KR20100064962A - Oil separator structure - Google Patents

Abstract

PURPOSE: An oil separator structure is provided to enable efficient oil collection through a one-way path for blow-by gas and a wide gap between partitions. CONSTITUTION: An oil separator structure is configured as follows. Partitions(151) form a one-way path in which blow-by gas flows in a specific direction. The partitions are formed in a wide structure to maximize the area that a space formed by the partitions makes contact with blow-by gas. The inner bottom of the oil separator along which blow-by gas flows is inclined.

Description

Oil Separator Structure {OIL SEPARATOR STRUCTURE}

The present invention relates to an oil separator, and more particularly, the flow path of the blow-by gas is formed in a single flow path in one direction, oil collection of the blow-by gas to be carried out is easily performed, and the reverse flow of the collected oil is prevented. The present invention relates to an oil separator structure capable of increasing blow-by gas filtration efficiency.

In general, an engine of an internal combustion engine is powered by a high expansion pressure generated when fuel is ignited in a combustion chamber. At this time, there are many factors such as the high explosion pressure formed in the combustion chamber and the gap between the cylinder and the piston in the compression and expansion stroke. This causes some of the combustion gases to flow into the crankcase. The gas introduced into the crankcase from the combustion chamber is called blow-by gas.

Since the blow-by gas is generally introduced into the crankcase through the gap of the piston ring, most of the blow-by gas is mainly composed of unburned gas, but may include an oil component scattered to lubricate the inside of the cylinder. .

The blow-by gas thus produced is generally discharged into the atmosphere through a breather line through a simple oil filtration system.Blu-by-gas itself is gradually burned in consideration of the effect on the atmospheric environment as the unburned gas is the main component. Regulations are tightening. Therefore, recently, in the case of gasoline engines and engines mounted in small passenger vehicles, a blow-by gas recirculation system is applied in consideration of environmental regulations.

On the other hand, in the blow-by gas recirculation system applied to the engine, the oil component contained in the blow-by gas is input to the combustion chamber and burned to separate the oil component contained in the blow-by gas in order to prevent the exhaust gas component from deteriorating. The oil separator is mounted.

When the blow-by gas containing oil and sludge therein passes through the oil separator, the heavy gravity oil is recycled into the cylinder block, and the purified blow-by gas is discharged to the atmosphere.

However, in the conventional oil separator structure, a bent portion in which the path of blow-by gas is bent by 180 degrees is formed, and a space between partition walls formed in connection with the bent portion is formed at very narrow intervals.

When the conveying path of the blow-by gas is bent, the oil separated from the blow-by gas moves in a direction opposite to the conveying direction of the blow-by gas, thus forming an unfavorable structure for collecting oil of the blow-by gas, thereby filtering the blow-by gas. There is a problem that the efficiency is lowered, thereby increasing the consumption of oil.

In addition, there is a problem in that the volumetric limitation of the volume of the blow-by gas can be accommodated and filtered due to the partition structure of the narrow space.

An object of the present invention is to provide an oil separator structure capable of improving the oil collecting power in the blow-by gas and improving the filtration efficiency of the blow-by gas and reducing the consumption of oil.

In order to achieve the above object, the present invention provides an oil separator structure which is installed at a predetermined position on the cylinder head cover to transfer the introduced blow-by gas along the flow path formed by the partition wall to separate the oil contained in the blow-by gas. And a flow path of the blow-by gas into which the flow path formed by the partition wall flows is formed in one way, and the partition wall has a maximum contact area with the blow-by gas. It is formed in a wide structure, so that oil collection of the blow-by gas is easy, and the blow-by gas filtration efficiency can be increased.

Preferably, the bottom surface of the oil separator to which the blow-by gas of the present invention is conveyed is formed to have an inclined structure.

It is preferable that the inclination angle on the inclined lower bottom surface of the present invention forms a larger locking jaw to prevent backflow of oil.

The blow-by gas passing through the single passage allows oil to be collected in multiple stages.

The oil separator of the present invention can be applied to a FR engine vehicle, and can also be applied to a cyclone oil separator in which oil is collected by blow-by gas through a cyclone.

According to the present invention, the blow-by gas is formed in a single path that moves in one direction, and the space between the partition walls is formed in a wide structure to provide an advantageous structure for collecting oil, and the oil-collecting process of the blow-by gas is performed in several steps. It proceeds sequentially over and exerts an effect of increasing the filtration efficiency.

In addition, the lower part of the flow path through which the blow-by gas moves in the oil separator is formed to have an inclined structure, so that oil is prevented from flowing back.

In addition, due to the large space between the partition walls it is possible to reduce the pressure difference with the crankcase even at high speed operation.

Hereinafter, an oil separator according to the present invention will be described in detail with reference to the accompanying drawings.

1A to 1D are diagrams illustrating an oil separator structure according to the present invention.

1A is a plan view of an engine cylinder head cover to which an oil separator of the present invention is mounted;

FIG. 1B is an enlarged view of a portion where the oil separator of FIG. 1A is mounted and illustrates an internal flow of blow-by gas.

FIG. 1C is a cross-sectional view taken along the line B-B of FIG. 1B.

FIG. 1D is a cross-sectional view illustrating an oil separation progress step of blow-by gas in FIG. 1C.

As shown, in the structure of the oil separator 100 according to the present invention, the flow of the blow-by gas introduced into the oil separator 100 is formed in a single flow path in one direction, and the blow-by gas The space 160 between the partition walls 151 forming the flow path is formed to have a wider structure than in the related art.

In addition, as illustrated in FIGS. 1C and 1D, in the internal structure of the oil separator 100, the blow-by structure is formed by inclining the lower bottom surface 170 of the internal space 160 through which the blow-by gas flows. The oil separated from the gas moves along the inclined surface of the lower bottom surface 170 to be easily discharged through the oil drain holes 121 and 123.

At this time, the inclination angle is formed in a predetermined portion on the inclined lower bottom surface 170 is larger than the lower bottom surface 170 to form a locking step (F1, F2), so that the oil flowing on the lower bottom surface 170 does not flow back Do not. That is, when the vehicle is suddenly stopped, the oil flowing on the bottom surface 170 of the oil separator 100 may flow backward in the reverse direction to the direction in which the oil is discharged, and thus may be mixed with the blow-by gas. It lowers the efficiency.

Therefore, in the present invention, by forming a separate locking step (F1, F2) on the inclined lower bottom surface 170 of the bottom of the oil separator 100, the oil hits the locking step (F1, F2) when the oil flow back To prevent backflow.

In addition, in the structure of the oil separator 100 according to the present invention, the blow-by gas flows along a single path, and the lower bottom surface 170 of the oil separator 100 is formed in an inclined structure so that the blow-by gas is formed. Oil capture of the gas takes place step by step along the path of travel.

That is, as shown in Figure 1d, in the structure of the oil separator 100 of the present invention, the oil collection of the blow-by gas is divided into multiple stages, for example, three stages, the first first stage is pre-separation As a separation step, the oil is mainly filtered by a first cyclone 131 located first on the conveying passage of the blow-by gas, and the second step is a fine separation step, and a second located second cyclone The oil is mainly filtered by 133, and the third step is a creep oil separation step, and the locking projections F1 and F2 formed on the lower bottom surface 170 inside the oil separator and the discharge port 180 is a step in which oil is finally separated by directly hitting the blow-by gas on the stepped portion formed in step 180).

As described above, the oil separator structure of the present invention has a single flow path in which the flow of the blow-by gas flows in one direction, and is formed in a wide structure in which the space between the partition walls is greatly expanded as compared with the prior art, and the lower bottom surface in the oil separator. By forming the inclined structure, the oil contained in the blow-by gas is easily collected, and the filtration efficiency is increased by filtration of the blow-by gas sequentially in a plurality of steps.

Meanwhile, the oil separator structure of the present invention may be applied to a vehicle of a front engine rear wheel drive (FR) engine, and may also be applied to a cyclone oil separator structure in which oil is collected by blow-by gas through a cyclone.

1A and 1B show an example of an oil separator structure of a conventional FF engine;

1A to 1D are views illustrating an oil separator structure according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100: oil separator 110: cylinder head cover

121,123: oil drain hole 131,133: cyclone

140: oil drain 151: partition

170: bottom bottom 180: blow-by gas outlet

Claims (7)

In the oil separator structure which is installed at a certain position on the cylinder head cover to transfer the introduced blow-by gas along the flow path formed by the partition wall to separate the oil contained in the blow-by gas, A flow path of the blow-by gas into which the flow path formed by the partition wall flows is formed in a single flow path flowing in one direction, The partition wall has an oil separator structure in which a space formed by the partition wall has a wide structure in which the contact area with the blow-by gas is maximized. The method according to claim 1, And an oil separator structure in which a lower bottom surface of the oil separator to which the blow-by gas is transferred is inclined. The method according to claim 2, An oil separator structure in which a locking step is formed to prevent backflow of oil at a predetermined portion on the inclined lower bottom surface. The method according to claim 3, The locking step is an oil separator structure consisting of a bottom surface having a larger slope than the slope of the bottom bottom surface. The method according to claim 1, The blow-by gas passing through the single flow path is an oil separator structure in which oil is collected in multiple stages. The method according to any one of claims 1 to 5, The oil separator structure is an oil separator applied to the FR engine vehicle. The method according to any one of claims 1 to 5, The oil separator structure is an oil separator structure through which the oil of the blow-by gas is collected through a cyclone.

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