CN208578655U - EGR gas handling system and engine - Google Patents
EGR gas handling system and engine Download PDFInfo
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- CN208578655U CN208578655U CN201821013829.5U CN201821013829U CN208578655U CN 208578655 U CN208578655 U CN 208578655U CN 201821013829 U CN201821013829 U CN 201821013829U CN 208578655 U CN208578655 U CN 208578655U
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- air inlet
- inlet pipe
- handling system
- egr
- gas handling
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Abstract
The utility model provides a kind of EGR gas handling system and engine, EGR gas handling system includes air inlet pipe, air inlet pipe has fresh air inlet, EGR exhaust entrance and mixed gas outlet, and the spiral stream guidance structure for making the fresh air entered from fresh air inlet be whirled up movement is provided on the inner wall of air inlet pipe.In the course of work, the inner wall outermost by the effect of spiral stream guidance structure, air inlet pipe receives rotating force, and air inlet is caused to be whirled up movement；When EGR exhaust enters air inlet pipe, intake resistance is smaller under circumnutation drive, is involved in inside air inlet, is accelerated mixing.The utility model in air inlet pipe by increasing spiral stream guidance structure, fresh air is set to be whirled up movement, increase air inlet cyclotron velocity, accelerate fusion EGR exhaust, so improving the mixing uniformity of EGR exhaust and fresh air, to solve cannot uniformly be mixed because of EGR exhaust caused by diesel combustion it is uneven, NOXThe excessively high problem of emission.
Description
Technical field
The utility model relates to technical field of engines, and more specifically to a kind of EGR gas handling system, this is practical new
Type further relates to a kind of engine.
Background technique
EGR (abbreviation of Exhaust Gas Recirculation, exhaust gas recycling) system, by by diesel oil device or vapour
The a part for the exhaust gas that oil machine generates sends cylinder back to, and retarded combustion process formed chamber pressure slowly, the pollution ring of generation
The nitrogen oxides in border is reduced.
In the prior art, EGR exhaust adapter tube is connect with air inlet pipe by mixer, and mixer has mixing chamber, keeps EGR useless
Gas each leads into mixing chamber with fresh air and mixes, and in the mixed process, is influenced by fresh air, the air inlet of EGR exhaust
Resistance is larger, and flow-disturbing uniformity is poor, be easier to occur cannot uniformly be mixed because of EGR exhaust caused by diesel combustion it is uneven,
NOXThe excessively high problem of emission.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of EGR gas handling system, with improve EGR exhaust with it is fresh
The mixing uniformity of air, so that diesel combustion caused by solution cannot be mixed uniformly because of EGR exhaust is uneven, NOXDischarge
The excessively high problem of object.
The another object of the utility model is to provide a kind of engine with above-mentioned EGR gas handling system.
In order to achieve the above object, the utility model provides the following technical solutions:
A kind of EGR gas handling system, including air inlet pipe, the air inlet pipe have fresh air inlet, EGR exhaust entrance and mix
Gas outlet is closed, being provided on the inner wall of the air inlet pipe can be such that the fresh air entered from the fresh air inlet generates back
Revolve the spiral stream guidance structure of movement.
Preferably, in above-mentioned EGR gas handling system, the spiral stream guidance structure is spiral stream guidance slot.
Preferably, in above-mentioned EGR gas handling system, the spiral stream guidance slot includes the first helicla flute and second arranged in a crossed manner
Helicla flute.
Preferably, in above-mentioned EGR gas handling system, the spiral stream guidance structure runs through the entire axial direction of the air inlet pipe.
It preferably, further include mixer, the entrance of the mixer goes out with the gaseous mixture in above-mentioned EGR gas handling system
Mouth connection.
It can be seen from the above technical scheme that EGR gas handling system provided by the utility model includes air inlet pipe, air inlet pipe
With fresh air inlet, EGR exhaust entrance and mixed gas outlet, being provided on the inner wall of air inlet pipe can make from fresh air
The fresh air that entrance enters is whirled up the spiral stream guidance structure of movement.
It should be noted that fresh air inlet is the straight mouth in end of air inlet pipe, EGR exhaust by the decision of air inflow
Entrance is that the side branch of air inlet pipe is open.
In the course of work, when the engine fresh air of flat motion enters fresh air inlet, by spiral stream guidance structure
Effect, the inner wall outermost of air inlet pipe receives rotating force, air inlet caused to be whirled up movement；When EGR exhaust enters air inlet
Pipe, intake resistance is smaller under circumnutation drive, is involved in inside air inlet, is accelerated mixing.
The utility model makes fresh air be whirled up movement, increases by increasing spiral stream guidance structure in air inlet pipe
Air inlet cyclotron velocity accelerates fusion EGR exhaust, i.e. quickening exhaust gas and fresh air mixing velocity, thus improve EGR exhaust with
The mixing uniformity of fresh air, thus solve cannot uniformly be mixed because of EGR exhaust caused by diesel combustion it is uneven,
NOXThe excessively high problem of emission.
In addition, the utility model is relatively simple for structure, technique requirement is lower, and exploitativeness is strong, and cost is relatively low.And by
Circumnutation effect, the blocking possibility of air inlet pipe is smaller, improves safety.
The utility model additionally provides a kind of engine, including gas handling system, and the gas handling system is any of the above-described kind of EGR
Gas handling system, since above-mentioned EGR gas handling system has said effect, the engine with above-mentioned EGR gas handling system has same
Effect, therefore, this article will not repeat them here.
Detailed description of the invention
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 this
Some embodiments of utility model, for those of ordinary skill in the art, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is the main view of air inlet pipe provided by the embodiment of the utility model；
Fig. 2 is the left view of air inlet pipe provided by the embodiment of the utility model；
Fig. 3 is the cross-sectional view of air inlet pipe provided by the embodiment of the utility model.
Specific embodiment
The utility model embodiment provides a kind of EGR gas handling system, and the mixing for improving EGR exhaust and fresh air is equal
Even property, thus solve cannot uniformly be mixed because of EGR exhaust caused by diesel combustion it is uneven, NOXEmission is excessively high to ask
Topic.
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
Attached drawing 1-3 is please referred to, EGR gas handling system provided by the embodiment of the utility model includes air inlet pipe 1, and air inlet pipe 1 has
There are fresh air inlet A, EGR exhaust entrance B and mixed gas outlet C, being provided on the inner wall of air inlet pipe 1 can make from fresh sky
The fresh air that gas entrance A enters is whirled up the spiral stream guidance structure 2 of movement.
It should be noted that fresh air inlet A is the straight mouth in end of air inlet pipe 1 by the decision of air inflow, EGR is useless
Gas entrance B is that the side branch of air inlet pipe 1 is open.
In the course of work, when the engine fresh air of flat motion enters fresh air inlet A, by spiral stream guidance structure
The inner wall outermost of 2 effect, air inlet pipe 1 receives rotating force, and air inlet is caused to be whirled up movement；When EGR exhaust enter into
Tracheae 1, intake resistance is smaller under circumnutation drive, is involved in inside air inlet, is accelerated mixing.
The utility model makes fresh air be whirled up movement, increases by increasing spiral stream guidance structure 2 in air inlet pipe 1
Gas cyclotron velocity is added, accelerates fusion EGR exhaust, i.e. quickening exhaust gas and fresh air mixing velocity, so improving EGR exhaust
With the mixing uniformity of fresh air, thus solve cannot uniformly be mixed because of EGR exhaust caused by diesel combustion it is uneven,
NOXThe excessively high problem of emission.
In addition, the utility model is relatively simple for structure, technique requirement is lower, and exploitativeness is strong, and cost is relatively low.And by
Circumnutation effect, the blocking possibility of air inlet pipe 1 is smaller, improves safety.
Preferably, spiral stream guidance structure 2 is spiral stream guidance slot.The utility model passes through in 1 inwall processing spiral of air inlet pipe
This simple process mode of diversion trench obtains spiral stream guidance structure 2, easy to process, saves cost.Above-mentioned spiral stream guidance knot
Structure 2 can also be spiral stream guidance muscle, or multiple spaced arc convex are similarly made from fresh air with reaching
The fresh air that entrance A enters is whirled up the effect of movement, and the utility model is not specifically limited herein.
Quantity, the height that the utility model passes through control spiral stream guidance slot；The parameters such as the screw pitch of helix improve mixing speed
Rate and uniformity.
Specifically, in order to increase air inlet cyclotron velocity, spiral stream guidance slot includes the first helicla flute and second arranged in a crossed manner
Helicla flute.The utility model makes fresh air generate two bursts of circumnutations respectively by the first spiral groove and the second spiral groove, into
One step accelerates exhaust gas and fresh air mixing velocity.The first spiral groove and the second spiral groove can also be arranged in parallel.Certainly, spiral shell
Revolving diversion trench can also only include one of the first spiral groove and the second spiral groove.
Spiral stream guidance structure 2 runs through the entire axial direction of air inlet pipe 1.The present embodiment keeps air inlet pipe 1 entire axial to fresh
Air is whirled up movement, further improves exhaust gas and fresh air mixed effect.According to the practical pipe range of air inlet pipe 1, spiral shell
Rotation flow-guiding structure 2 can also be provided only on air inlet pipe 1 close to the position of air inlet.
In order to further optimize the above technical scheme, EGR gas handling system further includes mixer, the entrance of mixer with mix
Gas exports C connection.So, mixer can be to the exhaust gas and fresh air exported from the mixed gas outlet C of air inlet pipe 1
Mixture further mixes, to realize dual mixing, more optimized mixed effect.Above-mentioned mixer can be to pass through rotation
The mixing of gas is realized in movement, or other can mix the structure of gas.
It is understood that the utility model can not also include above-mentioned mixer, only realized by air inlet pipe 1 primary mixed
It closes.
The utility model embodiment additionally provides a kind of engine, including gas handling system, and gas handling system is any of the above-described
The EGR gas handling system that embodiment provides, improves the mixing uniformity of EGR exhaust and fresh air, to solve because EGR is useless
Diesel combustion caused by gas cannot be mixed uniformly is uneven, NOXThe excessively high problem of emission, its advantage is that by EGR air inlet system
System bring, specifically please refers to relevant part in above-described embodiment, details are not described herein again.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and 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 present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (6)
1. a kind of EGR gas handling system, which is characterized in that including air inlet pipe (1), the air inlet pipe (1) has fresh air inlet
(A), EGR exhaust entrance (B) and mixed gas outlet (C), being provided on the inner wall of the air inlet pipe (1) can make from described fresh
The fresh air that air intake (A) enters is whirled up the spiral stream guidance structure (2) of movement.
2. EGR gas handling system according to claim 1, which is characterized in that the spiral stream guidance structure (2) is spiral stream guidance
Slot.
3. EGR gas handling system according to claim 2, which is characterized in that the spiral stream guidance slot includes arranged in a crossed manner
The first spiral groove and the second spiral groove.
4. EGR gas handling system according to claim 1, which is characterized in that the spiral stream guidance structure (2) through it is described into
The entire axial direction of tracheae (1).
5. EGR gas handling system according to claim 1-4, which is characterized in that it further include mixer, the mixing
The entrance of device is connect with the mixed gas outlet (C).
6. a kind of engine, including gas handling system, which is characterized in that the gas handling system is any one of such as claim 1-5 institute
The EGR gas handling system stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821013829.5U CN208578655U (en) | 2018-06-28 | 2018-06-28 | EGR gas handling system and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821013829.5U CN208578655U (en) | 2018-06-28 | 2018-06-28 | EGR gas handling system and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208578655U true CN208578655U (en) | 2019-03-05 |
Family
ID=65509796
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821013829.5U Active CN208578655U (en) | 2018-06-28 | 2018-06-28 | EGR gas handling system and engine |
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| Country | Link |
|---|---|
| CN (1) | CN208578655U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024069253A1 (en) * | 2022-09-30 | 2024-04-04 | Tata Motors Limited | An exhaust gas recirculation device for an engine |
-
2018
- 2018-06-28 CN CN201821013829.5U patent/CN208578655U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024069253A1 (en) * | 2022-09-30 | 2024-04-04 | Tata Motors Limited | An exhaust gas recirculation device for an engine |
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