CN114961922B - Oil-gas separator assembly and vehicle - Google Patents
Oil-gas separator assembly and vehicle Download PDFInfo
- Publication number
- CN114961922B CN114961922B CN202110212909.3A CN202110212909A CN114961922B CN 114961922 B CN114961922 B CN 114961922B CN 202110212909 A CN202110212909 A CN 202110212909A CN 114961922 B CN114961922 B CN 114961922B
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- oil
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- gas
- engine
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 37
- 238000002485 combustion reaction Methods 0.000 claims abstract description 9
- 239000003921 oil Substances 0.000 claims description 145
- 239000010705 motor oil Substances 0.000 claims description 14
- 238000009423 ventilation Methods 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 5
- 238000003915 air pollution Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 14
- 230000009471 action Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000000694 effects 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
- 238000009826 distribution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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, and the accommodating space comprises a first cavity, a second cavity and a third cavity which are mutually communicated; the oil gas separating device comprises an oil gas separator body, a first oil return hole, a second oil return hole, a third oil return hole, a fourth oil return hole, a fifth oil return hole and a fourth oil return hole, wherein the oil gas separator body and the first oil return hole are arranged in the first cavity, the first oil return hole is positioned below the oil gas separator body, oil gas which is leaked from an engine passes through the oil gas separator body, and the separated oil gas enters the second cavity; a pressure regulating valve for regulating the pressure of the crankcase is arranged in the second cavity, and separated oil gas enters the third cavity through the second cavity; the third cavity is internally provided with a connecting module, 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 regulating valve can regulate the pressure of the crankcase, so that the separated oil gas can be fully combusted after entering the air inlet manifold, and the 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 the engine, the existing oil-gas separator is designed, and separated oil gas directly enters an intake manifold to participate in combustion, so that the condition that the emission does not reach the standard is possibly caused. Based on this, 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 mutually communicated; the oil-gas separator comprises a first cavity, a second cavity and a third cavity, wherein an oil-gas separator body and a first oil return hole are arranged in the first cavity, the first oil return hole is positioned below the oil-gas separator body, and oil gas which is leaked 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 the crankcase is arranged in the second cavity, and the separated oil gas enters the third cavity through the second cavity; the third cavity is internally provided with a connecting module, 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.
Optionally, the method further comprises: and the fourth cavity is communicated with the first cavity, and oil gas which is fleed out from the engine enters the first cavity after passing through the fourth cavity.
Optionally, the oil-gas separator body includes: the device comprises an air inlet, a swirl blade, a central cone and a Laval nozzle, wherein the swirl blade and the central cone are combined to form a vortex generator, 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.
Optionally, a baffle is disposed between the fourth cavity and the first cavity, an opening is disposed on the baffle, the opening is smaller than or equal to the opening range of the air inlet, and oil gas that flees from the engine can only enter the air inlet through the opening.
Optionally, the method further comprises: the oil return plate is arranged below the oil-gas separator body, the first oil return hole is formed in the oil return plate, oil separated from the oil-gas separator body flows to the oil return plate through the second oil return hole, and oil returned 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 device comprises a cover plate, a diaphragm and a pressure regulating spring, wherein the cover plate is provided with a vent hole which 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 first connection module and second connection module, first connection module is connected with the air intake manifold of engine through external vent line, the second connection module is connected with the air intake manifold through external vent line and air filter core.
Optionally, the shell is provided with mounting holes for fixing the oil-gas separator assembly, and the number of the mounting holes is at least two.
Optionally, a mounting groove is further formed in the surface, in contact with the cylinder head cover of the engine, of the shell, and the sealing ring is mounted in the mounting groove.
Another embodiment of the present invention provides a vehicle comprising the oil 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 air inlet manifold through the third cavity under the control of the negative pressure value, so that air pollution is prevented, and the emission requirement of the existing regulation can be met.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an oil-gas separator assembly according to the present invention;
FIG. 2 is a second schematic diagram of the overall structure of an oil-gas separator assembly according to the present invention;
FIG. 3 is a third schematic diagram of the overall structure of an oil-gas separator assembly according to the present invention;
FIG. 4 is a schematic diagram of the overall structure of an oil-gas separator assembly according to the present invention;
FIG. 5 is a schematic diagram of a part of the oil-gas separator body according to the present invention;
FIG. 6 is a second schematic diagram of a partial structure of an oil-gas separator according to the present invention;
FIG. 7 is a third schematic diagram of a part of the oil-gas separator according to the present invention;
FIG. 8 is a schematic diagram of a part of the oil-gas separator according to the present invention;
FIG. 9 is a schematic diagram of a part of the oil-gas separator according to the present invention;
FIG. 10 is a schematic diagram of a pressure regulating valve according to the present invention;
FIG. 11 is a second schematic diagram of a pressure regulating valve according to the present invention;
FIG. 12 is a third schematic diagram of a pressure regulating valve according to the present invention;
FIG. 13 is a schematic diagram of a connection module according to the present invention;
FIG. 14 is a second schematic diagram of a connecting module according to the present invention;
FIG. 15 is a schematic view of a check valve according to the present invention;
fig. 16 is a schematic structural view of a seal ring according to the present invention.
Symbol description:
1 first ventilation hole 12 second ventilation hole 13 mounting hole 14 sealing ring 2 first cavity 21 oil-gas separator body 211 air inlet 212 swirl vane 212 central cone 214 Laval nozzle 2141 second oil return hole 2142 contraction section 2143 throat position 2144 expansion section 215 baffle plate 22 first oil return hole 23 baffle plate 3 second cavity 31 pressure regulating valve cover plate 313 pressure regulating spring 314 vent 32 first channel 33 second channel 34 third channel 4 third channel 41 connecting module 411 first connecting module 413 second one-way valve 414 second one-way valve 5 fourth cavity 51 first air inlet 6 oil return plate 7 oil return cavity 71 oil return chamber 72 oil return one-way valve 74 third oil return hole
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided merely to facilitate a thorough understanding of embodiments of the invention. It will therefore be apparent to those skilled in the art that various changes and modifications can 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 order of execution, and the order of execution of the processes should be determined by the functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are 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 may be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.
Referring to fig. 1 to 4, an embodiment of the present invention provides an oil-gas separator assembly provided on a cylinder head cover of an engine, including: the device comprises a shell 1, wherein the shell 1 forms an accommodating space, and the accommodating space comprises a first cavity 2, a second cavity 3 and a third cavity 4 which are mutually communicated; the first cavity 2 is internally provided with an oil-gas separator body 21 and a first oil return hole 22, the first oil return hole 22 is positioned below the oil-gas separator body 21, and oil gas discharged from an engine enters the second cavity 3 after passing through the oil-gas separator body 21; a pressure regulating valve 31 for regulating the pressure of the crankcase is arranged in the second cavity 3, and the separated oil gas enters the third cavity 4 through the second cavity 3; the third cavity 4 is internally provided with a connecting module 41, the connecting module 41 is connected with an air inlet manifold of the engine, and oil gas passing through the second cavity 3 enters the air inlet manifold through the third cavity 4 to participate in combustion.
Alternatively, the oil and gas may also be referred to as an oil and gas mixture. The oil content in the oil gas which is blown out from the engine is much higher than the oil content in the oil gas which is separated by the oil separator body 21. The substance separated by the oil separator body 21 may not contain engine oil, and the substance separated by the oil separator body 21 in the present invention is a gas not containing engine oil.
The oil-gas separator assembly is arranged on a cylinder head cover of the engine, and oil gas exhausted by the engine can enter the oil-gas separator assembly through the crankcase in the running 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, 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 after the separated oil gas enters the air inlet manifold through the third cavity 4 under the control of the negative pressure value, the oil gas can be fully combusted, the air pollution is prevented, and the emission requirement of the existing regulation 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 fleed out from the engine enters the first cavity 2 after passing through the fourth cavity 5.
The fourth cavity 5 is provided with a first air inlet 51, and oil gas blown out from the engine enters the fourth cavity 5 through the first air inlet 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 the first cavity 2 according to reasonable route. Alternatively, the path of movement of the oil and gas within each chamber is indicated by the arrow pointing in figure 1.
As shown in fig. 5 to 9, in the oil-gas separator assembly according to the embodiment of the present invention, the oil-gas separator body 21 includes: the cyclone vane 212 and the center cone 213 are combined to form 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.
The oil gas in the crankcase enters the cyclone Laval nozzle type oil-gas separator (oil-gas separator body 21) from the air inlet 211 of the oil-gas separator body 21, and when the oil gas flows through the vortex generator, the oil gas rotates under the action of tangential force to form cyclone gas. Under the action of the rotational centrifugal force, the separated oil is collected on the inner wall surface of the laval nozzle 214, and the collected oil flows into the oil return chamber (oil reservoir 71) of the oil separator through the second oil return hole 2141. Due to the unique design of Laval nozzle 214, the oil and gas is accelerated within the convergent section 2142 (inlet to throat section) of Laval nozzle 214 while the swirling gas temperature and pressure are reduced. Because the airflow velocity in the separation chamber of the whole oil-gas separator is smaller, the airflow velocity of the swirling gas is still subsonic at the throat position 2143 of the laval nozzle 214, the airflow velocity of the swirling gas is reduced in the expansion section 2144 (throat to air outlet section) of the laval nozzle 214, the temperature and pressure of the swirling gas are increased, and the loss of the airflow pressure of the oil gas is smaller than that of the air inlet 211. Different designs of swirl vanes 212 in the swirl generator within the diverging section 2144 of Laval nozzle 214 may produce different centrifugal forces and thus different effects on the flow of swirling gas. That is, different designs of swirl vanes 212 may affect the flow of swirling gas. And further controls the flow field distribution in the flow channel (for example, the contraction section 2142 or the expansion section 2144), reduces the pressure loss, improves the flow of the swirling gas, can improve the separation efficiency of the oil-gas separator body 21, and realizes the design optimization.
Optionally, a support baffle 23 is disposed at throat location 2143 of Laval nozzle 214, support baffle 23 acting to support stationary Laval nozzle 214.
It should be noted that, swirl blades 212 and a center cone 213 on the swirl generator, the swirl blades 212 are circular arc blades, the center cone 213 is elliptical in structural design, and the swirl blades 212 are uniformly distributed on the center cone 213. At the constriction 2142 of the oil separator body 21, the separated oil flows along the second oil return hole 2141 of the laval nozzle 214 to the oil return plate 6, and the first oil return hole 22 is distributed on the oil return plate 6.
In the oil-gas separator assembly of the embodiment of the present invention, a baffle 215 is disposed between the fourth cavity 5 and the first cavity 2, an opening is disposed on the baffle 215, the opening is smaller than or equal to the opening range of the air inlet 211, and the oil gas that escapes from the engine can only enter the air 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 the oil gas that is blown out 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, so as to avoid that the oil gas blown out from the engine directly enters the air inlet manifold of the engine to participate in combustion without being separated by the oil-gas separator body 21, and reduce 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 by 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.
The oil return plate 6 is provided on the upper surface of the lower case 7. The separated oil from the oil separator body 21 is collected in the oil reservoir 71 of the lower casing 7 through the first oil return hole 22 of the oil return plate 6. The oil storage cavity 71 is internally provided with a section of oil return column 72, the bottom end of the oil return column 72 is provided with an oil return one-way valve 73, and the oil return one-way valve 73 only allows the engine oil stored in the oil return column 72 to flow out. When the pressure in the crankcase of the engine is greater 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 blowby is caused. Meanwhile, 2 third oil return holes 74 are further arranged on the lower shell 7, and part of the engine oil collected after being separated by the oil-gas separator body 21 can be returned through the third oil return holes 74.
As shown in fig. 10 to 12, in the oil-gas separator assembly according to the embodiment of the present invention, the pressure regulating valve 31 includes: the cover plate 311, the diaphragm 312 and the 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.
The oil gas separated by the swirl laval nozzle type oil-gas separator enters the pressure regulating valve 31 to regulate the crankcase pressure. The pressure regulating valve 31 regulates the gas flow rate passing through by regulating the gap between the diaphragm 312 and the vent hole 314 by balancing the elastic force of the pressure regulating spring 313, the pressure after the oil-gas separator separates the chamber (structure), and the ambient pressure. The maximum negative pressure value in the crankcase of the engine can be adjusted by adjusting the spring strength of the pressure regulating spring 313, namely, when the spring strength of the pressure regulating 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 of the embodiment of the present invention, the second cavity 3 includes: a first channel 32 and a second channel 33; the oil and gas separated by the oil and gas separator body 21 is determined to be introduced into the third chamber 4 through the first passage 32 or introduced into the third chamber 4 through the second passage 33 according to the operation state of the engine. That is, the oil and gas separated by the oil and gas separator body 21 enters the third cavity 4 through the first channel 32 or the second channel 33, depending on the operation condition of the engine, which will be described later herein.
It should be noted that the pressure regulating valve 31 further has a third channel 34, where the third channel 34 is an inflow channel of the oil gas separated by the oil-gas separator body 21, and the first channel 32 and the second channel 33 are outflow channels of the oil 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 present 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 the 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 formed by welding. Alternatively, the connection module may be, for example, a connector, the first connection module 411 may be connected to an intake manifold in a pluggable manner, and the second connection module 412 may be connected to a ventilation pipeline in a pluggable manner. A first check valve 413 and a second check valve 414 are mounted on the joint module (connection module 41), and the first check valve 413 and the second check valve 414 respectively correspond to the first ventilation hole 11 and the second ventilation hole 12 on the housing 1. Note 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 check valves. Alternatively, the structure of the check valve is shown in fig. 15.
Next, how the pressure regulating valve 31 determines whether the separated oil gas enters the third cavity 4 through the first channel 32 or the second channel 33 according to the operation state of the engine, and finally enters the intake manifold to participate in the combustion process will be specifically described.
Specifically, when the engine is operated under a low-load condition, the intake manifold of the engine is under negative pressure, and the oil gas separated by the oil-gas separator body 21 enters the intake manifold of the engine to be subjected to internal combustion after passing through the first channel 32, the first check valve 413, the first connector (the first connector is the first connecting module 411) on the connector module (the connecting module 31) and the external ventilation pipeline. When the engine is operated under the high-load working condition, the intake manifold of the engine is positive pressure, the first check valve 413 on the channel where the first channel 32 is located is closed under the action of the positive pressure of the intake manifold of the engine, and the gas pressure on the air-filtered pipeline is negative pressure. The air flow separated by the oil-gas separator body 21 enters the engine intake manifold to be burnt through the second channel 33, the second one-way valve 414, the second joint (the second joint is the second connecting module 412) on the connecting module 31 and the external ventilating pipeline together with the engine intake. Optionally, the oil-gas separator assembly of the integrated pressure regulating valve of this design is mainly used on supercharged engine. Optionally, the oil gas separated from the second cavity 3 has a movement path in the first channel 32 and the second channel 33 as indicated by the arrow 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 may be used to 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 bolts.
In the oil-gas separator assembly provided by the embodiment of the invention, the surface of the shell 1, which is contacted with the cylinder head cover of the engine, is also provided with the mounting groove, wherein the sealing ring 14 is arranged in the mounting groove.
By providing the seal ring 14 in the mounting groove, the sealability of the oil-gas separator assembly assembled with the cylinder head cover of the engine can be improved.
The oil-gas separator assembly provided by the invention has the following characteristics:
1) The oil-gas separator is characterized in that a cyclone Laval nozzle type oil-gas separator (oil-gas separator body) of the pressure regulating valve is integrated, the oil-gas separator adopts a brand-new cyclone Laval nozzle type structural design, a vortex generator is integrated in the Laval nozzle, the vortex generator can enable oil gas to rotate, separated engine oil is collected on the wall surface of the Laval nozzle under the action of 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 used for separating the gas after pressure regulation by the oil-gas separator according to the service condition of the engine and enabling the separated oil gas to enter an engine air inlet system through different channels according to different negative pressures of an engine air inlet manifold or air filtration, and finally enabling the separated oil gas to enter the air inlet manifold along with the air inlet of the air inlet system to participate in combustion;
3) The cyclone Laval nozzle type oil-gas separator of the integrated pressure regulating valve adopts a highly integrated structural design in design, and the structural design of the integrated pressure regulating valve reduces the use of other parts on the periphery of the oil-gas separator on the premise of meeting the separation efficiency of the oil-gas separator, can adjust the pressure of a crankcase according to the use condition, maintains the negative pressure requirement of the crankcase and meets the requirements of national six-law. And the maximum negative pressure value in the engine crankcase can be adjusted by adjusting the strength of the spring.
Another embodiment of the present invention provides a vehicle comprising the oil separator assembly as described above.
The oil-gas separator assembly is adopted in the vehicle, engine oil in oil gas discharged by an engine can be reused after being separated, and the pressure of a crankcase can be maintained within a reasonable negative pressure range, so that the requirement of the existing regulation on emission can be met. Thereby contributing to an increase in 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 relational terms such as first and second, and the like are 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. Moreover, the terms "comprise," "include," or any other variation thereof, are intended to cover a non-exclusive inclusion.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (9)
1. An oil and gas separator assembly, set up on the cylinder head cover of engine, characterized in that includes:
the shell forms an accommodating space, and the accommodating space comprises a first cavity, a second cavity and a third cavity which are mutually communicated;
the oil-gas separator comprises a first cavity, a second cavity and a third cavity, wherein 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 which is leaked from the 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;
a connecting module is arranged in the third cavity and 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;
further comprises:
the fourth cavity is communicated with the first cavity, and oil gas which is fleed out from the engine enters the first cavity after passing through the fourth cavity;
the oil-gas separator body includes:
the device comprises an air inlet, a swirl blade, a central cone and a Laval nozzle, wherein the swirl blade and the central cone are combined to form a vortex generator, 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.
2. The oil-gas separator assembly according to claim 1, wherein 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 leaked from the engine can only enter the air inlet through the opening.
3. The oil and gas separator assembly of claim 1, 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, engine oil separated from the oil-gas separator body flows to the oil return plate through the second oil return hole, and engine oil on the oil return plate is collected into the oil storage cavity through the first oil return hole.
4. The oil and gas separator assembly of claim 1 wherein the pressure regulating valve comprises: the device comprises a cover plate, a diaphragm and a pressure regulating spring, wherein the cover plate is provided with a vent hole which is communicated with the external environment.
5. The oil and gas separator assembly of claim 4 wherein the second cavity 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 the engine.
6. The oil and gas separator assembly according to claim 1, wherein the connection module comprises 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.
7. The oil-gas separator assembly according to claim 1, wherein 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.
8. The oil and gas separator assembly according to claim 1, wherein a surface of the housing contacting a cylinder head cover of the engine is further provided with a mounting groove, wherein a seal ring is mounted in the mounting groove.
9. A vehicle comprising an oil and gas separator assembly as claimed in any one of claims 1 to 8.
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| CN202110212909.3A CN114961922B (en) | 2021-02-25 | 2021-02-25 | Oil-gas separator assembly and vehicle |
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| CN202110212909.3A CN114961922B (en) | 2021-02-25 | 2021-02-25 | Oil-gas separator assembly and vehicle |
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| CN114961922B true CN114961922B (en) | 2023-11-24 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Family Cites Families (2)
| 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 |
| CN105090041B (en) * | 2014-04-29 | 2019-08-06 | 开利公司 | Helical-lobe compressor and water cooler with oil eliminator |
-
2021
- 2021-02-25 CN CN202110212909.3A patent/CN114961922B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
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| CN114961922A (en) | 2022-08-30 |
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