KR19980038896A - Oil separator of blowby gas reducing device - Google Patents

Abstract

When the blow-by gas collected in the cylinder head cover is sent to the intake system for reuse, the oil component contained in the blow-by gas is completely removed to reduce the consumption of engine oil and thereby reduce harmful components of the exhaust gas. . In order to realize this, the oil separator of the blow-by gas reducing apparatus according to the present invention is composed of a body 5 and an oil separation membrane 6 extending from the body and staggered with each other; The oil component is inserted into the hole 3 of the cylinder block 2, which is a passage of the blow-by gas generated by the crank case 1 and sent to the cylinder head cover, so that the blow-by gas passes through the passage of the cylinder block. And separate the oil component to fall directly to the crankcase (selectivity: Fig. 1).

Description

Oil separator of blowby gas reducing device

The present invention relates to an oil separator of a blow-by gas reducing device, and more particularly, an oil separator that allows oil components to be separated while blow-by gas generated in a crank case is supplied to a cylinder head cover through a cylinder block. It is about.

Prior art

Gases emitted from automobiles include exhaust gases emitted from exhaust pipes, blow-by gases from engine crankcases, and fuel evaporation gases evaporated from fuel tanks and carburettors.

Here, the blow-by gas is a gas leaking through the gap of the cylinder into the crankcase, is a crankcase emission, and is a mixed gas partially oxidized with the remaining combustion gas.

Since the blow-by gas stays in the crankcase to corrode the inside of the engine and contaminate the engine oil, the blow-by gas has been discharged into the atmosphere in the past.

The blowby gas reducing device having such a function separates the gas discharged from the crankcase and collected in the cylinder head cover into the blowby gas and the engine oil component through the oil separator, and the blowby gas is separated into positive crankcase ventilation (PCV). It is fed to the intake system via a valve or breather hose to the combustion chamber.

Here, the oil separator is formed on a bottom surface of the cylinder head cover, and is composed of a breather line through which blow-by gas containing an oil component passes, and a separator formed to have a predetermined inclination inside the breather line.

By such a configuration, the blow-by gas collected in the cylinder head cover collides with the separator while passing through the breather line, and the oil component is separated from the gas component and falls.

In addition, the blow-by gas separated from the oil component as described above is introduced into the throttle body or the surge tank of the intake system through the PCV valve or breather hose and enters the combustion chamber.

In the above blow-by gas reducing apparatus, the conventional oil separator separates the oil component and blow-by gas by hitting the oil separation membrane formed on the bottom surface of the cylinder head cover, but the effect is insignificant.

For this reason, conventional blow-by gas is supplied to the intake system with a large amount of oil component, which not only increases the engine oil consumption, but also enters the throttle body and damages the airflow sensor. There is this.

In order to solve the problems of the prior art, the present invention is to completely remove the oil component of the blow-by gas generated in the crankcase, so as to reduce the consumption of engine oil, thereby lowering the harmful components of the exhaust gas do.

In addition, the present invention eliminates the conventional oil separator attached to the cylinder head cover, thereby realizing the structure simplification of the cylinder head cover.

1 is an exploded perspective view showing an oil separator of a blowby gas reducing apparatus according to the present invention.

Figure 2 is a cross-sectional view taken along the line A-A of Figure 1;

3 is a cross-sectional view taken along line B-B of FIG.

* Explanation of symbols for the main parts of the drawings

1: crank case 2: cylinder block

3: passage 4: oil separator

5: body 6: oil separator

As a means for realizing the above object, the present invention inserts an oil separator having a zigzag oil separator formed therebetween in a hole of a cylinder block which is a passage of blow-by gas generated in a crankcase and collected in a cylinder head cover. The blow-by gas is separated from the oil component while passing through the passage of the cylinder block, and the separated oil component is configured to fall directly to the crankcase.

According to this configuration, the oil separator according to the present invention completely removes the oil component contained in the blow-by gas, and then supplies only the gas component to the intake system. Therefore, it is possible to reduce the consumption of engine oil, thereby reducing the harmful components of the exhaust gas, and by simplifying the structure of the cylinder head cover by removing the oil separator of the conventional cylinder head cover.

Example

EMBODIMENT OF THE INVENTION Hereinafter, the preferred embodiment for implementing this invention is demonstrated in detail based on an accompanying drawing.

FIG. 1 is an exploded perspective view illustrating an oil separator of a blow-by gas reducing apparatus according to this embodiment, illustrating a coupling relationship with a cylinder block, and FIGS. 2 and 3 are cut lines AA and BB of FIG. 1, respectively. It is sectional drawing.

Reference numeral 1 in the drawings refers to the crankcase. In this crank case 1, blow-by gas is discharged | emitted and passed through the passage 3 of the cylinder block 2, and it collects by the cylinder head cover (not shown).

The oil separator according to this embodiment inserts an oil separator 4 into each passage 3 of the cylinder block 2 to completely remove the engine oil component contained in the blow-by gas. The blow-by gas is separated from the oil component while passing through the passage 3 of the cylinder block 2, and the oil component can be dropped into the crankcase 1 installed directly below.

More specifically, the oil separator 4 according to this embodiment has a substantially plate-like body 5 and extends inwardly inwardly from the body 5 in a zigzag shape as shown in the drawings. Oil separation membrane (6).

Since the oil separator 4 is formed of an injection molded product of synthetic resin, there is an advantage in that manufacturing is easy and cost is reduced. In addition, unlike the prior art, it is not formed in the cylinder head cover, and is manufactured separately and inserted into the passage 3 of the cylinder block 2, so that the design and manufacture of the engine is advantageous.

On the other hand, the oil separation membrane 6 is formed to be inclined toward the crank case 1, that is, directly downward, as can be seen through Figures 2 and 3, which is to increase the separation effect of the oil component, the separated oil component To promote the fall of.

According to the above-described configuration of this embodiment, the blow-by gas generated in the crank case 1 passes through the passage 3 of the cylinder block 2, and after colliding with the oil separation membrane 6 to separate the oil component, Gathered to the cylinder head cover, it is fed to the throttle body or surge tank of the intake system via a PCV valve or breather hose and reburned.

In this case, the oil component falls down on the oil separation membrane 6 and is collected again in the crankcase 1.

Through the embodiments described above, it can be seen that the oil separator of the blow-by gas reducing apparatus according to the present invention substantially solves the problems of the prior art.

That is, the present invention allows the blow-by gas, which is generated in the crankcase and contains a large amount of oil, to pass through the oil separator inserted into the cylinder block, so that the oil component is separated perfectly.

Therefore, the present invention can reduce the consumption of engine oil, thereby reducing the harmful components of the exhaust gas. In addition, by minimizing the oil component flowing into the intake system of the engine, it is possible to prevent damage to the air flow sensor.

In addition, this invention can easily realize manufacture of a cylinder head cover by removing the oil separator which was conventionally installed in the cylinder head cover.

On the other hand, the present invention is not limited to the above-described specific preferred embodiment, and any person having ordinary knowledge in the field to which the present invention belongs without departing from the gist of the present invention claimed in the claims. Would be possible.

Claims (4)

In the blow-by gas reducing apparatus which removes the engine oil component from the blow-by gas discharged from the crank case and collected by the cylinder head cover, and supplies it to the intake pipe through a PCV valve or a breather hose, the blow-by gas is a cylinder. Inserting an oil separator formed by the body and the oil separation membrane in the passage of the cylinder block passing to collect the head cover, the oil component is separated during the passage of the cylinder block is configured to fall to the crank case directly below The oil separator of blowby gas reduction apparatus. The oil separator according to claim 1, wherein the oil separation membranes are zigzag in a staggered manner. 3. The oil separator of the blowby gas reduction apparatus according to claim 2, wherein the oil separation membrane is formed at an end thereof inclined toward the crankcase. The oil separator of the blowby gas reducing apparatus according to claim 1, wherein the body and the oil separator are injection molded by a synthetic resin.