Cylinder body structure of integrated double-channel type oil-gas separation pre-filtering cavity

Abstract

The utility model discloses a cylinder body structure of an integrated double-channel type oil-gas separation pre-filtering cavity. The cylinder body structure comprises a plurality of gas inlet windows, a plurality of gas feeding channels and the pre-filtering cavity. A plurality of air inlet windows are arranged at a part of prisms on one side of a main shaft hole of the cylinder body and are communicated with a crankcase; the plurality of upper air channels are arranged in part of the prisms, and the plurality of air inlet windows are communicated with the plurality of upper air channels; the pre-filtering cavity is formed in the side wall of one side of the air cylinder body and communicates with the multiple upper air channels. Wherein one end of the respirator air inlet pipeline is communicated with the pre-filtering cavity, and the other end is communicated with an air inlet of the respirator. According to the air cylinder body structure integrating the double-channel type oil-gas separation pre-filtering cavity, the strength of the air cylinder body can be guaranteed, meanwhile, the oil-gas deceleration strip effect can be effectively formed, and the oil content at an outlet of a respirator can be reduced to a great extent.

Description

Technical Field

[0001] The utility model relates to the field of engine design and manufacturing, in particular to a cylinder body structure with an integrated dual-channel oil-gas separation pre-filter cavity. Background Art

[0002] In response to the national VI b stage emission regulations, the particle size requirement of engine emissions is increased from the exhaust pipe (engine end) to the exhaust pipe and respirator outlet (engine subsystem end). The main layout of the existing technical solutions is as follows: Figure 1 、 Figure 2 As shown, the breather 3 is arranged on the cylinder block 5, and the air is taken from the cylinder head cover 1, and is connected to the breather 3 through the pipeline 2 for oil and gas separation. The oil droplets return to the oil pan through the oil return channel of the engine body, and the gas is discharged to the atmosphere through the pipeline 4.

[0003] The current technical solution has certain risks: ① The oil and gas contain water, and there is a risk of freezing in pipeline 2 in cold environments, affecting engine safety; ② The air in the cylinder head cover has a very high oil content, which can easily cause the oil to be discharged through the exhaust pipe, resulting in a short engine refueling cycle, a short refueling cycle for customers, and high costs; ③ The particulate matter in the exhaust is inversely proportional to the separation efficiency. The lower the separation efficiency, the more particulate matter there is, and the greater the degree of environmental pollution.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0005] The purpose of the utility model is to provide a cylinder body structure with an integrated dual-channel oil-gas separation pre-filter chamber, which can effectively form an oil-gas "speed bump" effect while ensuring the strength of the cylinder body, and can greatly reduce the oil content at the respirator outlet.

[0006] To achieve the above-mentioned objectives, the utility model provides a cylinder body structure with an integrated dual-channel oil-gas separation pre-filter chamber, comprising multiple air intake windows, multiple upper air channels and a pre-filter chamber; the multiple air intake windows are arranged at a partial prism on one side of the main shaft hole of the cylinder body, and the multiple air intake windows are connected to the crankcase; the multiple upper air channels are arranged in the partial prism, and the multiple air intake windows are connected to the multiple upper air channels; the pre-filter chamber is arranged at the side wall on one side of the cylinder body, and the pre-filter chamber is connected to the multiple upper air channels; wherein one end of the respirator intake pipe is connected to the pre-filter chamber, and the other end is connected to the air inlet of the respirator.

[0007] In a preferred embodiment, the pre-filter chamber is in an inverted U-shaped structure, with one side of its lower portion communicating with a plurality of upper air channels, and the end of one side of its upper portion communicating with the air inlet pipe of the respirator.

[0008] In a preferred embodiment, the cylinder body structure of the integrated dual-channel oil-gas separation pre-filter chamber further includes a retaining rib, which is arranged between the two sides of the inverted U-shaped structure of the pre-filter chamber, and the retaining rib divides the pre-filter chamber into an inverted U-shaped structure.

[0009] In a preferred embodiment, the plurality of upper air channels include a first upper air channel and a second upper air channel, and the connection point between the second upper air channel and the pre-filter chamber faces the blocking rib.

[0010] In a preferred embodiment, the plurality of air intake windows include a first air intake window, a second air intake window and a third air intake window, the first air intake window is connected to the first upper air channel, and the second air intake window and the third air intake window are connected to the second upper air channel.

[0011] In a preferred embodiment, the cylinder body structure with an integrated dual-channel oil-gas separation pre-filter chamber also includes a cover plate, which is arranged at the pre-filter chamber. The cover plate includes an air intake port, which is used to connect to one end of the respirator air intake pipe.

[0012] In a preferred embodiment, the air intake port is communicated with the air intake cavity of the pre-filter cavity located above the retaining rib.

[0013] In a preferred embodiment, the cylinder structure with integrated dual-channel oil-gas separation pre-filter chamber further includes a breather mounting portion, which is arranged at the lower portion of the outer wall of one side of the cylinder body and located below the pre-filter chamber.

[0014] In a preferred embodiment, the cylinder structure with integrated dual-channel oil-gas separation pre-filter chamber further includes a respirator air outlet pipeline, which is connected to the exhaust port of the respirator.

[0015] In a preferred embodiment, the air intake passage of the cylinder body structure is as follows: the oil-containing gas enters the pre-filter chamber from the first air inlet window through the first upper air channel, and enters an edge of the upper part of the inverted U-shaped structure upward along the bottom of the inverted U-shaped structure; secondly, the oil-containing gas enters the pre-filter chamber from the second air inlet window and the third air inlet window through the second upper air channel; after hitting the retaining rib, the oil-containing gas turns along an edge of the lower part of the inverted U-shaped structure through the bottom of the inverted U-shaped structure upward into an edge of the upper part of the inverted U-shaped structure; finally, the two streams of oil-containing gas are discharged from the pre-filter chamber from the respirator air intake pipe.

[0016] Compared with the prior art, the cylinder body structure of the integrated dual-channel oil-gas separation pre-filter chamber of the utility model has the following beneficial effects: the present application sets a cavity structure of a pre-filter chamber in the middle and upper part of the outer wall on one side of the cylinder body, and cooperates with the cover plate to form a closed pre-filter chamber, and sets an upper air channel in part of the prism on one side of the main shaft hole of the cylinder body, and sets an air intake window on the prism to connect the upper air channel with the crankcase, and the upper air channel is gradually widened from bottom to top, and the pre-filter chamber is formed into an inverted U-shaped structure by the retaining ribs, so that the flow rate of the gas entering the air intake window, the upper air channel and the pre-filter chamber from the crankcase gradually slows down. After encountering the baffle, a large amount of oil mist in the oil and gas can be buffered and fall back by gravity, which can greatly reduce the oil content at the breather outlet, reduce oil consumption loss, extend the oil replenishment cycle, and greatly reduce the concentration of particulate matter in the exhaust, greatly reducing pollution to the environment; in addition, the breather of this scheme is arranged at the lower part of the outer wall of the cylinder body and below the pre-filter cavity, so that the air intake pipeline from the pre-filter to the breather is greatly shortened, which greatly reduces the problem of pipeline icing in winter, and eliminates the pre-separation device and built-in oil circuit layout of the cylinder head cover, which greatly simplifies the air intake structure of the breather. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structural layout of a Qutong system according to an embodiment of the prior art;

[0018] Figure 2 It is a schematic diagram of the side view of the structural arrangement of a curved passage system according to an embodiment of the prior art;

[0019] Figure 3 This is a schematic diagram of the three-dimensional layout structure of the oil-gas separation system according to one embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the main layout structure of the oil-gas separation system according to one embodiment of the present utility model;

[0021] Figure 5 yes Figure 4 A schematic diagram of the cross-sectional structure at A-A;

[0022] Figure 6 yes Figure 4 A schematic diagram of the cross-sectional structure at B-B;

[0023] Figure 7 yes Figure 4 Schematic diagram of the cross-sectional structure at C-C;

[0024] Figure 8 yes Figure 7 Schematic diagram of the cross-sectional structure at D-D;

[0025] Figure 9This is a partial color stereoscopic structural diagram of a cylinder block according to one embodiment of the present utility model;

[0026] Figure 10 It is a color stereoscopic cross-sectional structural diagram of an upper air channel according to one embodiment of the present utility model;

[0027] Figure 11 It is a color stereoscopic structural schematic diagram of a cylinder block according to one embodiment of the present utility model.

[0028] Description of main reference numerals:

[0029] 1- cylinder head cover, 2- breather air intake pipe, 3- breather, 4- breather air outlet pipe, 5- cylinder block, 6- cover plate, 7- first air intake window, 8- second air intake window, 9- third air intake window, 10- first upper air channel, 11- pre-filter chamber, 12- air intake chamber, 13- baffle, 14- second upper air channel, 15- breather mounting part, crankcase. DETAILED DESCRIPTION

[0030] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0031] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations such as "include" or "comprising", etc., will be understood to include the stated elements or components but not to exclude other elements or other components.

[0032] like Figures 3 to 11 As shown, according to a preferred embodiment of the present invention, a cylinder body structure with an integrated dual-channel oil-gas separation pre-filter chamber includes multiple air intake windows, multiple upper air channels and a pre-filter chamber 11; multiple air intake windows are arranged at a partial prism on one side of the main shaft hole of the cylinder body 5, and multiple air intake windows are connected to the crankcase 16; multiple upper air channels are arranged in the partial prism, and multiple air intake windows are connected to multiple upper air channels; the pre-filter chamber 11 is arranged at the side wall on one side of the cylinder body 5, and the pre-filter chamber 11 is connected to multiple upper air channels; wherein one end of the respirator intake pipe 2 is connected to the pre-filter chamber 11, and the other end is connected to the air inlet of the respirator 3.

[0033] See also Figure 8 In some embodiments, the pre-filter chamber 11 is an inverted U-shaped structure, a lower side of the inverted U-shaped structure is connected to multiple upper air channels, and an end of an upper side is connected to the respirator air inlet pipe 2.

[0034] In some embodiments, the cylinder body structure with an integrated dual-channel oil-gas separation pre-filter chamber further includes a retaining rib 13, which is disposed between two sides of the inverted U-shaped structure of the pre-filter chamber 11. The retaining rib 13 divides the pre-filter chamber 11 into an inverted U-shaped structure.

[0035] In some embodiments, the pre-filter chamber 11 is a nearly rectangular depression provided in the upper middle portion of the outer wall of one side of the cylinder body 5 . By providing a retaining rib 13 on one side, the rectangular depression is transformed into an inverted U-shaped structure.

[0036] In some embodiments, the plurality of upper air channels include a first upper air channel 10 and a second upper air channel 14 , and the connection point between the second upper air channel 14 and the pre-filter chamber 11 faces the retaining rib 13 .

[0037] In some embodiments, the plurality of air intake windows include a first air intake window 7 , a second air intake window 8 and a third air intake window 9 , the first air intake window 7 is connected to the first upper air channel 10 , and the second air intake window 8 and the third air intake window 9 are connected to the second upper air channel 14 .

[0038] In the prior art, the prisms on both sides of the main shaft hole of the cylinder block 5 are generally solid. Now, part of the interior of the prism on one side is set to be hollow to form an upper air channel, and an air intake window is set on the outer wall of the lower part of the prism so that the upper air channel is connected to the crankcase 16 through the air intake window. The oil-containing gas in the crankcase 16 can enter the pre-filter chamber 11 through the air intake window and the upper air channel.

[0039] In some embodiments, the cylinder body structure with an integrated dual-channel oil-gas separation pre-filter chamber also includes a cover plate 6, which is arranged on the pre-filter chamber 11 (the cover plate 6 is arranged on the recess in the upper middle part of the outer wall of one side of the cylinder body 5 to form the pre-filter chamber 11), and the cover plate 6 includes an air intake port, which is used to connect to one end of the respirator air intake pipe 2.

[0040] In some embodiments, the air intake port is communicated with the air intake cavity 12 of the pre-filter cavity 11 located above the retaining rib 13 .

[0041] In some embodiments, the cylinder body structure with integrated dual-channel oil-gas separation pre-filter chamber further includes a breather mounting portion 15 , which is disposed at the lower portion of the outer wall of one side of the cylinder body 5 and below the pre-filter chamber 11 .

[0042] In some embodiments, the cylinder structure with integrated dual-channel oil-gas separation pre-filter chamber further includes a respirator air outlet pipeline 4 , which is in communication with the exhaust port of the respirator 3 .

[0043] In some embodiments, see Figure 8The red shear head shows the direction of the air intake passage of the cylinder structure as follows: the oil-containing gas enters the pre-filter chamber 11 from the first air inlet window 7 through the first upper air channel 10, and enters an upper side of the inverted U-shaped structure along the bottom of the inverted U-shaped structure; secondly, the oil-containing gas enters the pre-filter chamber 11 from the second air inlet window 8 and the third air inlet window 9 through the second upper air channel 14; after hitting the retaining rib 13, the oil-containing gas turns and goes along an lower side of the inverted U-shaped structure through the bottom of the inverted U-shaped structure to enter an upper side of the inverted U-shaped structure; finally, the two streams of oil-containing gas are discharged from the pre-filter chamber 11 from the respirator air inlet pipe 2.

[0044] In some embodiments, two air inlet windows are provided on the first upper air channel 10. The main reason is that the entrance of the first upper air channel 10 into the pre-filter chamber 11 faces the baffle 13. This arrangement allows more oil-containing gas to enter the pre-filter chamber 11 through the second air inlet window 8 and the third air inlet window 9 via the second upper air channel 14, and condense into oil droplets after hitting the baffle 13 and falling back into the crankcase 16. The entrance of the first upper air channel 10 into the pre-filter chamber 11 faces the U-shaped bottom of the U-shaped structure. Therefore, only one first air inlet window 7 is provided on the first upper air channel 10. In this way, the amount of oil-containing gas entering the pre-filter chamber 11 from the first upper air channel 10 is relatively small. After the gas enters the pre-filter chamber 11, the space is larger and the flow rate is slower. Another part of the oil mist will condense into oil droplets and flow back into the crankcase 16. In this way, when the two streams of oil-containing gas converge in the air intake chamber 12 above the baffle 13, the oil mist content in the gas has been greatly reduced.

[0045] In summary, the cylinder body structure of the integrated dual-channel oil-gas separation pre-filter chamber of the utility model has the following advantages: the present application sets a cavity structure of the pre-filter chamber in the middle and upper part of the outer wall of one side of the cylinder body, and cooperates with the cover plate to form a closed pre-filter chamber, and sets an upper air channel in part of the prism on one side of the main shaft hole of the cylinder body, and sets an air intake window on the prism to connect the upper air channel with the crankcase, and the upper air channel is gradually widened from bottom to top, and the pre-filter chamber is formed into an inverted U-shaped structure by the retaining rib, so that the flow rate of the gas entering the air intake window, the upper air channel and the pre-filter chamber from the crankcase is gradually slowed down. After encountering the baffle, a large amount of oil mist in the oil and gas can be buffered and fall back by gravity, which can greatly reduce the oil content at the breather outlet, reduce oil consumption loss, extend the oil replenishment cycle, and greatly reduce the concentration of particulate matter in the exhaust, greatly reducing pollution to the environment; in addition, the breather of this scheme is arranged at the lower part of the outer wall of the cylinder body and below the pre-filter chamber, so that the air intake pipe from the pre-filter to the breather is greatly shortened, which greatly reduces the problem of pipe freezing in winter, and eliminates the pre-separation device and built-in oil circuit layout of the cylinder head cover, which greatly simplifies the air intake structure of the breather.

[0046] The foregoing descriptions of specific exemplary embodiments of the present invention are for purposes of illustration and description. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is apparent that many modifications and variations are possible in light of the foregoing teachings. The exemplary embodiments have been selected and described for the purpose of explaining the specific principles of the present invention and their practical application, thereby enabling those skilled in the art to realize and utilize a variety of exemplary embodiments of the present invention and various options and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A cylinder structure with an integrated dual-channel oil-gas separation pre-filter chamber, characterized in that: include: A plurality of air intake windows are provided at a portion of the prism on one side of the main shaft hole of the cylinder block, and the plurality of air intake windows are communicated with the crankcase; a plurality of upper air channels, which are arranged in the partial prism, and the plurality of air inlet windows are in communication with the plurality of upper air channels; as well as a pre-filter chamber, which is arranged at a side wall of one side of the cylinder body, and the pre-filter chamber is communicated with the plurality of upper air channels; One end of the respirator air inlet pipeline is connected to the pre-filter chamber, and the other end is connected to the air inlet of the respirator.

2. The cylinder structure with integrated dual-channel oil-gas separation pre-filter chamber according to claim 1, characterized in that: The pre-filter chamber is in an inverted U-shaped structure, one side of its lower portion is connected to the plurality of upper air channels, and the end of one side of its upper portion is connected to the respirator air inlet pipe.

3. The cylinder structure with integrated dual-channel oil-gas separation pre-filter chamber according to claim 2, characterized in that: It also includes a retaining rib, which is arranged between two sides of the inverted U-shaped structure of the pre-filter chamber, and the retaining rib divides the pre-filter chamber into the inverted U-shaped structure.

4. The cylinder structure with integrated dual-channel oil-gas separation pre-filter chamber according to claim 3, characterized in that: The plurality of upper air channels include a first upper air channel and a second upper air channel, and a connection point between the second upper air channel and the pre-filter chamber faces the blocking rib.

5. The cylinder structure with integrated dual-channel oil-gas separation pre-filter chamber according to claim 4, characterized in that: The plurality of air intake windows include a first air intake window, a second air intake window, and a third air intake window. The first air intake window is communicated with the first upper air channel, and the second air intake window and the third air intake window are communicated with the second upper air channel.

6. The cylinder structure with integrated dual-channel oil-gas separation pre-filter chamber according to claim 3, characterized in that: It also includes a cover plate, which is arranged on the pre-filter chamber. The cover plate includes an air intake port, and the air intake port is used to be connected to one end of the respirator's air inlet pipeline.

7. The cylinder structure with integrated dual-channel oil-gas separation pre-filter chamber according to claim 6, characterized in that: The air intake port is communicated with the air intake cavity of the pre-filter cavity located above the retaining rib.

8. The cylinder structure with integrated dual-channel oil-gas separation pre-filter chamber according to claim 4, characterized in that: It also includes a respirator mounting portion, which is arranged at the lower part of the outer wall of one side of the cylinder body and is located below the pre-filter chamber.

9. The cylinder structure with integrated dual-channel oil-gas separation pre-filter chamber according to claim 4, characterized in that: Also included is a respirator air outlet pipeline, which is communicated with the exhaust port of the respirator.

10. The cylinder structure with integrated dual-channel oil-gas separation pre-filter chamber according to claim 5, characterized in that: The air intake passage of the cylinder body structure is as follows: the oil-containing gas enters the pre-filter chamber from the first air inlet window through the first upper air channel, and enters an edge of the upper part of the inverted U-shaped structure upward along the bottom of the inverted U-shaped structure; secondly, the oil-containing gas enters the pre-filter chamber from the second air inlet window and the third air inlet window through the second upper air channel; after hitting the retaining rib, the oil-containing gas turns and enters an edge of the lower part of the inverted U-shaped structure upward along the bottom of the inverted U-shaped structure into an edge of the upper part of the inverted U-shaped structure; finally, two streams of oil-containing gas are discharged from the pre-filter chamber from the respirator air intake pipe.

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