CN106593621A - Diesel engine beveled lip combustion chamber - Google Patents
Diesel engine beveled lip combustion chamber Download PDFInfo
- Publication number
- CN106593621A CN106593621A CN201710060512.0A CN201710060512A CN106593621A CN 106593621 A CN106593621 A CN 106593621A CN 201710060512 A CN201710060512 A CN 201710060512A CN 106593621 A CN106593621 A CN 106593621A
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- CN
- China
- Prior art keywords
- area
- lip
- diesel engine
- diameter
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
-
- 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
Abstract
The invention discloses a diesel engine beveled lip combustion chamber which comprises a combustion chamber concave pit area, a lip area and a central boss area, wherein the diagonal line of the lip area and the top surface of a piston form a certain angle to eliminate a closed angle; the concave pit area is connected with the lip area and protrudes out of the external part of the combustion chamber; the central boss area is connected with the concave pit area and protrudes towards the internal part of the combustion chamber; and oblique planes on two sides of the central boss area form a certain angle to reduce invalid volume and increase compression ratio. According to the diesel engine beveled lip combustion chamber, through beveling the lip area, the crack risk of a piston is reduced, and reliability of the piston is improved.
Description
Technical field
Patent of the present invention is related to a kind of use for diesel engine beveled lip combustor.
Background technology
Energy-saving and emission-reduction have become Current internal combustion engines field problem demanding prompt solution.Oil cannot be simultaneously reduced in diesel engine
Consumption and NOx emission.This is because diesel engine is diffusion combustion, the fuel oil sprayed in cylinder concentrates on partial combustion, causes local high
Warm anoxia, generates a large amount of soots, affects oil consumption, and can generate NOx in oxygen-rich area.In order to reduce discharge, optimal combustion
Burning pattern should weaken early stage mixing, accelerate middle and late stage burning, and by controlling combustion heat release speed discharge is reduced, and improve burning effect
Rate.
In order to further reduce oil consumption, explosion pressure is improved, and the mechanical load and thermic load of piston is harsher, to piston
Reliability also has requirements at the higher level.
The content of the invention
The patent of the present invention technical problem to be solved is to provide one kind can be while reduce oil consumption, NOx emission and can be with
The combustor of piston reliability and efficiency of combustion is improved, is coordinated by fuel oil injection and combustor, make gaseous mixture be distributed more adduction
Reason, makes full use of the oxygen in cylinder and space.
The purpose of the present invention is realized by below scheme：
A kind of diesel engine beveled lip combustor, including combustion recess area, lip area and central boss area；Lip area is oblique
Tangent line is angled with piston-top surface；Pit area connects with lip area and protrudes to the outside of combustor；Central boss area with it is recessed
Hole area connects and raised to combustion chamber, and central boss both sides inclined-plane is angled.
Further, the diameter D1=0.5～0.7D in the pit area, cheats depth H1=0.13～0.17D, and wherein D is bavin
Oil machine cylinder diameter.
Further, the pit area and lip area joint reentrant diameter D2=0.55～0.65D, lip area and lip
Area chamfers line joint diameter D3=0.65～0.75D, lip area hole depth H2=0.035～0.045D, lip area piston-top surface
Diameter D4=0.75～0.85D, lip area beveling line depth H 3=0.024～0.035D, lip area beveling line and piston-top surface
Angulation α 1=130～160 °, wherein D is diesel engine cylinder diameter.
Further, the central boss area boss depth H 4=0.04～0.055D, boss both sides inclined-plane angulation α
2=130～150 °, central boss both sides inclined-plane and pit area intersection circular diameter D5=0.3～0.5D, wherein D are diesel engine
Cylinder diameter.
Beveled lip combustor is chamfer by lip area combustion, it is possible to decrease piston cracking risk, improves piston reliability.
Combustor beveling is also caused under high load working condition, and unnecessary fuel oil can be enable along beveling line to it in burning middle and late stage
He moves oxygen-rich area, improves air utilization ratio, and so as to improve efficiency of combustion, after-burning increase can also make the soot that early stage is generated
Discharge rapid oxidation, final Soot Formation is reduced；The increases of central boss both sides bevel angles α 2 can reduce Iinvalid volume, and
Fuel oil interference is not resulted in, so as to improve the thermal efficiency.The modification of above combustion-chamber shape can make full use of oxygen everywhere, high in order
Effect burning, simultaneously as more fully utilizing each several part space, ignition temperature overall reduction suppresses NOx to generate.Finally, reach
Efficient burning, low emission, the effect of high reliability.
Description of the drawings
Fig. 1 is the beveled lip chamber structure schematic diagram of the present invention.
Specific embodiment
A kind of diesel engine beveled lip combustor, as shown in figure 1, combustor includes pit area 1, lip area 2 and middle cardiac prominence
Platform area 3, wherein lip area chamfer line 4 and the angled α 1 of piston-top surface, eliminate wedge angle；Pit area 1 connect with lip area 2 and
Protrude to the outside of combustor, central boss area 3 connects and raised to combustion chamber with pit area 1, central boss both sides inclined-plane
Angled α 2, reduces Iinvalid volume, improves compression ratio.
Diameter D1=0.5～the 0.7D in pit area 1, cheats depth H1=0.13～0.17D, pit area 1 and the joint of lip area 2
Reentrant diameter D2=0.55～0.65D, lip area 2 cheats deep H2=0.035～0.045D, and lip area 2 is straight with beveling line 4 joint
Footpath D3=0.65～0.75D, lip area piston-top surface diameter D4=0.75～0.85D, lip area beveling depth H 3=of line 4
0.024～0.035D, lip area beveling line 4 and piston-top surface angulation α 1=130～160 °, central boss area 3 is one
Round platform, boss depth H 4=0.04～0.055D, boss both sides inclined-plane angulation α 2=130～150 °, central boss both sides
Inclined-plane and pit area intersection circular diameter D5=0.2～0.4D, wherein D are diesel engine cylinder diameter.
Diesel engine beveled lip combustor is chamfer by lip area combustion, it is possible to decrease piston cracking risk, improves piston
Reliability.Combustor beveling is also caused under high load working condition, and unnecessary fuel oil can be enable along oblique in burning middle and late stage
Tangent line to other oxygen-rich areas are moved, and improve air utilization ratio, and so as to improve efficiency of combustion, after-burning increase gives birth to can also early stage
Into soot emissions rapid oxidation, final Soot Formation reduces；It is invalid that the increases of central boss both sides bevel angles α 2 can reduce
Volume, and fuel oil interference is not resulted in, so as to improve the thermal efficiency.The modification of above combustion-chamber shape can make full use of oxygen everywhere
Gas, orderly efficient burning, simultaneously as more fully utilizing each several part space, ignition temperature overall reduction suppresses NOx to generate.
Finally, the effect of efficient burning, low emission, high reliability is reached.
Embodiment 1
As shown in figure 1, the beveled lip combustor D1=76.4mm of the present embodiment, H1=19mm, D2=75mm, H2=
4.8mm, D3=87mm, H3=3.05mm, D4=94mm, H4=6mm, H5=40mm, α 1=130～160 °, α 2=130～
150°。
The design through hydrokinetics calculation, compared with former machine double-lip mouth combustion chamber, under identical NOx emission,
The oil consumption of A100 operating modes reduces by 1.5%.
Claims (4)
1. a kind of diesel engine beveled lip combustor, it is characterised in that including combustion recess area, lip area and central boss
Area；Lip area beveling line is angled with piston-top surface；Pit area connects with lip area and protrudes to the outside of combustor；Center
Land areas connect and raised to combustion chamber with pit area, and central boss both sides inclined-plane is angled.
2. a kind of diesel engine beveled lip combustor according to claim 1, it is characterised in that the diameter in the pit area
D1=0.5～0.7D, cheats depth H1=0.13～0.17D, and wherein D is diesel engine cylinder diameter.
3. a kind of diesel engine beveled lip combustor according to claim 1, it is characterised in that the pit area and lip
Area joint reentrant diameter D2=0.55～0.65D, lip area and lip area beveling line joint diameter D3=0.65～
0.75D, lip area hole depth H2=0.035～0.045D, lip area piston-top surface diameter D4=0.75～0.85D, lip area is oblique
Tangent line depth H 3=0.024～0.035D, lip area chamfers line and piston-top surface angulation α 1=130～160 °, and wherein D is
Diesel engine cylinder diameter.
4. a kind of diesel engine beveled lip combustor according to claim 1, it is characterised in that the central boss area is convex
Platform depth H 4=0.04～0.055D, boss both sides inclined-plane angulation α 2=130～150 °, central boss both sides inclined-plane with it is recessed
Hole area intersection circular diameter D5=0.3～0.5D, wherein D are diesel engine cylinder diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710060512.0A CN106593621A (en) | 2017-01-25 | 2017-01-25 | Diesel engine beveled lip combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710060512.0A CN106593621A (en) | 2017-01-25 | 2017-01-25 | Diesel engine beveled lip combustion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106593621A true CN106593621A (en) | 2017-04-26 |
Family
ID=58586584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710060512.0A Pending CN106593621A (en) | 2017-01-25 | 2017-01-25 | Diesel engine beveled lip combustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106593621A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518287A (en) * | 2018-03-29 | 2018-09-11 | 天津中恒动力研究院有限公司 | Piston and engine assembly |
| CN108730064A (en) * | 2018-06-27 | 2018-11-02 | 天津内燃机研究所（天津摩托车技术中心） | Diesel engine piston combustion chamber |
| CN114837799A (en) * | 2022-06-07 | 2022-08-02 | 一汽解放汽车有限公司 | Diesel engine combustion chamber and diesel engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201100186Y (en) * | 2007-10-15 | 2008-08-13 | 山东华源莱动内燃机有限公司 | Diesel engine combustion room |
| DE102009025404A1 (en) * | 2009-06-16 | 2011-01-20 | Mtu Friedrichshafen Gmbh | Reciprocating piston for valve-controlled lifting cylinder diesel internal-combustion engine, has slope provided in transition from ring wall to piston head, where slope runs out against piston head and edge-laterally encloses ring wall |
| CN201786475U (en) * | 2010-08-03 | 2011-04-06 | 奇瑞汽车股份有限公司 | Head structure of piston for diesel engine |
| CN103696870A (en) * | 2013-12-09 | 2014-04-02 | 潍柴动力股份有限公司 | Cylinder piston of diesel engine and diesel engine applying same |
| DE102014005138A1 (en) * | 2014-04-08 | 2015-10-08 | Mtu Friedrichshafen Gmbh | Piston for an internal combustion engine |
| CN206681839U (en) * | 2017-01-25 | 2017-11-28 | 中国第一汽车股份有限公司 | A kind of diesel engine beveled lip combustion chamber |
-
2017
- 2017-01-25 CN CN201710060512.0A patent/CN106593621A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201100186Y (en) * | 2007-10-15 | 2008-08-13 | 山东华源莱动内燃机有限公司 | Diesel engine combustion room |
| DE102009025404A1 (en) * | 2009-06-16 | 2011-01-20 | Mtu Friedrichshafen Gmbh | Reciprocating piston for valve-controlled lifting cylinder diesel internal-combustion engine, has slope provided in transition from ring wall to piston head, where slope runs out against piston head and edge-laterally encloses ring wall |
| CN201786475U (en) * | 2010-08-03 | 2011-04-06 | 奇瑞汽车股份有限公司 | Head structure of piston for diesel engine |
| CN103696870A (en) * | 2013-12-09 | 2014-04-02 | 潍柴动力股份有限公司 | Cylinder piston of diesel engine and diesel engine applying same |
| DE102014005138A1 (en) * | 2014-04-08 | 2015-10-08 | Mtu Friedrichshafen Gmbh | Piston for an internal combustion engine |
| CN206681839U (en) * | 2017-01-25 | 2017-11-28 | 中国第一汽车股份有限公司 | A kind of diesel engine beveled lip combustion chamber |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518287A (en) * | 2018-03-29 | 2018-09-11 | 天津中恒动力研究院有限公司 | Piston and engine assembly |
| CN108730064A (en) * | 2018-06-27 | 2018-11-02 | 天津内燃机研究所（天津摩托车技术中心） | Diesel engine piston combustion chamber |
| CN114837799A (en) * | 2022-06-07 | 2022-08-02 | 一汽解放汽车有限公司 | Diesel engine combustion chamber and diesel engine |
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Application publication date: 20170426 |