CN119042007A - Crankcase ventilation system and methanol engine - Google Patents
Crankcase ventilation system and methanol engine Download PDFInfo
- Publication number
- CN119042007A CN119042007A CN202411385829.8A CN202411385829A CN119042007A CN 119042007 A CN119042007 A CN 119042007A CN 202411385829 A CN202411385829 A CN 202411385829A CN 119042007 A CN119042007 A CN 119042007A
- Authority
- CN
- China
- Prior art keywords
- air
- assembly
- gas
- air inlet
- crankcase
- 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.)
- Pending
Links
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 238000009423 ventilation Methods 0.000 title claims abstract description 32
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 238000000926 separation method Methods 0.000 claims description 8
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 19
- 238000002485 combustion reaction Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000010705 motor oil Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010356 tongguan Substances 0.000 description 1
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
- F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
- F01M13/028—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of positive pressure
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The application provides a crankcase ventilation system and a methanol engine. The crankcase ventilation system comprises an intake manifold, a crankcase assembly, a gas-assisted oil-gas separator and a supercharging assembly. The air inlet manifold, the crankcase component, the air-assisted oil-gas separator and the supercharging component are sequentially connected through a main pipeline to form an air loop. The gas-assisted oil-gas separator is provided with a first air inlet, a second air inlet and an air outlet, the first air inlet is connected with the crankcase assembly, the air outlet is connected with the supercharging assembly, and the second air inlet is connected to a main pipeline between the air inlet manifold and the supercharging assembly through a driving pipeline. The adoption of the gas-assisted oil-gas separator can improve the reliability of the crankcase ventilation system. The driving pipeline is arranged to take air from the air-assisted oil-gas separator as a driving air source, so that the cost is low, the reliability is good, and the design and the production and the manufacture are convenient.
Description
Technical Field
The application relates to the technical field of crankcase ventilation systems, in particular to a crankcase ventilation system and a methanol engine.
Background
When the engine works, part of combustible gas mixture and combustion products are fleed into the crankcase through the piston ring and the cylinder. Under the suction of the oil-driven active oil-gas separator, the oil mist mixed gas is pre-separated by the cylinder cover, then enters the oil-gas separator through a pipeline, the separated engine oil returns to the oil pan, and the separated air source enters the combustion chamber through the air inlet pipe to participate in combustion again.
When the engine adopts methanol fuel, products after methanol combustion inevitably contain a large amount of water vapor and a small amount of unburned methanol vapor, which brings great challenges to bearing lubrication of a rotating mechanism of an oil-driven and electric oil-driven gas separator, and often causes problems of rotor clamping stagnation, bearing failure, bearing retainer fracture, qu Tongguan paths of engine oil emulsification and the like of the oil separator, and no good solution exists.
Accordingly, there is a need to design a crankcase ventilation system that addresses the above-described issues.
Disclosure of Invention
The application provides a crankcase ventilation system and a methanol engine, which have low cost and good reliability.
According to a first aspect of embodiments of the present description, there is provided a crankcase ventilation system comprising:
The air inlet manifold, the crankcase assembly, the air-assisted oil-gas separator and the pressurizing assembly are sequentially connected through a main pipeline to form an air loop, a first air inlet, a second air inlet and an air outlet are formed in the air-assisted oil-gas separator, the first air inlet is connected with the crankcase assembly, the air outlet is connected with the pressurizing assembly, and the second air inlet is connected to the main pipeline between the air inlet manifold and the pressurizing assembly through a driving pipeline.
Further, the air outlet is connected with the pressurizing assembly through a three-way valve, the three-way valve comprises an air inlet end, a first air outlet end and a second air outlet end, the air inlet end is connected with the air outlet, the first air outlet end is connected with the pressurizing assembly, and the second air outlet end is connected with the air inlet manifold through an air source branch.
Further, a one-way valve is also included, the one-way valve being disposed between the first outlet end and the plenum assembly.
Further, a regulator valve is included, the regulator valve being disposed on the air supply branch.
Further, the regulating valve is a PCV valve or an electric control butterfly valve.
Further, the supercharging assembly comprises a supercharger and an intercooler, one end of the supercharger is communicated with the first air outlet end, the other end of the supercharger is communicated with one end of the intercooler, the other end of the intercooler is communicated with the air inlet manifold, and a throttle valve is arranged on the main pipeline between the intercooler and the air inlet manifold.
Further, an air cleaner is also included and is coupled to the main conduit between the supercharging assembly and the three-way valve.
Further, the pipe diameter of the main pipeline is larger than that of the driving pipeline, wherein 1% -3% of the total output gas of the pressurizing assembly enters the gas-assisted oil-gas separator through the driving pipeline.
Further, a make-up gas source is also included, the make-up gas source being coupled to the crankcase assembly;
The crankcase assembly comprises a cylinder cover, and the air inlet manifold is communicated with a pre-separation pipeline arranged on the cylinder cover.
According to a second aspect of embodiments of the present description, there is provided a methanol engine comprising a crankcase ventilation system according to the first aspect described above.
The application has the following beneficial effects that the reliability of the crankcase ventilation system can be improved by adopting the gas-assisted oil-gas separator. The driving pipeline is arranged to take air from the air-assisted oil-gas separator as a driving air source, so that the cost is low, the reliability is good, and the design and the production and the manufacture are convenient.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and together with the description, serve to explain the principles of the specification.
Fig. 1 is a schematic diagram of the operation of the crankcase ventilation system of the application.
Reference numerals illustrate:
10-an intake manifold;
A 20-crankcase assembly, a 21-cylinder head cover;
30-gas-assisted oil-gas separator, 31-first air inlet, 32-second air inlet and 33-air outlet;
40-supercharging assembly, 41-supercharger, 42-intercooler and 43-air filter;
50-main pipeline, 51-one-way valve and 52-throttle valve;
60-driving pipeline;
70-a three-way valve;
80-gas source branch, 81-regulating valve;
90-supplementary air source.
Detailed Description
The technical solutions in the embodiments (or "implementations") of the present application will be clearly and completely described herein with reference to the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated.
If there are terms (e.g., upper, lower, left, right, front, rear, inner, outer, top, bottom, center, vertical, horizontal, longitudinal, lateral, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.) related to directional indications or positional relationships in embodiments of the present application, such terms are used merely to explain the relative positional relationships, movement, etc. between the components at a particular pose (as shown in the drawings), and if the particular pose is changed, the directional indications or positional relationships are correspondingly changed. In addition, the terms "first", "second", etc. in the embodiments of the present application are used for descriptive convenience only and are not to be construed as indicating or implying relative importance.
Next, embodiments of the present specification will be described in detail.
Referring to fig. 1, a crankcase ventilation system is disclosed. The crankcase ventilation system includes an intake manifold 10, a crankcase assembly 20, a gas-assisted oil separator 30, and a boost assembly 40. The intake manifold 10, the crankcase assembly 20, the gas-assisted oil separator 30, and the supercharging assembly 40 are connected in sequence through a main pipe 50 to form a gas circuit. A large amount of water vapor and a small amount of unburned methanol vapor circulate through the main line 50 and are returned to the crankcase assembly 20 via the intake manifold 10 again for re-combustion use.
The gas-assisted oil-gas separator 30 adopted in the application sucks the gas source in the crankcase assembly 20 by utilizing the venturi principle, the gas source is collided with the wall for separation under the pressure difference, the separated gas source enters the crankcase assembly 20 to participate in combustion again, and the separated engine oil returns to the oil pan. The application takes the gas-assisted oil-gas separator 30 and the gas taking drive of the methanol engine as cores, adopts the gas source of the methanol engine, and is self-sufficient.
The gas-assisted oil-gas separator 30 is provided with a first air inlet 31, a second air inlet 32 and an air outlet 33, and the first air inlet 31 is connected with the crankcase assembly 20. Part of the combustible mixture and combustion products that are carried by the piston rings into the crankcase assembly 20 during operation of the methanol engine may enter the gas-assisted separator 30 through the first intake port 31.
The air outlet 33 is connected to the pressurizing assembly 40. The oil gas separated by the gas-assisted oil-gas separator 30 flows into the pressurizing assembly 40 and increases the pressure and density of the oil gas under the action of the pressurizing assembly 40, thereby improving the combustion efficiency and power output, and enabling the whole methanol engine to operate and utilize energy more effectively.
The second intake port 32 is connected to the main line 50 between the intake manifold 10 and the supercharger assembly 40 by a drive line 60. Part of air sources of the methanol engine flow into the gas-assisted oil-gas separator 30 through the driving pipeline 60, no external air source is required to be additionally arranged, and the cost is low and the reliability is good. And only one driving pipeline 60 is added in the crankcase ventilation system, so that the design, the production and the manufacture are convenient.
The pipe diameter of the main pipeline 50 is larger than that of the driving pipeline 60, and 1% -3% of the total amount of output gas of the pressurizing assembly 40 enters the gas-assisted oil-gas separator 30 through the driving pipeline 60.
In another embodiment, a valve may also be provided on the drive line 60 to control the total amount of gas entering the drive line 60. The valve may be a three-way valve, which includes an air inlet end, a first air outlet end and a second air outlet end, the air inlet end is connected with the air outlet 33, the first air outlet end is connected with the supercharging assembly 40, and the second air outlet end is connected with the air inlet manifold 10 through an air source branch 80. The three-way valve is used for regulating the trend of the oil gas separated from the gas-assisted oil-gas separator 30, and the oil gas is split from the gas inlet end to the first gas outlet end or the second gas outlet end, and then flows to two different pipelines. And the total amount of gas is controlled by controlling the opening sizes of the first gas outlet end and the second gas outlet end.
The crankcase ventilation system further includes a check valve 51, the check valve 51 being disposed between the first outlet end and the plenum assembly 40. By reversely closing the check valve 51, the shortage of the air source pressure behind the pressurizing assembly 40 during the normal small-load operation of the methanol engine can be prevented, the air source pressure in the main pipeline 50 is smaller than the pressure value at the outlet of the air-assisted oil-gas separator 30, and the air source in the main pipeline 50 flows back. Meanwhile, the burden on the parts at the rear end of the one-way valve 51 is reduced, and the reliability of the methanol engine is improved.
The crankcase ventilation system further comprises a regulator valve 81, the regulator valve 81 being arranged on the air supply branch 80. During normal heavy load operation of the booster assembly 40, the air supply flows through the main conduit 50, at which time the regulator valve 81 is closed and the air supply branch 80 connected to the intake manifold 10 is free of blow-by gas. Meanwhile, the burden on the rear end parts of the regulating valve 81 is reduced, and the reliability of the methanol engine is improved.
The differential pressure flow of the air source branch 80 is regulated by a regulating valve 81, wherein the regulating valve 81 is a mechanical PCV valve, and the cost is low. In another embodiment, the regulating valve 81 is an electronically controlled butterfly valve, which is highly automated.
The supercharging assembly 40 comprises a supercharger 41 and an intercooler 42, one end of the supercharger 41 is communicated with the first air outlet end, the other end of the supercharger 41 is communicated with one end of the intercooler 42, the other end of the intercooler 42 is communicated with the air inlet manifold 10, and a throttle valve 52 is arranged on a main pipeline 50 between the intercooler 42 and the air inlet manifold 10.
The crankcase ventilation system further includes an air cleaner 43, the air cleaner 43 being in communication with the main conduit 50 between the supercharger assembly 40 and the three-way valve 70. The air filter 43 is provided with an air filtering port, and the air filter 43 can filter the sucked air to obtain fresh and clean air, so that the methanol engine can burn to ensure ideal air-fuel ratio and combustion efficiency and ensure power output.
The crankcase ventilation system further includes a supply air source 90, the supply air source 90 being connected to the crankcase assembly 20. The internal and external pressure of the crankcase assembly 20 can be balanced through the air supplementing source 90, so that the sealing problem caused by pressure change is prevented, harmful gas in the crankcase assembly 20 is effectively removed, and the operating environment of the methanol engine is kept clean and stable, thereby improving the efficiency and the service life of the engine.
The make-up air source 90 is from an auxiliary air circuit pipeline or a brake air circuit pipeline of the whole vehicle air source. In another embodiment, the make-up gas source 90 is from an air compressor and a surge tank, the air compressor being in communication with the surge tank and the surge tank being in communication with the crankcase assembly 20.
The crankcase assembly 20 includes a head cover 21, and the intake manifold 10 communicates with a pre-separation line on the head cover 21. Effectively pre-separating water and gas generated in the crankcase ventilation system, and preventing the water from directly entering the gas-assisted oil-gas separator 30.
When the supercharging assembly 40 works under the large-load working condition, the air taking port behind the intercooler 42 provides air source pressure, the air source interface of the air-assisted oil-gas separator 30, namely the second air inlet 32 is positive pressure, the curved air and the air source air are firstly shunted to the first air outlet end through the air inlet end of the three-way valve 70 through the air outlet 33, then pass through the one-way valve 51 together from the first air outlet end and enter the front end of the supercharger 41, at the moment, the regulating valve 81 is closed, and the air source branch 80 connected with the air inlet manifold 10 has no blowby air circulation.
When the methanol engine works under the small-load working condition, the air source pressure behind the intercooler 42 is insufficient, at the moment, the vacuum degree auxiliary driving of the air inlet manifold 10 is utilized, the one-way valve 51 is closed in the reverse direction, the curved air is firstly shunted to the second air outlet end through the air inlet end of the three-way valve 70, then enters the air inlet manifold 10 from the second air outlet end through the air source branch 80, and finally enters the methanol engine cylinder to participate in combustion. The differential pressure flow of the path is physically regulated by a regulating valve 81, and can also be controlled by calibration by an electric control butterfly valve. The gas source gas is gas flowing into the gas-assisted type gas-oil separator 30 through the driving pipeline 60, and the curved gas is gas separated through the gas-assisted type gas-oil separator 30.
The existing methanol engine is commonly provided with an oil-driven oil-gas separator, on one hand, the methanol engine is provided with a rotor centrifugal mechanism and comprises an upper bearing and a lower bearing, blowby gas of a crank case of the methanol engine is provided with a large amount of water vapor and a small amount of unburned methanol vapor, so that faults such as rotor clamping stagnation and bearing failure can be caused, on the other hand, the oil-driven type methanol engine is driven by engine oil of a main oil duct, the separation efficiency is positively related to the rotating speed of the engine, and when the engine works under the conditions of low rotating speed and heavy load, the separation efficiency can be greatly reduced, and oil which is not separated completely also enters an air inlet pipeline to pollute a supercharger, an intercooler and a throttle valve, so that the engine is in fault and the service life is reduced. The application applies the gas-assisted oil-gas separator 30 to the methanol engine, and the rotating mechanism is omitted, so that the problems of rotor clamping stagnation, bearing failure and the like are avoided, the reliability of a crank system is greatly improved, the gas source provided by the driving pipeline 60 is used for driving and separating, the higher oil-gas separation efficiency and the crankcase pressure regulating function are simultaneously realized under the full working condition of the engine, and the reliability of the whole methanol engine is also improved.
The application also discloses a methanol engine, which comprises the crankcase ventilation system. Part of the air source of the methanol engine flows into the air-assisted oil-gas separator 30 through the driving pipeline 60, so that the cost is low and the reliability is good. Meanwhile, the air source is added into the air-assisted oil-gas separator 30, so that the separation efficiency of the air-assisted oil-gas separator 30 can be improved.
It should be noted that the technical solutions or technical features described in the above embodiments may be combined or supplemented with each other without generating a conflict. The scope of the present application is not limited to the exact construction described in the above embodiments and illustrated in the accompanying drawings, but modifications, equivalents, improvements, etc. that fall within the spirit and principle of the present application are intended to be included in the scope of the present application.
Claims (10)
1. A crankcase ventilation system is characterized by comprising an air inlet manifold, a crankcase assembly, an air-assisted oil-gas separator and a supercharging assembly, wherein the air inlet manifold, the crankcase assembly, the air-assisted oil-gas separator and the supercharging assembly are sequentially connected through a main pipeline to form a gas loop, a first air inlet, a second air inlet and an air outlet are formed in the air-assisted oil-gas separator, the first air inlet is connected with the crankcase assembly, the air outlet is connected with the supercharging assembly, and the second air inlet is connected to the main pipeline between the air inlet manifold and the supercharging assembly through a driving pipeline.
2. The crankcase ventilation system according to claim 1, wherein,
The air outlet is connected with the pressurizing assembly through a three-way valve, the three-way valve comprises an air inlet end, a first air outlet end and a second air outlet end, the air inlet end is connected with the air outlet, the first air outlet end is connected with the pressurizing assembly, and the second air outlet end is connected with the air inlet manifold through an air source branch.
3. The crankcase ventilation system according to claim 2, wherein,
The device further comprises a one-way valve arranged between the first air outlet end and the pressurizing assembly.
4. The crankcase ventilation system according to claim 2, wherein,
And a regulating valve arranged on the air source branch.
5. The crankcase ventilation system according to claim 4, wherein,
The regulating valve is a PCV valve or an electric control butterfly valve.
6. The crankcase ventilation system according to claim 2, wherein,
The supercharging assembly comprises a supercharger and an intercooler, one end of the supercharger is communicated with the first air outlet end, the other end of the supercharger is communicated with one end of the intercooler, the other end of the intercooler is communicated with the air inlet manifold, and a throttle valve is arranged on the main pipeline between the intercooler and the air inlet manifold.
7. The crankcase ventilation system according to claim 6, wherein,
The air filter is communicated to the main pipeline between the pressurizing assembly and the three-way valve.
8. The crankcase ventilation system according to claim 1, wherein,
The pipe diameter of the main pipeline is larger than that of the driving pipeline, wherein 1% -3% of the total output gas of the pressurizing assembly enters the gas-assisted oil-gas separator through the driving pipeline.
9. The crankcase ventilation system according to claim 1, wherein,
The crankcase assembly further comprises a gas supplementing source, wherein the gas supplementing source is connected with the crankcase assembly;
The crankcase assembly comprises a cylinder cover, and the air inlet manifold is communicated with a pre-separation pipeline arranged on the cylinder cover.
10. A methanol engine comprising a crankcase ventilation system according to any of the preceding claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411385829.8A CN119042007A (en) | 2024-09-30 | 2024-09-30 | Crankcase ventilation system and methanol engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411385829.8A CN119042007A (en) | 2024-09-30 | 2024-09-30 | Crankcase ventilation system and methanol engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119042007A true CN119042007A (en) | 2024-11-29 |
Family
ID=93583593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411385829.8A Pending CN119042007A (en) | 2024-09-30 | 2024-09-30 | Crankcase ventilation system and methanol engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119042007A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915231A (en) * | 2019-04-10 | 2019-06-21 | 广西玉柴机器股份有限公司 | Spark ignition type engine with supercharger closed crankcase ventilation system |
| US11598295B1 (en) * | 2021-12-27 | 2023-03-07 | Ford Global Technologies, Llc | Pump driven crankcase ventilation system |
| CN219974601U (en) * | 2023-07-07 | 2023-11-07 | 浙江吉利控股集团有限公司 | Crankcase ventilation system, engine and vehicle |
| CN118541533A (en) * | 2022-01-18 | 2024-08-23 | 康明斯公司 | Engine system and crankcase ventilation system |
-
2024
- 2024-09-30 CN CN202411385829.8A patent/CN119042007A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915231A (en) * | 2019-04-10 | 2019-06-21 | 广西玉柴机器股份有限公司 | Spark ignition type engine with supercharger closed crankcase ventilation system |
| US11598295B1 (en) * | 2021-12-27 | 2023-03-07 | Ford Global Technologies, Llc | Pump driven crankcase ventilation system |
| CN118541533A (en) * | 2022-01-18 | 2024-08-23 | 康明斯公司 | Engine system and crankcase ventilation system |
| CN219974601U (en) * | 2023-07-07 | 2023-11-07 | 浙江吉利控股集团有限公司 | Crankcase ventilation system, engine and vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108131178B (en) | Supercharged engine crankcase ventilation system structure | |
| CN211314317U (en) | Crankcase ventilation system for methanol engine and vehicle | |
| CN106065798B (en) | Crankcase ventilation pressure management system for turbocharged engine | |
| CN210977631U (en) | Supercharged engine crankcase ventilation system | |
| JP2018040252A (en) | Blow-by gas processing device for a supercharged internal combustion engine | |
| CN103397926A (en) | Respiratory system of pressurization gasoline engine | |
| JP2015113820A (en) | Internal combustion engine | |
| CN112901309A (en) | Active two-stroke engine crankcase ventilation system | |
| CN209942905U (en) | Engine crankcase ventilation system and have its vehicle | |
| CN105257367A (en) | Oil-gas separation system for supercharged engine | |
| CN107735550A (en) | The gas blowby reflux of internal combustion engine | |
| US10480366B2 (en) | Throttled PCV system for an engine | |
| CN104948262A (en) | Oil-gas separator | |
| CN109469531B (en) | Crankcase ventilation system oil and gas separator assembly and vehicle | |
| CN119042007A (en) | Crankcase ventilation system and methanol engine | |
| US9995192B2 (en) | Crankcase ventilation device for vehicle | |
| CN104033210B (en) | PCV system for two cylinder engines | |
| JP6544045B2 (en) | Ventilator for internal combustion engine with supercharger | |
| CN111636949B (en) | Closed crankcase ventilation system of heavy engine system and heavy engine system | |
| JP2005264918A (en) | Blow-by gas reflux device for engine with turbo supercharger | |
| CN211258754U (en) | Engine crankcase ventilation system | |
| CN106437942A (en) | Constant fresh air crankcase ventilation | |
| CN106285832B (en) | A crankcase pressure self-balancing system for aviation heavy oil piston engine | |
| JP2012237231A (en) | Blowby gas reflux device | |
| CN114060122A (en) | Engine crankcase forced ventilation system, engine and automobile |
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 |