CN110700929A - Diesel engine piston cooling lubricating oil conveying device - Google Patents
Diesel engine piston cooling lubricating oil conveying device Download PDFInfo
- Publication number
- CN110700929A CN110700929A CN201911165092.8A CN201911165092A CN110700929A CN 110700929 A CN110700929 A CN 110700929A CN 201911165092 A CN201911165092 A CN 201911165092A CN 110700929 A CN110700929 A CN 110700929A
- Authority
- CN
- China
- Prior art keywords
- magnetic ring
- guide sleeve
- small end
- oil
- oil guide
- 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
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/06—Arrangements for cooling pistons
- F01P3/10—Cooling by flow of coolant through pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P2003/006—Liquid cooling the liquid being oil
Abstract
The invention discloses a diesel engine piston cooling lubricating oil conveying device which comprises an oil guide sleeve, an elastic retainer ring for a shaft, an upper magnetic ring and a lower magnetic ring, wherein the upper end of the oil guide sleeve is a circular tube, and the lower end of the oil guide sleeve radially extends to form a funnel; the big end of the round pipe is vertically embedded into the central platform at the upper part of the piston. The upper magnetic ring and the lower magnetic ring are arranged oppositely in the same pole and are respectively sleeved in a cavity between the excircle of the small end of the circular tube of the oil guide sleeve and the wall of the stepped hole, so that the lower opening of the funnel of the oil guide sleeve is abutted against the excircle surface of the small end of the connecting rod of the diesel engine and covers the radial oil hole of the small end of the connecting rod. The upper side surface of the upper magnetic ring is abutted against the lower end surface of the upper end of the stepped hole, and the lower side surface of the lower magnetic ring is abutted against the stepped surface in the middle of the circular tube. The invention ensures that cooling lubricating oil conveyed from the oil guide sleeve enters the piston top and between the small end of the connecting rod and the piston pin through the oil guide sleeve and the radial oil hole of the small end of the connecting rod, and the piston top and the piston pin are fully cooled. The reliability of the invention is improved, and the diesel engine can work normally for a long time.
Description
Technical Field
The invention relates to a cooling device of a diesel engine, in particular to a cooling oil conveying device which is used for connecting a piston top and a small connecting rod head to enable lubricating oil to smoothly enter the piston top and cool the piston and the small connecting rod head, and belongs to the technical field of internal combustion engines.
Background
The diesel oil mixed gas released by the diesel engine violently expands during self-combustion, the explosive force generated by the diesel oil mixed gas pushes the piston to do work downwards, and the power is transmitted out through the rotating crankshaft, so that the temperature in the cylinder can reach 1900-2000 ℃, and the piston moving up and down at high speed in the cylinder has large heat load and very high temperature. To reduce the piston crown temperature, the circulating oil needs to be delivered to cool the piston. At present, a piston top lubricating oil cooling device is mainly of a sealed structure and a non-sealed structure, lubricating oil cannot effectively enter a piston top through the piston top lubricating oil cooling device of the non-sealed structure, and the cooling effect is poor. The sealing structure compresses the oil guide sleeve on the small end of the connecting rod by utilizing the reset elastic force generated after the spring is compressed, so that lubricating oil enters the small end of the connecting rod and the surface of the piston pin through the radial oil hole of the small end of the connecting rod to cool the inner cavity of the piston top. The spring is stressed unevenly in the motion process of the piston, so that the oil guide sleeve can scratch the small end of the connecting rod sometimes. The spring can wear and tear the oil guide sleeve after long-term use, and the spring self also has the risk of possible fracture because of wearing and tearing, seriously influences the normal work of diesel engine.
Disclosure of Invention
The invention aims to provide a diesel engine piston cooling oil conveying device, which effectively solves the problem of low reliability of a spring of a piston top lubricating oil cooling device with a sealed structure.
The purpose of the invention is realized by the following technical scheme:
a kind of diesel engine piston cooling lubricating oil conveying appliance, including leading the oil jacket, axle uses the elastic retaining ring, upper magnetic ring and lower magnetic ring, lead the upper end of oil jacket to be the round tube of the stepped shaft structure, lead the lower end of oil jacket and extend radially to become the funnel, lead the round tube big end of the oil jacket to imbed in the lower part of stepped hole of the upper portion central terrace of piston vertically, and with the lower part clearance fit of stepped hole; the end head of the small end of the circular tube extends out of the central platform at the upper part of the piston, and the lower opening of the funnel of the oil guide sleeve is abutted against the outer circular surface of the small end of the connecting rod of the diesel engine and covers the radial oil hole at the small end of the connecting rod; the shaft is fixed on the small end of the circular tube of the oil guide sleeve by an elastic retainer ring; the upper magnetic ring and the lower magnetic ring are oppositely arranged in the same pole and are respectively sleeved in a cavity between the excircle of the small end of the circular tube of the oil guide sleeve and the wall of the stepped hole; the upper side surface of the upper magnetic ring is abutted against the lower end surface of the upper end of the stepped hole, and the lower side surface of the lower magnetic ring is abutted against the stepped surface in the middle of the circular tube.
The object of the invention is further achieved by the following technical measures.
Furthermore, the excircle of the upper magnetic ring is in clearance fit with the step hole, and a clearance delta 1 is reserved between the inner hole of the upper magnetic ring and the excircle of the small end of the circular tube; gaps delta 2 are reserved between the excircle of the lower magnetic ring and the stepped hole and between the inner hole of the lower magnetic ring and the excircle of the small end of the circular tube, and delta 1 is larger than delta 2.
Furthermore, the thickness of the upper magnetic ring is equal to that of the lower magnetic ring, and the ratio H1/L of the thickness H1 of the upper magnetic ring or the thickness H1 of the lower magnetic ring to the height L of the cavity is = 0.15-0.17.
Furthermore, the upper magnetic ring and the lower magnetic ring are both made of neodymium iron boron permanent magnets.
The upper magnetic ring and the lower magnetic ring are of structures with opposite homopolarity, and the elastic force generated when the spring is pressed and deformed is replaced by the magnetic field force of homopolarity repulsion of the permanent magnet between the upper magnetic ring and the lower magnetic ring. Along with the change of the distance between the upper magnetic ring and the lower magnetic ring, the magnetic field force with the same poles repelling each other also changes, the magnetic field force pushes the lower opening of the funnel of the oil guide sleeve to be always abutted against the outer circular surface of the small end of the connecting rod of the diesel engine, and cooling lubricating oil is ensured to penetrate through the radial oil hole of the small end of the connecting rod from the oil guide sleeve to enter the piston top and between the small end of the connecting rod and the piston pin, so that the piston top and the piston pin are fully cooled. Because the upper magnetic ring and the lower magnetic ring replace elastic parts, the defects that the oil guide sleeve scratches the small end of the connecting rod and the elastic parts wear the oil guide sleeve are avoided, the reliability of the invention is improved, and the diesel engine can work normally for a long time.
Advantages and features of the present invention will be illustrated and explained by the following non-restrictive description of preferred embodiments thereof, given by way of example only with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The invention is further illustrated by the following figures and examples.
As shown in figure 1, the invention comprises an oil guide sleeve 1, an elastic retainer ring 2 for a shaft, an upper magnetic ring 3 and a lower magnetic ring 4, wherein the upper end of the oil guide sleeve 1 is a round pipe 11 with a stepped shaft structure, the lower end of the oil guide sleeve 1 radially extends to form a funnel 12, the large end of the round pipe 11 of the oil guide sleeve 1 is vertically embedded into the lower part of a stepped hole 302 of a central platform 301 on the upper part of a piston 30 and is in clearance fit with the lower part of the stepped hole 302, the round pipe 11 on the upper end of the oil guide sleeve 1 can move up and down due to the structure, so that the lower opening of the funnel 12 of the oil guide sleeve 1 is abutted against the outer circular surface of a small connecting rod head 10 of a diesel engine and covered on a radial oil hole 101 of the small connecting rod head 10, and no matter how. The upper magnetic ring 3 and the lower magnetic ring 4 of the permanent magnet made of neodymium iron boron are oppositely arranged in the same pole and are respectively sleeved in the cavity 5 between the excircle of the small end of the circular tube 11 of the oil guide sleeve 1 and the hole wall of the stepped hole 302. The upper side surface of the upper magnetic ring 3 is abutted against the lower end surface of the upper end of the stepped hole 302, and the lower side surface of the lower magnetic ring 4 is abutted against the stepped surface 303 in the middle of the circular tube 11. Therefore, the lower opening of the funnel 12 of the oil guide sleeve 1 can always abut against the outer circular surface of the small connecting rod head 10 of the diesel engine by utilizing the magnetic field force of homopolar repulsion of the permanent magnets between the upper magnetic ring 3 and the lower magnetic ring 4, and the lower opening of the funnel covers the radial oil hole 101 of the small connecting rod head 10. The cooling lubricating oil passes through the funnel 12 and the radial oil hole 101 of the connecting rod small end 10 from the circular tube 11 at the upper end of the oil guide sleeve 1 downwards and enters the connecting rod small end shaft sleeve 40 and the piston pin 20 for cooling.
The small end of the circular tube 11 extends out of the central platform 301 at the upper part of the piston, and the elastic retainer ring 2 for the shaft is fixed on the small end of the circular tube 11 of the oil guide sleeve to prevent the oil guide sleeve 1 from moving downwards and falling off.
The excircle of the upper magnetic ring 3 is in clearance fit with the stepped hole 302, and a clearance delta 1 is reserved between the inner hole 31 of the upper magnetic ring and the excircle of the small end of the circular tube 11, so that the upper magnetic ring 3 can be conveniently installed. Gaps delta 2 are reserved between the excircle of the lower magnetic ring 4 and the stepped hole 302 and between the inner hole 41 of the lower magnetic ring and the excircle of the small end of the circular tube 11, and delta 1 is larger than delta 2. The structure ensures that the position of the upper magnetic ring 3 is fixed in a stepped hole 302 of a central platform 301 at the upper part of the piston 30, the lower magnetic ring 4 can move along with the up-and-down movement of the oil guide sleeve 1, and the lower opening of the funnel 12 of the oil guide sleeve 1 is always abutted against the outer circular surface of the small connecting rod head 10 of the diesel engine under the action of the magnetic field force with homopolarity repulsion of the permanent magnets between the upper magnetic ring 3 and the lower magnetic ring 4, so that cooling lubricating oil is ensured to enter the small connecting rod head 10 to lubricate and cool the small connecting rod head 10 and.
The thickness of the upper magnetic ring 3 is equal to that of the lower magnetic ring 4, and the ratio of the thickness H1 of the upper magnetic ring 3 or the thickness H1 of the lower magnetic ring 4 to the height L of the cavity 7 in the embodiment is H1/L =0.16, so that the lower magnetic ring 4 has a sufficient up-and-down moving space.
In addition to the above embodiments, the present invention may have other embodiments, and any technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of the claims of the present invention.
Claims (4)
1. A kind of diesel engine piston cooling lubricating oil conveying appliance, including leading the oil jacket and axle to use the elastic retaining ring, lead the oil jacket upper end to be the round tube of the stepped shaft structure, lead the oil jacket lower extreme and extend radially to become the funnel, lead the round tube big end of the oil jacket to imbed in the lower part of the stepped hole of the upper portion central terrace of piston vertically, and with the clearance fit of lower part of the stepped hole; the end head of the small end of the circular tube extends out of the central platform at the upper part of the piston, and the lower opening of the funnel of the oil guide sleeve is abutted against the outer circular surface of the small end of the connecting rod of the diesel engine and covers the radial oil hole at the small end of the connecting rod; the shaft is fixed on the small end of the circular tube of the oil guide sleeve by an elastic retainer ring; the oil guide sleeve is characterized by also comprising an upper magnetic ring and a lower magnetic ring, wherein the upper magnetic ring and the lower magnetic ring are oppositely arranged in the same pole and are respectively sleeved in a cavity between the excircle of the small end of the circular tube of the oil guide sleeve and the wall of the stepped hole; the upper side surface of the upper magnetic ring is abutted against the lower end surface of the upper end of the stepped hole, and the lower side surface of the lower magnetic ring is abutted against the stepped surface in the middle of the circular tube.
2. The diesel engine piston cooling lubricating oil conveying device as claimed in claim 1, characterized in that the excircle of the upper magnetic ring is in clearance fit with the stepped hole, and a clearance δ 1 is left between the inner hole of the upper magnetic ring and the excircle of the small end of the circular tube; gaps delta 2 are reserved between the excircle of the lower magnetic ring and the stepped hole and between the inner hole of the lower magnetic ring and the excircle of the small end of the circular tube, and delta 1 is larger than delta 2.
3. The diesel engine piston cooling lubricating oil conveying device as claimed in claim 1, characterized in that the thickness of the upper magnetic ring is equal to that of the lower magnetic ring, and the ratio of the thickness of the upper magnetic ring H1 or the thickness of the lower magnetic ring H1 to the height L of the cavity H1/L = 0.15-0.17.
4. The diesel engine piston cooling conveyor of claim 1, characterized in that the upper magnetic ring and the lower magnetic ring are made of neodymium iron boron permanent magnets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911165092.8A CN110700929A (en) | 2019-11-25 | 2019-11-25 | Diesel engine piston cooling lubricating oil conveying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911165092.8A CN110700929A (en) | 2019-11-25 | 2019-11-25 | Diesel engine piston cooling lubricating oil conveying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110700929A true CN110700929A (en) | 2020-01-17 |
Family
ID=69206740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911165092.8A Pending CN110700929A (en) | 2019-11-25 | 2019-11-25 | Diesel engine piston cooling lubricating oil conveying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110700929A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012207951A1 (en) * | 2012-05-11 | 2013-11-14 | Man Diesel & Turbo Se | Piston of an internal combustion engine |
| CN203780304U (en) * | 2014-04-16 | 2014-08-20 | 陕西汽车集团温州云顶汽车有限公司 | Mounting hanging bracket for exhaust pipe silencer of freight car |
| CN105156171A (en) * | 2015-08-18 | 2015-12-16 | 河南柴油机重工有限责任公司 | Lubricating and cooling combined type structure of engine piston and connecting rod set |
| CN107100755A (en) * | 2016-02-22 | 2017-08-29 | 马勒国际有限公司 | The piston of internal combustion engine |
| US20170314505A1 (en) * | 2014-10-30 | 2017-11-02 | Mahle International Gmbh | Cooling channel cover and piston provided with a cooling channel cover |
-
2019
- 2019-11-25 CN CN201911165092.8A patent/CN110700929A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012207951A1 (en) * | 2012-05-11 | 2013-11-14 | Man Diesel & Turbo Se | Piston of an internal combustion engine |
| CN203780304U (en) * | 2014-04-16 | 2014-08-20 | 陕西汽车集团温州云顶汽车有限公司 | Mounting hanging bracket for exhaust pipe silencer of freight car |
| US20170314505A1 (en) * | 2014-10-30 | 2017-11-02 | Mahle International Gmbh | Cooling channel cover and piston provided with a cooling channel cover |
| CN105156171A (en) * | 2015-08-18 | 2015-12-16 | 河南柴油机重工有限责任公司 | Lubricating and cooling combined type structure of engine piston and connecting rod set |
| CN107100755A (en) * | 2016-02-22 | 2017-08-29 | 马勒国际有限公司 | The piston of internal combustion engine |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200117 |
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| RJ01 | Rejection of invention patent application after publication |