CN208364268U - The gas handling system of four cylinder engine - Google Patents
The gas handling system of four cylinder engine Download PDFInfo
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- CN208364268U CN208364268U CN201821045998.7U CN201821045998U CN208364268U CN 208364268 U CN208364268 U CN 208364268U CN 201821045998 U CN201821045998 U CN 201821045998U CN 208364268 U CN208364268 U CN 208364268U
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Abstract
The utility model discloses a kind of gas handling systems of four cylinder engine.The gas handling system of the four cylinder engine includes: cylinder head air intake duct, is four, is right hand helix air intake duct；Air inlet pipe, using hierarchical design, it include: lower layer's air inlet pipe and upper layer air inlet pipe, lower layer's air inlet pipe it is closed at one end, its side is opened up respectively there are four air inlet pipeline joint, respectively with the inlet communication of four cylinder head air intake ducts, one end of the upper layer air inlet pipe is connected to the other end of lower layer's air inlet pipe；The other end of the upper layer air inlet pipe is intake interface；Air inlet tube, one end are connected to the intake interface of the air inlet pipe, and the side of the air inlet tube offers EGR interface；And EGR branch.The air inlet pipe of the gas handling system of the four cylinder engine uses hierarchical design, and EGR exhaust enters from air inlet pipe, so that the mixed path of EGR exhaust and fresh air is elongated, mixed effect is more abundant.
Description
Technical field
The utility model is about engine art, especially with regard to a kind of gas handling system of four cylinder engine.
Background technique
In order to make diesel engine have lower emission effect, reach stringent emission regulation demands, diesel engine body often needs
Increase EGR (exhaust gas recycling) system.After increasing egr system, exhaust gas has to adequately be mixed with ozone,
It can be only achieved preferable reduction emission effect.
Existing technical solution has the disadvantage that
1, four cylinder engine, structure is too compact, and air inlet pipeline length is short, it is more difficult to reach more satisfactory EGR exhaust, fresh
The mixed effect of air inlet.
2, the both ends of air inlet pipe are arranged in the air inlet of the air inlet pipe of four cylinder engine, can obtain good each cylinder air inlet
Discharge uniformity, but this structure, when progress vehicle is mating, there are the bad problems of suitability.The air inlet of same air inlet pipe
The middle part of air inlet pipe is set, vehicle suitability is preferable, but each cylinder charge flow rate uniformity but it is bad.
The information disclosed in the background technology section is intended only to increase the understanding to the general background of the utility model, and
It is not construed as recognizing or implying in any form that information composition is already known to those of ordinary skill in the art existing
Technology.
Utility model content
The purpose of this utility model is to provide a kind of gas handling system of simple and reasonable four cylinder engine, four cylinders
The air inlet pipe of the gas handling system of engine uses hierarchical design, and EGR exhaust enters from air inlet pipe, so that EGR exhaust and fresh
The mixed path of air is elongated, and mixed effect is more abundant.And the air intake duct of cylinder head uses right hand helix structure, the side of air inlet
Be obtuse angle to the airflow direction angle with air inlet pipe so that the EGR exhaust of cylinder more evenly, charge flow rate scattered error it is small.
To achieve the above object, the utility model provides a kind of gas handling system of four cylinder engine, comprising: cylinder head into
Air flue is four, is right hand helix air intake duct；Air inlet pipe is arranged in the two sides of cylinder head with exhaust pipe, should be into
Tracheae uses hierarchical design, comprising: lower layer's air inlet pipe and upper layer air inlet pipe, closed at one end, the side of lower layer's air inlet pipe
Opened up respectively there are four air inlet pipeline joint, respectively with the inlet communication of four cylinder head air intake ducts so that right hand helix air intake duct
Airintake direction and the charge air flow angular separation of the air inlet pipe be obtuse angle, the upper layer air inlet pipe is arranged in lower layer's air inlet pipe
Top, one end is connected to the other end of lower layer's air inlet pipe；The other end of the upper layer air inlet pipe is intake interface；Air inlet connecting
Pipe, one end are connected to the intake interface of the air inlet pipe, and the side of the air inlet tube offers EGR interface；And EGR branch
Road, comprising: EGR branch air inlet pipe, EGR valve, cooler for recycled exhaust gas and EGR connecting tube, the EGR branch air inlet pipe and exhaust pipe connect
It connects, is connected further through the EGR interface of EGR valve, cooler for recycled exhaust gas and EGR connecting tube and air inlet tube.
In a preferred embodiment, intake interface is laid in the middle position of the second cylinder and third cylinder.
In a preferred embodiment, the middle upper part position of the second cylinder and third cylinder is arranged in intake interface.
Compared with prior art, the gas handling system of four cylinder engine according to the present utility model has the following beneficial effects:
The air inlet pipe of the gas handling system of the four cylinder engine uses hierarchical design, and EGR exhaust enters from air inlet pipe, so that EGR exhaust
Elongated with the mixed path of fresh air, mixed effect is more abundant.And the air intake duct of cylinder head uses right hand helix structure, into
The direction of gas and the airflow direction angle of air inlet pipe are obtuse angle so that the EGR exhaust of cylinder more evenly, charge flow rate scattered error it is small.
Detailed description of the invention
Fig. 1 is the structural schematic diagram according to the gas handling system of the four cylinder engine of one embodiment of the utility model.
Fig. 2 is illustrated according to the lateral sectional structure of the gas handling system of the four cylinder engine of one embodiment of the utility model
Figure.
Fig. 3 is illustrated according to longitudinal sectional structure of the gas handling system of the four cylinder engine of one embodiment of the utility model
Figure.
Fig. 4 is shown according to the air inlet pipe sectional structure of the gas handling system of the four cylinder engine of one embodiment of the utility model
It is intended to.
Specific embodiment
With reference to the accompanying drawing, specific embodiment of the present utility model is described in detail, it is to be understood that this is practical
Novel protection scope is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
As shown in Figure 1 to Figure 3, according to the specific of the gas handling system of the four cylinder engine of the preferred embodiments of the present invention
Structure includes: air inlet pipe 1, air inlet tube 2, cylinder head air intake duct 3 and EGR branch.Wherein, air inlet pipe 1 and exhaust pipe distinguish cloth
It sets in the two sides of cylinder head, the exhaust gas all the way of exhaust pipe enters air inlet pipe 1, cylinder head air inlet by EGR branch, air inlet tube 2
Road 3.Wherein, air inlet pipe 1 uses hierarchical design, and EGR exhaust enters from air inlet pipe, so that EGR exhaust and fresh air mix
Combining diameter is elongated, and mixed effect is more abundant.And cylinder head air intake duct 3 uses right hand helix structure, the direction of air inlet and air inlet
The airflow direction angle of pipe is obtuse angle so that the EGR exhaust of cylinder more evenly, charge flow rate scattered error it is small.
Specifically, cylinder head air intake duct 3 is four, is right hand helix air intake duct, the mixing of exhaust gas and fresh air
Gas respectively enters four cylinders from four cylinder head air intake ducts and participates in burning.Exhaust gas and fresh air mixing whether sufficiently, four
Whether the air inflow of cylinder is uniform, most important to the performance discharge of engine.
Air inlet pipe 1 and exhaust pipe are arranged in the two sides of cylinder head, as shown in figure 4, air inlet pipe 1 uses hierarchical design,
Include: lower layer's air inlet pipe and upper layer air inlet pipe, wherein lower layer's air inlet pipe it is closed at one end, side open up respectively there are four into
Air flue interface, respectively with the inlet communication of four cylinder head air intake ducts 3, and cylinder head air intake duct 3 be right hand helix air intake duct,
The charge air flow angular separation of airintake direction and air inlet pipe 1 is obtuse angle, this makes, and the intake resistance of entire cylinder head is small, cyclone effect
Fruit is good.The top of lower layer's air inlet pipe is arranged in upper layer air inlet pipe, and one end is connected to the other end of lower layer's air inlet pipe.Upper layer air inlet pipe
The other end be intake interface, for being connect with air inlet tube 2.
Preferably, intake interface is laid in the middle position of the second cylinder and third cylinder.
Preferably, the middle upper part position of the second cylinder and third cylinder is arranged in intake interface, facilitates and carries out to all kinds of
The mating arrangement of vehicle；Hierarchical design is used inside air inlet pipe, realizes the effect that air-flow enters from rear end, and EGR is useless
Gas mixing is abundant, the charge flow rate uniformity scattered error of four cylinders is small.
One end of air inlet tube 2 is connected to the intake interface of air inlet pipe 1, and the side of the air inlet tube 2 offers EGR and connects
Mouthful.
EGR branch includes: EGR branch air inlet pipe 4, EGR valve 5, cooler for recycled exhaust gas 6 and EGR connecting tube 7, EGR branch air inlet
Pipe 4 is connect with exhaust pipe, is connect, is made with the EGR interface of air inlet tube 2 further through EGR valve 5, cooler for recycled exhaust gas 6 and EGR connecting tube
The exhaust gas for obtaining fresh air and coming from exhaust pipe, starts to converge at air inlet tube, due to being layered inside air inlet pipe
Design, the path of air inlet is longer, and fresh air and exhaust gas can be made adequately to be mixed before entering cylinder-head port.
As it can be seen that the air inlet pipe of the gas handling system of the four cylinder engine use hierarchical design, EGR exhaust from air inlet pipe into
Enter, so that the mixed path of EGR exhaust and fresh air is elongated, mixed effect is more abundant.The gas handling system of the four cylinder engine
Cylinder head 4 air intake ducts use right hand helix structure, the direction of air inlet and the airflow direction angle of air inlet pipe are obtuse angle, are made
4 cylinders EGR exhaust more evenly, charge flow rate scattered error it is small.Machine shape is more attractive.
To sum up, the air inlet pipe of the gas handling system of the four cylinder engine use hierarchical design, EGR exhaust from air inlet pipe into
Enter, so that the mixed path of EGR exhaust and fresh air is elongated, mixed effect is more abundant.And the air intake duct of cylinder head uses
Right hand helix structure, the direction of air inlet and the airflow direction angle of air inlet pipe are obtuse angle so that the EGR exhaust of cylinder more evenly,
Charge flow rate scattered error is small.
The description of the aforementioned specific exemplary embodiment to the utility model is in order to illustrate and illustration purpose.These
Description is not wishing to for the utility model to be limited to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out
It is many to change and change.The purpose of selecting and describing the exemplary embodiment is that explaining the specific principle of the utility model
And its practical application, so that those skilled in the art can be realized and utilize a variety of different examples of the utility model
Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shapes
Formula is limited.
Claims (3)
1. a kind of gas handling system of four cylinder engine characterized by comprising
Cylinder head air intake duct is four, is right hand helix air intake duct；
Air inlet pipe is arranged in the two sides of cylinder head with exhaust pipe, the air inlet pipe use hierarchical design, comprising: lower layer into
Tracheae and upper layer air inlet pipe, lower layer's air inlet pipe it is closed at one end, side is opened up respectively there are four air inlet pipeline joint, respectively
With the inlet communication of four cylinder head air intake ducts so that the air inlet gas of the airintake direction of right hand helix air intake duct and the air inlet pipe
Stream angular separation is obtuse angle, and the upper layer air inlet pipe is arranged in the top of lower layer's air inlet pipe, and one end is another with lower layer air inlet pipe
End connection；The other end of the upper layer air inlet pipe is intake interface；
Air inlet tube, one end are connected to the intake interface of the air inlet pipe, and the side of the air inlet tube offers EGR interface；
And
EGR branch, comprising: EGR branch air inlet pipe, EGR valve, cooler for recycled exhaust gas and EGR connecting tube, the EGR branch air inlet pipe with
Exhaust pipe connection, connects further through the EGR interface of EGR valve, cooler for recycled exhaust gas and EGR connecting tube and air inlet tube.
2. the gas handling system of four cylinder engine as described in claim 1, which is characterized in that the intake interface is laid in second
The middle position of cylinder and third cylinder.
3. the gas handling system of four cylinder engine as claimed in claim 2, which is characterized in that the intake interface is arranged second
The middle upper part position of cylinder and third cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821045998.7U CN208364268U (en) | 2018-07-03 | 2018-07-03 | The gas handling system of four cylinder engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821045998.7U CN208364268U (en) | 2018-07-03 | 2018-07-03 | The gas handling system of four cylinder engine |
Publications (1)
| Publication Number | Publication Date |
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| CN208364268U true CN208364268U (en) | 2019-01-11 |
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| CN201821045998.7U Active CN208364268U (en) | 2018-07-03 | 2018-07-03 | The gas handling system of four cylinder engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757245A (en) * | 2018-07-03 | 2018-11-06 | 广西玉柴机器股份有限公司 | The gas handling system of four cylinder engine |
-
2018
- 2018-07-03 CN CN201821045998.7U patent/CN208364268U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757245A (en) * | 2018-07-03 | 2018-11-06 | 广西玉柴机器股份有限公司 | The gas handling system of four cylinder engine |
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