JPH0455215Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an improvement of a device for separating oil particles contained in blow-by gas generated inside an engine.

[Conventional technology]

In vehicle engines, blow-by gas generated in the crankcase is not released into the atmosphere.
The oil particles contained inside are separated and returned to the intake pipe side, but in conventional treatment devices, the central axis of the separation element and the motor shaft that rotates it are separate, making it difficult to assemble. In this case, it is difficult to align the axes of both shafts, and the bearings are subject to significant wear.In order to solve this problem, the applicant proposed a device as shown in Fig. 5 (a) and (b).
It was previously proposed as No. 11414.

That is, in Fig. A, a cylindrical processing case 1 is provided with an inlet pipe 1a leading to the cylinder cover of the engine on one side and an outlet pipe 1b communicating with the air cleaner or intake pipe on the upper wall.
A motor case 2 is integrally attached to the lower side of the motor case 2, and a main shaft 3 extending through the motor case 2 and extending into the processing case 1 is rotatably supported inside the motor case 2.
The inside of the processing case 1 includes upper and lower end plates 4a,
A processing element 4 with a ring-shaped material 4c such as still wool, rock wool, or a porous material sandwiched between the coils 4b is installed between the coils 5 and the commutator 6 inside the motor case 2, and a magnet 7 is installed on the side wall of the case. The main shaft 3 and the processing element 4 are rotated at high speed by attaching the coil 5 and energizing the coil 5 through the brush 6a on the commutator 6. Upper and lower end plates 4a, 4
The motor case 2 of the lower lid 1e of the processing case 1 is provided with a large number of pins 4d arranged in an intricate manner on each of the parts b, so that the blow-by gas passes in a zigzag manner from the outside to the inside while hitting the pins 4d. A coil 5 is installed on the gas section extending inside, while a car frame 7 with a magnet 6 is installed on the lower end of the main shaft 3, and a control circuit for controlling the polarity of the motor is installed under the lower lid 1e. The main shaft 3 and the processing element 4 are rotated by attaching a built-in board 8 and energizing the coil 5 through the board 8.

[Problem that the invention attempts to solve]

By the way, the separation device described above has the advantage that the main shaft of the motor and the central shaft of the processing element are integrated, and there is no need for alignment as in the past, making it easy to assemble and causing less wear on the bearings. Since the commutator is installed near the engine and is forced to operate in a high temperature atmosphere of 80°C to 120°C, if it is used for a long period of time, the commutator with brushes as shown in Figure 5 (a) will have no brushes. There is a risk of damage.
Furthermore, a device using a control board as shown in FIG.

Therefore, the object of this invention is to provide an oil separation device that not only does not require troublesome alignment of the rotating shaft, but also has sufficient heat resistance and durability.

[Means and actions for solving problems]

As a means to achieve the above object, this invention provides a single main shaft in the center of the blow-by gas processing case and the hydraulic case, which are integrally attached, so as to be able to freely rotate between the two cases, and A blow-by gas processing element was installed in the area, while a rotating body was installed in the area inside the hydraulic case, and oil at a predetermined pressure for engine lubrication was supplied to this rotating body to rotate the main shaft at high speed. By supplying pressure oil to the rotating body, the rotating body and main shaft rotate at high speed, the processing element integrated with this also rotates at high speed, and the oil flows into the processing case through the inlet pipe. The blow-by gas crosses the processing element while colliding with it, and the oil particles contained in the gas are attracted to the surface and internal structure of the element.
This gradually aggregates and scatters toward the wall due to centrifugal action, while the gas from which the oil has been removed flows out from the center of the processing case toward the intake pipe.

〔Example〕

1 and 2 show an embodiment of this invention, and 11 is a cylindrical processing case, on one side of which is an inlet pipe 11a leading to the cylinder cover or crankcase of the engine.
is provided in the tangential direction (this may be directly horizontal), and an outlet pipe 11b connected to the air cleaner or intake pipe is provided on the side of the reservoir chamber on the upper wall, and an outlet pipe 11b is provided on the lower side of the lower wall 11e. A hydraulic case 12 is integrally attached to the.

In the center of the processing case 11 and the hydraulic case 12,
One main shaft 13 passes through both cases and is rotatably supported.
Upper end plate 14a having a plurality of through holes 14e in the center
The processing element 1 has an annular material 14e such as still wool, rock wool, or a porous metal or ceramic material sandwiched between the lower end plate 14b and the blind lower end plate 14b.
4 is attached to the hydraulic case 12, and a disc-shaped rotating body 15 is attached to the inside of the hydraulic case 12, and has a plurality of legs 15a provided at equal intervals in the circumferential direction on the periphery of the lower surface.

A radial oil passage 15b extending from the center to each leg 15a is formed in this rotating body 15, and a tangent to the case 12 is formed at the lower end side of each leg 15a in the opposite direction to the rotation direction of the rotating body 15. A spout pore 15c that opens in the direction is provided, and a central portion of the oil passage 15b communicates with a central passage 13a bored in the lower half of the main shaft 13.

Furthermore, a lower lid 16 is airtightly attached to the lower side of the hydraulic case 12 and has an oil reservoir and an introduction pipe 17a connected to a hydraulic circuit as described below.
A return pipe 17b leading to the oil pan is connected to the side of the storage chamber 5. Reference numeral 18 is an upper lid airtightly attached to the gas reservoir chamber of the processing case 11, and reference numeral 19 is a drain pipe provided at the lower part of one side of the processing case.

As shown in Fig. 3, the oil separation device described above has a hydraulic circuit in which the oil taken out from the oil pan T by the pump P is sent to the mechanical operating parts of the engine through the filter F, and is branched before the filter F. The supply pipe 17a is connected to a branch path in which a pressure regulating valve V is provided in the middle. At the same time, the inlet pipe 11a of the processing case 11 is connected to the cylinder cover or crankcase,
The outlet pipe 11b is connected to an air cleaner or intake pipe.

Therefore, by operating the pump P, oil at a predetermined pressure is supplied to the hydraulic case 12 through the introduction pipe 17a, and the oil passes from the reservoir chamber of the lower lid 16 through the central passage 13a of the main shaft 13 and the oil passage 15b of the rotating body 15. , the ejection pores 15 of each leg 15a
c is ejected toward the wall of the case 12. The oil injection reaction force causes the rotating body 15 to rotate at high speed in the direction of the arrow in FIG. is rotated at high speed.

On the other hand, blow-by gas generated inside the engine is caused by the pressure difference between the inlet side and the outlet side, and the blow-by gas is generated in the inlet pipe 11a
The gas flows into the case 11 from the side of the processing case 11, collides with the element 14 rotating at high speed, and crosses it. The blow-by gas from which oil has been removed is encouraged to adhere to the internal tissues, flows out into the gas reservoir chamber through the through hole 14c in the upper end plate and the through hole in the upper wall of the case, and returns to the intake pipe side via the outlet pipe 11b. and also,
The oil particles urged by the material 14c gradually aggregate and become larger, are scattered around by the action of centrifugal force, flow down to the case wall surface, and are returned to the oil pan T from the drain pipe 19.

A and B in FIG. 4 show other embodiments, in which case the processing element 14 includes:
A large number of pins 14d are provided on the upper and lower end plates 14a and 14b, facing each other and intertwined, and these pins 14d direct the blow-by gas flowing out from the inlet pipe 11a.
At the same time, the gas is made to pass between the pins 14d in a zigzag pattern to make it easier to separate the oil particles.In addition, an impeller 25 serving as a rotating body is disposed inside the hydraulic case 12 to rotate the main shaft. 13, and on the side of the case 12, an oil introduction pipe 17a and a return pipe 17b are arranged parallel to each other and tangentially to the storage chamber 25a of the impeller 25 in order to effectively utilize the energy of the oil. An oil passage 25b connects the two at the same time when they are installed opposite to each other.
An injection hole 25c facing the side surface of the blade of the impeller is bored inside the inlet passage, and the oil from the pump P is jetted from the injection hole 25c toward the blade. The wheel 25, rotating shaft 13, and processing element 14 are rotated at high speed. Note that the outlet passage and the return pipe may be provided perpendicularly to the inlet passage as shown by dotted lines.

[Effect of idea]

As described above, in this invention, as a blow-by gas oil separation device, one main shaft is rotatably provided in the center of the processing case and the hydraulic case installed below the processing case, and this main shaft is installed inside the processing case. A blow-by gas processing element is attached to the inside of the engine, while a rotating body is attached to the inside of the hydraulic case, and this rotating body is supplied with oil for lubricating the engine's mechanical parts to rotate the main shaft. Therefore, when assembling the device, there is no need to perform the troublesome work of aligning and connecting the shaft of the element and its rotating body, and there is no rotating part of the main shaft that can be damaged by high temperatures. It has sufficient heat resistance and durability to withstand long-term use, and has the advantage of reducing power consumption.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of one embodiment of this invention. Second
The figure is a cross-sectional view taken along the line XX. Figure 3 is a hydraulic circuit showing its arrangement. FIG. 4A is a longitudinal sectional view of another embodiment. Figure B is a cross-sectional view taken along the Y-Y line. FIG. 5A is a sectional view of one of the preceding devices. Figure B is a sectional view of another preceding device. In the figure, 11... Processing case, 11a... Inlet pipe, 11b... Outlet pipe, 12... Hydraulic case, 13... Main shaft, 13a... Center passage, 14...
...processing element, 14a, 14b...upper and lower end plates, 14c...material, 14d...pin, 15,2
5... Rotating body, 15b, 25b... Oil passage,
15c, 25c... Ejection pores.

Claims (1)

[Scope of utility model registration request] A hydraulic case is integrally attached to the lower side of a cylindrical processing case that has an inlet pipe on the side wall and an outlet pipe on the upper wall, and one main shaft is installed in the center of the processing case and the hydraulic case. A blow-by gas processing element is attached to the part inside the processing case of the main shaft, and a rotating body is attached to the part inside the hydraulic case, and the rotating body is supplied with oil at a predetermined pressure for engine lubrication. An apparatus for separating oil in blow-by gas, characterized in that the main shaft is rotated by supplying the oil.