CN208633897U - A kind of air intake structure of GPF - Google Patents
A kind of air intake structure of GPF Download PDFInfo
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- CN208633897U CN208633897U CN201820713322.4U CN201820713322U CN208633897U CN 208633897 U CN208633897 U CN 208633897U CN 201820713322 U CN201820713322 U CN 201820713322U CN 208633897 U CN208633897 U CN 208633897U
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- air inlet
- particulate matter
- gpf
- inlet pipe
- trap ontology
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Abstract
The utility model relates to the air intake structures of GPF a kind of, it is characterized in that: including the particulate matter trap ontology being located between the ternary catalyzing unit and silencer, the inlet end of the particulate matter trap ontology is equipped with the coupled air inlet end cone of big end, the small end of the air inlet end cone is equipped with coupled air inlet pipe, and the particulate matter trap ontology is connected by air inlet pipe with the ternary catalyzing unit.It can accelerate GPF reproduction speed, improve the arresting efficiency of particulate matter trap ontology, the exhaust gas after deep purifying petrol engine combustion；It can be effectively reduced exhaust back pressure, avoid the formation of air whirl, and the exhaust gas velocity flowed into particulate matter trap ontology is enabled to be evenly distributed, be conducive to the discharge of in-cylinder combustion exhaust gas, engine power performance and economy can not only be improved, it can be improved particle collection efficiency simultaneously, additionally it is possible to reduce the risk of GPF blocking.
Description
Technical field
The utility model relates to the exhaust systems of engine, and in particular to a kind of air intake structure of GPF.
Background technique
It proposes to increase automobile section in worsening environment, national " planning of 2017 automobile industry Long-and Medium-term Developments "
The research and development and popularization of energy environmental protection technology, the discharge of priority control exhaust aftertreatment.Particulate matter is to haze weather shadow in gasoline tail gas
The factor of sound is larger, and therefore, discharge quality (PM), discharge quantity (PN) are discharged as " state six " in granular material discharged evaluation index
The object paid close attention in standard.Gasoline engine particle is broadly divided into two kinds according to the difference of partial size: (particle size is typical for core state
Between 3~30 nm of range) and poly- state (30~500 nm of particle size typical range).Core state particulate matter is mainly engine
Volatile organic principle, solid-state carbon granules, metal ashes and sulfate for generating in combustion etc. are formed by nucleation
's.Poly- state particulate matter is mainly that the primary carbon particle that incomplete combustion generates in engine combustion process passes through reunion and adsorbs
What the substances such as HC, metal ashes and sulfate were formed.
GPF(gasoline engine particulate matter trap) mainly including the metal shell of carrier and package carrier, carrier is by having one
The ceramic honeycomb composition for determining hole density, has packaged by metal shell.Engine exhaust stream passes through from duct wall surface, particulate matter point
It Jing Guo not spread, intercept, the modes such as gravity and inertia are captured filtering.When delivery temperature reaches 500 DEG C, the particle that traps
Object can be burned, and realize the regenerated effect of GPF.But exhaust system, which increases GPF device, can dramatically increase exhaust back pressure, influence to burn
The discharge of indoor exhaust air, and then influence the dynamic property and economy of engine.At present in the design scheme of some products GPF into
The volume at gas end is big, and inlet end is caused to form apparent vortex, not only increases exhaust system backpressure, and easily cause GPF
Carrier blocking.In order to realize better particle collection effect, while exhaust back pressure is reduced to the maximum extent, efficiently
GPF air intake structure reduces encapsulation back pressure, becomes a kind of feasible and effective approach.Therefore, the air intake structure of GPF is designed to drop
The back pressure of low exhaust system has great importance.
Summary of the invention
The purpose of the utility model is to provide the air intake structures of GPF a kind of, can accelerate GPF reproduction speed, improve particle
The arresting efficiency of object trap ontology, the exhaust gas after deep purifying petrol engine combustion；It can be effectively reduced exhaust back pressure, avoid shape
At air whirl, and the exhaust gas velocity flowed into particulate matter trap ontology is enabled to be evenly distributed, is conducive to in-cylinder combustion
The discharge of exhaust gas can not only improve engine power performance and economy, while can be improved particle collection efficiency, additionally it is possible to
Reduce the risk of GPF blocking.
The air intake structure of a kind of GPF described in the utility model, it is characterized in that: including being located at the ternary catalyzing unit and disappearing
Particulate matter trap ontology between sound device, the inlet end of the particulate matter trap ontology are equipped with the coupled air inlet of big end
End cone, the small end of the air inlet end cone are equipped with coupled air inlet pipe, the particulate matter trap ontology by air inlet pipe with
The ternary catalyzing unit is connected.
Further, the air inlet pipe, air inlet end cone, the axial line of particulate matter trap ontology are conllinear；And the inlet end
The distance L1 for boring small end face to large end face is 13~18mm, and the angle theta of the air inlet end cone side and large end face is 20 °~30 °.
Further, the diameter d of the air inlet pipe is 45~55mm, and the length L2 of the air inlet pipe is 65~75mm.
Further, the air inlet pipe and air inlet end cone material are cast iron or stainless steel.
The beneficial technical effect of the utility model:
Since particulate matter trap ontology to be arranged between ternary catalyzing unit and silencer, the regeneration speed of GPF is accelerated
Degree, improve the arresting efficiency of particulate matter trap ontology, the exhaust gas after deep purifying petrol engine combustion；Due in particulate matter
The inlet end of trap ontology is connected with air inlet end cone, effectively reduces exhaust back pressure, avoids to form air whirl, and makes
The exhaust gas velocity flowed into particulate matter trap ontology is evenly distributed, and is conducive to the discharge of in-cylinder combustion exhaust gas, not only increases
Engine power performance and economy, while particle collection efficiency is improved, also reduce the risk of GPF blocking；Due to into
Gas end cone small end face to the distance of large end face, the angle of air inlet end cone side and large end face, the diameter of air inlet pipe, air inlet pipe length
The value range of degree is defined, so that effect is more preferable.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of air inlet end cone and air inlet pipe.
In figure: 1- particulate matter trap ontology, 2- air inlet end cone, 3- air inlet pipe, 4- air outlet end cone, 5- escape pipe, 6- tri-
First catalyst converter, 7- silencer；
Distance of the L1- air inlet end cone small end face to large end face, the length of L2- air inlet pipe, the diameter of d- air inlet pipe, θ-air inlet
The angle of end cone side and large end face.
Specific embodiment
It elaborates below in conjunction with drawings and examples to the utility model.
The air intake structure of a kind of GPF referring to figure 1 and figure 2, it is characterized in that: including being located at the ternary catalyzing unit 6
The inlet end of particulate matter trap ontology 1 between silencer 7, the particulate matter trap ontology 1 is equipped with big end and its phase
The small end of air inlet end cone 2 even, the air inlet end cone 2 is equipped with coupled air inlet pipe 3, the particulate matter trap ontology 1
It is connected by air inlet pipe 3 with the ternary catalyzing unit 6.It is coupled that the outlet side of particulate matter trap ontology 1 is equipped with big end
Air outlet end cone 4, the small end of air outlet end cone 4 are equipped with escape pipe 5, and particulate matter trap ontology 1 passes through escape pipe 5 and 7 phase of silencer
Even.The exhaust gas of engine air in-cylinder combustion enters in particulate matter trap ontology 1 after the purification of ternary catalyzing unit 6, particulate matter
Trap ontology 1 can trap the particulate matter in exhaust gas, and the particulate matter after trapping can when delivery temperature reaches 500 DEG C
Burning is CO2, reaches the regenerated effect of GPF, the exhaust gas after deep purifying petrol engine combustion.Ternary catalyzing unit 6 is being aoxidized and is being gone back
When the pernicious gases such as former CO, HC and NOx, certain heat can be released, can be accelerated to particle in particulate matter trap ontology 1
The burning of object improves the arresting efficiency of particulate matter trap ontology 1.Air inlet end cone 2 can be effectively reduced exhaust back pressure, avoid shape
At air whirl, and the exhaust gas velocity flowed into particulate matter trap ontology 1 is enabled to be evenly distributed, is conducive to in-cylinder combustion
The discharge of exhaust gas can not only improve engine power performance and economy, while can be improved particle collection efficiency, additionally it is possible to
Reduce the risk of GPF blocking.
The air inlet pipe 3, air inlet end cone 2, the axial line of particulate matter trap ontology 1 are conllinear；And the air inlet end cone 2 is small
The distance L1 of end face to large end face is 15mm, and the angle theta of 2 side of air inlet end cone and large end face is 25 °.The air inlet pipe 3
Diameter d be 50mm, the length L of the air inlet pipe 3 is 70mm.The air inlet pipe 3 and 2 material of air inlet end cone are cast iron or stainless
Steel.
The distance L1 of 2 small end face of air inlet end cone to large end face can be 13mm, 14mm, 16mm, 17mm or 18mm, inlet end
The angle theta for boring 2 sides and large end face can be 20 °, 21 °, 22 °, 23 °, 24 °, 26 °, 27 °, 28 °, 29 ° or 30 °, air inlet pipe 3
Diameter d can be 45mm, 46mm, 47mm, 48mm, 49mm, 51mm, 52mm, 53mm, 54mm or 55mm, the length of air inlet pipe 3
L2 can be 65mm, 66mm, 67mm, 68mm, 69mm, 71mm, 72mm, 73mm, 74mm or 75mm；This four parameter any combination
Constitute other embodiment.To the distance L1 of 2 small end face of air inlet end cone to large end face, 2 side of air inlet end cone and large end face
Angle theta, the diameter d of air inlet pipe 3, air inlet pipe 3 length L2 value range restriction enable to exhaust back pressure effect preferably,
Improve particle collection efficiency.
Through CFD simulation calculation, and verification experimental verification is combined, when the diameter d of air inlet pipe 3 is 50mm, the length L2 of air inlet pipe 3 is
70mm, the distance L1 of 2 small end face of air inlet end cone to large end face are 15mm, and the angle theta of 2 side of air inlet end cone and large end face is 25 °
Shi Xiaoguo is best.
Embodiment described above is only that preferred embodiments of the present invention are described, not practical new to this
The range of type is defined, and under the premise of not departing from the utility model design marrow, those of ordinary skill in the art are to this reality
The various changes and improvements made by novel technical solution should all be fallen into the protection scope of the utility model.
Claims (4)
1. a kind of air intake structure of GPF, it is characterized in that: including the particulate matter being located between ternary catalyzing unit (6) and silencer (7)
Trap ontology (1), the inlet end of the particulate matter trap ontology (1) are equipped with the coupled air inlet end cone (2) of big end, institute
The small end for stating air inlet end cone (2) is equipped with coupled air inlet pipe (3), and the particulate matter trap ontology (1) passes through air inlet pipe
(3) it is connected with the ternary catalyzing unit (6).
2. the air intake structure of GPF according to claim 1, it is characterized in that: the air inlet pipe (3), air inlet end cone (2),
The axial line of grain object trap ontology (1) is overlapped；And air inlet end cone (2) small end face to large end face distance L1 be 13~
The angle theta of 18mm, air inlet end cone (2) side and large end face is 20 °~30 °.
3. the air intake structure of GPF according to claim 1 or 2, it is characterized in that: the diameter d of the air inlet pipe (3) be 45~
55mm, the length L2 of the air inlet pipe (3) are 65~75mm.
4. the air intake structure of GPF according to claim 1, it is characterized in that: the air inlet pipe (3) and air inlet end cone (2) material
Matter is cast iron or stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820713322.4U CN208633897U (en) | 2018-05-14 | 2018-05-14 | A kind of air intake structure of GPF |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820713322.4U CN208633897U (en) | 2018-05-14 | 2018-05-14 | A kind of air intake structure of GPF |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208633897U true CN208633897U (en) | 2019-03-22 |
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ID=65732029
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820713322.4U Active CN208633897U (en) | 2018-05-14 | 2018-05-14 | A kind of air intake structure of GPF |
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| Country | Link |
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| CN (1) | CN208633897U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110700927A (en) * | 2019-10-18 | 2020-01-17 | 浙江达峰汽车技术有限公司 | Four-effect gasoline engine tail gas catalytic purification system meeting national six-emission standard |
| CN112360606A (en) * | 2020-11-10 | 2021-02-12 | 烟台工程职业技术学院(烟台市技师学院) | Automobile exhaust pipeline system with noise reduction and tail gas purification functions |
-
2018
- 2018-05-14 CN CN201820713322.4U patent/CN208633897U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110700927A (en) * | 2019-10-18 | 2020-01-17 | 浙江达峰汽车技术有限公司 | Four-effect gasoline engine tail gas catalytic purification system meeting national six-emission standard |
| CN112360606A (en) * | 2020-11-10 | 2021-02-12 | 烟台工程职业技术学院(烟台市技师学院) | Automobile exhaust pipeline system with noise reduction and tail gas purification functions |
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