CN214273764U - Forced ventilation pipe of crankcase, engine and car - Google Patents
Forced ventilation pipe of crankcase, engine and car Download PDFInfo
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- CN214273764U CN214273764U CN202120365632.3U CN202120365632U CN214273764U CN 214273764 U CN214273764 U CN 214273764U CN 202120365632 U CN202120365632 U CN 202120365632U CN 214273764 U CN214273764 U CN 214273764U
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- engine
- pressure stabilizing
- ventilation
- crankcase
- positive crankcase
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Abstract
The utility model provides a crankcase forced ventilation pipe, engine and car relates to car technical field, crankcase forced ventilation pipe includes: a ventilation pipeline and a pressure stabilizing cavity; wherein, the ventilation pipeline includes: a pipeline body; the two ends of the pipeline body are respectively provided with a first connecting joint; the voltage stabilization cavity comprises: a pressure-stabilizing chamber; the second connecting joint is respectively communicated with two ends of the pressure stabilizing cavity; the outer wall of the pressure stabilizing chamber is provided with a mounting structure; one of the first connection terminals is connected to one of the second connection terminals. The utility model discloses a scheme has the advantage that the function is reliable, exempt from the maintenance and with the same life-span of engine.
Description
Technical Field
The utility model relates to the field of automotive technology, in particular to crankcase forced draft pipe, engine and car.
Background
A Positive Crankcase Ventilation (PCV) pipe is a sub-component in the PCV system, and is used to form a connecting passage, so that clean gas separated by the oil-gas separator is reintroduced into an engine intake system, then enters an intake manifold, and finally enters a combustion chamber to be burned.
The existing crankcase forced ventilation pipe is generally designed by adopting a detachable joint and has no diagnosis function, and has the problems of complex design scheme, poor reliability and higher part cost, and can not be directly used.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a crankcase forced draft pipe, engine and car for solve the poor problem of crankcase forced draft pipe reliability.
In order to solve the technical problem, an embodiment of the utility model provides a following technical scheme:
a crankcase forced draft duct comprising:
a ventilation pipeline and a pressure stabilizing cavity;
wherein, the ventilation pipeline includes: a pipeline body; the two ends of the pipeline body are respectively provided with a first connecting joint;
the voltage stabilization cavity comprises: a pressure-stabilizing chamber; the second connecting joint is respectively communicated with two ends of the pressure stabilizing cavity; the outer wall of the pressure stabilizing chamber is provided with a mounting structure;
one of the first connection terminals is connected to one of the second connection terminals.
Optionally, the surface of the pipeline body is covered with an insulating layer.
Optionally, the heat insulation layer is made of a foaming material.
Optionally, the surface of the heat insulation layer is wrapped with a protective pipe.
Optionally, the protective tube is an aluminum foil tube.
Optionally, the first connection joint is connected with two ends of the pipeline body in a non-detachable mode.
Optionally, the pressure stabilizing cavity is manufactured by an integral molding process.
Optionally, the surface of the mounting structure is provided with a mounting hole.
The embodiment of the utility model also provides an engine, including air intake manifold, still include as above any one the crankcase forced draft tube;
the other second connector communicates with the intake manifold.
The embodiment of the utility model provides a still provide an automobile, include as above the engine.
The utility model has the advantages that:
in the above aspect, the crankcase ventilation duct includes: a ventilation pipeline and a pressure stabilizing cavity; wherein, the ventilation pipeline includes: a pipeline body; the two ends of the pipeline body are respectively provided with a first connecting joint; the voltage stabilization cavity comprises: a pressure-stabilizing chamber; the second connecting joint is respectively communicated with two ends of the pressure stabilizing cavity; the outer wall of the pressure stabilizing chamber is provided with a mounting structure; one of them first connector is connected with one of them second connector, realizes the intercommunication of ventilation pipe and steady voltage cavity. The scheme of the utility model is passed through the steady voltage cavity reduces the air current pulsation among the crankcase forced ventilation system, improves oil-gas separation efficiency, has the function reliable, exempt from the maintenance and with the engine life-span's advantage.
Drawings
FIG. 1 shows a schematic structural view of a positive crankcase ventilation duct according to an embodiment of the present invention;
FIG. 2 shows a schematic view of a ventilation line in a positive crankcase ventilation stack according to an embodiment of the invention;
FIG. 3 shows a schematic view of a guard tube in a positive crankcase ventilation stack according to an embodiment of the invention;
fig. 4 shows a schematic diagram of a pressure stabilizing cavity in a positive crankcase ventilation duct according to an embodiment of the present invention.
Description of reference numerals:
1-a ventilation pipeline; 11-a pipeline body; 12-a first connector; 13-a heat-insulating layer; 14-a protective tube; 2-a pressure stabilizing cavity; 21-a surge chamber; 22-a second connector; 23-a mounting structure; 231-mounting holes.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses to the poor problem of crankcase forced draft pipe reliability among the prior art, provide a crankcase forced draft pipe, engine and car.
As shown in fig. 1 to 4, an embodiment of the present invention provides a forced ventilation pipe for a crankcase, including:
a ventilation pipeline 1 and a pressure stabilizing cavity 2;
wherein the ventilation pipe 1 includes: a pipe body 11; the two ends of the pipeline body 11 are respectively provided with a first connecting joint 12;
the pressure stabilizing cavity 2 includes: a surge chamber 21; second connection joints 22 respectively communicating with both ends of the surge chamber 21; the outer wall of the pressure stabilizing cavity 21 is provided with a mounting structure 23;
one of the first connection terminals 12 is connected to one of the second connection terminals 22.
The utility model discloses a crankcase forced ventilation pipe include ventilation pipeline 1 and with the steady voltage cavity 2 of ventilation pipeline 1 intercommunication has that the design is simple, low cost, function are reliable, exempt from the maintenance and with the same life-span's of engine advantage. When the engine operates, clean gas separated by the oil-gas separator enters the air inlet manifold through the ventilation pipeline 1 and the pressure stabilizing cavity 2, and finally participates in combustion together with air inlet of an air inlet system of the engine. The pressure stabilizing cavity 2 can reduce airflow pulsation in a positive ventilation system of the crankcase, improve oil-gas separation efficiency, stabilize pressure of the crankcase, maintain the pressure of the crankcase at a certain negative pressure value, and effectively avoid oil leakage at the sealing surface of the engine.
The crankcase forced ventilation pipe has reliable function, meets the requirement of light automobile on pollutant emission, and effectively solves the problem of abnormal engine oil consumption caused by airflow pulsation under the working condition of high speed and large load of an engine.
Optionally, the surface of the pipeline body 11 is covered with an insulating layer 13.
It should be noted that the insulating layer 13 can avoid the risk of icing on the surface of the pipeline body 11, and is suitable for being used in cold regions.
Optionally, the insulating layer 13 is made of a foam material.
The insulating layer 13 is made of a material having a low thermal conductivity, and is generally made of a foamed material, such as EPDM (ethylene propylene diene monomer) and PUR (polyurethane) materials. Furthermore, it is also desirable to select the material of the insulating layer 13 in combination with the insulating properties of the material and the ambient temperature of use.
Optionally, the surface of the insulating layer 13 is wrapped with a protective pipe 14.
Here, the protective tube 14 has a wind-proof and protective function, and prevents the insulating layer 13 from being worn.
Optionally, the protective tube 14 is an aluminum foil tube.
It should be noted that the protection tube 14 may be an aluminum foil tube, and may also be a tube made of other materials, which are not limited or compared herein.
Optionally, the first connecting joint 12 is connected with both ends of the pipeline body 11 in a non-detachable manner.
Here, the first connection joint 12 and the pipeline body 11 are connected by a special tool in an interference fit manner at normal temperature, so that the safety and reliability of the crankcase forced ventilation pipe in use are ensured, and the connection manner has the advantages of maintenance-free property and service life as long as that of an engine.
It should be noted that the design and shape of the first connecting joint 12 can be adjusted and optimized according to the arrangement requirement of the positive crankcase ventilation pipe on the actual engine, and is not limited herein.
Optionally, the pressure stabilizing cavity 2 is manufactured by an integral molding process.
Here, the pressure stabilizing cavity 2 can be manufactured by adopting an injection molding process, and has the advantages of simple structure, low cost and reliable function.
It should be noted that, in practical applications, the volume of the surge chamber 21 and the inner diameter of the duct body 11 both affect the pulsation of the air flow in the positive crankcase ventilation system, and the optimal matching design between the two needs to be determined through engine bench tests.
Optionally, the surface of the mounting structure 23 is provided with a mounting hole 231.
Here, the mounting hole 231 is to satisfy a fixed connection between the pressure stabilizing chamber 2 and other structures, thereby ensuring the stability of the assembly of the pressure stabilizing chamber 2 and the ventilation pipe 1 and preventing the pressure stabilizing chamber 2 and the ventilation pipe 1 from vibrating during use.
The embodiment of the utility model also provides an engine, including air intake manifold, still include as above any one the crankcase forced draft tube;
the other second connector 22 communicates with the intake manifold.
The utility model discloses an engine adopts as above crankcase forced ventilation pipe, its theory of operation is: after the oil-gas mixture in the crankcase is separated by the oil-gas separator, clean gas enters one of the first connecting joints 12 on the ventilation pipeline 1, then the clean gas flows into the pressure stabilizing chamber 21 from one of the second connecting joints 22 on the pressure stabilizing cavity 2 through the pipeline body 11 and the other first connecting joint 12, the clean gas flows out of the other second connecting joint 22 after being subjected to pressure adjustment through the pressure stabilizing chamber 21 and is guided into an intake manifold, and the clean gas finally participates in combustion together with intake air of an engine intake system.
The airflow pulsation of the clean gas after pressure adjustment is reduced, so that a stable negative pressure value of a crankcase is kept, the oil-gas separation efficiency is improved, and the abnormal oil consumption caused by the airflow pulsation under the high-speed and high-load working condition of the engine is improved.
It should be further noted that the mounting hole 231 on the pressure stabilizing cavity 2 may be fixedly connected to the mounting bracket on the intake manifold through a bolt, so as to maintain the stability of the assembly of the pressure stabilizing cavity 2 and the ventilation pipeline 1 and avoid the occurrence of vibration during the use.
The embodiment of the utility model provides a still provide an automobile, include as above the engine.
The utility model discloses an automobile has as above technical effect, no longer gives unnecessary details here.
The foregoing is directed to the preferred embodiments of the present invention, and it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the invention, and that such changes and modifications are intended to be included within the scope of the invention.
Claims (10)
1. A crankcase forced draft duct, comprising:
a ventilation pipeline (1) and a pressure stabilizing cavity (2);
wherein the ventilation line (1) comprises: a pipe body (11); the two ends of the pipeline body (11) are respectively provided with a first connecting joint (12);
the pressure stabilizing cavity (2) comprises: a surge chamber (21); the second connecting joints (22) are respectively communicated with two ends of the pressure stabilizing chamber (21); the outer wall of the pressure stabilizing cavity (21) is provided with a mounting structure (23);
one of the first connection terminals (12) is connected to one of the second connection terminals (22).
2. The positive crankcase ventilation manifold according to claim 1, wherein the surface of the manifold body (11) is covered with an insulating layer (13).
3. The positive crankcase ventilation manifold according to claim 2, wherein the insulating layer (13) is made of a foamed material.
4. The positive crankcase ventilation duct according to claim 2, wherein the surface of the insulating layer (13) is wrapped with a protective tube (14).
5. The positive crankcase ventilation manifold according to claim 4, wherein the guard pipe (14) is an aluminum foil pipe.
6. The positive crankcase ventilation manifold according to claim 1, wherein the first connection joint (12) is non-detachably connected to both ends of the manifold body (11).
7. The positive crankcase ventilation duct according to claim 1, characterized in that the surge chamber (2) is made in an integral molding process.
8. The positive crankcase ventilation duct according to claim 1, characterized in that a surface of the mounting structure (23) is provided with a mounting hole (231).
9. An engine comprising an intake manifold, characterized by further comprising a positive crankcase ventilation manifold according to any one of claims 1 to 8;
another second connector fitting (22) communicates with the intake manifold.
10. A vehicle comprising the engine of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120365632.3U CN214273764U (en) | 2021-02-09 | 2021-02-09 | Forced ventilation pipe of crankcase, engine and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120365632.3U CN214273764U (en) | 2021-02-09 | 2021-02-09 | Forced ventilation pipe of crankcase, engine and car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214273764U true CN214273764U (en) | 2021-09-24 |
Family
ID=77790220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120365632.3U Active CN214273764U (en) | 2021-02-09 | 2021-02-09 | Forced ventilation pipe of crankcase, engine and car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214273764U (en) |
-
2021
- 2021-02-09 CN CN202120365632.3U patent/CN214273764U/en active Active
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