CN211737247U - Crankcase ventilation device - Google Patents
Crankcase ventilation device Download PDFInfo
- Publication number
- CN211737247U CN211737247U CN202020395862.XU CN202020395862U CN211737247U CN 211737247 U CN211737247 U CN 211737247U CN 202020395862 U CN202020395862 U CN 202020395862U CN 211737247 U CN211737247 U CN 211737247U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- exhaust passage
- passage
- waste gas
- cylinder body
- 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.)
- Active
Links
Images
Abstract
The utility model discloses a crankcase ventilation unit, include: cylinder block, the cylinder head, shroud and oil pan, the waste gas that the cylinder block gas leakage mouth spills enters into cylinder block exhaust passage, cylinder block exhaust passage's air inlet sets up the bottom at the cylinder block, waste gas in the in-process that rises in cylinder block exhaust passage, can strike first ventilation baffle, because the quality of machine oil and gas is different, make partial machine oil separate from waste gas, machine oil falls into the oil pan in cylinder block exhaust passage under the effect of gravity, waste gas continues to rise, loop through cylinder head exhaust passage and outlet duct and discharge, wherein waste gas is at exhaust in-process, oil-gas separation has been carried out to waste gas, the machine oil content in the waste gas has been reduced, consequently, can reach saving machine oil, reduce environmental pollution's purpose.
Description
Technical Field
The utility model relates to the technical field of engines, in particular to crankcase ventilation unit.
Background
The theoretical detonation pressure of the current heavy engine is designed to be higher and higher in order to improve the power and the torque. The inside burning of engine goes on in the cylinder, seals through the piston ring, but the piston ring can't be sealed gaseous totally, and a small amount of waste gas can lead to crankcase pressure to rise in can entering into the crankcase to make the sealing member inefficacy, these waste gases have great kinetic energy simultaneously, can carry the machine oil that the inside moving part of engine thrown away, not only cause the high problem of machine oil loss, still polluted environment.
Therefore, how to provide a crankcase ventilation device to reduce the oil content in the exhaust gas is a technical problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a crankcase ventilation unit can effectively reduce the machine oil content in the waste gas.
In order to achieve the above object, the utility model provides a following technical scheme:
a crankcase ventilation device comprising:
the engine oil separator comprises a cylinder body, an oil inlet, a first ventilation baffle plate and a second ventilation baffle plate, wherein the cylinder body is internally provided with the oil outlet, the side wall of the cylinder body is provided with a cylinder body exhaust passage communicated with the oil inlet, the cylinder body exhaust passage is internally provided with the first ventilation baffle plate, and the first ventilation baffle plate is used for narrowing the aperture of the cylinder body exhaust passage so as to separate engine oil in waste gas;
the cylinder cover is connected with the upper part of the cylinder body, and a cylinder cover exhaust passage communicated with the cylinder body exhaust passage is arranged on the cylinder cover;
the cover cap covers the cylinder cover, and an air outlet pipe communicated with the outside is arranged on the cover cap;
and an oil pan connected to the bottom of the cylinder block for collecting the oil dropped from the cylinder block exhaust passage.
Preferably, a lateral balance channel is further arranged on the side wall of the cylinder block, a lateral balance expansion channel is arranged at the junction of the cylinders on the lateral balance channel, and the lateral balance channel is communicated with the cylinder block exhaust channel.
Preferably, the upper section of the cylinder body exhaust passage is a cylinder body expansion passage, and the cylinder body expansion passage is located above the junction of the transverse balance passage and the cylinder body exhaust passage.
Preferably, the communication part of the cylinder exhaust passage and the cylinder cover exhaust passage is a ventilation narrowing passage.
Preferably, a second vent baffle is arranged at an outlet of the cylinder expansion channel.
Preferably, the outlet pipe is horizontally arranged on the side wall of the cover.
Preferably, the inlet of the cylinder cover exhaust passage is a stepped inlet with a reduced hole from bottom to top.
Preferably, the air outlet of the cylinder cover exhaust passage is flared.
Compared with the prior art, the technical scheme has the following advantages:
the utility model provides a crankcase ventilation unit, include: cylinder block, the cylinder head, shroud and oil pan, at specific during operation, the waste gas that the cylinder block gas leak port spills enters into cylinder block exhaust passage, cylinder block exhaust passage's air inlet sets up the bottom at the cylinder block, waste gas in the in-process that rises in cylinder block exhaust passage, can strike first ventilation baffle, because the quality of machine oil and gas is different, make partial machine oil separate out from waste gas, machine oil falls into the oil pan in cylinder block exhaust passage under the effect of gravity, waste gas continues to rise, loop through cylinder head exhaust passage and outlet duct and discharges, wherein waste gas is at exhaust in-process, oil-gas separation has been carried out to waste gas, the machine oil content in the waste gas has been reduced, consequently, can reach saving machine oil, reduce environmental pollution's purpose.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a transverse cross-sectional view of a crankcase ventilation device according to an embodiment of the present invention;
fig. 2 is a longitudinal sectional view of a crankcase ventilation device according to an embodiment of the present invention;
fig. 3 is a horizontal cross-sectional view of a crankcase ventilation device according to an embodiment of the present invention;
fig. 4 is a schematic perspective view of a cylinder block of a crankcase ventilation device according to an embodiment of the present invention;
fig. 5 is a perspective view of a sand core of a crankcase ventilation device according to an embodiment of the present invention.
The reference numbers are as follows:
1 is a cover cap, and 1-1 is an air outlet pipe;
2 is a cylinder cover, 2-1 is a cylinder cover exhaust channel, 2-2 is a stepped inlet, and 2-3 is a flaring;
3 is a cylinder body, 3-1 is a cylinder body expansion channel, 3-2 is a transverse balance channel, 3-3 is an air leakage port, 3-4 is a first ventilation baffle, 3-5 is a cylinder body exhaust channel, 3-6 is an air inlet, 3-7 is a second ventilation baffle, and 3-8 is a transverse expansion balance channel;
and 4, an oil pan.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 4, fig. 1 is a transverse cross-sectional view of a crankcase ventilation device according to an embodiment of the present invention; fig. 2 is a longitudinal sectional view of a crankcase ventilation device according to an embodiment of the present invention; fig. 3 is a horizontal cross-sectional view of a crankcase ventilation device according to an embodiment of the present invention; fig. 4 is a schematic perspective view of a cylinder block of a crankcase ventilation device according to an embodiment of the present invention.
The embodiment of the utility model provides a crankcase ventilation unit who provides, include: the engine oil separator comprises a cylinder body 3, a cylinder cover 2, a cover 1 and an oil pan 4, wherein an air leakage port 3-3 is formed in the cylinder body 3, a cylinder body exhaust passage 3-5 communicated with the air leakage port 3-3 is formed in the side wall of the cylinder body 3, a first ventilation baffle plate 3-4 is arranged in the cylinder body exhaust passage 3-5, and the first ventilation baffle plate 3-4 is used for narrowing the aperture of the cylinder body exhaust passage 3-5 so as to separate engine oil in waste gas; the cylinder cover 2 is connected to the upper part of the cylinder body 3, and a cylinder cover exhaust passage 2-1 communicated with a cylinder body exhaust passage 3-5 is arranged on the cylinder cover 2; the cover cap 1 is covered on the cylinder cover 2, the cover cap 1 is provided with an air outlet pipe 1-1 communicated with the outside, and the air outlet pipe 1-1 is preferably horizontally arranged on the side wall of the cover cap 1; an oil pan 4 is attached to the bottom of the cylinder block 3. During specific work, waste gas leaked from the gas leakage port 3-3 of the cylinder body 3 enters the cylinder body exhaust passage 3-5, the gas inlet 3-6 of the cylinder body exhaust passage 3-5 is arranged at the bottom of the cylinder body 3, the waste gas can collide with the first ventilation baffle 3-4 in the process of rising in the cylinder body exhaust passage 3-5, part of the engine oil is separated from the waste gas due to different qualities of the engine oil and the gas, the engine oil falls into the oil pan 4 from the cylinder body exhaust passage 3-5 under the action of gravity, the waste gas continuously rises and is discharged through the cylinder cover exhaust passage 2-1 and the gas outlet pipe 1-1 in sequence, and in the process of discharging the waste gas, the waste gas is subjected to oil-gas separation, so that the engine oil content in the waste gas is reduced, and the purposes of saving the engine oil and reducing the environmental pollution are.
Furthermore, a transverse balance channel 3-2 is further arranged on the side wall of the cylinder body 3, a transverse balance expansion channel is arranged at the junction of the cylinders on the transverse balance channel 3-2, and the transverse balance channel 3-2 is communicated with a cylinder body exhaust channel 3-5. During manufacturing, the sand cores can be used for forming the transverse balance channels 3-2 among the cylinders, and the air pressure fluctuation formed by the movement of the pistons of the cylinders can be balanced by the blowby waste gas through the transverse balance channels 3-2. Meanwhile, the sectional area of the transverse balance expansion channel is larger than that of the transverse balance channel 3-2, and the compressed high-speed waste gas can be subjected to pressure reduction and speed reduction, so that large-particle engine oil in the waste gas is separated out, the engine oil can fall into the oil pan 4 from the bottom air inlet 3-6 of the cylinder body exhaust channel 3-5, the situation that the high-pressure high-speed waste gas impacts the engine oil in the oil pan 4 downwards can be avoided, and more engine oil is mixed into the waste gas.
Furthermore, the upper section of the cylinder exhaust channel 3-5 is a cylinder expansion channel 3-1, and the cylinder expansion channel 3-1 is positioned above the junction of the transverse balance channel 3-2 and the cylinder exhaust channel 3-5. When the waste gas enters the cylinder body expansion channel 3-1 at the upper section of the cylinder body exhaust channel 3-5, the sectional area of the cylinder body expansion channel 3-1 is relatively large, so that the compressed high-speed waste gas can be subjected to pressure reduction and speed reduction, and the engine oil in the waste gas is further separated.
Specifically, the communication part of the cylinder exhaust passage 3-5 and the cylinder head exhaust passage 2-1 is a ventilation narrowing passage, namely the cylinder exhaust passage 3-5 is narrowed again after being expanded, so as to continuously perform oil-gas separation on the exhaust gas.
Furthermore, a second vent baffle 3-7 is arranged at an outlet of the cylinder body expansion channel 3-1, when the waste gas reaches the second vent baffle 3-7, part of the engine oil is separated from the waste gas, wherein the first vent baffle 3-4 and the second vent baffle 3-7 are integrally formed in the cylinder body exhaust channel 3-5.
Specifically, the inlet of the cylinder cover exhaust passage 2-1 is a stepped inlet 2-2 with a reduced aperture from bottom to top, and the outlet of the cylinder cover exhaust passage 2-1 is a flared opening 2-3. Wherein the step face of notch cuttype structure can play the effect of ventilation baffle, the effect of oil-gas separation promptly. When waste gas rises to an inlet of a cylinder cover exhaust passage 2-1, due to the existence of a step-shaped structure, the flow velocity of the gas flow is accelerated, then the waste gas enters a flaring 2-3 type gas outlet of the cylinder cover exhaust passage 2-1, at the moment, the sectional area is enlarged, and the flow velocity of the gas is slowed down, so that the waste gas repeatedly accelerates and decelerates when passing through the cylinder cover exhaust passage 2-1, part of engine oil is separated from the waste gas due to different masses of the engine oil and the gas, the separated engine oil finally flows into an oil pan 4 from a gas inlet 3-6 at the bottom of a cylinder body 3 under the action of gravity, the waste gas continuously ascends to enter a cover cap 1, and finally is discharged from a gas outlet.
Referring to fig. 5, fig. 5 is a perspective view of a sand core of a crankcase ventilation device according to an embodiment of the present invention. The cylinder body ventilation channel, the ventilation narrowing channel, the transverse balance channel 3-2, the transverse expansion balance channel 3-8, the air leakage port 3-3, the air inlet 3-6 at the bottom of the cylinder body 3, the first ventilation baffle 3-4, the second ventilation baffle 3-7 and the cylinder body expansion channel 3-1 in the embodiment are preferably manufactured by an integrated sand core, so that the strength and the stability of the sand core are facilitated, and the number of the sand cores is reduced.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It is right above the utility model provides a crankcase ventilation unit introduces in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (8)
1. A crankcase ventilation device, comprising:
the engine oil separator comprises a cylinder body, an oil inlet, a first ventilation baffle plate and a second ventilation baffle plate, wherein the cylinder body is internally provided with the oil outlet, the side wall of the cylinder body is provided with a cylinder body exhaust passage communicated with the oil inlet, the cylinder body exhaust passage is internally provided with the first ventilation baffle plate, and the first ventilation baffle plate is used for narrowing the aperture of the cylinder body exhaust passage so as to separate engine oil in waste gas;
the cylinder cover is connected with the upper part of the cylinder body, and a cylinder cover exhaust passage communicated with the cylinder body exhaust passage is arranged on the cylinder cover;
the cover cap covers the cylinder cover, and an air outlet pipe communicated with the outside is arranged on the cover cap;
and an oil pan connected to the bottom of the cylinder block for collecting the oil dropped from the cylinder block exhaust passage.
2. The crankcase ventilation device according to claim 1, wherein a lateral balancing passage is further provided in the side wall of the cylinder block, and a lateral balancing expansion passage is provided at each cylinder junction in the lateral balancing passage, and the lateral balancing passage communicates with the cylinder block exhaust passage.
3. The crankcase ventilation device of claim 2, wherein the upper section of the cylinder exhaust passage is a cylinder expansion passage located above a junction of the lateral balancing passage and the cylinder exhaust passage.
4. The crankcase ventilation device according to claim 3, wherein the communication between the block exhaust passage and the head exhaust passage is a ventilation narrowing passage.
5. The crankcase ventilation device according to claim 4, wherein a second vent baffle is provided at an outlet of the cylinder expansion passage.
6. The crankcase ventilation device of claim 1, wherein the outlet tube is disposed horizontally on a side wall of the cover.
7. The crankcase ventilation device according to any one of claims 1 to 6, wherein the inlet of the head discharge passage is a stepped inlet that is reduced in size from bottom to top.
8. The crankcase ventilation device of claim 7, wherein the air outlet of the head exhaust passage is flared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020395862.XU CN211737247U (en) | 2020-03-25 | 2020-03-25 | Crankcase ventilation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020395862.XU CN211737247U (en) | 2020-03-25 | 2020-03-25 | Crankcase ventilation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211737247U true CN211737247U (en) | 2020-10-23 |
Family
ID=72853526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020395862.XU Active CN211737247U (en) | 2020-03-25 | 2020-03-25 | Crankcase ventilation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211737247U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237029A (en) * | 2020-03-25 | 2020-06-05 | 安徽华菱汽车有限公司 | Crankcase ventilation device |
-
2020
- 2020-03-25 CN CN202020395862.XU patent/CN211737247U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237029A (en) * | 2020-03-25 | 2020-06-05 | 安徽华菱汽车有限公司 | Crankcase ventilation device |
| CN111237029B (en) * | 2020-03-25 | 2024-05-03 | 安徽华菱汽车有限公司 | Crankcase ventilation device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5487371A (en) | Air-oil separator utilizing centrifugal separation | |
| CN202023610U (en) | Centrifugal oil-gas separator of heavy-duty diesel engine | |
| CN203626924U (en) | Oil-gas separator | |
| CN205025530U (en) | Oil -gas separator of supercharged engine | |
| CN211737247U (en) | Crankcase ventilation device | |
| CN104879192A (en) | Oil-gas separator of crankcase | |
| CN201650410U (en) | Valve chamber cover oil-gas separating structure | |
| CN201953442U (en) | Oil-gas separation structure of engine cylinder cover | |
| CN201738984U (en) | Oil-gas separator of engine | |
| CN111237029B (en) | Crankcase ventilation device | |
| KR20090065384A (en) | Apparatus for separating oil in blow-by gas of a cylinder head cover | |
| CN201687550U (en) | Oil-gas separation structure of engine | |
| WO2020052660A1 (en) | Filter plate-type engine oil-gas separation device | |
| CN111535901A (en) | Oil return structure for oil-gas separation of diesel engine | |
| CN206290308U (en) | Composite oil-gas separator | |
| CN209875255U (en) | Oil-gas separation structure for engine | |
| CN214887295U (en) | Oil-gas separator | |
| CN202811009U (en) | Oil-gas separator of supercharged engine | |
| CN206917696U (en) | A kind of cellular oil-gas separation mechanism | |
| CN201843664U (en) | Gas-oil separation device of automobile engine | |
| CN209671041U (en) | A kind of filter plate gas drive formula voltage adaptive controlling oil-gas separating device of engine | |
| CN109026280B (en) | Adjustable two-stage oil-gas separation closed circulation system of diesel engine crankcase | |
| CN203717075U (en) | Crankcase ventilation system, engine and automobile | |
| CN205981671U (en) | Test device is markd to bearing collar next part oil efficiency | |
| CN206274008U (en) | A kind of new crank case of internal combustion engine scavenging structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |