CN208294599U - A kind of gas and oil separating plant and internal combustion engine - Google Patents
A kind of gas and oil separating plant and internal combustion engine Download PDFInfo
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- CN208294599U CN208294599U CN201820726361.8U CN201820726361U CN208294599U CN 208294599 U CN208294599 U CN 208294599U CN 201820726361 U CN201820726361 U CN 201820726361U CN 208294599 U CN208294599 U CN 208294599U
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Abstract
The utility model relates to technical field of internal combustion engines, a kind of gas and oil separating plant and internal combustion engine are disclosed.The gas and oil separating plant includes Oil-gas Separation module, the Oil-gas Separation module is set in valve mechanism cover, the Oil-gas Separation module includes shell and along air-fuel mixture gas flow direction, is set in turn in the shell and is spaced the first separation assembly and the second separation assembly of the first pre-determined distance；Second separation assembly includes orifice plate, and line hole is provided on the orifice plate, and the orifice plate is provided with the protrusion being connected with the line hole far from the side of first separation assembly.The utility model promotes the limit value allowable and separative efficiency of built-in gs-oil separator air leakage, solves gas and oil separating plant in the prior art and occupies the problem of arrangement space is big, and system pressure drag is big in separation process, low separation efficiency.
Description
Technical field
The utility model relates to technical field of internal combustion engines more particularly to a kind of gas and oil separating plants and internal combustion engine.
Background technique
Engine at work, since there are gaps between cylinder jacket and piston, piston ring, will lead to a part containing combustion
Oil, machine oil, water vapour and other steam mixed gas enter crankcase.Above-mentioned mixed gas can by gas handling system again into
Enter Indoor Combustion of burning.But due to machine oil incomplete combustion, it is unfavorable for reaching discharge standard, therefore, is wanted to meet discharge
It asks and needs to separate machine oil from air-fuel mixture gas.
For taking the internal combustion engine respiratory system position of gas from valve mechanism cover 1 ', mainly use at present be still without
The scheme of preseparator or technical solution together with preseparator plug-in arrangement together, external hanging type oil gas as shown in Figure 1
Cyclone separator arrangement.
It is relatively low to Oil-gas Separation requirement because the air leakage of small displacement type is few in small displacement type, therefore, use
Gs-oil separator is carried out to built-in form, although gs-oil separator is built in inside valve mechanism cover, oil-gas separator structure
It is used generally as main separator, only level-one Oil-gas Separation.Under same arrangement space, it is relatively low to meet air leakage limit value.
For the type (discharge amount 5-12L) of huge discharge, the Oil-gas Separation module of internal portion only has pre-separation function
Can, that is, preseparator.Under low drain tolerance operating condition, pre-separation module oil-gas separation efficiency is low, and role is limited.
In addition, plug-in main separator 2 ' is as shown in Figure 1, the preseparator of internal portion is located at the position in figure shown in A
Set the inside at place.The structure of above-mentioned plug-in main separator 2 ', pipeline is complicated, and structural volume is big, and it is integrated not to be able to satisfy engine
Change, modular development trend.It is bigger that the overall structure of above-mentioned external hanging type separator accounts for overall space, is unfavorable for other systems
Arrangement, while because number of parts is more, the position for needing to seal is more, causes the location point easily to break down to increase, and then influence
Experience Degree of the client to product.
Meanwhile during Oil-gas Separation, cause the pressure loss of system big using filtering type separation in main separation process,
It is excessive so as to cause the gas pressure in crankcase, it cannot meet the requirements.
Utility model content
The purpose of this utility model is to provide a kind of gas and oil separating plant and internal combustion engines, for promoting built-in Oil-gas Separation
The limit value allowable and separative efficiency of device air leakage, solve in the prior art gas and oil separating plant occupy arrangement space it is big, separation
The problem of system pressure drag is big in the process, low separation efficiency.
For this purpose, the utility model uses following technical scheme:
A kind of gas and oil separating plant, including Oil-gas Separation module are provided, the Oil-gas Separation module is set to valve mechanism cover
Interior, the Oil-gas Separation module includes shell and along air-fuel mixture gas flow direction, be set in turn in the shell and
It is spaced the first separation assembly and the second separation assembly of the first pre-determined distance；
Second separation assembly includes orifice plate, line hole is provided on the orifice plate, the orifice plate is far from described first
The side of separation assembly is provided with the protrusion being connected with the line hole.
Preferably, the labyrinth structure that first separation assembly is made of multiple separative units.
It preferably, further include screen, along air-fuel mixture gas flow direction, the screen is set to after the orifice plate,
And with second pre-determined distance of orifice plate interval, the side on the screen close to the orifice plate is provided with serrate slot.
Preferably, the diameter range in the line hole is 2.5mm-4.5mm.
Preferably, further include oil back chamber, along air-fuel mixture gas flow direction, the oil back chamber be located at the screen it
Afterwards, the oil back chamber is provided with oil return opening, connects and is provided with return check valve on the pipeline of the oil return opening.
Preferably, the oil back chamber is provided with gas outlet, and the oil return opening is set to the oil back chamber close to the outlet
The side of mouth, and the extreme lower position being located in oil back chamber.
It preferably, further include connecting tube, the connecting tube is set to inside valve mechanism cover, and the connecting tube is connected to described
Outlet pipe outside gas outlet and the valve mechanism cover.
Preferably, sealing ring is provided at the gas outlet.
It preferably, further include the mounting base being set in the valve mechanism cover, the Oil-gas Separation module is set to institute
It states on mounting base.
A kind of internal combustion engine is additionally provided in the utility model, including the gas and oil separating plant.
The utility model has the beneficial effects that
Enter the entrance of gas and oil separating plant in the utility model from crankcase for pre-separation by the first separation assembly
Air-fuel mixture gas, filter out oil droplet bigger in air-fuel mixture gas, realize oil gas the first step separation, thus significantly
Reduction mixed gas in machine oil content.Second step point is carried out to the oil gas in mixed gas by the second separation assembly again
From to be discharged into atmosphere after so that the intracorporal oil content of fuel-air mixture is reached qualified requirement.
First separation assembly and the second separation assembly are integrated in Oil-gas Separation module, Oil-gas Separation module is mounted on
In valve mechanism cover.In the type of huge discharge 5L-13L in the case where high air leakage, using the built-in oil gas in the utility model
Main cyclone separator arrangement, separative efficiency is high, compared to the prior art the technical solution of external main separator, the oil of gas and oil separating plant
The volume of gas separation module greatly reduces, and greatly saves arrangement space.
In addition, Oil-gas Separation module is mounted in valve mechanism cover by above-mentioned mounting base, it can be according to different machines
Type replaces the mounting plate of different size.By adjusting the structure size of mounting base, so that Oil-gas Separation module be enable to install
It is versatile in different types, and production cost greatly reduces.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the gas and oil separating plant of the prior art in valve mechanism cover；
Fig. 2 is structural schematic diagram of the gas and oil separating plant of the utility model in valve mechanism cover；
Fig. 3 is the structural schematic diagram of the gas and oil separating plant of the utility model；
Fig. 4 is the front view of the structure of the gas and oil separating plant of the utility model；
Fig. 5 is the schematic diagram of internal structure of the gas and oil separating plant of the utility model；
Fig. 6 is the orifice plate of the utility model and the structural schematic diagram of screen；
Fig. 7 is the partial structure diagram of the gas and oil separating plant of the utility model；
Fig. 8 is the gas and oil separating plant of the utility model and the structural schematic diagram of outlet pipe.
In figure:
1 ', valve mechanism cover；2 ', plug-in main separator；
1, Oil-gas Separation module；
2, valve mechanism cover；11, shell；12, the first separation assembly；121, separative unit；1211, separating plate ontology；1212,
Bar beam；13, the second separation assembly；131, orifice plate；1311, line hole；1312, raised；132, screen；1321, serrate slot；
3, outlet pipe；
4, sealing ring；
5, oil back chamber；50, oil return opening；51, gas outlet；
6, return check valve；
7, connecting tube；
8, mounting base.
Specific embodiment
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
As shown in Fig. 2, providing a kind of gas and oil separating plant in the present embodiment, the position as shown in the B in Fig. 2 is upper
State the structure installed position of gas and oil separating plant.Above-mentioned gas and oil separating plant is mounted on inside valve mechanism cover 2, and and crankcase
(not shown) is connected to, and after the air-fuel mixture gas inside crankcase enters the interior progress Oil-gas Separation of gas and oil separating plant, is reached
To after qualified discharge standard, it is discharged in atmosphere through outlet pipe 3.
As shown in figure 3, above-mentioned gas and oil separating plant includes Oil-gas Separation module 1, Oil-gas Separation module 1 be set to it is above-mentioned such as
In valve mechanism cover 2 in Fig. 2.
Further specifically, as shown in Figure 4-Figure 6, along air-fuel mixture gas flow direction in the present embodiment, such as arrow in Fig. 4
Direction shown in head is air-fuel mixture gas flow direction.Above-mentioned Oil-gas Separation module 1 includes shell 11, the first separation assembly
12, the second separation assembly 13 and oil back chamber 5.Along air-fuel mixture gas flow direction, the setting of the second separation assembly 13 is the
After one separation assembly 12, the first separation assembly 12 and the second separation assembly 13 are spaced the first pre-determined distance, and are all set in outer
In shell 11.
Above-mentioned first separation assembly 12 enters the air-fuel mixture of the entrance of gas and oil separating plant for pre-separation from crankcase
Gas filters out oil droplet bigger in air-fuel mixture gas, the first step separation of oil gas is realized, to greatly reduce mixing
The content of machine oil in gas.Second step separation is carried out to the oil gas in mixed gas by the second separation assembly 13 again, to make
The intracorporal oil content of fuel-air mixture is discharged into atmosphere after reaching qualified requirement.
Further in specific scheme, labyrinth structure that above-mentioned first separation assembly 12 is made of multiple separative units 121.
Specifically as shown in figure 4, above-mentioned first separation assembly 12 includes that multiple structures are identical and separative unit 121 disposed in parallel, such as
Shown in Fig. 4, above-mentioned separative unit 121 is the separating plate of branching shape, and specifically, separative unit 121 includes separating plate ontology 1211
And the bar beam 1212 with the angled setting of separating plate ontology 1211, separating plate ontology 1211 include straightway and curved section,
Bar beam 1212 is provided on straightway and curved section.Two neighboring separative unit 121 forms the channel of air-fuel mixture gas,
To realize the first order Oil-gas Separation of mixed gas.
The preset distance being spaced between each separative unit 121, can be determined according to actual needs, reach as long as meeting
The requirement of first order Oil-gas Separation, and can guarantee that the pressure in crankcase is maintained within limit value.
Gas and oil separating plant in the present embodiment is the air-fuel mixture gas entered in gas and oil separating plant out of crankcase
The Oil-gas Separation of the first step is carried out in into first order separation assembly.As shown in figure 4, due to the separative unit of above-mentioned labyrinth structure
121 be Curve Design, and vortex is generated when air-flow being caused to pass through, since machine oil is different with the density of gas, so that machine oil is gentle
Body separates, and the oil droplet after separation flows to the bottom of each separative unit 121, is flowed in oil back chamber 5 after collecting.
If the distance between above-mentioned separative unit 121 interval is excessive, the effect that labyrinth structure is separated as the first order can be weakened
Fruit causes oil gas separation poor, to increase the burden of the second level separation of 132 structure of subsequent orifice plate 131 and screen.
If the distance between above-mentioned separative unit 121 interval too small, and will lead to the increase of the pressure drag in labyrinth structure, thus
The pressure further resulted in the crankcase communicated therewith is excessive, is not able to satisfy the pressure limit value of crankcase.
As shown in fig. 6, above-mentioned second separation assembly 13 includes orifice plate 131 and screen 132, along air-fuel mixture gas flowing side
To screen 132 is set to after orifice plate 131, and is spaced the second pre-determined distance, is provided with line hole 1311, screen on orifice plate 131
Serrate slot 1321,1321 face air-fuel mixture gas flow direction of serrate slot are provided on 132.
Above-mentioned oil back chamber 5 is located at after screen 132, as shown in fig. 7, being provided with oil return opening 50 on oil back chamber 5.Above-mentioned time
Gas outlet 51 is provided on oil pocket 5, oil return opening 50 is set to the side of nearly gas outlet 51, and the lowest order being located in oil back chamber 5
It sets, in conjunction with as shown in figure 4, being provided with return check valve 6 on the pipeline of connection oil return opening 50.It is above-mentioned at 50 position of oil return opening
Pressure value is maximum.
Through the air-fuel mixture gas of labyrinth structure after the shock of orifice plate 131 and screen 132, it is additionally separated,
When the line hole 1311 being arranged on orifice plate 131 strikes air-fuel mixture gas on screen 132, increases the pressure of shock, make oil
The separative efficiency of oil gas in oxygen mixture improves.
Being adsorbed on the machine oil of 131 two sides of orifice plate by the air-fuel mixture gas of orifice plate 131 also can be along orifice plate 131 to flowing down
To the bottom of orifice plate 131.Preferably, as shown in fig. 6, being provided with and line hole 1311 in orifice plate 131 close to the side of screen 132
The protrusion 1312 communicated, described raised 1312 extend 131 plane of orifice plate, and above-mentioned raised 1312 be cylinder.
Above-mentioned raised 1312 purpose, which is arranged, is, when air-fuel mixture gas is after orifice plate 131, is adsorbed on orifice plate 131
Machine oil can flow downward, during defluent, can make machine oil along protrusion 1312 lateral wall flow downward, can
It avoids machine oil from flowing directly down along orifice plate 131, so that line hole 1311 be pasted over, influences the flow velocity of air-fuel mixture gas, with
And it influences air-fuel mixture gas and passes through the separating effect after the shock screen 132 of orifice plate 131.
The machine oil that the air-fuel mixture gas separation on screen 132 generates is struck, it can be along the serrate slot 1321 of screen 132
Flow to the bottom of screen 132.
As shown in fig. 6, the diameter dimension of the size in above-mentioned line hole 1311 than in the prior art reduces, the quantity of setting increases
Add, the diameter range in the line hole 1311 in the present embodiment is 2.5mm-4.5mm.By the diameter and the increasing that reduce line hole 1311
The quantity for adding line hole 1311 increases impact force and impact area that air-fuel mixture gas hits screen 132, further mentions
High separating efficiency.In addition, distribution of the above-mentioned line hole 1311 on orifice plate 131 can be as shown in FIG. 6 in uniformly distributed state, tool
Body distribution form can be determined according to actual demand.
The above-mentioned machine oil for flowing to bottom along orifice plate 131 and screen 132 also flows in oil back chamber 5, through returning in such as Fig. 7
Hydraulic fluid port 50 is back in fuel tank, and check valve is arranged on the pipeline between fuel tank and oil return opening 50.It is flowed in above-mentioned oil return opening 50
Machine oil in pipeline is opened the return check valve 6 in Fig. 3 using the pressure in oil back chamber 5, to be back to fuel tank.
As shown in figure 8, the gas and oil separating plant in the present embodiment further includes connecting tube 7 and mounting base 8, above-mentioned connecting tube
7 are set to inside valve mechanism cover 2, and connecting tube 7 is connected to if the gas outlet 51 in Fig. 7 is with such as the outlet pipe 3 in Fig. 8, pass through
Gas after separation is discharged into atmosphere by outlet pipe 3.In addition, sealing ring 4 is provided at gas outlet 51, for the company of sealing
Gap between adapter tube 7 and gas outlet 51.Above-mentioned mounting base 8 is set in valve mechanism cover 2, and Oil-gas Separation module 1 is set to
On mounting base 8.
Because of labyrinth structure and orifice plate grid plate structure interval third pre-determined distance in above-mentioned gas and oil separating plant, and third is default
Apart from smaller, above-mentioned two structure is arranged in shell 11, is integrated into a module.Air-fuel mixture gas passes through above-mentioned
Labyrinth structure, orifice plate grid plate structure shock after, realize Oil-gas Separation.Above structure is compact, the whole knot of Oil-gas Separation module 1
For structure having a size of 40mm*55mm*150mm or so, overall structure is small in size, and gas and oil separating plant separation compared to the prior art
It is high-efficient.
In addition, above-mentioned shell 11, labyrinth structure, orifice plate 131 and screen 132 are plastic part, no non-metallic fibers are hit
The structure that cotton etc. needs long term maintenance is hit, meanwhile, because above-mentioned each structural member is plastic part, therefore, above-mentioned Oil-gas Separation module 1
Also have the advantages that lightweight is non-maintaining.
In the type of huge discharge 5L-13L in the case where high air leakage, using the built-in oil gas master in the present embodiment point
From device structure, separative efficiency is high, compared to the prior art the technical solution of external main separator, the oil gas point of gas and oil separating plant
Volume from module 1 greatly reduces, and can save arrangement space.
Oil-gas Separation module 1 is mounted in valve mechanism cover 2 by above-mentioned mounting base 8, can according to different types,
Replace the mounting plate of different size.By adjusting the structure size of mounting base 8, so that Oil-gas Separation module 1 be enable to install
It is versatile in different types, and greatly reduce production cost.Gas and oil separating plant in the present embodiment can answer
It can be applied in small displacement type in huge discharge type, different types can be applicable in.In addition, also having structure letter
Advantage single, separative efficiency is high, non-maintaining, at low cost.
In the following table 1 is the Functional Test Data of the gas and oil separating plant in the present embodiment, the calibration of a certain type in table 1
The air leakage of point refers to that the air leakage under maximum power rating, the air leakage of large torque point refer to that engine is turned round in maximum
Air leakage under square working condition.After the operating condition of 100% air leakage in table 1 refers to that the model of engine determines, engine
Air leakage determines, is attribute of engine itself.The operating condition of 150% air leakage in table 1 refers to that engine entirely uses the longevity
The air leakage limit value of the deterioration of life, because in the real engine course of work, engine operation for a period of time after, abrasion can be generated,
The increase for causing air leakage, therefore, it is necessary to the air leakages under the test engine operating condition bigger than 100% air leakage.150%
Under conditions of air leakage, after the gas and oil separating plant separation oil and gas mixed gas in the present embodiment, it still is able to reach separation and wants
It asks.And the comparative test data in table 2 in different schemes.Be in table 2 air leakage be 140L/min operating condition under, progress
Test.As can be seen that the outlet oil content in the technical program greatly reduces, oil-gas separation efficiency is improved.Meanwhile above-mentioned oil
Air separation also makes the pressure drag in respiratory system low.
The Functional Test Data of 1 gas and oil separating plant of table
2 scheme comparison's test data of table
| Serial number | Gs-oil separator | Outlet oil content | Air leakage |
| 1 | Nothing | 4.8g/h | 140L/min |
| 2 | Existing scheme | 2.58g/h | 140L/min |
| 3 | The technical program | 1.12g/h | 140L/min |
A kind of internal combustion engine is additionally provided in the present embodiment, including above-mentioned gas and oil separating plant.
Obviously, the above embodiments of the present invention is used for the purpose of clearly illustrating examples for clearly illustrating the present invention, and
It is not limitations of the embodiments of the present invention.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
Exhaustion.Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc., should be included in
Within the protection scope of the utility model claims.
Claims (10)
1. a kind of gas and oil separating plant, which is characterized in that including Oil-gas Separation module (1), Oil-gas Separation module (1) setting
In the valve mechanism cover (2), the Oil-gas Separation module (1) includes shell (11) and along air-fuel mixture gas flow direction, according to
Secondary the first separation assembly (12) and the second separation assembly (13) being set in the shell (11) and be spaced the first pre-determined distance；
Second separation assembly (13) includes orifice plate (131), is provided with line hole (1311) on the orifice plate (131), described
Orifice plate (131) is provided with the protrusion being connected with the line hole (1311) far from the side of first separation assembly (12)
(1312)。
2. gas and oil separating plant according to claim 1, which is characterized in that first separation assembly (12) is by multiple points
The labyrinth structure constituted from unit (121).
3. gas and oil separating plant according to claim 1, which is characterized in that further include screen (132), along fuel-air mixture
Body flow direction, the screen (132) are set to after the orifice plate (131), and default with the orifice plate (131) interval second
Distance, the side on the screen (132) close to the orifice plate (131) are provided with serrate slot (1321).
4. gas and oil separating plant according to claim 1, which is characterized in that the diameter range of the line hole (1311) is
2.5mm-4.5mm。
5. gas and oil separating plant according to claim 3, which is characterized in that further include oil back chamber (5), along fuel-air mixture
Body flow direction, the oil back chamber (5) are located at after the screen (132), and the oil back chamber (5) is provided with oil return opening (50),
It connects and is provided with return check valve (6) on the pipeline of the oil return opening (50).
6. gas and oil separating plant according to claim 5, which is characterized in that the oil back chamber (5) is provided with gas outlet
(51), the oil return opening (50) is set to the side of the oil back chamber (5) close to the gas outlet (51), and is located at oil back chamber
(5) extreme lower position in.
7. gas and oil separating plant according to claim 6, which is characterized in that further include connecting tube (7), the connecting tube
(7) it is internal to be set to valve mechanism cover (2), the connecting tube (7) is connected to the gas outlet (51) and the valve mechanism cover (2) outside
The outlet pipe (3) in portion.
8. gas and oil separating plant according to claim 7, which is characterized in that be provided with sealing ring at the gas outlet (51)
(4)。
9. gas and oil separating plant according to claim 1, which is characterized in that further include being set to the valve mechanism cover (2)
On mounting base (8), the Oil-gas Separation module (1) is set on the mounting base (8).
10. a kind of internal combustion engine, which is characterized in that including the described in any item gas and oil separating plants of claim 1-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820726361.8U CN208294599U (en) | 2018-05-16 | 2018-05-16 | A kind of gas and oil separating plant and internal combustion engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820726361.8U CN208294599U (en) | 2018-05-16 | 2018-05-16 | A kind of gas and oil separating plant and internal combustion engine |
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| Publication Number | Publication Date |
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| CN208294599U true CN208294599U (en) | 2018-12-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259544A (en) * | 2019-07-29 | 2019-09-20 | 广西玉柴机器股份有限公司 | A kind of high-efficiency oil-gas separating device being integrated in cylinder cover of engine |
-
2018
- 2018-05-16 CN CN201820726361.8U patent/CN208294599U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259544A (en) * | 2019-07-29 | 2019-09-20 | 广西玉柴机器股份有限公司 | A kind of high-efficiency oil-gas separating device being integrated in cylinder cover of engine |
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