CN109653895A - A kind of device improving small end of connecting rod lubrication state - Google Patents
A kind of device improving small end of connecting rod lubrication state Download PDFInfo
- Publication number
- CN109653895A CN109653895A CN201811359931.5A CN201811359931A CN109653895A CN 109653895 A CN109653895 A CN 109653895A CN 201811359931 A CN201811359931 A CN 201811359931A CN 109653895 A CN109653895 A CN 109653895A
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- small end
- piston
- cylinder
- convex edge
- 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
- 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
- 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
- F01P3/08—Cooling of piston exterior only, e.g. by jets
-
- 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
- F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
- F16C9/04—Connecting-rod bearings; Attachments thereof
-
- 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
- F16N—LUBRICATING
- F16N1/00—Constructional modifications of parts of machines or apparatus for the purpose of lubrication
Landscapes
- 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)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a kind of devices for improving small end of connecting rod lubrication state, belong to technical field of internal combustion engines, and small end of connecting rod is by support rod and is mounted on the cylinder of support boom end and forms；Piston is cylindrical-shaped structure, and end face is machined with the cavity for installing connecting rods microcephaly；The cylinder of the small end of connecting rod is connected together by piston pin with piston；Convex edge is equipped at the center of the cavity inner bottom surface of the piston；Circular through hole is machined on the periphery of the cylinder of the small end of connecting rod, and the circular through hole on the cylinder of small end of connecting rod is opposite with the convex edge in piston；More than one cooling nozzles is mounted on the cavity bottom of piston, and the convex edge on the cavity top of piston is directed toward in the outlet end of cooling nozzles straight up or obliquely；Cooling nozzles are for spraying lubricating oil.From cooling nozzles spray to piston tip lubricating oil some converge, drip at convex edge, and then it is secondary by oil collecting hole to enter small end of connecting rod revolution friction, improves the lubrication state of small end of connecting rod with this.
Description
Technical field
The invention belongs to technical field of internal combustion engines, and in particular to a kind of device for improving small end of connecting rod lubrication state.
Background technique
Power train in vehicle application is based on internal combustion engine at present, and crank link mechanism is the mechanism of internal combustion engine transmitting power, it is by piston
Linear reciprocating motion be changed into crankshaft rotary motion and output power.In internal combustion engine operational process, connecting rod is primarily subjected to
The alternating load that gas pressure and piston reciprocating inertia force generate.Small end of connecting rod is connected together by piston pin with piston, is held
By the torque that gas pressure, piston reciprocating inertia force and connecting rod swing from piston generate, so small end of connecting rod is connecting rod
The worst position of operating condition.Furthermore when engine operation, piston pin rotates in connecting rod small end hole, forms revolution friction
It is secondary.So the lubrication of small end of connecting rod is particularly significant.Small end of connecting rod uses splashing lubricating system in traditional diesel engine, i.e. crankshaft is done
When rotary motion, the machine oil in oil sump is splashed at small end of connecting rod to play small end of connecting rod under the shock of crankshaft or connecting rod
To the effect of lubrication.
With the raising of engine power density, the load of small end of connecting rod is continuously increased, and small end of connecting rod operating condition is into one
Step deteriorates, and can aggravate the abrasion of small end of connecting rod and piston pin, reduce the reliability of engine.So improving the lubrication of small end of connecting rod
Situation is very necessary.
Summary of the invention
In view of this, passing through the cavity in piston the present invention provides a kind of device for improving small end of connecting rod lubrication state
Downward convex edge is set at the center on top, from cooling nozzles spray to piston tip lubricating oil some converged at convex edge
Gather, drip, and then small end of connecting rod revolution friction pair is entered by oil collecting hole, increases the lubrication for entering small end of connecting rod revolution friction pair
The quantity of oil, improves the lubrication state of small end of connecting rod with this.
The present invention is achieved through the following technical solutions:
It is a kind of improve small end of connecting rod lubrication state device, small end of connecting rod by support rod and be mounted on support boom end circle
Cylinder composition, the axis of the cylinder and the length direction of support rod are vertical；Piston is cylindrical-shaped structure, and end face, which is machined with, to be used for
The cavity of installing connecting rods microcephaly；The cylinder of the small end of connecting rod is connected together by piston pin with piston；
Convex edge is equipped at the center of the cavity inner bottom surface of the piston；It is processed on the periphery of the cylinder of the small end of connecting rod
There is circular through hole, and the circular through hole on the cylinder of small end of connecting rod is opposite with the convex edge in piston；
More than one cooling nozzles is mounted on the cavity bottom of piston, and the outlet end of cooling nozzles straight up or
It is directed toward the convex edge on the cavity top of piston obliquely；Cooling nozzles are for spraying lubricating oil.
Further, cylindric lining of connecting rod small end, the company are installed between the cylinder and piston pin of small end of connecting rod
Circular through hole is machined on the periphery of bar small end bushing, and the circle of the circular through hole of lining of connecting rod small end and small end of connecting rod is logical
Hole communicates.
Further, the height H of the convex edge of the piston meets: 0.03D≤H≤0.06D, D are the diameter of piston.
Further, the piston pin is cylinder-like structure or cylindrical-shaped structure.
The utility model has the advantages that the present invention is by being arranged downward convex edge at the center on the cavity top of piston, by the sky of piston
The lubricating oil of chamber top inner surface is converged and is instilled in the oil collecting hole that small end of connecting rod and lining of connecting rod small end are formed, and is increased and is entered company
The lubricating oil of the inside and outside periphery of bar small end bushing, reduce between lining of connecting rod small end and small end of connecting rod and lining of connecting rod small end and
Abrasion between piston pin is conducive to the lubrication state for improving small end of connecting rod entirety, improves the functional reliability of small end of connecting rod.
Detailed description of the invention
Fig. 1 is structure composition figure of the present invention；
Fig. 2 is axonometric drawing of the invention；
Wherein, 1- piston, 2- cooling nozzles, 3- small end of connecting rod, 4- lining of connecting rod small end, 5- piston pin, the convex edge 6-, 7- collection
Oilhole, 8- lubricating oil.
Specific embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
Present embodiments provide a kind of device for improving small end of connecting rod lubrication state, referring to attached Fig. 1 and 2, small end of connecting rod 3 by
Support rod and the cylinder composition for being mounted on support boom end, the axis of the cylinder and the length direction of support rod are vertical；
Piston 1 is cylindrical-shaped structure, and end face is machined with the cavity for installing connecting rods microcephaly 3；
Piston pin 5 is cylinder-like structure or cylindrical-shaped structure；
The cylinder of the small end of connecting rod 3 is connected together by piston pin 5 with piston 1, and the cylinder of small end of connecting rod 3 and work
Cylindric lining of connecting rod small end 4 is installed between plug pin 5；The i.e. described lining of connecting rod small end 4 is sleeved on the cylinder of small end of connecting rod 3
Interior, the piston pin 5 is sleeved in lining of connecting rod small end 4；The small end of connecting rod 3 is mounted on the cavity of piston 1 by piston pin 5
In, and the length direction of the support rod of small end of connecting rod 3 is axial consistent with piston 1；
Wherein, convex edge 6 is equipped at the center of the cavity inner bottom surface of the piston 1, and the height H of convex edge 6 meets: 0.03D
≤ H≤0.06D, D are the diameter of piston 1；
Circular through hole is machined on the periphery of the cylinder of the small end of connecting rod 3；
Circular through hole is machined on the periphery of the lining of connecting rod small end 4；Circular through hole on lining of connecting rod small end 4 with
Circular through hole on small end of connecting rod 3 communicates, and forms oil collecting hole 7；The oil collecting hole 7 is opposite with the convex edge 6 in piston 1；
More than one cooling nozzles 2 is mounted on the cavity bottom of piston 1, and the outlet end of cooling nozzles 2 vertically to
The convex edge 6 on cavity top that is upper or being directed toward piston 1 obliquely；For cooling nozzles 2 for spraying lubricating oil 8, lubricating oil 8 is attached to work
The cavity top inner surface of plug 1, and parts of lubricating oil 8 converges at the convex edge 6, and instills the collection under gravity
In oilhole 7, that is, increase the lubricating oil 8 for entering the inside and outside periphery of lining of connecting rod small end 4, reduces lining of connecting rod small end 4 and connecting rod is small
Abrasion between first 3 and between lining of connecting rod small end 4 and piston pin 5 is conducive to improve the whole lubrication state of small end of connecting rod 3,
Improve the functional reliability of small end of connecting rod 3.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (4)
1. a kind of device for improving small end of connecting rod lubrication state, small end of connecting rod (3) is by support rod and is mounted on support boom end
Cylinder composition, the axis of the cylinder and the length direction of support rod are vertical；Piston (1) is cylindrical-shaped structure, end face processing
There is the cavity for installing connecting rods microcephaly (3)；The cylinder of the small end of connecting rod (3) is connected to by piston pin (5) with piston (1)
Together；
It is characterized in that, being equipped with convex edge (6) at the center of the cavity inner bottom surface of the piston (1)；The circle of the small end of connecting rod (3)
Circular through hole, and the circular through hole on the cylinder of small end of connecting rod (3) and the convex edge in piston (1) are machined on the periphery of cylinder
(6) opposite；
More than one cooling nozzles (2) is mounted on the cavity bottom of piston (1), and the outlet end of cooling nozzles (2) is vertical
It is directed toward the convex edge (6) on the cavity top of piston (1) upwards or obliquely；Cooling nozzles (2) are for spraying lubricating oil (8).
2. a kind of device for improving small end of connecting rod lubrication state as described in claim 1, which is characterized in that small end of connecting rod (3)
Cylinder and piston pin (5) between cylindric lining of connecting rod small end (4), the circumference of the lining of connecting rod small end (4) are installed
Circular through hole is machined on face, and the circular through hole of lining of connecting rod small end (4) is communicated with the circular through hole of small end of connecting rod (3).
3. a kind of device for improving small end of connecting rod lubrication state as described in claim 1, which is characterized in that the piston (1)
Convex edge (6) height H meet: 0.03D≤H≤0.06D, D be piston (1) diameter.
4. a kind of device for improving small end of connecting rod lubrication state as described in claim 1, which is characterized in that the piston pin
It (5) is cylinder-like structure or cylindrical-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811359931.5A CN109653895A (en) | 2018-11-15 | 2018-11-15 | A kind of device improving small end of connecting rod lubrication state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811359931.5A CN109653895A (en) | 2018-11-15 | 2018-11-15 | A kind of device improving small end of connecting rod lubrication state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109653895A true CN109653895A (en) | 2019-04-19 |
Family
ID=66111222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811359931.5A Pending CN109653895A (en) | 2018-11-15 | 2018-11-15 | A kind of device improving small end of connecting rod lubrication state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109653895A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359995A (en) * | 2019-06-28 | 2019-10-22 | 广西玉柴机器股份有限公司 | A kind of linkage using the cooling piston of oil duct |
| CN112761806A (en) * | 2021-01-27 | 2021-05-07 | 北京理工大学 | Oil supply structure based on accurate lubrication of integral piston |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1097110A (en) * | 1965-11-15 | 1967-12-29 | Specialloid Ltd | Liquid-cooled piston |
| JPH02169819A (en) * | 1988-12-21 | 1990-06-29 | Yamaha Motor Co Ltd | Two cycle engine |
| KR20040040919A (en) * | 2002-11-08 | 2004-05-13 | 현대자동차주식회사 | gallery cooling piston for and diesel engine |
| JP2006214296A (en) * | 2005-02-01 | 2006-08-17 | Hitachi Ltd | Piston of internal combustion engine |
| CN102330584A (en) * | 2011-08-05 | 2012-01-25 | 无锡开普动力有限公司 | Cooling lubricating structure used for piston connection rod of reciprocating piston internal combustion engine |
| JP2015025424A (en) * | 2013-07-26 | 2015-02-05 | 三菱自動車工業株式会社 | Engine |
| WO2016104171A1 (en) * | 2014-12-24 | 2016-06-30 | 三菱自動車工業株式会社 | Connecting rod and lubrication structure therefor |
| US20170009699A1 (en) * | 2015-07-10 | 2017-01-12 | Mahle International Gmbh | Oil-cooled piston for an internal combustion engine |
| CN106704022A (en) * | 2017-01-25 | 2017-05-24 | 无锡开普机械有限公司 | Cooling and lubricating structure for piston connecting rod of reciprocating piston type V-shaped engine |
| JP2017166568A (en) * | 2016-03-16 | 2017-09-21 | 本田技研工業株式会社 | Internal combustion engine |
-
2018
- 2018-11-15 CN CN201811359931.5A patent/CN109653895A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1097110A (en) * | 1965-11-15 | 1967-12-29 | Specialloid Ltd | Liquid-cooled piston |
| JPH02169819A (en) * | 1988-12-21 | 1990-06-29 | Yamaha Motor Co Ltd | Two cycle engine |
| KR20040040919A (en) * | 2002-11-08 | 2004-05-13 | 현대자동차주식회사 | gallery cooling piston for and diesel engine |
| JP2006214296A (en) * | 2005-02-01 | 2006-08-17 | Hitachi Ltd | Piston of internal combustion engine |
| CN102330584A (en) * | 2011-08-05 | 2012-01-25 | 无锡开普动力有限公司 | Cooling lubricating structure used for piston connection rod of reciprocating piston internal combustion engine |
| JP2015025424A (en) * | 2013-07-26 | 2015-02-05 | 三菱自動車工業株式会社 | Engine |
| WO2016104171A1 (en) * | 2014-12-24 | 2016-06-30 | 三菱自動車工業株式会社 | Connecting rod and lubrication structure therefor |
| US20170009699A1 (en) * | 2015-07-10 | 2017-01-12 | Mahle International Gmbh | Oil-cooled piston for an internal combustion engine |
| JP2017166568A (en) * | 2016-03-16 | 2017-09-21 | 本田技研工業株式会社 | Internal combustion engine |
| CN106704022A (en) * | 2017-01-25 | 2017-05-24 | 无锡开普机械有限公司 | Cooling and lubricating structure for piston connecting rod of reciprocating piston type V-shaped engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359995A (en) * | 2019-06-28 | 2019-10-22 | 广西玉柴机器股份有限公司 | A kind of linkage using the cooling piston of oil duct |
| CN112761806A (en) * | 2021-01-27 | 2021-05-07 | 北京理工大学 | Oil supply structure based on accurate lubrication of integral piston |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190419 |
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| WD01 | Invention patent application deemed withdrawn after publication |