CN207554235U - The air inlet pipe and engine of engine - Google Patents
The air inlet pipe and engine of engine Download PDFInfo
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- CN207554235U CN207554235U CN201721448083.6U CN201721448083U CN207554235U CN 207554235 U CN207554235 U CN 207554235U CN 201721448083 U CN201721448083 U CN 201721448083U CN 207554235 U CN207554235 U CN 207554235U
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- air inlet
- inlet pipe
- pipeline section
- exhaust gas
- engine
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Abstract
This application discloses the air inlet pipe and engine of a kind of engine, wherein, air inlet pipe includes total pipeline section and manifold segments, and the exhaust gas interface for being connected with flue gas leading is provided on the tube wall of total pipeline section；The exhaust steam passage with exhaust gas orifice and closing is provided on the inner wall of total pipeline section, the waste gas outlet of multiple connection exhaust steam passages and total inner tube segment is offered on exhaust steam passage.With existing flue gas leading directly compared with air inlet tube connects, structure in this air inlet pipe, which is equivalent in air inlet pipe, is integrated with mixer, exhaust gas carries out multi-point air inlet by multiple waste gas outlets positioned at total inner tube segment and fresh air, exhaust gas is realized to mix with the uniform of fresh air, and compared with the existing structure for mixing elongated segment incorporation time by lengthening, make structure compacter.
Description
Technical field
The utility model is related to technical field of engines, more particularly to a kind of air inlet pipe of engine.Further relate to a kind of packet
Engine containing the air inlet pipe.
Background technology
With the upgrading of emission request, to reduce engine itself NOx emission, that adds egr system within the engine must
The property wanted is higher and higher.Egr system refers to gas recirculation system, is that an a kind of part by discharge exhaust gas after burning detaches simultaneously
Engine charge side is introduced, it is made to participate in the technology of burning once again.
In order to meet requirement of the engine to the mixing uniformity of exhaust gas and fresh air, existing solution such as Fig. 1
Shown, exhaust gas is entered through through flue gas leading 02 in the air inlet tube 01 of fresh air, realized in air inlet tube 01 exhaust gas with it is new
The mixing of fresh air, by lengthening the length of mixing section, to extend the incorporation time of exhaust gas and fresh air, mixed gas
After air heater 03, engine is entered by air inlet pipe.
Although existing scheme disclosure satisfy that mixing uniformity requirement of the EGR engine to exhaust gas and fresh air, but right
The requirement of space layout is excessively harsh, generally requires longer flue gas leading 02 and the cooperation of air inlet tube 01 to meet mixing length
Requirement, so as to cause engine charge lateral line long, difficulty in arrangement is nervous for light duty engine and vehicle space
Type for mating difficulty it is larger.Simultaneously because the defects of above-mentioned self structure, air-flow collides seriously, and gas inlet is caused to hinder
Power is bigger than normal, is unfavorable for the generation of EGR driving pressure differences, influences the realization of EGR rate.
In conclusion while how realizing that exhaust gas is uniformly mixed with fresh air, the mesh of engine compact design is realized
Mark, becomes those skilled in the art's urgent problem to be solved.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of air inlet pipe of engine, with realize exhaust gas with it is fresh
While air is uniformly mixed, the target of engine compact design is realized.
Another of the utility model is designed to provide a kind of engine for including the air inlet pipe, with realize exhaust gas with it is new
While fresh air is uniformly mixed, the target of engine compact design is realized.
In order to achieve the above objectives, the utility model provides following technical scheme：
A kind of air inlet pipe of engine, including total pipeline section and manifold segments, be provided on the tube wall of total pipeline section for
The exhaust gas interface of flue gas leading connection；It is provided on the inner wall of total pipeline section and leads to the exhaust gas of the exhaust gas orifice and closing
Road offers the waste gas outlets of multiple connections exhaust steam passage and total inner tube segment on the exhaust steam passage.
Preferably, in above-mentioned air inlet pipe, circumferential directions of the exhaust steam passage along total pipeline section are described useless
Gas is exported to be set along the circumferencial direction of the exhaust steam passage.
Preferably, in above-mentioned air inlet pipe, the flow area of the waste gas outlet more remote apart from the exhaust gas interface
Area is bigger, and the flow cross-section areas of the waste gas outlet nearer apart from the waste gas outlet is smaller.
Preferably, in above-mentioned air inlet pipe, the quantity of the waste gas outlet is at least three.
Preferably, in above-mentioned air inlet pipe, the radial direction of the discharge directions of the waste gas outlet along total pipeline section.
Preferably, in above-mentioned air inlet pipe, the discharge directions of the waste gas outlet are perpendicular to the axis of total pipeline section
And favour the radial direction of total pipeline section.
Preferably, in above-mentioned air inlet pipe, the discharge directions of the waste gas outlet favour the axis of total pipeline section
And flow to fair current with fresh air.
Present invention also provides a kind of engine, including air inlet pipe, the air inlet pipe for as described in any of the above item into
Tracheae.
Preferably, in above-mentioned engine, further include air heater, the outlet of the air heater with it is described into
The import connection of total pipeline section of tracheae.
Compared with prior art, the beneficial effects of the utility model are：
In the air inlet pipe of engine provided by the utility model, exhaust gas interface is set on the tube wall of total pipeline section, and total
The exhaust steam passage of closing, exhaust steam passage and exhaust gas orifice are provided on the inner wall of pipeline section, is offered on exhaust steam passage multiple
Connect the waste gas outlet of exhaust steam passage and total pipeline section inner wall.During work, the exhaust gas of engine enters through flue gas leading and exhaust gas interface
In exhaust steam passage, and the waste gas outlet by being arranged on exhaust steam passage is passed through in total pipeline section, with the fresh air in total pipeline section
Mixing.With existing flue gas leading directly with air inlet tube connect compared with, the structure in air inlet pipe in the application be equivalent into
Be integrated with mixer on tracheae, exhaust gas by multiple waste gas outlets positioned at total inner tube segment and fresh air progress multi-point into
Gas realizes exhaust gas and is mixed with the uniform of fresh air, and mixes the structure of elongated segment incorporation time by lengthening with existing
It compares, makes structure compacter.In addition, multiple spot air inlet, the air-flow for reducing exhaust gas and fresh air collides, and it is useless to have reached reduction
Gas intake resistance realizes the purpose of high EGR rate.In addition, since total pipeline section directly in air inlet pipe integrates mixed structure so that useless
Gas directly enters engine by air inlet pipe, and exhaust gas inlet is set to after air heater, exhaust gas without air heater,
So as to prevent pollution of the exhaust gas to air heater.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiment of the utility model, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is a kind of structure diagram of gas inlet structure of the prior art；
Fig. 2 is the structure diagram of a kind of air inlet pipe that the utility model embodiment provides；
Fig. 3 is the internal structure schematic diagram of total pipeline section of a kind of air inlet pipe that the utility model embodiment provides；
Fig. 4 is the schematic cross-sectional view of a kind of air inlet pipe that the utility model embodiment provides.
Wherein, 01 it is air inlet tube, 02 be flue gas leading, 03 is air heater；
1 it is manifold segments, 2 be total pipeline section, 21 be exhaust gas interface, 22 be waste gas outlet, 23 be exhaust steam passage, 3 is that air adds
Hot device, 4 are air inlet tube.
Specific embodiment
There is provided a kind of air inlet pipe of engine for the core of the utility model, realize exhaust gas and are mixed with fresh air
While even, the target of engine compact design is realized.
The utility model additionally provides a kind of engine for including the air inlet pipe, realizes exhaust gas and is mixed with fresh air
While even, the target of engine compact design is realized.
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained shall fall within the protection scope of the present invention.
- Fig. 4 is please referred to Fig.2, the utility model embodiment provides a kind of air inlet pipe of engine, hereinafter referred to as air inlet
Pipe, including total pipeline section 2 and manifold segments 1, manifold segments 1 and total pipeline section 2 connect, and manifold segments 1 are used to gas being distributed in engine
Multiple cylinders in, total pipeline section 2 be a manifold, for all manifolds of manifold segments 1 to be connected.Wherein, the pipe of total pipeline section 2
The exhaust gas interface 21 for being connected with flue gas leading is provided on wall；The exhaust steam passage 23 of closing is provided on the inner wall of total pipeline section 2,
Exhaust steam passage 23 is connected with exhaust gas interface 21, and is offered on exhaust steam passage 23 in multiple connection exhaust steam passages 23 and total pipeline section 2
The waste gas outlet 22 in portion.
The operation principle of the air inlet pipe is：Exhaust gas enters the exhaust steam passage in total pipeline section 2 through flue gas leading and exhaust gas interface 21
In 23, and pass through multiple waste gas outlets 22 on exhaust steam passage 23 and be passed through inside total pipeline section 2, exhaust gas is with being passed through in total pipeline section 2
Engine is directly entered after fresh air mixing.
With existing flue gas leading 02 directly compared with the gas inlet structure that air inlet tube 01 connects, the air inlet in the application
Structure on pipe, which is equivalent in air inlet pipe, is integrated with mixer, and exhaust gas is by multiple waste gas outlets inside total pipeline section 2
22 carry out multi-point air inlet and multi-point mixing, realize exhaust gas and are mixed with the uniform of fresh air, and with existing by adding
The structure of long mixing elongated segment incorporation time is compared, and the application is only by changing 2 structure of total pipeline section and intake method of air inlet pipe
Mixed uniformly purpose can be realized, structure is compacter.In addition, multiple spot intake method reduces the gas of exhaust gas and fresh air
Stream collides, and has reached reduction gas inlet resistance, has realized the purpose of high EGR rate.In addition, due to directly in the manifold of air inlet pipe
2 integrated mixed structures of section so that exhaust gas directly enters engine by air inlet pipe, and exhaust gas inlet is necessarily set to air heater
After 3, exhaust gas is without air heater 3, so as to prevent pollution of the exhaust gas to air heater 3.
As shown in figure 3, further, in the present embodiment, circumferential directions of the exhaust steam passage 23 along total pipeline section 2, i.e.,
Exhaust steam passage 23 is loop configuration, and waste gas outlet 22 is set along the circumferencial direction of exhaust steam passage 23.The purpose set in this way be for
Realize multi-point different directions air inlet of the exhaust gas in circumferencial direction, it is more uniform so as to which exhaust gas be made to mix with fresh air.
Certainly, exhaust steam passage 23 can also be along the axial arranged on the inner wall of total pipeline section 2 of total pipeline section 2, correspondingly, exhaust gas
Outlet 22 can equally realize that multi-point air inlet mixes, only mixed effect is not so good as loop configuration along the axial arranged of total pipeline section 2
Exhaust steam passage 23.
Further, in the present embodiment, the flow cross-section areas of the waste gas outlet 22 more remote apart from exhaust gas interface 21 is more
Greatly, the flow cross-section areas of the waste gas outlet 22 nearer apart from exhaust gas interface 21 is smaller.Then exhaust gas enters useless from exhaust gas interface 21
After in gas channel 23, since distance of the waste gas outlet 22 close to exhaust gas interface 21 apart from exhaust gas interface 21 is short, exhaust gas first passes through
Waste gas outlet 22 nearby, distance of the waste gas outlet 22 far from exhaust gas interface 21 apart from exhaust gas interface 21 pass through after exhaust gas
The waste gas outlet 22 of distant place in order to realize that exhaust gas is equably vented into total pipeline section 2, realizes that exhaust gas and the uniform of fresh air mix
It closes, therefore, the waste gas outlet 22 that will be close to exhaust gas interface 21 is set as smaller flow cross-section areas, will be far from exhaust gas interface 21
Waste gas outlet 22 be set as larger flow cross-section areas, and more remote apart from exhaust gas interface 21, then the circulation of waste gas outlet 22
Area of section is bigger, further realizes that exhaust gas is mixed with the uniform of fresh air.
In the present embodiment, the quantity of waste gas outlet 22 is at least three, be specifically as follows three, four, five or
More, the number of turns of waste gas outlet 22 can be a circle, two circles or more circle.Multiple waste gas outlets 22 realize the multi-point of exhaust gas
Air inlet makes mixing more uniform.The quantity of waste gas outlet 22 is not specifically limited herein depending on actual conditions.
In the present embodiment, radial direction of the discharge directions of waste gas outlet 22 along total pipeline section 2.Alternatively, the row of waste gas outlet 22
Gas direction perpendicular to total pipeline section 2 axis and favour the radial direction of total pipeline section 2, i.e., the discharge direction of waste gas outlet 22 is not along manifold
The radial direction of section 2.As long as it can realize that exhaust gas is uniformly mixed with fresh air, it is not limited to the row cited by the present embodiment
Gas mode.
Further, in the present embodiment, the discharge directions of waste gas outlet 22 favour total pipeline section 2 axis and with it is fresh
Air flows to fair current, in this way, can further reduce the collision of exhaust gas and fresh air, further reduces gas inlet resistance
Power further improves EGR rate.
Based on the described air inlet pipe of any of the above embodiment, the utility model embodiment additionally provides a kind of engine,
Including air inlet pipe, wherein, air inlet pipe is such as the described air inlet pipe of any of the above embodiment.
As a result of the air inlet pipe in the application, it can either realize that exhaust gas is mixed with the uniform of fresh air, make simultaneously
The structure of engine is compacter, improves EGR rate.
In the present embodiment, engine further includes air heater 3, the outlet of air heater 3 and the manifold of air inlet pipe
The import connection of section 2, the import of air heater 3 are connect with the outlet of air inlet tube 4.By air heater 3 to fresh sky
Gas is preheated, and reduces the energy consumption of engine, simultaneously as air heater 3 is installed on the upstream of exhaust gas inlet, therefore, is given up
Gas is without air heater 3, so as to prevent pollution of the exhaust gas to air heater 3.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications of these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide range consistent with features of novelty.
Claims (9)
1. a kind of air inlet pipe of engine, including total pipeline section and manifold segments, which is characterized in that set on the tube wall of total pipeline section
It is useful for the exhaust gas interface connected with flue gas leading；It is provided on the inner wall of total pipeline section and the exhaust gas orifice and closing
Exhaust steam passage, the exhaust gas that multiple connections exhaust steam passage and total inner tube segment are offered on the exhaust steam passage goes out
Mouthful.
2. air inlet pipe according to claim 1, which is characterized in that circumferencial direction of the exhaust steam passage along total pipeline section
Arrangement, the waste gas outlet are set along the circumferencial direction of the exhaust steam passage.
3. air inlet pipe according to claim 2, which is characterized in that the waste gas outlet more remote apart from the exhaust gas interface
Flow cross-section areas it is bigger, the flow cross-section areas of the waste gas outlet nearer apart from the waste gas outlet is smaller.
4. air inlet pipe according to claim 2, which is characterized in that the quantity of the waste gas outlet is at least three.
5. air inlet pipe according to claim 2, which is characterized in that the discharge directions of the waste gas outlet are along total pipeline section
Radial direction.
6. air inlet pipe according to claim 2, which is characterized in that the discharge directions of the waste gas outlet are perpendicular to described total
The axis of pipeline section and the radial direction for favouring total pipeline section.
7. air inlet pipe according to claim 2, which is characterized in that the discharge directions of the waste gas outlet favour described total
The axis of pipeline section simultaneously flows to fair current with fresh air.
8. a kind of engine, including air inlet pipe, which is characterized in that the air inlet pipe is such as claim 1-7 any one of them
Air inlet pipe.
9. engine according to claim 8, which is characterized in that air heater is further included, the air heater
Outlet is connect with the import of total pipeline section of the air inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721448083.6U CN207554235U (en) | 2017-11-02 | 2017-11-02 | The air inlet pipe and engine of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721448083.6U CN207554235U (en) | 2017-11-02 | 2017-11-02 | The air inlet pipe and engine of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207554235U true CN207554235U (en) | 2018-06-29 |
Family
ID=62681957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721448083.6U Active CN207554235U (en) | 2017-11-02 | 2017-11-02 | The air inlet pipe and engine of engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN207554235U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559113A (en) * | 2017-11-02 | 2018-01-09 | 潍柴动力股份有限公司 | The air inlet pipe and engine of engine |
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2017
- 2017-11-02 CN CN201721448083.6U patent/CN207554235U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559113A (en) * | 2017-11-02 | 2018-01-09 | 潍柴动力股份有限公司 | The air inlet pipe and engine of engine |
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