CN114961922A - Oil-gas separator assembly and vehicle - Google Patents
Oil-gas separator assembly and vehicle Download PDFInfo
- Publication number
- CN114961922A CN114961922A CN202110212909.3A CN202110212909A CN114961922A CN 114961922 A CN114961922 A CN 114961922A CN 202110212909 A CN202110212909 A CN 202110212909A CN 114961922 A CN114961922 A CN 114961922A
- Authority
- CN
- China
- Prior art keywords
- oil
- cavity
- gas
- gas separator
- engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001105 regulatory effect Effects 0.000 claims abstract description 39
- 238000002485 combustion reaction Methods 0.000 claims abstract description 10
- 239000003921 oil Substances 0.000 claims description 141
- 239000010705 motor oil Substances 0.000 claims description 17
- 238000009423 ventilation Methods 0.000 claims description 10
- 238000003915 air pollution Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000000926 separation method Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M2013/0005—Crankcase ventilating or breathing with systems regulating the pressure in the carter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0422—Separating oil and gas with a centrifuge device
- F01M2013/0427—Separating oil and gas with a centrifuge device the centrifuge device having no rotating part, e.g. cyclone
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention provides an oil-gas separator assembly and a vehicle, wherein the oil-gas separator assembly comprises: the shell forms an accommodating space which comprises a first cavity, a second cavity and a third cavity which are communicated with each other; the first cavity is internally provided with an oil-gas separator body and a first oil return hole, the first oil return hole is positioned below the oil-gas separator body, and oil gas fleed from an engine passes through the oil-gas separator body and then enters the second cavity; a pressure regulating valve for regulating the pressure of the crankcase is arranged in the second cavity, and the separated oil gas enters the third cavity through the second cavity; and a connecting module is arranged in the third cavity, the connecting module is connected with an air inlet manifold of the engine, and oil gas passing through the second cavity enters the air inlet manifold through the third cavity to participate in combustion. The pressure of the crankcase can be adjusted by the pressure adjusting valve, so that separated oil gas can be fully combusted after entering the air inlet manifold, and air pollution is prevented.
Description
Technical Field
The invention relates to the field of automobiles, in particular to an oil-gas separator assembly and a vehicle.
Background
The crankcase ventilation system is used as a core subsystem which has important influence on the performance and emission of an engine, the existing oil-gas separator is designed, and separated oil gas directly enters an air inlet manifold to participate in combustion, so that the situation that the emission does not reach the standard can be caused. Therefore, how to reduce the emission pollution of the engine is a technical problem to be solved.
Disclosure of Invention
The invention aims to provide an oil-gas separator assembly and a vehicle, so as to reduce the emission pollution of an engine.
In order to achieve the above object, the present invention provides an oil-gas separator assembly provided on a cylinder head cover of an engine, wherein the oil-gas separator assembly includes: the shell forms an accommodating space, and the accommodating space comprises a first cavity, a second cavity and a third cavity which are communicated with each other; the first cavity is internally provided with an oil-gas separator body and a first oil return hole, the first oil return hole is positioned below the oil-gas separator body, and oil gas fleeed from the engine passes through the oil-gas separator body and then enters the second cavity after being separated; a pressure regulating valve for regulating the pressure of a crankcase is arranged in the second cavity, and the separated oil gas enters the third cavity through the second cavity; and a connecting module is arranged in the third cavity and is connected with an air inlet manifold of the engine, and oil gas in the second cavity enters the air inlet manifold to participate in combustion through the third cavity.
Optionally, the method further includes: and the fourth cavity is communicated with the first cavity, and oil gas which is blown out of the engine enters the first cavity after passing through the fourth cavity.
Optionally, the oil-gas separator body includes: the vortex generator is arranged at one end, close to the air inlet, inside the Laval nozzle, and the second oil return hole is formed in the Laval nozzle.
Optionally, a baffle is arranged between the fourth cavity and the first cavity, an opening is arranged on the baffle, the opening is smaller than or equal to the opening range of the air inlet, and oil gas fleeing from the engine can only enter the air inlet through the opening.
Optionally, the method further includes: the oil return plate is arranged below the oil-gas separator body, the first oil return hole is formed in the oil return plate, return oil separated from the oil-gas separator body flows to the oil return plate through the second oil return hole, and the return oil on the oil return plate is collected into the oil storage cavity through the first oil return hole.
Optionally, the pressure regulating valve includes: the pressure regulating device comprises a cover plate, a diaphragm and a pressure regulating spring, wherein the cover plate is provided with a vent hole, and the vent hole is communicated with the external environment.
Optionally, the second cavity includes: the oil gas separated by the oil-gas separator body enters the third cavity through the first channel or the second channel according to the running state of the engine.
Optionally, the connection module includes a first connection module and a second connection module, the first connection module is connected with an intake manifold of the engine through an external ventilation pipeline, and the second connection module is connected with the intake manifold through an external ventilation pipeline and an air filter element.
Optionally, the housing is provided with mounting holes for fixing the oil-gas separator assembly, and the number of the mounting holes is at least two.
Optionally, the surface of the housing contacting the cylinder head cover of the engine is further provided with a mounting groove, wherein the sealing ring is mounted in the mounting groove.
Another embodiment of the invention provides a vehicle comprising an oil-gas separator assembly as described above.
The technical scheme of the invention has at least the following beneficial effects:
according to the oil-gas separator assembly provided by the embodiment of the invention, when separated oil gas enters the second cavity, the pressure regulating valve can regulate the pressure of the crankcase, so that the pressure of the crankcase is maintained at a certain negative pressure value, and the separated oil gas can be fully combusted after entering the intake manifold through the third cavity under the control of the negative pressure value, so that air pollution is prevented, and the emission requirements of the existing regulations can be met.
Drawings
FIG. 1 is a schematic view of an oil-gas separator assembly according to one embodiment of the present invention;
FIG. 2 is a second schematic view of the overall structure of an oil-gas separator assembly according to the present invention;
FIG. 3 is a third schematic view of the overall structure of an oil-gas separator assembly according to the present invention;
FIG. 4 is a fourth schematic view of the overall structure of an oil-gas separator assembly according to the present invention;
FIG. 5 is a schematic view of a partial structure of an oil-gas separator body according to the present invention;
FIG. 6 is a second schematic view of a partial structure of an oil-gas separator body according to the present invention;
FIG. 7 is a third schematic view of a partial structure of an oil-gas separator body according to the present invention;
FIG. 8 is a fourth schematic view showing a partial structure of an oil-gas separator body according to the present invention;
FIG. 9 is a fifth schematic view of a partial structure of an oil-gas separator body according to the present invention;
FIG. 10 is a schematic structural view of a pressure regulating valve according to the present invention;
fig. 11 is a second schematic structural view of a pressure regulating valve according to the present invention;
fig. 12 is a third schematic structural view of a pressure regulating valve according to the present invention;
fig. 13 is a schematic structural diagram of a connection module according to the present invention;
fig. 14 is a second schematic structural diagram of a connection module according to the present invention;
FIG. 15 is a schematic structural view of a check valve according to the present invention;
fig. 16 is a schematic structural diagram of a seal ring according to the present invention.
Description of the symbols:
1 housing 11 first vent hole 12 second vent hole 13 mounting hole 14 sealing ring 2 first cavity 21 oil-gas separator body 211 air inlet 212 swirl vane 213 center cone 214 laval nozzle 2141 second oil return hole 2142 contraction section 2143 throat position 2144 expansion section 215 baffle 22 first oil return hole 23 support baffle 3 second cavity 31 pressure regulating valve 311 cover plate 312 diaphragm 313 pressure regulating spring 314 vent 32 first channel 33 second channel 34 third channel 4 third cavity 41 connection module 412 first connection module 412 second connection module 413 first one-way valve 414 second one-way valve 5 fourth cavity 51 first air inlet 6 oil return plate 7 lower housing 71 oil storage cavity 72 oil return column 73 oil return one-way valve 74 third oil return hole 23
Detailed Description
To make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help the full understanding of the embodiments of the present invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by the function and the inherent logic of the process, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.
In the embodiments provided herein, it should be understood that "B corresponding to A" means that B is associated with A from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.
Referring to fig. 1 to 4, an embodiment of the present invention provides an oil-gas separator assembly disposed on a cylinder head cover of an engine, including: the device comprises a shell 1, a first cavity 2, a second cavity 3 and a third cavity 4, wherein the shell 1 forms an accommodating space which comprises the first cavity 2, the second cavity 3 and the third cavity 4 which are communicated with each other; an oil-gas separator body 21 and a first oil return hole 22 are arranged in the first cavity 2, the first oil return hole 22 is positioned below the oil-gas separator body 21, and oil gas fleed from an engine passes through the oil-gas separator body 21 and then enters the second cavity 3 after being separated; a pressure regulating valve 31 for regulating the pressure of a crankcase is arranged in the second cavity 3, and the separated oil gas enters the third cavity 4 through the second cavity 3; a connecting module 41 is arranged in the third cavity 4, the connecting module 41 is connected with an air intake manifold of an engine, and oil gas passing through the second cavity 3 enters the air intake manifold through the third cavity 4 to participate in combustion.
Optionally, the oil gas can also be called as oil gas mixture. The oil content in the blow-by gas in the engine is much higher than the oil content in the gas separated by the gas-oil separator body 21. If the substance separated by the gas-oil separator body 21 may not contain engine oil, the substance separated by the gas-oil separator body 21 in the present invention is a gas that does not contain engine oil.
It should be noted that the oil-gas separator assembly is arranged on a cylinder head cover of the engine, and oil gas escaping from the engine can enter the oil-gas separator assembly through a crankcase in the operation process of the engine.
After the oil gas enters the first cavity 2, the oil gas separator body 21 can separate the oil gas, and the separated engine oil can flow back to the oil storage cavity 71 through the first oil return hole 22 and then enter the crankcase, so that the engine oil can be reused.
According to the oil-gas separator assembly disclosed by the invention, when separated oil gas enters the second cavity 3, the pressure regulating valve 31 can regulate the pressure of the crankcase, so that the pressure of the crankcase is maintained at a certain negative pressure value, and the separated oil gas can be fully combusted after entering the intake manifold through the third cavity 4 under the control of the negative pressure value, so that air pollution is prevented, and the emission requirements of the existing regulations can be met.
The oil-gas separator assembly of the embodiment of the invention further comprises: and the fourth cavity 5 is communicated with the first cavity 2, and oil gas which is blown out of the engine enters the first cavity 2 after passing through the fourth cavity 5.
It should be noted that the fourth chamber 5 is provided with a first intake port 51, and oil gas blown by the engine enters the fourth chamber 5 through the first intake port 51. Wherein, be provided with the first baffle that is used for changing oil gas motion path in the fourth cavity 5, under the effect of first baffle, oil gas can get into in first cavity 2 according to reasonable route. Optionally, the movement path of the oil gas in each cavity is as shown by the arrow direction in fig. 1.
As shown in fig. 5 to 9, in the oil separator assembly according to the embodiment of the present invention, the oil separator body 21 includes: the vortex generator comprises an air inlet 211, a vortex blade 212, a central cone 213 and a laval nozzle 214, wherein the vortex blade 212 and the central cone 213 are combined into a vortex generator, the vortex generator is arranged at one end, close to the air inlet 211, inside the laval nozzle 214, and the laval nozzle 214 is provided with a second oil return hole 2141.
It should be noted that oil gas in the crankcase enters the separator cavity of the swirl laval nozzle type oil-gas separator (oil-gas separator body 21) from the gas inlet 211 of the oil-gas separator body 21, and when the oil gas flows through the swirl generator, the oil gas rotates under the action of tangential force to form swirl gas. Under the action of the rotating centrifugal force, the separated engine oil is collected on the inner wall surface of the laval nozzle 214, and the collected engine oil flows into the oil return chamber (oil storage chamber 71) of the oil separator through the second oil return hole 2141. Due to the unique design of the laval nozzle 214, the oil and gas are accelerated within the converging section 2142 (inlet to throat section) of the laval nozzle 214, while the swirling gas temperature and pressure are reduced. Because the flow velocity of the gas flow in the separation cavity of the whole oil-gas separator is small, the flow velocity of the swirling gas is still subsonic at the position 2143 of the throat of the laval nozzle 214, the flow velocity of the swirling gas is reduced in the expansion section 2144 (from the throat to the gas outlet section) of the laval nozzle 214, the temperature and the pressure of the swirling gas are increased, and the loss of the gas pressure of oil gas is smaller than that of the gas inlet 211. Within the expanded section 2144 of the laval nozzle 214, different designs of the swirl vanes 212 in the swirl generator produce different centrifugal forces and thus different effects on the flow of the swirling gas. That is, different designs of the swirl vanes 212 may affect the flow of the swirling gas. Further, the flow field distribution in the flow passage (for example, the contraction section 2142 or the expansion section 2144) is controlled, the pressure loss is reduced, the flow of the swirling flow gas is improved, the separation efficiency of the oil-gas separator body 21 can be improved, and design optimization is realized.
Optionally, a support baffle 23 is arranged at the throat position 2143 of the laval nozzle 214, and the support baffle 23 functions to support the fixed laval nozzle 214.
It should be noted that, the swirl blades 212 and the central cone 213 on the swirl generator, the swirl blades 212 are circular arc blades, the central cone 213 is designed in an elliptical structure, and the swirl blades 212 are uniformly distributed on the central cone 213. In the contraction section 2142 of the oil-gas separator body 21, the separated engine oil flows to the oil return plate 6 along the second oil return hole 2141 of the laval nozzle 214, and the first oil return holes 22 are distributed on the oil return plate 6.
In the oil-gas separator assembly according to the embodiment of the invention, the baffle 215 is arranged between the fourth cavity 5 and the first cavity 2, the baffle 215 is provided with an opening, the opening is smaller than or equal to the opening range of the gas inlet 211, and oil gas fleeed from the engine can only enter the gas inlet 211 through the opening.
It should be noted that the baffle 215 is disposed at the periphery of the air inlet 211, and the baffle 215 can isolate the fourth cavity 5 from the first cavity 2, so that oil gas escaping from the crankcase can only enter the oil-gas separator body 21 in the first cavity 2 from the air inlet 211 after passing through the fourth cavity 5, thereby preventing the oil gas escaping from the engine from directly entering the intake manifold of the engine to participate in combustion without passing through the separation of the oil-gas separator body 21, and reducing emission pollution.
The oil-gas separator assembly of the embodiment of the invention further comprises: the oil return plate 6 is arranged below the oil-gas separator body 21, wherein the first oil return hole 22 is located on the oil return plate 6, the engine oil separated from the oil-gas separator body 21 flows to the oil return plate 6 through the second oil return hole 2141, and the engine oil on the oil return plate 6 is collected into the oil storage cavity 71 through the first oil return hole 22.
Note that the oil return plate 6 is provided on the upper surface of the lower case 7. The engine oil separated by the oil separator body 21 is collected in the oil storage chamber 71 of the lower housing 7 through the first oil return hole 22 of the oil return plate 6. A section of oil return column 72 is designed in the oil storage chamber 71, and an oil return check valve 73 is designed and arranged at the bottom end of the oil return column 72, wherein the oil return check valve 73 only allows the oil stored in the oil return column 72 to flow out. When the pressure in the crankcase of the engine is larger than the pressure at the oil return column 72, the oil return check valve 73 is locked reversely, so that oil gas in the crankcase can be effectively prevented from entering the first cavity 2 through the oil return check valve 73, and reverse blow-by is caused. Meanwhile, 2 third oil return holes 74 are further arranged on the lower shell 7, and part of engine oil collected after being separated by the oil-gas separator body 21 can also be subjected to oil return through the third oil return holes 74.
As shown in fig. 10 to 12, in the oil separator assembly according to the embodiment of the present invention, the pressure regulating valve 31 includes: the pressure regulating diaphragm comprises a cover plate 311, a diaphragm 312 and a pressure regulating spring 313, wherein the cover plate 311 is provided with a vent hole 314, and the vent hole 314 is communicated with the external environment.
It should be noted that the oil gas separated by the swirl laval nozzle type oil-gas separator enters the pressure regulating valve 31 to regulate the pressure of the crankcase. The pressure regulating valve 31 regulates the gap between the diaphragm 312 and the vent hole 314 by the balance of the elastic force of the pressure regulating spring 313, the pressure after the oil-gas separator separation chamber (structure), and the ambient pressure, thereby regulating the flow rate of the gas passing through. The maximum negative pressure value in the crankcase of the engine can be adjusted by adjusting the spring strength of the pressure adjusting spring 313, namely, when the spring strength of the pressure adjusting spring 313 is different, the passing gas flow is different, and then the maximum negative pressure value in the crankcase can be adjusted.
In the oil-gas separator assembly according to the embodiment of the present invention, the second chamber 3 includes: a first channel 32 and a second channel 33; the oil gas separated by the oil-gas separator body 21 is determined to enter the third cavity 4 through the first passage 32 or enter the third cavity 4 through the second passage 33 according to the running state of the engine. That is, the separated oil and gas in the oil and gas separator body 21 enters the third cavity 4 through the first passage 32 or the second passage 33, which depends on the operation condition of the engine and will be described later herein.
It should be noted that the pressure regulating valve 31 further has a third passage 34, where the third passage 34 is an inflow passage of the separated oil and gas through the oil-gas separator body 21, and the first passage 32 and the second passage 33 are outflow passages of the oil and gas regulated by the pressure regulating valve 31.
As shown in fig. 13 to 14, in the oil-gas separator assembly according to the embodiment of the invention, the connection module 41 includes a first connection module 411 and a second connection module 412, the first connection module 411 is connected to an intake manifold of an engine through an external ventilation pipeline, and the second connection module 412 is connected to the intake manifold through an external ventilation pipeline and an air filter element.
The connection module 41 and the housing 1 are integrally welded together. Alternatively, the connection module may be a joint, for example, the first connection module 411 may be connected to the intake manifold, and the second connection module 412 may be connected to the ventilation pipe. A first check valve 413 and a second check valve 414 are arranged on the connector module (the connection module 41), and the first check valve 413 and the second check valve 414 are respectively matched and correspond to the first vent hole 11 and the second vent hole 12 on the shell 1. It should be noted that the first check valve 413 and the second check valve 414 have the same structure, and the first check valve 413 and the second check valve 414 may be collectively referred to as a check valve. Alternatively, the structure of the check valve is as shown in fig. 15.
Next, a process of how the pressure regulating valve 31 determines whether the separated oil gas enters the third cavity 4 through the first passage 32 or the second passage 33 according to the operating state of the engine, and finally enters the intake manifold to participate in combustion will be specifically described.
Specifically, when the engine operates under a low-load working condition, the engine intake manifold is at a negative pressure, and oil gas separated by the oil-gas separator body 21 enters the engine intake manifold to participate in combustion after passing through the first channel 32, the first check valve 413, the first joint (the first joint is the first connection module 411) on the joint module (the joint module is the connection module 31) and the external ventilation pipeline. When the engine operates under a high-load working condition, the engine intake manifold is in positive pressure, the first check valve 413 on the channel of the first channel 32 is closed under the action of the positive pressure of the engine intake manifold, and the gas pressure on the air-filtered pipeline is in negative pressure. The air flow separated by the oil-gas separator body 21 finally enters the engine intake manifold together with the engine intake air through the second channel 33, the second check valve 414, the second joint (i.e. the second connecting module 412) on the connecting module 31 and the external ventilation pipeline, and participates in combustion. Optionally, the oil-gas separator assembly integrated with the pressure regulating valve is mainly used on a supercharged engine. Alternatively, the moving paths of the separated oil and gas in the first channel 32 and the second channel 33 of the second cavity 3 are shown as the arrow directions in fig. 11.
According to the oil-gas separator assembly provided by the embodiment of the invention, the shell 1 is provided with the mounting holes 13 for fixing the oil-gas separator assembly, and the number of the mounting holes 13 is at least two.
The mounting hole 13 can fix the oil-gas separator assembly to the cylinder head cover of the engine. Optionally, the oil-gas separator assembly is connected with a cylinder head cover of the engine through a bolt.
In the oil-gas separator assembly of the embodiment of the invention, the surface of the shell 1, which is in contact with a cylinder head cover of an engine, is also provided with a mounting groove, wherein the sealing ring 14 is mounted in the mounting groove.
The sealing ring 14 is arranged in the mounting groove, so that the assembly tightness of the oil-gas separator assembly and a cylinder head cover of an engine can be improved.
The oil-gas separator assembly provided by the invention also has the following characteristics:
1) the oil-gas separator is characterized in that a rotational flow Laval nozzle type oil-gas separator (oil-gas separator body) of an integrated pressure regulating valve is designed in a brand-new rotational flow Laval nozzle type structure, a vortex generator is integrated in a Laval nozzle and can enable oil gas to rotate, separated engine oil is collected on the wall surface of the Laval nozzle under the action of a rotating centrifugal force, and the collected engine oil finally flows into an engine oil pan through an oil return channel;
2) the cyclone Laval type oil-gas separator integrated with the pressure regulating valve is characterized in that gas separated by the oil-gas separator and pressure regulated by the pressure regulating valve enters an engine air inlet system through different channels according to different negative pressures of an engine air inlet manifold or air filter according to the use condition of an engine, and finally the separated oil gas enters the air inlet manifold along with air inlet of the air inlet system to participate in combustion;
3) the cyclone Laval nozzle type oil-gas separator integrated with the pressure regulating valve adopts a highly integrated structural design, and on the premise of meeting the separation efficiency of the oil-gas separator, the structural design of the pressure regulating valve is integrated, so that the use of other peripheral parts of the oil-gas separator is reduced, the pressure of a crankcase can be adjusted at any time according to the use working condition, the negative pressure requirement of the crankcase is maintained, and the national six-regulation requirement is met. And the maximum negative pressure value in the crankcase of the engine can be adjusted by adjusting the strength of the spring.
Another embodiment of the invention provides a vehicle comprising an oil-gas separator assembly as described above.
The vehicle adopts the oil-gas separator assembly, can separate and reuse the engine oil in the oil gas leaked by the engine, can maintain the pressure of the crankcase in a reasonable negative pressure range, and can meet the emission requirements of the existing regulations. Thereby contributing to an improvement in the competitiveness of the vehicle in the market place.
Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (11)
1. An oil and gas separator assembly is arranged on a cylinder cover of an engine, and is characterized by comprising:
the shell forms an accommodating space, and the accommodating space comprises a first cavity, a second cavity and a third cavity which are communicated with each other;
the first cavity is internally provided with an oil-gas separator body and a first oil return hole, the first oil return hole is positioned below the oil-gas separator body, and separated oil gas enters the second cavity after the oil gas fleeed from the engine passes through the oil-gas separator body;
a pressure regulating valve for regulating the pressure of a crankcase is arranged in the second cavity, and the separated oil gas enters the third cavity through the second cavity;
and a connecting module is arranged in the third cavity and is connected with an air inlet manifold of the engine, and oil gas in the second cavity enters the air inlet manifold to participate in combustion through the third cavity.
2. An oil and gas separator assembly as in claim 1 further comprising:
and the fourth cavity is communicated with the first cavity, and oil gas which is blown out of the engine enters the first cavity after passing through the fourth cavity.
3. An oil and gas separator assembly as in claim 2, wherein the oil and gas separator body comprises:
the vortex generator is arranged at one end, close to the air inlet, inside the Laval nozzle, and a second oil return hole is formed in the Laval nozzle.
4. An oil-gas separator assembly as in claim 3, wherein a baffle is disposed between the fourth cavity and the first cavity, and an opening is disposed on the baffle, wherein the opening is smaller than or equal to the opening range of the gas inlet, and oil gas escaping from the engine can only enter the gas inlet through the opening.
5. A gas-oil separator assembly as in claim 3 further comprising:
the oil return plate is arranged below the oil-gas separator body, the first oil return hole is formed in the oil return plate, the engine oil separated from the oil-gas separator body flows to the oil return plate through the second oil return hole, and the engine oil on the oil return plate is collected into the oil storage cavity through the first oil return hole.
6. A gas-oil separator assembly as in claim 1 wherein the pressure regulating valve comprises: the pressure regulating device comprises a cover plate, a diaphragm and a pressure regulating spring, wherein the cover plate is provided with a vent hole, and the vent hole is communicated with the external environment.
7. An oil and gas separator assembly as in claim 6 wherein the second chamber comprises: the oil gas separated by the oil-gas separator body enters the third cavity through the first channel or the second channel according to the running state of an engine.
8. An oil-gas separator assembly as in claim 1 wherein the connection module comprises a first connection module and a second connection module, the first connection module is connected to the intake manifold of the engine via an external ventilation line, and the second connection module is connected to the intake manifold via an external ventilation line and an air filter element.
9. An oil-gas separator assembly as in claim 1, wherein the housing is provided with at least two mounting holes for fixing the oil-gas separator assembly.
10. An oil and gas separator assembly as in claim 1, wherein the surface of the housing that contacts the cylinder head cover of the engine is further provided with a mounting groove, wherein a seal ring is mounted in the mounting groove.
11. A vehicle comprising an oil separator assembly as claimed in any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110212909.3A CN114961922B (en) | 2021-02-25 | 2021-02-25 | Oil-gas separator assembly and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110212909.3A CN114961922B (en) | 2021-02-25 | 2021-02-25 | Oil-gas separator assembly and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114961922A true CN114961922A (en) | 2022-08-30 |
| CN114961922B CN114961922B (en) | 2023-11-24 |
Family
ID=82971826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110212909.3A Active CN114961922B (en) | 2021-02-25 | 2021-02-25 | Oil-gas separator assembly and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114961922B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060168921A1 (en) * | 2005-01-28 | 2006-08-03 | San Ford Machinery Co., Ltd. | Oil gas filtering device |
| CN103615296A (en) * | 2013-11-29 | 2014-03-05 | 长城汽车股份有限公司 | Intake manifold integrating oil-gas separation device with PCV, engine and automobile |
| US20170045053A1 (en) * | 2014-04-29 | 2017-02-16 | Carrier Corporation | Screw compressor having oil separator and water chilling unit |
| CN206753689U (en) * | 2017-06-02 | 2017-12-15 | 广西玉柴机器股份有限公司 | Built-in integration type oil-gas separator |
| CN107664367A (en) * | 2017-09-25 | 2018-02-06 | 珠海格力电器股份有限公司 | Oil separator |
| CN109736918A (en) * | 2019-03-06 | 2019-05-10 | 江西五十铃发动机有限公司 | A kind of pressure self-adjusting formula crank case vent valve of combined filtration structure |
-
2021
- 2021-02-25 CN CN202110212909.3A patent/CN114961922B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060168921A1 (en) * | 2005-01-28 | 2006-08-03 | San Ford Machinery Co., Ltd. | Oil gas filtering device |
| CN103615296A (en) * | 2013-11-29 | 2014-03-05 | 长城汽车股份有限公司 | Intake manifold integrating oil-gas separation device with PCV, engine and automobile |
| US20170045053A1 (en) * | 2014-04-29 | 2017-02-16 | Carrier Corporation | Screw compressor having oil separator and water chilling unit |
| CN206753689U (en) * | 2017-06-02 | 2017-12-15 | 广西玉柴机器股份有限公司 | Built-in integration type oil-gas separator |
| CN107664367A (en) * | 2017-09-25 | 2018-02-06 | 珠海格力电器股份有限公司 | Oil separator |
| CN109736918A (en) * | 2019-03-06 | 2019-05-10 | 江西五十铃发动机有限公司 | A kind of pressure self-adjusting formula crank case vent valve of combined filtration structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114961922B (en) | 2023-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103038479A (en) | Turbine housing for twin scroll turbocharger | |
| KR101338280B1 (en) | A multiple diffuser for a reciprocating piston combustion engine, and a reciprocating piston combustion engine | |
| CN114961922B (en) | Oil-gas separator assembly and vehicle | |
| CN112082174B (en) | Fuel nozzle, combustion chamber, gas turbine and method for preventing coking of fuel in fuel nozzle | |
| CN201148890Y (en) | Novel diaphragm type PCV valve | |
| CN113404570B (en) | Drum-type efficient oil-gas separator for diesel engine | |
| CN109611176B (en) | Oil-gas separator structure for ship engine | |
| CN211851958U (en) | Diesel engine and oil-gas separation device thereof | |
| CN208294598U (en) | Engine air cylinder cap | |
| CN112628033B (en) | Condensed water separation component, mixer with same and EGR system | |
| CN114060122B (en) | Engine crankcase forced ventilation system, engine and car | |
| CN106285832B (en) | One kind being used for the piston-engined crankcase pressure self-balancing system of Heavy End Aviation Fuel | |
| CN112431650B (en) | Crankcase forced ventilation system, supercharged engine, car | |
| CN108194166B (en) | Super-efficient oil-gas separator | |
| CN114738063A (en) | Exhaust pipe with volute, engine and vehicle | |
| CN112576335A (en) | Engine crankcase ventilation device | |
| CN217632617U (en) | Waste gas valve | |
| CN209761526U (en) | Oil-gas separator structure for ship engine | |
| CN220748368U (en) | Oil gas recovery device of motorcycle engine | |
| CN201187335Y (en) | Breather of engine | |
| CN217632616U (en) | Oil-gas separator of engine | |
| CN218882323U (en) | Oil-gas separator, engine and vehicle | |
| CN216950522U (en) | Oil-gas separator and vehicle | |
| CN212054856U (en) | Oil-gas separator | |
| CN220929508U (en) | Crankcase ventilation duct of six-cylinder diesel engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |