CN209586465U - Respirator and diesel engine with crankcase pressure regulating device - Google Patents
Respirator and diesel engine with crankcase pressure regulating device Download PDFInfo
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- CN209586465U CN209586465U CN201920159663.6U CN201920159663U CN209586465U CN 209586465 U CN209586465 U CN 209586465U CN 201920159663 U CN201920159663 U CN 201920159663U CN 209586465 U CN209586465 U CN 209586465U
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- 238000001914 filtration Methods 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 238000005538 encapsulation Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 7
- 239000003344 environmental pollutant Substances 0.000 abstract description 5
- 231100000719 pollutant Toxicity 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 2
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- 239000003921 oil Substances 0.000 description 36
- 239000010721 machine oil Substances 0.000 description 9
- 238000009423 ventilation Methods 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
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- 238000009825 accumulation Methods 0.000 description 2
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- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
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- 238000005461 lubrication Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
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- 239000004071 soot Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
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- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
A kind of respirator and diesel engine with crankcase pressure regulating device, belongs to diesel engine technologies field.The respirator with crankcase pressure regulating device includes the gas mixing zone set gradually, Oil-gas Separation area and oil back region；Gas mixing zone is equipped with crankcase gas blowby tracheae and conducting element；Crankcase gas blowby tracheae is connected with pressure-regulating device, and pressure-regulating device is equipped with reduction formula runner at the position for protruding into crankcase gas blowby tracheae；Conducting element extends to Oil-gas Separation area direction is equipped with several guide vanes；Oil-gas Separation area is equipped with gs-oil separator and filtering gas vent, and guide vane protrudes into gs-oil separator in runner；Oil back region is equipped with oil return hole.The utility model realizes crankcase pressure automatic adjustment by reducing the runner design of formula on pressure-regulating device, guarantees the stability of diesel engine pollutant emission.
Description
Technical field
The utility model relates to a kind of technology of diesel engine realm, specifically a kind of band crankcase pressure is adjusted
The respirator and diesel engine of device.
Background technique
The burning waste gas and crankcase gas blowby that predominantly exhaust pipe is expelled directly out that discharge pollutants of diesel engine, with law
Regulation is increasingly stringent to the control of tailpipe emissions, and technological improvement focuses primarily upon the burning waste gas being expelled directly out to exhaust pipe
Control, and achieve significant effect；After controlling the burning waste gas that exhaust pipe is expelled directly out, particle in crankcase gas blowby
The specific gravity that object accounts for the total discharged particle of diesel engine increases with it, and to further decrease pollutant emission, then will be to crankcase
Gas blowby is controlled.
When crankcase gas blowby refers to internal combustion engine operation, in compression and combustion expansion process, by between piston group and cylinder
Gap combustion mixture and burnt gas in crankcase are leak into from combustion chamber.Gas blowby, which enters crankcase, can make crankcase temperature
It increases, increases the evaporation of oil sump machine oil, in addition crankcase inner part part, using lubrication of splashing, splashing greasing can generate
Mist of oil, this makes gas blowby in addition to the exhaust gas, the carbon black that generate containing remaining fuel oil and burning, and there are also many machine oil.Gas blowby is such as
Fruit cannot be discharged in time, and the fuel-steam condensation in gas blowby can make machine oil rotten, lead to insufficient lubrication, so as to cause part mill
Damage and engine oil consumption increase；If gas blowby cannot be discharged in time, engine gas leakage, oil leak can be caused when crankcase pressure is excessively high.Therefore,
Crank case of internal combustion engine needs ventilating system to handle gas blowby, the machine oil in gas blowby is separated, while maintaining crankcase pressure
In an appropriate range.
Crankcase ventilation system divides natural ventilation system and forced ventilation system, and crankcase natural ventilation system is also referred to as open type
Crankcase ventilation system, principle are that crankcase waste gas is exhausted directly in atmosphere；PCV system is by crankcase
Exhaust gas introduces the air inlet pipe of engine, and then burns in cylinder, it is possible to reduce pollutant emission improves engine economy
Property.
As shown in Figure 1, using forced ventilation system, if not being controlled, the machine oil steam meeting that contains in crankcase gas blowby
It condenses on the way and on the components such as the booster c, intercooler d, intake and exhaust valve that are adsorbed on gas handling system, to reduce theirs
Working performance and service life；In addition, the main component of machine oil is heavy high-molecular weight hydrocarbon and non-hydrocarbons mixture, combustion chamber is introduced
After be difficult to completely burned, it is easy to generate soot, form carbon distribution in cylinder b, reduce the working performance of engine a, increase simultaneously
Add the discharge of hazardous particulate matter, contaminated off-gas preprocessor reduces its performance and used life.Therefore, current forced ventilation
System needs crankcase breather to control the above process, and crankcase breather includes gs-oil separator e and pressure control
Valve f；Crankcase gas blowby introduces the entrance of respirator from cylinder head cover, and gas accesses inlet manifold after filtering via gs-oil separator e,
It is participated in again before being introduced into intercooler d in the combustion process of engine a.Gs-oil separator has forced ventilation system extremely heavy
The effect wanted, its separative efficiency directly affect the working performance of engine, emission performance and service life.And pressure controls
Valve is used to adjust crankcase pressure, and gs-oil separator is avoided to block and crankcase pressure is caused to rise；But work as pressure-control valve
When unlatching, the pollutant of engine emission can be obviously increased, and the discharge for even resulting in engine can not be up to standard.
Utility model content
The utility model In view of the above shortcomings of the prior art, proposes a kind of with crankcase pressure regulating device
Respirator and diesel engine.
The utility model is achieved through the following technical solutions:
The utility model relates to a kind of respirators with crankcase pressure regulating device, including the gas mixing set gradually
Area, Oil-gas Separation area and oil back region；
Gas mixing zone is equipped with crankcase gas blowby tracheae and conducting element；Crankcase gas blowby tracheae is connected with pressure and adjusts dress
It sets, pressure-regulating device is equipped with reduction formula runner at the position for protruding into crankcase gas blowby tracheae；Conducting element is to Oil-gas Separation area side
Several guide vanes are equipped with to extending；
Oil-gas Separation area is equipped with gs-oil separator and filtering gas vent, and guide vane protrudes into runner in gs-oil separator
It is interior；
Oil back region is equipped with oil return hole.
Pressure-regulating device is connected with momentum gas.
In some technical solutions, Oil-gas Separation area flow field end in gs-oil separator is equipped with drainage end cap, drains end
It covers in runner to conducting element direction protrusion；Preferably, protrusion is tapered, and further preferably protrusion is in cone.
Gas mixing zone includes respirator end cap, and crankcase gas blowby tracheae is fixed on respirator end cap；Oil-gas Separation area
Including respirator cabinet, gs-oil separator is fixed in respirator cabinet；Respirator end cap is fixedly connected simultaneously with respirator cabinet
Encapsulation process is preferably spirally connected by swivel nut.
Preferably, crankcase gas blowby tracheae can be rotated relative to respirator end cap.
In some technical solutions, the width of guide vane gradually reduces on conducting element extending direction.
Preferably, conducting element uses column structure；It is further preferred that guide vane is along week using annulus column structure
To being uniformly arranged.
Column structure is resisted against on gs-oil separator in being transversely provided with supports end cap, supports end cap, close with respirator cabinet
Sealing is fixed.
The utility model relates to a kind of diesel engines, including the above-mentioned respirator with crankcase pressure regulating device.
Technical effect
Compared with prior art, the utility model has the following technical effect that
1) increase pressure-regulating device on crankcase gas blowby tracheae, one flow velocity and pressure are introduced by pressure-regulating device
The higher momentum gas of power, when flowing through reduction formula runner, flow velocity further increases momentum gas；According to ideal gas behavior side
Journey: P1*V1=P2*V2, the pressure that the momentum gas of high flow rate causes surrounding at reduction formula runner sharply decline, and are formed opposite
Negative pressuren zone, and then drive the endotracheal gas of crankcase gas blowby flow rapidly into, reduce crankcase in average pressure, to realize
The adjusting of crankcase pressure and the discharge of engine stabilizer；It avoids using abnormal emission problem caused by pressure-control valve；
2) it by increasing conducting element, avoids and concentrates regional area on impact gs-oil separator containing foreign gas, improve
The efficiency of separation and filtering；
3) pass through and increase drainage end cap, part is reached into the i.e. intercepted drop in gs-oil separator filter core surface again
It is oriented to gs-oil separator, drop passes through gs-oil separator by osmosis and enters back into oil return hole, droplets pack is avoided, and
The mixed gas for reaching gs-oil separator bottom is oriented to gs-oil separator filter core, avoids gas in gs-oil separator bottom
Turbulent flow occurs, improves oil-gas separation efficiency.
Detailed description of the invention
Fig. 1 is a kind of system structure diagram of existing forced ventilation system；
Fig. 2 is the respiratory organ structure schematic diagram with crankcase pressure regulating device in embodiment 1；
Fig. 3 is conducting element structural schematic diagram in embodiment 1；
Fig. 4 is that end cover structure schematic diagram is drained in embodiment 1；
In figure:
Engine a, cylinder b, booster c, intercooler d, gs-oil separator e and pressure-control valve f；
Upper end cover 1, respirator end cap 2, respirator cabinet 3, conducting element 4, drainage end cap 5, pressure-regulating device 6, crankshaft
Case gas blowby tracheae 7, swivel nut 8, sealing element 9, sealing ring 10, filter core 11, oil return hole 12, sealing ring 13, filtering gas vent
14, side tracheae 15, respirator cabinet 16, supports end cap 41, guide vane 42.
Specific embodiment
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Embodiment 1
The present embodiment is related to a kind of diesel engine, is equipped with the breathing as shown in Figure 2 with crankcase pressure regulating device
Device, the respirator with crankcase pressure regulating device include the gas mixing zone set gradually, Oil-gas Separation area and oil back region.
Gas mixing zone includes respirator end cap 2, is closed at the top of respirator end cap 2 by upper end cover 1, upper end cover 1 designs
There are two hangers easy to disassemble, improve the convenience of follow-up maintenance replacement, 2 bottom of respirator end cap and Oil-gas Separation area seal
Fixed, 2 side wall of respirator end cap is preferably provided with side tracheae 15.
Side tracheae 15 is socketed with crankcase gas blowby tracheae 7 and is sealed by sealing ring 13；Crankcase gas blowby tracheae 7 and side gas
Pipe 15 is equipped with buckle, the notch being arranged in pairs, and buckle, notch are circumferentially uniformly arranged, therefore adjustable crankcase
The angle of assembling of gas blowby tracheae 7 and side tracheae 15 facilitates the pipeline of different diesel engines to arrange, realizes flexible installing；Crankshaft
Case gas blowby tracheae 7 is preferably provided with pressure-regulating device 6 by ultrasonic bonding, and pressure-regulating device 6 is altered protruding into crankcase
The position of gas tracheae 7 is equipped with reduction formula runner, pressure-regulating device 6 and crankcase gas blowby tracheae 7 as component design, a mark
Fixed, production, can greatly improve working efficiency；
Pressure-regulating device 6 is passed through momentum gas, and crankcase gas blowby tracheae 7 is passed through crankcase gas blowby；It is adjusted by pressure
The design for reducing formula runner on device 6 forms negative relative area at reduction formula runner, to drive the gas in crankcase quick
Outflow, by adjusting the pressure in momentum gas parameter adjusting crankcase；Momentum gas and crankcase gas blowby are in respirator end cap 2
In be mixed to form acceleration gaseous mixture, then flow to Oil-gas Separation area.
Conducting element 4 is equipped in respirator end cap 2；Conducting element 4 preferably uses circle ring column structure, such as Fig. 3 in the present embodiment
It is shown；Conducting element 4 in being transversely provided with supports end cap 41, supports end cap 41 on respirator cabinet 16 and by sealing ring 10 with
Respirator cabinet 16 seals；
Conducting element 4 extends to Oil-gas Separation area direction is equipped with several guide vanes 42, in the direction of extension guide vane 42
Tapering width, and the development length of each guide vane 41 can be different；The structure of traditional gs-oil separator designs, and is entering
When the disperse separating and filtering stage, crankcase gas blowby can be under air-flow and pressure export effect, and preferential selection is attached in pressure export
It is filtered at close filter core, causes unevenly to filter, and local location filter core surface is caused to contain a large amount of impurities, occurred
The excessive problem of gas surface current speed, influences the effect of Oil-gas Separation, and the design of conducting element 4 avoids the above problem, improves point
From the efficiency with filtering.
Oil-gas Separation area includes gs-oil separator, and gs-oil separator is equipped with filter core 11 and respirator cabinet 16, breathing
Device cabinet 16 is preferably spirally connected by swivel nut 8 with respirator end cap 2, more convenient compared to traditional screw connection disassembling maintenance, is exhaled
Haustorium cabinet 16 is equipped with filtering gas vent 14, and respirator cabinet 16 is gathered to form oil return in Oil-gas Separation area bottom crimp
Area, oil back region are equipped with oil return hole 12；
The gaseous mixture of momentum gas and crankcase gas blowby composition passes through filter core 11, most machine oil particle, cigarette carbon
Equal impurity are filtered out by filter core 11, and gas enters the air inlet system of engine via the filtering outflow of gas vent 14 after filtering
System, the machine oil drop that filter deposition gets off flow back to the oil sump of engine by return port 12, participate in the profit of engine again
In cunning.
In view of filter core 11 can intercept a part of machine oil drop coming gas side, in order to avoid the accumulation of drop, if
Drainage end cap 5 is counted, as shown in Figure 4；Filter core 11 is preferably fixed on drainage end cap 5, and drainage end cap 5 is fixed on respirator
On cabinet 16, drainage end cap 5 is in 11 Center wizard stream part of filter core, 4 direction protrusion in cone；When there is partial drop accumulation
When drop filter core 11 can be penetrated through under the driving of massif, equally flow back to oil sump via oil return hole 12；It drains simultaneously
The design of end cap 5 has gas drainage, avoids gas that turbulent flow occurs in 11 flows of filter core, will reach oil gas
The gas of Disengagement zone bottom is oriented to filter core.
It is emphasized that: the above is only the preferred embodiment of the present utility model, not appoints to the utility model
What formal limitation, any simple modification made by the above technical examples according to the technical essence of the present invention, etc.
With variation and modification, it is still within the scope of the technical solutions of the present invention.
Claims (10)
1. a kind of respirator with crankcase pressure regulating device, which is characterized in that including set gradually gas mixing zone, oil
Gas Disengagement zone and oil back region；
The gas mixing zone is equipped with crankcase gas blowby tracheae and conducting element；Crankcase gas blowby tracheae is connected with pressure and adjusts dress
It sets, pressure-regulating device is equipped with reduction formula runner at the position for protruding into crankcase gas blowby tracheae；Conducting element is to Oil-gas Separation area side
Several guide vanes are equipped with to extending；
The Oil-gas Separation area is equipped with gs-oil separator and filtering gas vent, and guide vane protrudes into runner in gs-oil separator
It is interior；
Oil back region is equipped with oil return hole.
2. the respirator according to claim 1 with crankcase pressure regulating device, characterized in that the pressure-regulating device
It is connected with momentum gas.
3. the respirator according to claim 1 with crankcase pressure regulating device, characterized in that the Oil-gas Separation area exists
Flow field end is equipped with drainage end cap in gs-oil separator, drains end cap in runner to conducting element direction protrusion.
4. the respirator according to claim 1 with crankcase pressure regulating device, characterized in that the gas mixing zone packet
Respirator end cap is included, crankcase gas blowby tracheae is fixed on respirator end cap；Oil-gas Separation area includes respirator cabinet, oil gas point
It is fixed in respirator cabinet from device；Respirator end cap is fixedly connected with respirator cabinet and encapsulation process.
5. the respirator according to claim 4 with crankcase pressure regulating device, characterized in that the respirator end cap and
Respirator cabinet is spirally connected by swivel nut.
6. the respirator according to claim 4 with crankcase pressure regulating device, characterized in that the crankcase gas blowby gas
Pipe is fixed on respirator end cap by buckle, the notch being arranged in pairs, and buckle, notch are circumferentially uniformly arranged.
7. the respirator according to claim 1 with crankcase pressure regulating device, characterized in that the width of the guide vane
Degree gradually reduces on conducting element extending direction.
8. the respirator according to claim 7 with crankcase pressure regulating device, characterized in that the conducting element is using circle
Central column structure, guide vane are evenly distributed setting.
9. the respirator according to claim 7 with crankcase pressure regulating device, characterized in that the conducting element uses column
Shape structure, the column structure is resisted against on gs-oil separator in being transversely provided with supports end cap, supports end cap, with respirator cabinet
Sealing is fixed.
10. a kind of diesel engine, which is characterized in that adjust dress including any one of the claim 1-9 band crankcase pressure
The respirator set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920159663.6U CN209586465U (en) | 2019-01-30 | 2019-01-30 | Respirator and diesel engine with crankcase pressure regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920159663.6U CN209586465U (en) | 2019-01-30 | 2019-01-30 | Respirator and diesel engine with crankcase pressure regulating device |
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| Publication Number | Publication Date |
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| CN209586465U true CN209586465U (en) | 2019-11-05 |
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| CN201920159663.6U Active CN209586465U (en) | 2019-01-30 | 2019-01-30 | Respirator and diesel engine with crankcase pressure regulating device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111502800A (en) * | 2019-01-30 | 2020-08-07 | 苏州达菲特过滤技术股份有限公司 | Breather with crankcase pressure adjusting device and diesel engine |
| CN113606013A (en) * | 2021-08-20 | 2021-11-05 | 广西玉柴机器股份有限公司 | Oil-gas separation system of engine |
| US20240352879A1 (en) * | 2021-09-13 | 2024-10-24 | Cummins Filtration Inc. | Compressed gas assisted inertial impactor with elastomeric nozzles |
-
2019
- 2019-01-30 CN CN201920159663.6U patent/CN209586465U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111502800A (en) * | 2019-01-30 | 2020-08-07 | 苏州达菲特过滤技术股份有限公司 | Breather with crankcase pressure adjusting device and diesel engine |
| CN113606013A (en) * | 2021-08-20 | 2021-11-05 | 广西玉柴机器股份有限公司 | Oil-gas separation system of engine |
| US20240352879A1 (en) * | 2021-09-13 | 2024-10-24 | Cummins Filtration Inc. | Compressed gas assisted inertial impactor with elastomeric nozzles |
| US12338755B2 (en) * | 2021-09-13 | 2025-06-24 | Cummins Filtration Inc. | Compressed gas assisted inertial impactor with elastomeric nozzles |
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