CN206681841U - A kind of burning chamber of diesel engine - Google Patents
A kind of burning chamber of diesel engine Download PDFInfo
- Publication number
- CN206681841U CN206681841U CN201720101344.0U CN201720101344U CN206681841U CN 206681841 U CN206681841 U CN 206681841U CN 201720101344 U CN201720101344 U CN 201720101344U CN 206681841 U CN206681841 U CN 206681841U
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- Prior art keywords
- diesel engine
- guiding region
- boss
- wall guiding
- lip
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The utility model discloses a kind of burning chamber of diesel engine, including lip area, the fuel colliding wall guiding region that connects with lip area and extend to combustion chamber and connect with fuel colliding wall guiding region and to the raised boss choke zone of combustion chamber；Lip area uses lips mouth structure, can more rationally utilize combustion recess outside air, reduce the NOx generation amount caused by the integrated distribution of high-temperature region；Fuel colliding wall guiding region its there is less reentrant diameter and larger pit diameter to form obvious necking feature, air-fuel mixture inside pit can be strengthened while combustion heat release early stage is suppressed, accelerate mid-term combustion heat release speed, so as to ensure the high efficiency entirely burnt；Boss choke zone is made up of central boss and throttling ridge, the hypotenuse of central boss forms throttling ridge with the pit bottom transition position chamfering of fuel colliding wall guiding region, can suppress after burning speed, reduces late combustion NOx generating rates, the Iinvalid volume in combustion chamber is reduced simultaneously, improves compression ratio.
Description
Technical field
It the utility model is related to a kind of burning chamber of diesel engine of efficient low-discharging.
Background technology
All the time there is oil consumption and NOx contradictory relation, both are difficult to reduce simultaneously for conventional diesel engine ω shapes combustion chamber.Face
To following increasingly stricter Abgasgesetz, solving this contradictory relation becomes more and more urgent.
The content of the invention
The technical problems to be solved in the utility model is to provide a kind of oil consumption and NOx and soot emissions of can reducing simultaneously
Burning chamber of diesel engine, the independent control in diesel combustion each stage is realized by chamber structure design, so as to rationally control
Mixing and rate of heat release reach the purpose of efficient low-discharging.
The technical solution of the utility model is, with reference to accompanying drawing：
A kind of burning chamber of diesel engine, including lip area 1, the fuel colliding wall that connects with lip area and extend to combustion chamber
Guiding region 2 and connect with fuel colliding wall guiding region 2 and to the raised boss choke zone 3 of combustion chamber.Lip area 1 is using double
Lip configuration, combustion recess outside air can be more rationally utilized, reduce the NOx caused by the integrated distribution of high-temperature region and give birth to
Cheng Liang.Reentrant diameter D2=0.56~0.68D of fuel colliding wall guiding region 2, wherein pit diameter D3=0.59~0.72D, D are
Diesel engine cylinder diameter, and pit necking rate D2/D3=0.94~0.96, it has less reentrant diameter and larger pit diameter
To form obvious necking feature, air-fuel mixture inside pit can be strengthened while combustion heat release early stage is suppressed, accelerated
Mid-term combustion heat release speed, so as to ensure the high efficiency entirely burnt.Boss choke zone 3 is by central boss 4 and 5 groups of ridge of throttling
Into the hypotenuse of central boss 4 forms throttling ridge 5 with the pit bottom transition position chamfering of fuel colliding wall guiding region 2, and the structure can
Suppress after burning speed, reduce late combustion NOx generating rates, while reduce the Iinvalid volume in combustion chamber, improve compression
Than.
Further, lip diameter D1=0.66~0.81D in the lip area, lip height H1=0.027~
0.033D, lip inclination alpha 1=8~12 °, wherein D are diesel engine cylinder diameter.
Further, the fuel colliding wall guiding region pits depth H 2=0.15~0.18D, wherein D are cylinder of diesel engine
Footpath.
Further, height H3=0.045~0.055D of the central boss of the boss choke zone, apex angle α 2=145
~155 °；Chamfer radius R=0.046~0.056D of throttling ridge 5, wherein D is diesel engine cylinder diameter.
The utility model realizes the independent control in diesel combustion each stage by chamber structure design, reduces early stage
Burn rate accelerates mid-term burn rate to ensure the high efficiency of whole combustion process, after reduction to suppress NOx early stage generation
So as to suppress later stage NOx generations, final realize ensures to reduce NOx and soot emissions amount on the basis of efficient burning phase burn rate
Purpose.
Brief description of the drawings
Fig. 1 is burning chamber of diesel engine structural representation of the present utility model.
Fig. 2 is burning chamber of diesel engine structural representation of the present utility model.
Specific embodiment
The technical solution of the utility model is discussed in detail below in conjunction with drawings and examples：
A kind of burning chamber of diesel engine, combustion-chamber shape including lip area 1, with lip area as shown in figure 1, connect and to burning
The fuel colliding wall guiding region 2 of chamber interior extension and connect with fuel colliding wall guiding region 2 and to the raised boss of combustion chamber
Choke zone 3.Boss choke zone 3 is made up of central boss 4 and throttling ridge 5, hypotenuse and the fuel colliding wall guiding region 2 of central boss 4
Pit bottom transition position chamfering formed throttling ridge 5.
As shown in Fig. 2 lip area 1 uses lips mouth structure, lip diameter D1=0.66~0.81D, lip height H1=
0.027~0.033D, lip inclination alpha 1=8~12 °.In fuel colliding wall guiding region 2, reentrant diameter D2=0.56~0.68D,
Pit diameter D3=0.59~0.72D, and pit necking rate D2/D3=0.94~0.96, pit depth H2=0.15~
0.18D.At boss choke zone 3, height H3=0.045~0.055D of central boss 4, apex angle α 2=145~155 °, throttling
Chamfer radius R=0.046~0.056D at ridge 5, wherein D are diesel engine cylinder diameter.
Lip area 1 uses lips mouth structure, can more rationally utilize combustion recess outside air, reduce because of high temperature
NOx generation amount caused by area's integrated distribution.Fuel colliding wall guiding region 2 have less reentrant diameter and larger pit diameter with
Obvious necking feature is formed, air-fuel mixture inside pit can be strengthened while combustion heat release early stage is suppressed, in quickening
Phase combustion heat release speed, so as to ensure the high efficiency entirely burnt.The hypotenuse of central boss 4 and pit bottom transition position chamfering
Into throttling ridge 5, the structure can suppress after burning speed, reduce late combustion NOx generating rates, while reduce in combustion chamber
Iinvalid volume, improve compression ratio.Finally, the combustion chamber reaches the effect of efficient low-discharging.
Embodiment 1
As shown in Fig. 2 burning chamber of diesel engine D1=72mm, H1=2.94mm, α 1=10 °, D2=61mm, D3=64mm,
2=150 ° of H2=16.5mm, H3=5mm, α, R=5mm.
The design passes through hydrokinetics calculation, compared with former machine combustion chamber, under identical oil consumption, and A100 operating modes NOx
11% is reduced, soot reduces by 75%.
Claims (4)
1. a kind of burning chamber of diesel engine, it is characterised in that connect including lip area, with lip area and extend to combustion chamber
Fuel colliding wall guiding region and connect with fuel colliding wall guiding region and to the raised boss choke zone of combustion chamber；The lip
Mouth region uses lips mouth structure；Reentrant diameter D2=0.56~0.68D of the fuel colliding wall guiding region, pit diameter D3=
0.59~0.72D, wherein D are diesel engine cylinder diameter, and pit necking rate D2/D3=0.94~0.96；The boss choke zone by
Central boss and throttling ridge composition, the hypotenuse of central boss are formed with the pit bottom transition position chamfering of fuel colliding wall guiding region and saved
Flow ridge.
A kind of 2. burning chamber of diesel engine as claimed in claim 1, it is characterised in that lip diameter D1=in the lip area
0.66~0.81D, lip height H1=0.027~0.033D, lip inclination alpha 1=8~12 °, wherein D are diesel engine cylinder diameter.
3. a kind of burning chamber of diesel engine as claimed in claim 1, it is characterised in that fuel colliding wall guiding region pits are deep
H2=0.15~0.18D is spent, wherein D is diesel engine cylinder diameter.
4. a kind of burning chamber of diesel engine as claimed in claim 1, it is characterised in that the central boss of the boss choke zone
Height H3=0.045~0.055D, apex angle α 2=145~155 °；Chamfer radius R=0.046~0.056D of throttling ridge, wherein
D is diesel engine cylinder diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720101344.0U CN206681841U (en) | 2017-01-25 | 2017-01-25 | A kind of burning chamber of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720101344.0U CN206681841U (en) | 2017-01-25 | 2017-01-25 | A kind of burning chamber of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206681841U true CN206681841U (en) | 2017-11-28 |
Family
ID=60396417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720101344.0U Active CN206681841U (en) | 2017-01-25 | 2017-01-25 | A kind of burning chamber of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206681841U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762099A (en) * | 2017-01-25 | 2017-05-31 | 中国第汽车股份有限公司 | A kind of burning chamber of diesel engine |
| CN116398315A (en) * | 2023-03-27 | 2023-07-07 | 一汽解放汽车有限公司 | Diesel engine combustion chamber, piston and diesel engine |
-
2017
- 2017-01-25 CN CN201720101344.0U patent/CN206681841U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762099A (en) * | 2017-01-25 | 2017-05-31 | 中国第汽车股份有限公司 | A kind of burning chamber of diesel engine |
| CN116398315A (en) * | 2023-03-27 | 2023-07-07 | 一汽解放汽车有限公司 | Diesel engine combustion chamber, piston and diesel engine |
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Legal Events
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180816 Address after: 130011 2259 Dongfeng Street, Xinxin economic and Technological Development Zone, Changchun, Jilin Co-patentee after: FAW Jiefang Automotive Co., Ltd. Patentee after: China FAW Group Corporation Address before: 130011 2259 Dongfeng Street, Xinxin economic and Technological Development Zone, Changchun, Jilin Patentee before: China FAW Group Corporation |