CN108757208A - Solenoid overhead is close to cool down piston connecting rod unit around closed cycle - Google Patents
Solenoid overhead is close to cool down piston connecting rod unit around closed cycle Download PDFInfo
- Publication number
- CN108757208A CN108757208A CN201810859900.XA CN201810859900A CN108757208A CN 108757208 A CN108757208 A CN 108757208A CN 201810859900 A CN201810859900 A CN 201810859900A CN 108757208 A CN108757208 A CN 108757208A
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- China
- Prior art keywords
- solenoid
- piston
- oil
- connecting rod
- close
- 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
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/16—Pistons having cooling means
- F02F3/20—Pistons having cooling means the means being a fluid flowing through or along piston
- F02F3/22—Pistons having cooling means the means being a fluid flowing through or along piston the fluid being liquid
-
- 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
- F02F3/28—Other pistons with specially-shaped head
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
- F16C7/02—Constructions of connecting-rods with constant length
- F16C7/023—Constructions of connecting-rods with constant length for piston engines, pumps or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/22—Internal combustion engines
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
It is close around closed cycle cooling piston connecting rod unit that the invention discloses a kind of solenoid overheads, including：Piston only, piston pin and connecting rod, the top of the piston only has pit, the outer wall of pit is closely wound hollow solenoid, it is completely isolated for the high-temperature high-pressure fuel gas in the top and cylinder by piston only, solenoid oil duct is provided in solenoid, it is connected with lubricating oil in solenoid oil duct, the both ends of solenoid oil duct are respectively solenoid oil inlet and solenoid oil outlet, wherein, lubricating oil can be entered in solenoid oil duct by solenoid oil inlet, and the swirling flow in solenoid oil duct, flow out piston only using solenoid oil outlet.The solenoid overhead of the present invention is close, and top land can be isolated with the high-temperature high-pressure fuel gas in cylinder around closed cycle cooling piston connecting rod unit, it is ensured that piston obtains the cooling of sufficient intensity and steady and continuous in the case where internal combustion engine operates in high load capacity operating mode.
Description
Technical field
The present invention relates to technical field of internal combustion engines, live especially with regard to a kind of close cooled down around closed cycle of solenoid overhead
Fill in connection rod set.
Background technology
Currently, the reinforcing degree of reciprocating piston internal combustion engine is higher and higher with technological progress, the working medium burning in cylinder
Pressure and ignition temperature also increase therewith, and the working environment that piston is faced becomes more severe, especially in high temperature and pressure
Under environment and thermic load of the piston under high linear speed operation and under the influence of mechanical load so that how for piston to provide foot
Enough intensity and timely cooling become particularly important.
In general, being provided with the lubricating oil cooling duct of open type, in piston skirt bottom, piston boss in the inner cavity of piston crown
Neighbouring position is provided with the oil inlet of connection piston crown inner cavity, the Lubricating oil nozzle being mounted on engine cylinder block main oil gallery
Lubricating oil can be injected into the cold of piston crown inner cavity by i.e. usually said cooling spray hook by the oil inlet of piston skirt
But channel, piston can generate concussion heat convection in upper and lower operational process to the lubricating oil for entering piston crown inner cavity, from
And achieve the purpose that reduce piston especially piston crown temperature.
In addition, also there is internal combustion engine that lower head is provided with oil inlet, piston crown inner cavity is still open architecture,
There is provided jet stream by the Lubricating oil nozzle being arranged on small end of connecting rod closer with its distance, into piston crown inner cavity after play
The effect of cooling piston.
However, the prior art has the disadvantage that：
First, using the piston of Lubricating oil nozzle spray cooling mode, the oil beam jetted drop point of Lubricating oil nozzle is wanted
Ask high, shape, roughness, the size of processing and manufacturing and each link of Form and position error, assembly precision, packed and transported of jet hole inner cavity
All it is the key element for the oil beam jetted drop point for influencing Lubricating oil nozzle.The injection oil to Lubricating oil nozzle is needed during installation
Beam drop point carries out the target practice experiment of examination injection, extends the installation circulation time of engine, while the operating error for experiment of practicing shooting
The larger problem of each the cylinder piston intensity of cooling difference of engine for also resulting in.
Second, when piston runs to compression top center, the working medium in cylinder is compressed arrives burning expansion acting again, working medium combustion
It burns heat release and directly acts on piston, temperature highest of the piston in compression top center also needs most to obtain the cooling of sufficient intensity,
And at this point, the Lubricating oil nozzle on main oil gallery is farthest apart from piston, there are straight line retentivities for the oily beam of Lubricating oil nozzle injection
It can decline, oily beam drop point is influenced to deviate by factors such as complete machine jerks, and piston crown inner cavity cooling duct is in addition
The machine oil of open architecture, entrance is difficult to fill with entire cooling inner cavity, and heat convection scarce capacity causes under piston cooling capacity
Drop, when especially internal combustion engine works under high loads, piston is easy to generate failure of removal associated therewith because of high temperature.
Third installs the structure of Lubricating oil nozzle on small end of connecting rod, and lubricating oil is by being arranged on small end of connecting rod bearing shell
Groove enter Lubricating oil nozzle, because the trench cross section on microcephaly's bearing shell cannot be arranged too big, cause to enter lubricating oil and spray
The pressure of the lubricants capacity of mouth will not be too big, and the lubricating oil cooling bore passages below piston crown are open architectures,
The lubricating oil of entrance is not enough to fill up cooling inner cavity, and heat convection is ineffective, especially when internal combustion engine works under high loads,
The cooling capacity of piston is undesirable, and there are high temperature failure risks for piston.
4th：No matter using piston skirt injection, above the cooling that oils is sprayed in oil cooled scheme or piston crown lower section
Scheme, be open architecture, lubricating oil is difficult to fill inner cavity and realize complete heat convection after being injected into, so in height
It is easy to happen piston crown materials hot deformation under load condition and burns and melts problem.
Being disclosed in the information of the background technology part, it is only intended to increase understanding of the overall background of the invention, without answering
It has been the prior art well known to persons skilled in the art when being considered as recognizing or imply that the information is constituted in any form.
Invention content
It is close around closed cycle cooling piston connecting rod unit that the purpose of the present invention is to provide a kind of solenoid overheads, can incite somebody to action
Top land is isolated with the high-temperature high-pressure fuel gas in cylinder, good cooling results.
To achieve the above object, the present invention provides a kind of solenoid overhead it is close around closed cycle cool down piston connecting rod unit,
The solenoid overhead is close to include around closed cycle cooling piston connecting rod unit：Piston only, piston pin and connecting rod, the piston only
There is pit, the outer wall of pit to be closely wound hollow solenoid at top, and being used for will be in the top and cylinder of piston only
High-temperature high-pressure fuel gas is completely isolated, and solenoid oil duct is provided in solenoid, and lubricating oil, solenoid oil are connected in solenoid oil duct
The both ends in road are respectively solenoid oil inlet and solenoid oil outlet, wherein lubricating oil can enter spiral shell by solenoid oil inlet
In spool oil duct, and the swirling flow in solenoid oil duct, flow out piston only using solenoid oil outlet.
In a preferred embodiment, solenoidal canoe be from center to outside be circumferentially closely wound, and
The outer wall of solenoid and pit is closely connected as one.
In a preferred embodiment, the top center of piston only is provided with vertical channel, channel and piston pin
Bore is connected.
In a preferred embodiment, solenoidal solenoid oil outlet end can extend into channel.
In a preferred embodiment, solenoid oil inlet is connected with cooling chamber oil discharge passage.
In a preferred embodiment, it is provided with connecting rod oil line in connecting rod, piston pin oil inlet is provided in piston pin,
Inner-cooling oil recess is provided in piston only, lubricating oil enters by connecting rod oil line in connecting rod, enters connecting rod by bearing shell oil inlet
In the bearing shell annular groove oil duct of microcephaly's bearing shell, entered in piston pin oil inlet by bearing shell oil outlet, using the horizontal oil duct of piston pin,
Piston pin oil outlet enters in inner-cooling oil recess, and the lubricating oil in inner-cooling oil recess then enters solenoid by cooling chamber oil discharge passage
Oil inlet, so that lubricating oil circulating cooling in solenoid oil duct.
In a preferred embodiment, solenoid selects material more heat safe than piston only.
In a preferred embodiment, solenoidal cross section is round or polygon.
Compared with prior art, solenoid overhead according to the present invention is close has such as around closed cycle cooling piston connecting rod unit
Lower advantage：
(1) top land is provided with the solenoid with the close-connected inner hollow of top land, using enclosed lubricating oil
Compulsory circulative cooling avoids cooling capacity deficiency and oil beam jetted drop point hardly possible that traditional lubrication oil burner nozzle open type jet band comes
The problem of control.
(2) piston crown can obtain stablizing lasting high intensity cooling, avoid the piston crown under internal combustion engine high load capacity
The problem of temperature distortion scuffing of cylinder bore or even piston crown burning are melted.
(3) because using enclosed lubrication, heat convection is efficient, and flow of lubrication used is little, in internal combustion
Machine, which operates under middle and slow speed of revolution and the higher operating mode of load, to be remained able to provide high intensity cooling to piston.
(4) top land can be isolated with the high-temperature high-pressure fuel gas in cylinder for the solenoid being closely wound, especially spiral shell
After spool uses material more heat safe than piston only, the reinforcing degree of engine can be allowed to mention and be obviously improved, fuel oil spray
Injection pressure is further promoted, and the working medium combustion pressure and temperature in cylinder allow higher, improve the thermal efficiency, to bring more
Good fuel economy, emission performance and whole aircraft reliability.
Description of the drawings
Fig. 1 is the close main view that piston connecting rod unit is cooled down around closed cycle of solenoid overhead according to an embodiment of the present invention
Figure.
Fig. 2 is the close vertical view that piston connecting rod unit is cooled down around closed cycle of solenoid overhead according to an embodiment of the present invention
Figure.
Fig. 3 is partial sectional views of the Fig. 2 along the directions A-A.
Fig. 4 is partial sectional views of the Fig. 2 along the directions B-B.
Fig. 5 is partial enlarged views of the Fig. 2 along the directions A-A.
Main appended drawing reference explanation：
1- piston onlies, 2- piston pins, 3- connecting rods, 4- connecting rod oil lines, 11- solenoids, 12- solenoid oil ducts, 13- helicals
Pipe oil outlet, 14- solenoid oil inlets, 15- cooling chamber oil discharge passages.
Specific implementation mode
Below in conjunction with the accompanying drawings, the specific implementation mode of the present invention is described in detail, it is to be understood that the guarantor of the present invention
Shield range is not restricted by specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " comprising " or its change
It changes such as "comprising" or " including " etc. and will be understood to comprise stated element or component, and do not exclude other members
Part or other component parts.
As shown in Figures 1 to 5, solenoid overhead according to the preferred embodiment of the present invention is close cools down piston around closed cycle
Connection rod set includes：The top of piston only 1, piston pin 2 and connecting rod 3, the piston only 1 has pit, the outer wall of pit close
It is wound with hollow solenoid 11, for completely isolated, the helical by the high-temperature high-pressure fuel gas in the top and cylinder of piston only 1
It is provided with solenoid oil duct 12 in pipe 11, is connected in solenoid oil duct 12 with certain pressure lubricating oil, solenoid oil duct 12
Both ends are respectively solenoid oil inlet 14 and solenoid oil outlet 13, wherein lubricating oil can be entered by solenoid oil inlet 14
In solenoid oil duct 12, and the swirling flow in solenoid oil duct 12, piston face high temperature heat is taken away, piston is played cold
But it acts on, flows out piston only 1 using solenoid oil outlet 13.
In said program, the canoe of solenoid 11 is circumferentially is closely wound from center to outside, and solenoid 11
It is closely connected as one with the outer wall of pit.The top center of piston only 1 is provided with vertical channel, channel and piston boss
Hole is connected.The solenoid oil outlet end of solenoid 11 can extend into channel.Solenoid oil inlet 14 is fuel-displaced logical with cooling chamber
Road 15 is connected.
As shown in Figures 3 and 4, it is provided with connecting rod oil line 4 in connecting rod 3, piston pin oil inlet 7, piston are provided in piston pin 2
Inner-cooling oil recess 10 is provided in ontology 1, lubricating oil enters by connecting rod oil line 4 in connecting rod, enters by bearing shell oil inlet 16 and connects
In the bearing shell annular groove oil duct 17 of bar microcephaly bearing shell 18, then entered in piston pin oil inlet 18 by bearing shell oil outlet 16, then pass through
It crosses in the horizontal oil duct 5 of piston pin, the entrance inner-cooling oil recess 10 of piston pin oil outlet 6, it is also right later that lubricating oil is filled with inner-cooling oil recess 10
Inner cavity surrounding structure produces cooling effect, and the lubricating oil in inner-cooling oil recess 10 then enters spiral shell by cooling chamber oil discharge passage 15
Spool oil inlet 14, so that lubricating oil circulating cooling in solenoid oil duct 12.Because of the lubrication oil cooling of entire internal piston
But it is pressure forced feed lubrication, so heat convection effect is good, cooling efficiency is high, and the smaller flow of use and higher flow velocity are real
The high intensity cooling to piston crown and middle part is showed.
Solenoid selects material more heat safe than piston only.The reinforcing degree of engine can be allowed to mention significantly to carry
It rising, fuel-injection pressure is further promoted, and the working medium combustion pressure and temperature in cylinder allow higher, improve the thermal efficiency,
To bring better fuel economy, emission performance and whole aircraft reliability.In a preferred embodiment, solenoid
Cross section can be round or polygon.
The solenoid overhead of the present invention is close to be passed through around closed cycle cooling piston connecting rod unit to being passed through in solenoid oil duct 12
Lubricating oil with certain pressure forces closed cycle flowing, and preferable cooling heat insulation is generated to piston crown, meanwhile, spiral shell
Spool is closely wound mode because using, can be completely isolated by the high-temperature high-pressure fuel gas in the head and cylinder of piston only,
Especially solenoid will be substantially reduced the head thermal deformation of piston only even using after material more heat safe than piston only
High temperature sintered improves piston use intensity and service life.
In a preferred embodiment, the preparation process concrete operations of piston only of the invention are：First with it is prefabricated
Be closely wound solenoid at the top of standby piston only at the top of the identical piston only of pit shape, canoe be from center to
Outside is circumferentially closely wound, and is removed the solenoid wound later, the solenoid wound is placed in casting mould, so
The casting technique for carrying out piston only afterwards, to which the outer wall for realizing solenoid and the pit at the top of the piston only for preparing is tight
It is close to be connected as one.
The description of the aforementioned specific exemplary embodiment to the present invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining the specific principle of the present invention and its actually answering
With so that those skilled in the art can realize and utilize the present invention a variety of different exemplary implementation schemes and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (8)
1. a kind of solenoid overhead is close to cool down piston connecting rod unit around closed cycle, close cooled down around closed cycle of the solenoid overhead is lived
Filling in connection rod set includes：Piston only, piston pin and connecting rod, which is characterized in that the top of the piston only has pit, described
The outer wall of pit is closely wound hollow solenoid, for firing the high temperature and pressure in the top and cylinder of the piston only
Gas is completely isolated, and solenoid oil duct is provided in the solenoid, lubricating oil, the solenoid are connected in the solenoid oil duct
The both ends of oil duct are respectively solenoid oil inlet and solenoid oil outlet, wherein the lubricating oil can by the solenoid into
Hydraulic fluid port enters in the solenoid oil duct, and the swirling flow in the solenoid oil duct, using the solenoid oil outlet
Flow out the piston only.
2. solenoid overhead as described in claim 1 is close to cool down piston connecting rod unit around closed cycle, which is characterized in that the spiral shell
The canoe of spool is circumferentially to be closely wound from center to outside, and the outer wall of the solenoid and the pit closely connects
It is connected in one.
3. solenoid overhead as claimed in claim 2 is close to cool down piston connecting rod unit around closed cycle, which is characterized in that the work
The top center of plug ontology is provided with vertical channel, and the channel is connected with piston pin bore.
4. solenoid overhead as claimed in claim 2 is close to cool down piston connecting rod unit around closed cycle, which is characterized in that the spiral shell
The solenoid oil outlet end of spool can extend into the channel.
5. solenoid overhead as described in claim 1 is close to cool down piston connecting rod unit around closed cycle, which is characterized in that the spiral shell
Spool oil inlet is connected with cooling chamber oil discharge passage.
6. solenoid overhead as claimed in claim 5 is close to cool down piston connecting rod unit around closed cycle, which is characterized in that the company
It is provided with connecting rod oil line in bar, piston pin oil inlet is provided in the piston pin, interior cold oil is provided in the piston only
Chamber, the lubricating oil enter by the connecting rod oil line in the connecting rod, enter small end of connecting rod bearing shell by bearing shell oil inlet
In bearing shell annular groove oil duct, entered in the piston pin oil inlet by bearing shell oil outlet, using the horizontal oil duct of piston pin, piston pin
Oil outlet enters in the inner-cooling oil recess, and the lubricating oil in inner-cooling oil recess then enters the helical by cooling chamber oil discharge passage
Pipe oil inlet, so that lubricating oil circulating cooling in the solenoid oil duct.
7. solenoid overhead as described in claim 1 is close to cool down piston connecting rod unit around closed cycle, which is characterized in that the spiral shell
Spool selects material more heat safe than the piston only.
8. solenoid overhead as described in claim 1 is close to cool down piston connecting rod unit around closed cycle, which is characterized in that the spiral shell
The cross section of spool is round or polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810859900.XA CN108757208B (en) | 2018-08-01 | 2018-08-01 | Close-wound closed circulation cooling piston connecting rod set with top solenoid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810859900.XA CN108757208B (en) | 2018-08-01 | 2018-08-01 | Close-wound closed circulation cooling piston connecting rod set with top solenoid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108757208A true CN108757208A (en) | 2018-11-06 |
| CN108757208B CN108757208B (en) | 2020-01-14 |
Family
ID=63968497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810859900.XA Active CN108757208B (en) | 2018-08-01 | 2018-08-01 | Close-wound closed circulation cooling piston connecting rod set with top solenoid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108757208B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145406A (en) * | 2019-05-23 | 2019-08-20 | 广州柴油机厂股份有限公司 | A kind of gas engine piston oscillation cooling structure |
| CN111412055A (en) * | 2020-03-27 | 2020-07-14 | 河北科技大学 | Piston cooling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4363293A (en) * | 1980-05-30 | 1982-12-14 | Societe D'etudes De Machines Thermiques S.E.M.T. | Piston for a reciprocating piston machine, particularly an internal combustion engine |
| JPS60116843A (en) * | 1983-11-28 | 1985-06-24 | Akita:Kk | Structure of piston of internal-combustion engine |
| CN101002013A (en) * | 2004-08-11 | 2007-07-18 | 玛勒国际有限公司 | Lightweight piston comprising heat pipes |
| CN201714476U (en) * | 2010-06-14 | 2011-01-19 | 浙江吉利汽车研究院有限公司 | Cooling structure for engine piston |
| US20120279390A1 (en) * | 2011-05-05 | 2012-11-08 | Sascha-Oliver Boczek | Method for the production of a piston |
| US20120325166A1 (en) * | 2011-05-25 | 2012-12-27 | Helmut Kollotzek | Casting core for forming a cooling channel in a piston |
| CN103307903A (en) * | 2012-03-07 | 2013-09-18 | 晋惠冷却机械股份有限公司 | Spiral winding method for cooling pipe disks of cooling tower |
| CN108204758A (en) * | 2017-12-23 | 2018-06-26 | 江健良 | A kind of heat pipe energy drive system |
-
2018
- 2018-08-01 CN CN201810859900.XA patent/CN108757208B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4363293A (en) * | 1980-05-30 | 1982-12-14 | Societe D'etudes De Machines Thermiques S.E.M.T. | Piston for a reciprocating piston machine, particularly an internal combustion engine |
| JPS60116843A (en) * | 1983-11-28 | 1985-06-24 | Akita:Kk | Structure of piston of internal-combustion engine |
| CN101002013A (en) * | 2004-08-11 | 2007-07-18 | 玛勒国际有限公司 | Lightweight piston comprising heat pipes |
| CN201714476U (en) * | 2010-06-14 | 2011-01-19 | 浙江吉利汽车研究院有限公司 | Cooling structure for engine piston |
| US20120279390A1 (en) * | 2011-05-05 | 2012-11-08 | Sascha-Oliver Boczek | Method for the production of a piston |
| US20120325166A1 (en) * | 2011-05-25 | 2012-12-27 | Helmut Kollotzek | Casting core for forming a cooling channel in a piston |
| CN103307903A (en) * | 2012-03-07 | 2013-09-18 | 晋惠冷却机械股份有限公司 | Spiral winding method for cooling pipe disks of cooling tower |
| CN108204758A (en) * | 2017-12-23 | 2018-06-26 | 江健良 | A kind of heat pipe energy drive system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145406A (en) * | 2019-05-23 | 2019-08-20 | 广州柴油机厂股份有限公司 | A kind of gas engine piston oscillation cooling structure |
| CN110145406B (en) * | 2019-05-23 | 2024-05-17 | 广州柴油机厂股份有限公司 | Piston oscillation cooling structure of internal combustion engine |
| CN111412055A (en) * | 2020-03-27 | 2020-07-14 | 河北科技大学 | Piston cooling device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108757208B (en) | 2020-01-14 |
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Effective date of registration: 20230117 Address after: No.88 Tianqiao West Road, Yulin City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Yuchai Ship Electric Power Co.,Ltd. Address before: 537005 No. 88 flyover West Road, the Guangxi Zhuang Autonomous Region, Yulin Patentee before: Guangxi Yuchai Machinery Co.,Ltd. |
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