CN107882861A - The connecting rod that a kind of length with eccentric part can become - Google Patents
The connecting rod that a kind of length with eccentric part can become Download PDFInfo
- Publication number
- CN107882861A CN107882861A CN201710916074.3A CN201710916074A CN107882861A CN 107882861 A CN107882861 A CN 107882861A CN 201710916074 A CN201710916074 A CN 201710916074A CN 107882861 A CN107882861 A CN 107882861A
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- CN
- China
- Prior art keywords
- connecting rod
- pin
- oil pressure
- eccentric wheel
- sliding groove
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- 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
- 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
- F16C7/06—Adjustable connecting-rods
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- 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
- F16C2360/23—Gas turbine engines
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention belongs to IC engine link rod field, and in particular to the connecting rod that a kind of length with eccentric part can become, including eccentric wheel, connecting rod；Connecting rod is installed on eccentric wheel, and the relative connecting rod of eccentric wheel energy rotates, and connecting rod can carry out stretching motion under the drive of eccentric wheel；Eccentric wheel is provided with pin sliding groove on the face contacted with connecting rod；Two oil pressure portions are provided with the position corresponding to pin sliding groove on connecting rod, two oil pressure portions are located at connecting rod different height, pin is provided with oil pressure portion, and when eccentric wheel rotates, pin slides along pin sliding groove；Oil pressure portion controls oil-feed/draining to realize the lock locking/unlocking to pin by valve.It, which can improve hydraulic motor contracting ratio, can improve the sub-load thermal efficiency, fuel oil is reduced to consume and avoid the risk of the high-load region pinking when improving compression ratio, the work of the high and low load of gasoline engine can be met simultaneously, the gasoline engine thermal efficiency can be improved, and can effectively prevents pinking.
Description
Technical field
The invention belongs to IC engine link rod field, and in particular to the connecting rod that a kind of length with eccentric part can become.
Background technology
More and more stricter with the regulation of automotive energy-saving emission-reducing, each motor corporation and research unit are for engine art
Expand the technical research of a variety of energy-saving and emission-reduction.According to engine operation principle, different pressures are used for engine different load
Contracting ratio, engine consumption can be reduced, reduce discharge.But currently marketed engine compression ratio is immutable, can not be solved
The certainly contradiction between oil consumption and pinking.Although existing related personnel is improved engine dress to realize that engine compression ratio is adjustable
Put, as Chinese patent CN104533636A discloses " variable compression ratio of engines system and control method " by small in gonnecting rod body
The eccentric pin assembly of head bore locking connection small with gonnecting rod body is designed between head bore and the pin-and-hole of piston, is moistened by solenoid valve control
Lubricating oil, which interrupts decompression, unlocks eccentric pin assembly and the connection of the small head bore of gonnecting rod body, and eccentric pin assembly is in gonnecting rod body and the work of piston
The firmly lower eccentric position for rotating, changing eccentric pin assembly, then recovers fuel feeding by solenoid valve control lubricating oil, relocks
Eccentric pin assembly and the connection of the small head bore of gonnecting rod body, so as to change the active length of gonnecting rod body, realize piston in compression top dead center
When piston-top surface position change, so as to change the volume of piston combustion chamber in compression top dead center, reach change engine pressure
The purpose of contracting ratio.But it is a unexpected process in the process of change compression ratio, high-load region be present in high compression ratio
The risk of pinking, and its is complicated, cost is very high, poor reliability, scheme performance difficulty.
The content of the invention
The present invention provides the connecting rod that a kind of length with eccentric part can become, and it, which can improve hydraulic motor contracting ratio, can improve portion
Divide the load thermal efficiency, reduce fuel oil and consume and avoid the risk of the high-load region pinking when improving compression ratio, vapour can be met simultaneously
The work of the high and low load of oil machine, can improve the gasoline engine thermal efficiency, and and can effectively prevents pinking.
To realize above-mentioned technical purpose, the specific technical scheme that the present invention takes is a kind of length with eccentric part
The connecting rod that can become, including eccentric wheel, connecting rod；Connecting rod is installed on eccentric wheel, and the relative connecting rod of eccentric wheel energy rotates, connecting rod energy
Stretching motion is carried out under the drive of eccentric wheel；Eccentric wheel is provided with pin sliding groove on the face contacted with connecting rod；On connecting rod
Two oil pressure portions are provided with the position corresponding to pin sliding groove, two oil pressure portions are located at connecting rod different height, and oil pressure is set in portion
There is pin, when eccentric wheel rotates, pin slides along pin sliding groove；Oil pressure portion controls oil-feed/draining to realize to pin by valve
Lock locking/unlocking.
As the improved technical scheme of the present invention, the termination of pin sliding groove is provided with spacing hole.
As the improved technical scheme of the present invention, oil duct is additionally provided with oil pressure portion, oil-feed/draining of valve control oil duct is realized
To the lock locking/unlocking of pin.
As the improved technical scheme of the present invention, oil pressure portion includes back-up ring, flexible member, and back-up ring is located at pin located at pin
One end of sliding groove；One end of flexible member is fixed on the other end on back-up ring and is fixed on pin.
As the improved technical scheme of the present invention, oil pressure portion includes circlip, and circlip is located at pin away from pin
One end of sliding groove.
As the improved technical scheme of the present invention, oil pressure portion includes plug, and plug is located at one of oil pressure portion away from eccentric wheel
End.
Beneficial effect
Engine compression ratio two-stage variable, the pinking of gasoline engine full load can be prevented, improve the reliability of engine；And can changes
The thermal efficiency of kind gasoline engine sub-load, reduce fuel consumption and improve discharge, so that automobile more energy-conserving and environment-protective；And can is kept away
Exempt from pinking when big load or full load, effectively improve engine reliability and economy.
Brief description of the drawings
The configuration schematic diagram of Fig. 1 apparatus of the present invention；
The cross-sectional view of Fig. 2 apparatus of the present invention；
The structural representation of Fig. 3 eccentric wheels of the present invention；
The close-up schematic view of connecting rod in Fig. 4 Fig. 1；
Connecting rod view during Fig. 5 minimum compression ratios；
Fig. 6 maximum compression ratios are connecting rod views；
In figure：100th, eccentric wheel；101st, connecting rod contact surface；102nd, connecting rod mounting hole contact surface；103rd, spacing hole；104th, pin is slided
Dynamic groove；105th, spacing hole；200th, connecting rod；201st, pin mounting hole；202nd, circlip slot；203rd, pin mounting hole；204th, bullet
Property circlip groove；A, oil duct；B, oil duct；300th, back-up ring；400th, spring；500th, pin；600th, circlip；700th, plug.
Embodiment
To make the purpose of the embodiment of the present invention and technical scheme clearer, below in conjunction with the attached of the embodiment of the present invention
Figure, the technical scheme of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is of the invention
Part of the embodiment, rather than whole embodiments.Based on described embodiments of the invention, those of ordinary skill in the art
The every other embodiment obtained on the premise of without creative work, belongs to the scope of protection of the invention.
The implication of heretofore described " connection " can be between part to be directly connected to can also pass through between part
Other parts are indirectly connected with.
Embodiment
The connecting rod that a kind of length with eccentric part can become as shown in Figure 1-2, including eccentric wheel 100, connecting rod 200；Connecting rod
It is installed on eccentric wheel, the relative connecting rod of eccentric wheel energy rotates, and connecting rod can carry out stretching motion when eccentric wheel rotates；Connecting rod
Two oil pressure portions are provided with, two oil pressure portions are located at connecting rod different height, and control oil-feed/draining by valve, realize that change is started
The purpose of machine compression ratio.
Specially connecting rod（Such as Fig. 4）With mounting hole, eccentric wheel is with excentric sleeve and positioned at excentric sleeve one end
Flange, connecting rod are installed on eccentric wheel by the cooperation of mounting hole and excentric sleeve, and flange plays the position-limiting action to connecting rod；Its
In, the side face of excentric sleeve is connecting rod mounting hole contact surface 102, and flange is connecting rod contact surface 101 in the one side contacted with connecting rod；
Further have, eccentric wheel（As shown in Figure 3）Pin sliding groove 104 is provided with the face contacted with connecting rod, pin slides
The termination of groove is provided with spacing hole 103（105）；Specifically it is located at for pin sliding groove on connecting rod contact surface；
Oil pressure portion includes pin mounting hole 201（203）, oil duct a (b), flexible member, circlip；Pin mounting hole closes on partially
The side of heart wheel is provided with pin and back-up ring 300；Flexible member one end is installed on pin 500, and closes on pin positioned at pin
The side of sliding groove, the other end are spacing by back-up ring 300；Flexible member is in compressive state all the time；The present embodiment elastic element
For spring 400；Pin mounting hole is provided with circlip slot in the one end of pin away from eccentric wheel, and circlip 600 is installed on bullet
In property circlip groove；Side of the pin mounting hole away from eccentric wheel is provided with plug 700, and plug, pin and pin mounting hole are common
Form oil pocket A（B）, oil duct be located at oil pocket wall and by valve control oil-feed/draining；Turning for relative connecting rod is occurring for eccentric wheel simultaneously
Dynamic, pin can be slided along pin sliding groove, and when pin slides into spacing hole, spacing hole is realized to be locked to pin, and realization is started
Machine compression ratio is controllable.Wherein, the oil duct a in oil pressure portion controls oil-feed/draining by valve at connecting rod low level；Positioned at connecting rod high level
The oil duct b in oil pressure portion controls oil-feed/draining by valve.
It is specifically：In cylinder under the force action of explosion pressure and reciprocal motional force, when eccentric wheel rotate counterclockwise,
The oil-filled entrance oil pocket A of oil duct a in the oil pressure portion of connecting rod lower position, oil pressure promote pin 500 to leave circlip slot
The circlip installed in 202 enters pin sliding groove 104, and relative eccentric wheel starts to slide, when spacing hole 103 is with eccentric wheel
At rotation to pin location, pin is pushed into spacing hole 103 by oil pressure, and eccentric wheel stops the rotation, and this position connecting rod effective length is most
It is small, it is minimum compression ratio state（As shown in Figure 5）.
When eccentric wheel starts to turn clockwise, oil duct a starts draining, in the case where the spring force of spring 400 promotes, pin 500
Come back in pin mounting hole 201, and the circlip 600 by being installed on circlip slot 204 fixes.Simultaneously
Oil duct b is oil-filled to enter oil pocket B, and oil pressure promotes pin to enter sliding groove slip, when spacing hole 105 is rotated to pin, pin quilt
Oil pressure is pushed into spacing hole, and eccentric wheel stops turning clockwise, and this position connecting rod effective length is maximum, is maximum compression ratio state
（As shown in Figure 6）.
Embodiments of the present invention are these are only, it describes more specific and in detail, but therefore can not be interpreted as pair
The limitation of the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, the present invention is not being departed from
On the premise of design, various modifications and improvements can be made, these belong to protection scope of the present invention.
Claims (6)
1. the connecting rod that a kind of length with eccentric part can become, it is characterised in that including eccentric wheel, connecting rod；Connecting rod is installed on partially
On heart wheel, the relative connecting rod of eccentric wheel energy rotates, and connecting rod can carry out stretching motion under the drive of eccentric wheel；Eccentric wheel with
The face of connecting rod contact is provided with pin sliding groove；Two oil pressure portions are provided with the position corresponding to pin sliding groove on connecting rod,
Two oil pressure portions are located at connecting rod different height, and pin is provided with oil pressure portion, and when eccentric wheel rotates, pin is slided along pin sliding groove
It is dynamic；Oil pressure portion controls oil-feed/draining to realize the lock locking/unlocking to pin by valve.
2. the connecting rod that a kind of length with eccentric part according to claim 1 can become, it is characterised in that pin sliding groove
Termination be provided with spacing hole.
3. the connecting rod that a kind of length with eccentric part according to claim 1 can become, it is characterised in that in oil pressure portion also
Provided with oil duct, oil-feed/draining of valve control oil duct realizes the lock locking/unlocking to pin.
4. the connecting rod that a kind of length with eccentric part according to claim 1 can become, it is characterised in that oil pressure portion includes
Back-up ring, flexible member, back-up ring are located at one end of pin sliding groove located at pin；One end of flexible member is fixed on another on back-up ring
End is fixed on pin.
5. the connecting rod that a kind of length with eccentric part according to claim 1 can become, it is characterised in that oil pressure portion includes
Circlip, circlip are located at the one end of pin away from pin sliding groove.
6. the connecting rod that a kind of length with eccentric part according to claim 1 can become, it is characterised in that oil pressure portion includes
Plug, plug are located at the one end of oil pressure portion away from eccentric wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710916074.3A CN107882861A (en) | 2017-09-30 | 2017-09-30 | The connecting rod that a kind of length with eccentric part can become |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710916074.3A CN107882861A (en) | 2017-09-30 | 2017-09-30 | The connecting rod that a kind of length with eccentric part can become |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107882861A true CN107882861A (en) | 2018-04-06 |
Family
ID=61781044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710916074.3A Pending CN107882861A (en) | 2017-09-30 | 2017-09-30 | The connecting rod that a kind of length with eccentric part can become |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107882861A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441963A (en) * | 2018-12-16 | 2019-03-08 | 中国航发沈阳发动机研究所 | A kind of length and angle adjustment structure |
| CN109578138A (en) * | 2018-11-29 | 2019-04-05 | 汽解放汽车有限公司 | Compression ratio mechanism and its working method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4830517A (en) * | 1987-06-01 | 1989-05-16 | Toyota Jidosha Kabushiki Kaisha | Device for locking rotation of an eccentric bearing of a compression ratio changing device |
| JPH11257110A (en) * | 1998-03-12 | 1999-09-21 | Toyota Motor Corp | Compression ratio switching device for internal combustion engine |
| CN203730141U (en) * | 2014-01-26 | 2014-07-23 | 梁荣光 | Internal combustion engine variable-compression-ratio device with self-locking structure |
| CN205638695U (en) * | 2016-05-13 | 2016-10-12 | 吉林大学 | Driven variable compression ratio piston link assembly of eccentric sleeve |
| CN106574550A (en) * | 2014-07-24 | 2017-04-19 | 博格华纳公司 | Single-supply-port activated connecting rod for variable compression ratio engines |
| CN106870128A (en) * | 2015-12-11 | 2017-06-20 | 现代自动车株式会社 | Variable Compression Ratio Device |
-
2017
- 2017-09-30 CN CN201710916074.3A patent/CN107882861A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4830517A (en) * | 1987-06-01 | 1989-05-16 | Toyota Jidosha Kabushiki Kaisha | Device for locking rotation of an eccentric bearing of a compression ratio changing device |
| JPH11257110A (en) * | 1998-03-12 | 1999-09-21 | Toyota Motor Corp | Compression ratio switching device for internal combustion engine |
| CN203730141U (en) * | 2014-01-26 | 2014-07-23 | 梁荣光 | Internal combustion engine variable-compression-ratio device with self-locking structure |
| CN106574550A (en) * | 2014-07-24 | 2017-04-19 | 博格华纳公司 | Single-supply-port activated connecting rod for variable compression ratio engines |
| CN106870128A (en) * | 2015-12-11 | 2017-06-20 | 现代自动车株式会社 | Variable Compression Ratio Device |
| CN205638695U (en) * | 2016-05-13 | 2016-10-12 | 吉林大学 | Driven variable compression ratio piston link assembly of eccentric sleeve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578138A (en) * | 2018-11-29 | 2019-04-05 | 汽解放汽车有限公司 | Compression ratio mechanism and its working method |
| CN109441963A (en) * | 2018-12-16 | 2019-03-08 | 中国航发沈阳发动机研究所 | A kind of length and angle adjustment structure |
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| 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: 20180406 |
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| RJ01 | Rejection of invention patent application after publication |