CN110118131A - Piston head - Google Patents
Piston head Download PDFInfo
- Publication number
- CN110118131A CN110118131A CN201910436609.6A CN201910436609A CN110118131A CN 110118131 A CN110118131 A CN 110118131A CN 201910436609 A CN201910436609 A CN 201910436609A CN 110118131 A CN110118131 A CN 110118131A
- Authority
- CN
- China
- Prior art keywords
- piston head
- groove
- pressure release
- oil ring
- closure gasket
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F2003/0007—Monolithic pistons; One piece constructions; Casting of pistons
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The present invention relates to a kind of piston heads, including piston head ontology, the circumferential side wall of the piston head ontology is equipped at least two for installing the closure gasket groove of sealing ring, there is spacing distance, one pressure release of setting cuts oil ring groove on the circumferential side wall of the piston head ontology between at least two adjacent closure gasket grooves between adjacent seals annular groove.The configuration of the present invention is simple, preparation cost are low, can effectively reduce lubrication oil consumption, improve the greasy property of piston and cylinder sleeve, meanwhile, it prevents lubricating oil from entering combustion chamber and generates carbon deposit, prevent high-temperature high-pressure fuel gas from scurrying into crankcase, avoid crankcase explosion risk.
Description
Technical field
The present invention relates to field of internal combustion engine, in particular to a kind of piston head.
Background technique
Piston is reciprocating parts in IC engine cylinder block, and sealing is equipped in the circumferential wall of piston head
Ring to prevent high temperature, high-pressure gas from scurrying into crankcase, while preventing machine oil from scurrying into combustion chamber.However, in high temperature, high pressure, high-strength
It spends under working environment, during the work time, a large amount of lubricating oil can scurry into combustion chamber to the piston of most of internal combustion engine on the market at present
Burning causes piston combustion bowl carbon distribution, lubricating oil exorbitant expenditure, and is easy to cause not tight closed throttle, intake valve or exhaust valve leakage
Gas, more serious generation pinking, causes internal combustion engine reliability to reduce, and seriously affects internal combustion engine normal work.Meanwhile a large amount of combustion gas
It can scurry into crankcase by the gap between sealing ring and cylinder wall, crankcase pressure is caused to increase, and have the wind of explosion
Danger.
Summary of the invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of piston head, structure is simple, preparation cost
It is low, it can effectively reduce lubrication oil consumption, improve the greasy property of piston and cylinder sleeve, meanwhile, prevent lubricating oil from entering combustion chamber production
Raw carbon deposit, prevents high-temperature high-pressure fuel gas from scurrying into crankcase, avoids crankcase explosion risk.
The technical scheme is that a kind of piston head, including piston head ontology, the circumferential side wall of the piston head ontology
At least two are equipped with for installing the closure gasket grooves of sealing ring, there is spacing distance between adjacent seals annular groove, at least two
One pressure release is set on the circumferential side wall of the piston head ontology between adjacent closure gasket groove and cuts oil ring groove.
It is identical as the distance between two adjacent closure gasket grooves that the pressure release cuts oil ring groove.
The pressure release cuts the oil ring groove dovetail groove narrow for slot opening, slot bottom.
The angle that the pressure release is cut between two cell wall of oil ring groove is 60-120 °.
The groove depth that the pressure release cuts oil ring groove is the 1/90-1/110 of piston head ontology radius, and pressure release cuts the notch of oil ring groove
The 1/4-3/4 of width spacing between two neighboring closure gasket groove.
The groove depth that the pressure release cuts oil ring groove is the 1/100 of piston head ontology radius, and pressure release cuts the width of rebate of oil ring groove
The 1/2 of spacing between two neighboring closure gasket groove.
The sealing ring is compression ring or oil ring.
It has the advantages that by adopting the above technical scheme
1, inventive piston head, at least two closure gasket grooves of setting are for installing sealing ring, wherein close to top land
Sealing ring and cylinder sleeve cooperate, for preventing most of high temperature, high-pressure gas to be transferred to by gap between piston and cylinder sleeve
Crankcase, wherein the sealing ring and cylinder sleeve close to piston skirt cooperate, for preventing most of lubricating oil by piston and cylinder sleeve
Between gap scurry into combustion chamber.It is arranged on the circumferential side wall of piston head ontology between at least two adjacent closure gasket grooves
One pressure release cuts oil ring groove, when a small amount of high temperature, high-pressure gas pass through the sealing ring close to top land, leaks to pressure release and cuts oil ring
When slot, since pressure release cuts the space formed between oil ring groove and cylinder sleeve compared to the space pole between piston circumferential side wall and cylinder sleeve
Degree expands, and the high pressure of leakage, high-temperature fuel gas cut pressure in oil ring groove in pressure release and extremely reduce, and loses and further scurries into crankcase
Power effectively prevents the risk that crankcase pressure is increased or exploded.When lubricating oil pass through close to piston skirt sealing ring,
Oil ring groove retention is cut by pressure release, collects and is cut in oil ring groove in pressure release, avoid lubricating oil from further scurrying into and cause carbon deposit in combustion chamber,
Lubrication oil consumption is reduced, meanwhile, it collects and generates lubricating action in the position in the lubricating oil that pressure release is cut in oil ring groove, it is also further
Improve the greasy property between piston and cylinder sleeve.
2, pressure release section oil ring groove is identical as the distance between two adjacent closure gasket grooves, guarantees that the installation of sealing ring is empty
Between, meanwhile, meet the buffer requirement of high pressure, high-temperature fuel gas pressure release.
3, pressure release cuts the oil ring groove dovetail groove narrow for slot opening, slot bottom, and processing pressure release is facilitated to cut oil ring groove, meanwhile, meet
The demand of high pressure, high-temperature fuel gas pressure release buffering and oil lubrication range.
4, pressure release cuts the 1/90-1/110 that the groove depth of oil ring groove is piston head ontology radius, and pressure release cuts the slot opening of oil ring groove
The 1/4-3/4 for spending the spacing between two neighboring closure gasket groove makes pressure release cut oil ring groove under the premise of meeting piston head intensity
There is enough spaces between cylinder sleeve, meet high temperature, high-pressure gas buffering pressure release, and collect the demand of lubricating oil.
It is further described with reference to the accompanying drawings and detailed description.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is enlarged drawing at A in Fig. 1.
In attached drawing, 1 is piston head ontology, and 2 be closure gasket groove, and 3 cut oil ring groove for pressure release.
Specific embodiment
It referring to Fig. 1 and Fig. 2, is a kind of specific embodiment of piston head.Piston head includes piston head ontology 1, the present embodiment
In, the diameter of piston head ontology is 208mm, processes to be formed using the material of gas engine field routine.The piston head sheet
The circumferential side wall of body 1 is equipped at least two for installing the closure gasket groove 2 of sealing ring, between having between adjacent seals annular groove 2
Gauge is from the present embodiment, the quantity of closure gasket groove is three, is followed successively by the first closure gasket groove, the second sealing ring from top to bottom
Slot, third closure gasket groove, three closure gasket grooves are processed as the closure gasket groove of gas engine field conventional shape, are used to pacify
Compression ring is filled, according to actual needs, it can also be used to oil ring be installed, the distance between the first closure gasket groove, second closure gasket groove are
16mm.One pressure release is set on the circumferential side wall of the piston head ontology 1 between the first closure gasket groove, the second closure gasket groove and cuts oil
Multiple closure gasket grooves can also be arranged according to actual needs in annular groove 3 on the circumferential side wall of piston head, corresponding close for installing
Then pressure release is arranged between the multipair closure gasket groove of arbitrary neighborhood and cuts oil ring groove for seal ring, in the present embodiment, which is cut
Oil ring groove 3 is identical as the distance between the first closure gasket groove, the second closure gasket groove, that is, the pressure release cuts oil ring groove setting the
The centre of one closure gasket groove, the second closure gasket groove, pressure release cut the dovetail groove narrow for slot opening, slot bottom of oil ring groove 3, and pressure release cuts oil ring
Angle between 3 liang of cell walls of slot is 60-120 °, and the groove depth that pressure release cuts oil ring groove 3 is the 1/90-1/ of 1 radius of piston head ontology
110, pressure release cuts the 1/4-3/4 of width of rebate spacing between two neighboring closure gasket groove 2 of oil ring groove 3, and preferably pressure release is cut
The groove depth of oil ring groove 3 is the 1/100 of 1 radius of piston head ontology, and the width of rebate that pressure release cuts oil ring groove 3 is two neighboring sealing ring
The 1/2 of spacing between slot 2, specifically, the groove depth that pressure release cuts oil ring groove is 1mm, the width of rebate that pressure release cuts oil ring groove is 8mm,
Slot bottom width is 6mm, that is, the angle that pressure release is cut between two cell walls of oil ring groove is 90 °.
The operation principle of the present invention is that installing the sealing ring (compression ring) of adaptation, piston head and steel-jacket gap in closure gasket groove
Cooperation, the gap between compression ring sealing piston head and cylinder sleeve.When a small amount of high temperature, high-pressure gas pass through the sealing close to top land
Ring, when leaking to pressure release section oil ring groove, since pressure release cuts the space formed between oil ring groove and cylinder sleeve compared to piston circumference
Space between wall and cylinder sleeve extremely expands, and the high pressure of leakage, high-temperature fuel gas cut pressure in oil ring groove in pressure release and extremely reduce, and loses
The power for further scurrying into crankcase is removed, the risk that crankcase pressure is increased or exploded is effectively prevented.It is leaned on when lubricating oil passes through
The sealing ring of nearly piston skirt cuts oil ring groove retention by pressure release, collects and cut in oil ring groove in pressure release, lubricating oil is avoided further to alter
Enter and cause carbon deposit in combustion chamber, reduces lubrication oil consumption, meanwhile, it collects and is produced in the position in the lubricating oil that pressure release is cut in oil ring groove
Raw lubricating action, also further improves the greasy property between piston and cylinder sleeve.
Claims (7)
1. a kind of piston head, it is characterised in that: including piston head ontology (1), set on the circumferential side wall of the piston head ontology (1)
There are at least two closure gasket grooves (2) for being used to install sealing ring, there is spacing distance between adjacent seals annular groove (2),
One pressure release is set on the circumferential side wall of the piston head ontology (1) between at least two adjacent closure gasket grooves (2) and cuts oil
Annular groove (3).
2. piston head according to claim 1, it is characterised in that: the pressure release cuts oil ring groove (3) and adjacent two are close
The distance between seal ring slot (2) is identical.
3. piston head according to claim 1, it is characterised in that: it is narrow for slot opening, slot bottom that the pressure release cuts oil ring groove (3)
Dovetail groove.
4. piston head according to claim 3, it is characterised in that: the pressure release cuts the folder between (3) two cell wall of oil ring groove
Angle is 60-120 °.
5. piston head according to claim 1, it is characterised in that: the groove depth that the pressure release cuts oil ring groove (3) is piston head
The 1/90-1/110 of ontology (1) radius, between the width of rebate of pressure release section oil ring groove (3) is between two neighboring closure gasket groove (2)
Away from 1/4-3/4.
6. piston head according to claim 5, it is characterised in that: the groove depth that the pressure release cuts oil ring groove (3) is piston head
The 1/100 of ontology (1) radius, pressure release cut oil ring groove (3) width of rebate between two neighboring closure gasket groove (2) spacing 1/
2。
7. piston head according to claim 1, it is characterised in that: the sealing ring is compression ring or oil ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910436609.6A CN110118131A (en) | 2019-05-23 | 2019-05-23 | Piston head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910436609.6A CN110118131A (en) | 2019-05-23 | 2019-05-23 | Piston head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110118131A true CN110118131A (en) | 2019-08-13 |
Family
ID=67523096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910436609.6A Pending CN110118131A (en) | 2019-05-23 | 2019-05-23 | Piston head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110118131A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901364A (en) * | 2021-02-02 | 2021-06-04 | 马勒汽车技术（中国）有限公司 | Piston for engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010020491A1 (en) * | 2010-05-14 | 2011-11-17 | Man Diesel & Turbo, Filial Af Man Diesel & Turbo Se, Tyskland | Piston for reciprocating internal combustion engine, particularly two-stroke- large diesel engine, has piston ring that is formed as gas-tight piston ring without leakage and is removed from work space |
| CN202690242U (en) * | 2012-06-21 | 2013-01-23 | 上海通用汽车有限公司 | Piston ring shore structure and engine piston provided with same |
| CN104454226A (en) * | 2014-12-12 | 2015-03-25 | 陶凝 | Engine piston assembly |
| CN204344301U (en) * | 2014-12-12 | 2015-05-20 | 陶凝 | A kind of engine piston |
| CN106050465A (en) * | 2016-07-04 | 2016-10-26 | 华晨汽车集团控股有限公司 | Combined type piston |
-
2019
- 2019-05-23 CN CN201910436609.6A patent/CN110118131A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010020491A1 (en) * | 2010-05-14 | 2011-11-17 | Man Diesel & Turbo, Filial Af Man Diesel & Turbo Se, Tyskland | Piston for reciprocating internal combustion engine, particularly two-stroke- large diesel engine, has piston ring that is formed as gas-tight piston ring without leakage and is removed from work space |
| CN202690242U (en) * | 2012-06-21 | 2013-01-23 | 上海通用汽车有限公司 | Piston ring shore structure and engine piston provided with same |
| CN104454226A (en) * | 2014-12-12 | 2015-03-25 | 陶凝 | Engine piston assembly |
| CN204344301U (en) * | 2014-12-12 | 2015-05-20 | 陶凝 | A kind of engine piston |
| CN106050465A (en) * | 2016-07-04 | 2016-10-26 | 华晨汽车集团控股有限公司 | Combined type piston |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901364A (en) * | 2021-02-02 | 2021-06-04 | 马勒汽车技术（中国）有限公司 | Piston for engine |
| CN112901364B (en) * | 2021-02-02 | 2022-03-29 | 马勒汽车技术（中国）有限公司 | Piston for engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190813 |
|
| RJ01 | Rejection of invention patent application after publication |