinder head of the engine directly to the intake manifold to form a passage for the blow-by gas by connecting between the cylinder head and the intake manifold.

The apparatus of claim 1, wherein the distribution means is a distribution pipe or a distribution hose to form the passage.

The blow-by gas distribution apparatus for a vehicle according to claim 2, wherein the distribution pipe or the distribution hose is provided with a check valve for opening a passage of the distribution pipe or the distribution hose only when a negative pressure is formed in the intake manifold. .

The method of claim 3, wherein a breather hose for connecting the cylinder head and the intake hose is provided, and a nipple forming a passage of the blow-by gas is connected to the breather hose, and the check valve is installed on the nipple. Blowing gas distribution device for a vehicle, characterized in that one end of the pipe or distribution hose is connected.