JPH04107433U - Oil separation chamber of blow-by gas reduction equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To efficiently separate lubricating oil contained in the blow-by gas of an automobile engine in a plurality of oil separation chambers, and to separate oil recovery pipes or The concave portion efficiently collects oil. [Configuration] Multiple horizontal plates 20, 21 inside the rocker cover 1
is provided, and the tip opening of the recess 34 provided on the upper horizontal plate 21 is immersed into the oil reservoir of the recess 33 provided on the lower horizontal plate 20. By connecting the U-shaped tube 25 to the recess 33 and forming the oil discharge port at a position where the tip of the U-shaped tube 25 is higher than the tip of the recess 34, blow-by gas does not blow up the oil through the oil recovery path. The gas-liquid separation efficiency is increased and oil can be efficiently recovered.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to an oil separation chamber for blow-by gas in an automobile engine, and in particular to a locomotive engine. Regarding the oil separation chamber of the blow-by gas reduction device installed inside the engine cover. It is something.

0002

[Conventional technology]

In automobile engines, the gap between the combustion chamber of the engine and the side wall of the piston Blow-by gas that leaks into the crank chamber from the joints of piston rings and A blow-by gas reduction device is provided to prevent it from dispersing into the atmosphere. stop The blow-by gas reduction device returns oil mixed in the blow-by gas to the combustion chamber. , Generally, it has an oil separation chamber to prevent it from burning and being consumed.

0003 For example, a diagram showing a side cross-sectional view of an engine having a conventional blow-by gas reduction device. 7 and FIG. 8 showing a cross-sectional view of the same plane. originated from the crank chamber Blow-by gas is supplied to the horizontal plate 2 provided above the valve mechanism 3 in the rocker cover 1. It enters the inflow chamber 10 through the opening 12 of the partition plate 4, passes through the outflow chamber 11 through the opening 8 of the partition plate 4, and enters the block. The low-by gas is sucked into the engine intake system through the outlet 5. At this time, blow Big gas contains a large amount of oil mist generated from the valve train 3 and crank chamber. However, the oil first comes into contact with the oil separation wire mesh 9 and returns to liquid state. At the same time, it drips into the partition plate 4 and rocker cover 1 in the inflow chamber 10 and outflow chamber 11. When the blow-by gas collides with the wall, it returns to liquid form on the wall and falls downward from pipe 6. do. The tip of the pipe 6 opens into the oil reservoir 7, and the oil flows back due to blow-by gas. It is made sure that there is no such thing. Oil is constantly supplied to the oil reservoir 7 from the valve mechanism 3. There is. In addition, in FIGS. 7 and 8, arrow B indicates the flow of blow-by gas, and arrow C indicates the flow of blow-by gas. It shows the flow of oil (see Utility Model Application Publication No. 59-127807).

0004

[Problem that the idea aims to solve] However, in such conventional technology, the oil captured by the wire mesh 9 is Because the wire mesh 9 is in the blow-by gas flow path, it cannot fall downward, and most of the It is blown up into the inflow chamber 10. Then, it travels on the horizontal plate 2 and falls from the pipe 6. However, a considerable amount of oil may become horizontal due to engine vibration or blow-by gas flow. It is atomized again on the plate 2, carried by the blow-by gas, and discharged from the blow-by gas outlet 5. Therefore, it was not possible to reduce oil consumption.

[0005] Also, since there is no opening for the oil accumulated in the outflow chamber 11 to fall into the crank chamber, It always stays on the horizontal plate 2. Even if an attempt is made to create an opening in the outflow chamber 11, the block Low-by gas flows in from there, or oil is blown up from the valve mechanism 3. Therefore, it is impossible to install an opening.

[0006] This invention was made to solve the above-mentioned problems, and it consists of multiple horizontal plates. This improves gas-liquid separation of blow-by gas, and also prevents oil accumulated on each horizontal plate from flowing back. Blow-by gas reductor oil can be returned to the engine compartment without fear of The purpose is to provide a separate separation room.

[0007]

[Means to solve the problem]

In order to achieve the above purpose, the oil separation chamber of the blow-by gas reduction device of the present invention is as follows: Oil in the blow-by gas reduction device installed inside the rocker cover of an automobile engine. In the rocker separation room, multiple horizontal plates are installed inside the rocker cover, and partitioned by multiple horizontal plates. The oil separation chambers are connected to each other as oil separation chambers to remove the oil contained in the blow-by gas. The oil is separated and liquefied on multiple horizontal plates, and the oil is separated and liquefied on multiple horizontal plates. Attach the tip of the oil recovery pipe or recess provided on the horizontal plate to the bottom horizontal plate. It opens into the provided oil reservoir, and connects the oil outlet of this oil reservoir to the pipe or is formed at a position higher than the opening at the tip of the recess.

[0008]

[Effect]

Based on the above configuration, the present invention has multiple oil separation chambers inside the rocker cover. Since two or more chambers are formed by horizontal plates, the oil contained in the blow-by gas is Separated efficiently. The oil accumulated on each horizontal plate is The oil is collected by the pipe or recess provided in the oil recovery pipe and is quickly cranked. Fall into the room. Moreover, in all oil separation chambers formed by multiple horizontal plates, There is no backflow of oil caused by blow-by gas. In addition, when creating a recess in the horizontal plate to use as an oil recovery path, press it together with the horizontal plate. It can be manufactured by processing, and there is no need to weld pipes, so the cost is low. becomes cheaper.

[0009]

【Example】

Hereinafter, embodiments of the present invention will be described based on the drawings. Figure 1 shows the first embodiment of the present invention, in which there are two layers of water for oil separation inside the rocker cover 1. Flat plates 20 and 21 are provided.

0010 The horizontal plates 20 and 21 are provided with openings 20A and 21B, respectively. The upper and lower oil separation chambers constituted by 21 and 21 are communicated with each other. Openings 20A and 21 B are provided on opposite sides to bend the flow of blow-by gas B, but Also, the blow-by gas B strongly collides with the horizontal plates 20, 21 and the inner wall of the rocker cover 1. to ensure efficient oil separation. In addition, the code 50 is a camshaft. 5 is a blow-by gas outlet.

[0011] Here, a U-shaped tube 25 is provided on the horizontal plate 20, and gas-liquid separation is performed on the horizontal plate 20. In addition to collecting the oil that has been removed, any excess oil is returned to the crank chamber. and water A pipe 26 for oil recovery is provided on the flat plate 21 to collect oil separated on the horizontal plate 21. drop the ile. The tip of the pipe 26 is inserted into the U-shaped tube 25, and As is clear from the illustration, its tip reaches a position h lower than the outlet of the U-shaped tube 25. It's growing. Therefore, the tip of the pipe 26 is in the oil collected in the U-shaped tube 25. Since the oil in the pipe 26 is submerged to the same depth, it is possible for the oil in the pipe 26 to fall, but the blow valve There will be no influx of igas.

0012 With the above configuration, blow-by gas B can be separated into two oil separation chambers. By flowing, gas and liquid are sufficiently separated, and the blow-by gas is discharged from the blow-by gas outlet 5 to the engine. Inhaled into the intake system. The oil accumulated in the two oil separation chambers is Since the oil is collected from the pipe 26 or the U-shaped tube 25, the oil separation efficiency is high.

[0013] FIG. 2 shows a second embodiment in which a recess 28 is provided in place of the U-shaped tube 25 of the first embodiment shown in FIG. An example is shown below. An opening 29 is provided on the side of the recess 28, and the position of the opening 29 is The position is higher than the tip of the pipe 26 provided on the horizontal plate 21 and hanging down by an amount h. Therefore, as shown in FIG. This recess 28 is formed integrally with the horizontal plate 20 by press working. Therefore, the manufacturing cost is low and it can be made compact.

[0014] FIGS. 3(a) and 3(b) show the horizontal plate in the first embodiment or the second embodiment. The structure of the oil recovery pipe and oil reservoir in the case of three layers is shown. This third In the embodiment, three layers of horizontal plates 20, 21, 22 are provided as shown in the figure. Therefore, three oil separation chambers are formed, and the oil separation and recovery rate is further increased. Figure 3 In the type shown in (a), two oil recovery pipes 30 and 31 are installed concentrically. In addition, in the format shown in Fig. 3(b), the oil recovery pipes 30 and 31 are two parallel pipes. provided. Its configuration is the same as in the first and second embodiments.

[0015] FIG. 4 shows a fourth embodiment. In this fourth embodiment, an inverted stand is mounted on the lower horizontal plate 20. A shaped recess 33 is formed, and a U-shaped tube 25 is connected to the center of the bottom. So A recess 34 is formed in the upper horizontal plate 21, and the opening at the tip thereof is inserted into the recess 33. It has been submerged in an oil puddle. Also, the U-shaped tube 25 connected to the recess 33 The tip forms an oil discharge port at a position h higher than the tip of the recess 34 . child The fourth embodiment has the same function as the first embodiment, but the recesses 33 and 34 can be formed by press working, so the pipe 26 in the first embodiment is Since this is not necessary, manufacturing becomes easier and cheaper.

[0016] FIG. 5 shows a fifth embodiment, which is a substitute for the U-shaped tube 25 in the fourth embodiment shown in FIG. In addition, a recess 33 provided in the lower horizontal plate 20 and an opening 40 provided on the side thereof are applied. It is something that In this fifth embodiment, U-shaped tubes and pipes are unnecessary, and It is only necessary to press the recesses 33 and 34. Moreover, the U-shaped tube protrudes downward. Since there is no space, no extra space is required.

[0017] The sixth embodiment shown in FIG. 6 replaces the two-layer horizontal plate in the fifth embodiment shown in FIG. It has three layers of horizontal plates 20, 21, and 22. Its effect is the same as in the third embodiment. However, the recesses 33, 34, and 35 can be formed by press working in all three layers. It is something that

[0018]

[Effect of the idea]

As explained above, according to the present invention, there are multiple A horizontal plate is installed to separate the oil contained in the blow-by gas from liquid to gas. Since two or more oil separation chambers are formed, oil separation efficiency is high and multiple oil separation chambers are formed. Provide oil recovery pipes or recesses on each horizontal plate, and open the opening at each end. The blower is submerged in the oil pool provided on the bottom horizontal plate. This prevents oil gas from blowing up oil through the oil recovery path, allowing for oil recovery. Since the second pipe or recess is gathered in one place, it can be made compact. moreover , if the oil recovery path is formed with a recess, it can be manufactured by simply pressing it into a horizontal plate. Since it is possible to eliminate the need for pipes and U-shaped tubes, manufacturing costs are low. effective.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an oil separation chamber showing a first embodiment of the present invention.

FIG. 2 is a sectional view of an oil separation chamber showing a second embodiment of the present invention.

FIGS. 3(a) and 3(b) are cross-sectional views of an oil separation chamber showing a third embodiment of the present invention.

FIG. 4 is a sectional view of an oil separation chamber showing a fourth embodiment of the present invention.

FIG. 5 is a sectional view of an oil separation chamber showing a fifth embodiment of the present invention.

FIG. 6 is a sectional view of an oil separation chamber showing a sixth embodiment of the present invention.

FIG. 7 is a side sectional view of a conventional oil separation chamber.

FIG. 8 is a plan sectional view of a conventional oil separation chamber.

[Explanation of symbols]

1 Rocker cover 5 Blow-by gas outlet 20, 21, 22 horizontal board 26, 30, 31 pipe 28, 33, 34, 35 recess

Claims (1)

[Scope of utility model registration request] Claim 1: In an oil separation chamber of a blow-by gas reduction device provided in a rocker cover of an automobile engine, a plurality of horizontal plates are provided in the rocker cover, and each chamber partitioned by the plurality of horizontal plates is defined as an oil separation chamber. The oil contained in the blow-by gas is separated and liquefied on a plurality of horizontal plates. An oil separation device for a blow-by gas reduction device, characterized in that an oil reservoir is opened into an oil reservoir provided in a horizontal plate of the lowest layer, and an oil discharge port of the oil reservoir is formed at a higher position than the opening at the tip of the pipe or recess. Room.