CN108843449A - A kind of single-cylinder engine with hydraulic variable compression ratio mechanism - Google Patents
A kind of single-cylinder engine with hydraulic variable compression ratio mechanism Download PDFInfo
- Publication number
- CN108843449A CN108843449A CN201811056023.9A CN201811056023A CN108843449A CN 108843449 A CN108843449 A CN 108843449A CN 201811056023 A CN201811056023 A CN 201811056023A CN 108843449 A CN108843449 A CN 108843449A
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- oil
- crankshaft
- hydraulic
- connecting rod
- oilhole
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- 230000006835 compression Effects 0.000 title claims abstract description 42
- 238000007906 compression Methods 0.000 title claims abstract description 42
- 230000007246 mechanism Effects 0.000 title claims abstract description 19
- 239000003921 oil Substances 0.000 claims abstract description 134
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 20
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 12
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 12
- 239000010687 lubricating oil Substances 0.000 claims description 7
- 229910000906 Bronze Inorganic materials 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 239000010974 bronze Substances 0.000 claims description 6
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 6
- -1 polytetrafluoroethylene Polymers 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 2
- 208000004141 microcephaly Diseases 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000010721 machine oil Substances 0.000 abstract description 10
- 210000003205 muscle Anatomy 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000010710 diesel engine oil Substances 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
- F02B75/044—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of an adjustable piston length
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D15/00—Varying compression ratio
- F02D15/02—Varying compression ratio by alteration or displacement of piston stroke
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The present invention discloses a kind of single-cylinder engine with hydraulic variable compression ratio mechanism, including hydraulic piston, cylinder body, hydraulic oil pipe, connecting rod, connecting rod bearing shell, crankshaft, pump line, oil pump, oil sump, crankshaft bearing liner, oil are stifled etc., it is characterised in that：Oil pump is in oil sump, the oil outlet of oil pump, oil return hole are connected with the left and right sides oilhole of cylinder body by pump line respectively, the two sides oil duct of cylinder body leads directly to crankshaft bearing liner, the stifled screw threads for fastening that passes through of improved oil is in crankshaft oil pocket, crankshaft oil pocket is divided into two independent hydraulic chamber, there are two threaded holes, oil pipe, and connecting rod threaded hole is connected with the threaded hole on hydraulic piston for processing at connection-rod muscle；Machine oil is pumped by oil pump after being powered out of oil sump, it flows through in cylinder body from oil outlet through pump line, then is gone directly crankshaft oil pocket by crankshaft bearing liner, gone directly in connecting rod oilhole using the oil groove of connecting rod bearing shell, it is imported into hydraulic piston by oil pipe, to provide power for Ratios piston mechanism.
Description
Technical field
It is in particular a kind of with hydraulic variable compression the present invention relates to a kind of automobile engine Technical Design
Than the single-cylinder engine of mechanism.
Background technique
Compression ratio is the important performance characteristic of internal combustion engine, from thermodynamic property it is found that compression ratio will directly determine engine
The thermal efficiency of tool, discharge.Higher in-cylinder pressure that high compression ratio provides at burning initial stage, temperature help to obtain higher fire
Flame propagation velocity, meanwhile, high compression ratio can reduce exhaust gas remnants, can equally improve burning, and therefore, period of delay becomes shorter,
It in other words, is exactly to keep firing duration shorter using higher compression ratio in underload, the thermal efficiency increases, and can obviously change
The fuel economy of kind engine.Simultaneously because the improvement of in-cylinder combustion, therefore engine emission can be reduced.
For engine, when compressing relatively high, the raising opposite with pressure of generated cylinder compression outlet temperature is compressed, is mixed
The more complete of petrol molecule gasification in conjunction gas, atomization are more preferable, and because vortex disturbance enhances molecule compression intensively, when spark plug produces
When raw electric spark gaseous mixture burn rate can increase, discharge bigger explosion energy, improve the output power of engine.
But excessively high compression ratio can be brought a negative impact, and for gasoline engine, can generate detonation, can make it to diesel engine
It works more rough, noise and vibration become larger, and become larger to the shock loading of components, and influence diesel engine continues working service life and can
By property.
Changeable compression ratio technique is flexibly to adjust engine compresses by detecting engine load, fuel oil, working environment
Than so that improve engine output power while decrease the generation of pinking, at present both at home and abroad existing realization engine
The technical solution of alterable compression ratio integrally changes big, dynamic balancing there are complicated in mechanical structure, to engine and is unsatisfactory for caused drawing
The phenomenon that cylinder and the problem that development difficulty is big, research and development are at high cost, so that the practicability of whole variable compression ratio engine is not high,
So that variable compression ratio engine is from volume production, there are also with a distance from very big.
For at present, in invention patent mandate, be directed to hydraulic drive piston has with the scheme for realizing that compression ratio changes
Many kinds, but for how that hydraulic oil is seldom from the patent for importeding into internal piston, and implement excessively complicated.
Summary of the invention
The problem of being directed to existing hydraulic piston oil circuit difficult design, that the invention proposes a kind of structures is simple, to starting
Machine integrally changes a kind of small single-cylinder engine with hydraulic variable compression ratio mechanism suitable for single cylinder diesel, pass through by
Machine oil is pumped into lubricating oil pump from oil sump, and the variation that compression ratio is realized in piston is finally reached by cylinder body, crankshaft, connecting rod.
In order to achieve the above objectives, the technical solution adopted by the present invention is that：
A kind of single-cylinder engine with hydraulic variable compression ratio mechanism, which is characterized in that oil pump is integrated to be fixed on oily bottom
Three position four-way directional control valve is connected by the center of shell, pump line with cylinder body oilhole, and left and right crankshaft bearing liner is arranged in the left and right of cylinder body
On Curved shaft support seat, and the oilhole of oilhole and cylinder body on crankshaft bearing liner is aligned, the trunnion of crankshaft is placed on crankshaft axis
In watt, in the stifled precession crankshaft oil pocket of oil, crankshaft oil pocket is divided into two independent chambers, connecting rod bearing shell wraps the company of crankshaft
Bar axle journal, and compressed connecting rod bearing shell by two valves above and below connecting rod, the oilhole on connecting rod is aligned with the oilhole on connecting rod bearing shell, living
Plug pin constrains in hydraulic piston on small end of connecting rod, and the oilhole of hydraulic piston is connected by hydraulic oil pipe with the oilhole on connecting rod.
The oil pump is integrated to be divided into oil filter, lubricating oil pump, three position four-way directional control valve.
The connecting rod bearing shell is two valve structures being divided by the vertical circular section of aluminum barrel, and the inner wall of connecting rod bearing shell has two circles
Oil groove, oil groove inside are drilled with the oilhole for penetrating inner wall, and there is a circle seal groove in the left and right of oil groove respectively, totally three circle seal grooves,
Polytetrafluoroethylene (PTFE) bronze guidance tape is placed in slot.
The crankshaft bearing liner is aluminum barrel structure, and the inner wall of crankshaft bearing liner has a circle oil groove, is drilled with one on the inside of oil groove and wears
There are a circle seal groove in the oilhole of saturating inner wall, the left and right of oil groove respectively, totally two circle seal grooves, place polytetrafluoroethylene (PTFE) bronze in slot and lead
To band.
The cylinder body is drilled down into oil circuit in Curved shaft support seat, and laterally drills out oil in the position of crankshaft counter balance lower end
Road.
The crankshaft tiltedly bores oil circuit at left-right balance block, and oil circuit enters in crankshaft oil pocket, company of the other end in crankshaft
In bar axle journal or so one oil circuit to crankshaft oil pocket of each straight brill, the port of crankshaft oil pocket is 1/2 pipe screw thread structure.
It is cylindrical body that the oil is stifled, and the side of cylindrical member at one end is 1/2 pipe screw thread, and end face is flat recess, and cylindrical body is another
One end side has a circle oil groove, and the left and right sides of oil groove respectively has a circle seal groove, places rubber round section joint ring in seal groove.
The hydraulic piston is divide into upper part and lower part, and piston upper and lower body is separated from each other or closes under the action of hydraulic coupling
Hold together to realize the change of compression ratio, respectively there is an oilhole at the left and right end of piston boss, and the structure of oilhole is M10 screw thread, screw thread it is upper
End is boss structure.
The connecting rod is divided into the top part and the bottom part point, and connecting rod reinforcing rib or so respectively bores an oilhole to inner wall, the structure of oilhole
It is M10 screw thread, the upper end of screw thread is boss structure.
The hydraulic oil pipe hydraulic oil pipe is divided into hydraulic left oil pipe and hydraulic right oil pipe, hydraulic oil pipe by metal hose,
Cored screw, logical oil draining bolt, gasket seal composition.
Compared with currently available technology, the present invention processes on original single cylinder engine, ensure that economy；And it pushes
Hydraulic oil needed for hydraulic piston is directly provided by the filtered machine oil of oil sump, is avoided using other hydraulic oil because leakage is led
Cause mixes the oil product for making machine oil dirty with machine oil；Oil feeding line is designed on the basis of single cylinder diesel oil leab, is had very high
Reliability.
Detailed description of the invention
Fig. 1 variable compression ratio engine main sectional view.
Fig. 2 is Fig. 1 variable compression ratio engine A-A projection view.
Fig. 3 is the C-C projection view of Fig. 1 variable compression ratio engine.
Fig. 4 is the oblique view for the internal structure that the invention removes after engine cylinder body.
Fig. 5 is the oblique view of connecting rod part.
Fig. 6 is the main sectional view of crankshaft bearing liner part.
Fig. 7 is the top view of crankshaft bearing liner part.
Fig. 8 is the main view of connecting rod bearing shell part.
Fig. 9 is the A-A projection view of Fig. 8 connecting rod bearing shell main view.
Description of symbols：
1- cylinder body, 2- hydraulic piston, 3- hydraulic oil pipe (the hydraulic left oil pipe of 3.1-, the hydraulic right oil pipe of 3.2-), 4- connecting rod, 5-
Connecting rod bearing shell, 6- crankshaft, 7- pump line (7.1 left pump lines, the right pump line of 7.2-), 8- oil pump is integrated, 9- oil sump, 10- crankshaft bearing liner.
Specific embodiment
The present invention is based on the mechanism design that the hydraulic piston 2 on single cylinder diesel is carried out, which has succeeded
Suitable on ZS1100 diesel engine.Design work of the invention is all the improvement carried out in original machine, primarily directed to diesel engine
Oil feeding line is improved to hydraulic circuit, is transformed into a kind of single-cylinder engine with hydraulic variable compression ratio mechanism
The present invention is described in detail below according to Detailed description of the invention, of the present invention is that one of numerous embodiments are excellent
Select embodiment.
Refering to fig. 1,2 main body of hydraulic piston is divide into upper part and lower part, and the key seat of piston lower body each side has an oil
Hole, the structure of oilhole are M10 screw threads, and the upper end of screw thread is boss, and machine oil enters the oil pocket in hydraulic piston 2 through oil-through hole,
Oil pressure makes piston upper and lower body be separated from each other the change to realize compression ratio after increasing.
Refering to fig. 1, respectively there are an oilhole in Fig. 4, Fig. 5, the left and right of 4 reinforcing rib of connecting rod, and the structure of oilhole is M10 screw thread, spiral shell
The upper end of line is boss.
Refering to fig. 1, Fig. 2, Fig. 4, hydraulic oil pipe 3 divides for hydraulic left oil pipe 3.1 and hydraulic right oil pipe 3.2, because of hydraulic oil
Pipe 3 needs certain softness that pipe fractures when engine being avoided to rotate, therefore the hydraulic oil pipe 3 that the present invention selects is soft by metal
Pipe, cored screw, logical oil draining bolt, gasket seal composition, one end of hydraulic oil pipe 3 are connected with 6 oilhole of connecting rod, the other end and piston
The oilhole of lower body key seat is connected, and when hydraulic left oil pipe 3.1 transmits oil inlet, hydraulic right oil pipe 3.2 transmits fuel-displaced, and vice versa.
Referring to Fig.2, respectively there is the oil circuit tiltedly bored to lead to 6 oil pocket of crankshaft, the company of crankshaft 6 at the left-right balance block of crankshaft 6
Bar axle journal or so respectively bores in an oil circuit to 6 oil pocket of crankshaft, and the outlet of crankshaft oil pocket is 1/2 pipe screw thread structure.
Referring to Fig.2, oil stifled 11 is a cylindrical structure, Single port is 1/2 pipe screw thread, and the endface of pipe screw thread is " one
Font " notch, periphery have a circle oil groove, respectively have a circle seal groove in the left and right sides of oil groove 11, place rubber in seal groove
Round section joint ring, oil block up in 11 precession crankshaft, 6 oil pocket, and 6 oil pocket of crankshaft is divided into two independent chambers, and two at rod journal
A oil circuit hole is respectively in the two separate chambers, and two at balance weight are tiltedly also respectively at the two independences in oil circuit outlet
Chamber in.
Refering to Fig. 2, Fig. 8, Fig. 9, connecting rod bearing shell 5 is that an aluminum barrel is divided into two semi-circular cross-sections structures, pitman shaft
There are two circle oil grooves at watts 5 inner wall, respectively there is an oilhole to penetrate inner wall at two circle oil grooves, left and right each circle of two circle oil grooves is close
Sealing groove, three circle seal grooves are interior to place polytetrafluoroethylene (PTFE) bronze guidance tape to carry out dynamic sealing.
Refering to Fig. 2, Fig. 3, Fig. 6, Fig. 7, crankshaft bearing liner 10 is an aluminum barrel structure, and there is a circle oil groove in inside, has at oil groove
One oilhole penetrates inner wall, and oil groove each side has a circle seal groove, polytetrafluoroethylene (PTFE) bronze guiding is placed in seal groove
Bring action sealing into.
Refering to figure not 3, cylinder body 1 respectively has an oil circuit at 6 support base of left and right crankshaft, and the outlet of oil circuit is under balance weight
Portion.
Refering to fig. 1, Fig. 3, oil pump integrated 8 be with oil filter, lubricating oil pump, three position four-way directional control valve conglomerate.
Refering to fig. 1, Fig. 2, Fig. 3, oil pump integrated 8 are arranged in the center of oil sump, integrate the three position four-way directional control valve of upper end
It is connect with pump line 7, the oilhole of another termination cylinder body lower end of pump line 7, crankshaft axis is placed at the left and right Curved shaft support seat of cylinder body 1
Watts 10, the oilhole of crankshaft bearing liner 10 is aligned with 1 oilhole of cylinder body, and 6 trunnion of crankshaft is placed at crankshaft bearing liner 10, connecting rod bearing shell 5
At rod journal in crankshaft 6, two valves up and down of connecting rod 4 compress connecting rod bearing shell 5, and make the oilhole and connecting rod of connecting rod 4
The alignment of 5 oilhole of bearing shell, piston pin constrains in hydraulic piston 2 on 4 microcephaly of connecting rod, and with hydraulic oil pipe 3 by 2 oilhole of hydraulic piston
It is connected with 4 oilhole of connecting rod.
Refering to fig. 1, Fig. 2, Fig. 3, when hydraulic piston 2 needs high compression ratio, three position four-way directional control valve is in left side port,
Enter lubricating oil pump by the filtered machine oil of oil filter, then imported in left pump line 7.1 by reversal valve, left pump line 7.1 is along cylinder
1 left side oil circuit of body enters in the oil groove of crankshaft bearing liner 10, enters 6 left side of crankshaft by the oblique oil circuit in left side at 6 balance weight of crankshaft
In oil pocket, then enter in 5 oil groove of connecting rod bearing shell from oil pocket through the straight oil circuit in left side, it will by hydraulic left oil pipe using 4 oilhole of connecting rod
Machine oil is imported into the left oilhole of hydraulic piston 2, is provided positive hydraulic coupling for hydraulic piston 2, is pushed 2 top and the bottom split-phase of hydraulic piston
Mutually the raising of compression ratio is realized in separation.
Refering to fig. 1, Fig. 2, Fig. 3, likewise, three position four-way directional control valve is in right side when engine needs low compression ratio
Port enters lubricating oil pump by the filtered machine oil of oil filter, is imported in right pump line 7.2 by reversal valve, right along cylinder body 1
Side oil circuit, the right oil circuit of crankshaft 6, the right oil circuit of connecting rod 4, are finally entered inside hydraulic piston 2 by hydraulic oil pipe 3, are hydraulic piston 2
Buffer brake is provided, to realize the reduction of compression ratio.
Refering to fig. 1, Fig. 2, Fig. 3, when engine needs to stop to the change of compression ratio, during three-dimensional four-way reversing valve is in
Between state, lubricating oil pump is from the machine oil that oil sump 9 sucks not have in same traffic flow oil return bottom case 9 inside hydraulic piston 2 at this time
The flowing of hydraulic oil, compression ratio are in stable state.
Claims (10)
1. a kind of single-cylinder engine with hydraulic variable compression ratio mechanism, including cylinder body (1), hydraulic piston (2), hydraulic oil pipe
(3) (hydraulic left oil pipe (3.1), hydraulic right oil pipe (3.2)), connecting rod (4), connecting rod bearing shell (5), crankshaft (6), pump line (7) (left pump
Manage (7.1), right pump line (7.2)), oil pump integrates (8), oil sump (9), crankshaft bearing liner (10), and oil is stifled (11), it is characterised in that：
Oil pump integrates (8) and is fixed on the centers of oil sump (9), and pump line (7) is by three position four-way directional control valve and cylinder body (1) oilhole phase
Even, left and right crankshaft bearing liner (10) is arranged on left and right crankshaft (6) support base of cylinder body (1), and will be on crankshaft bearing liner (10)
The oilhole of oilhole and cylinder body (1) align, the trunnion of crankshaft (6) is placed in crankshaft bearing liner (10), stifled (11) precession of oil
In crankshaft (6) oil pocket, crankshaft (6) oil pocket is divided into two independent chambers, connecting rod bearing shell (5) wraps the company of crankshaft (6)
Bar axle journal, and two valves compress connecting rod bearing shell (5) up and down by connecting rod (4), on the oilhole and connecting rod bearing shell (5) on connecting rod (4)
Oilhole alignment, piston pin constrains in hydraulic piston (2) on connecting rod (4) microcephaly, and hydraulic oil pipe (3) is by hydraulic piston (2)
Oilhole is connected with the oilhole on connecting rod (4).
2. a kind of single-cylinder engine with hydraulic variable compression ratio mechanism according to claim 1, it is characterised in that institute
The oil pump stated integrates (8) and is divided into oil filter, lubricating oil pump, three position four-way directional control valve.
3. a kind of single-cylinder engine with hydraulic variable compression ratio mechanism according to claim 1, it is characterised in that institute
The connecting rod bearing shell (5) stated is two valve structures being divided by the vertical circular section of aluminum barrel, and the inner wall of connecting rod bearing shell (5) has two circles oily
Slot, oil groove inside are drilled with the oilhole for penetrating inner wall, and there is a circle seal groove in the left and right of oil groove respectively, totally three circle seal grooves, slot
Interior placement polytetrafluoroethylene (PTFE) bronze guidance tape.
4. a kind of single-cylinder engine with hydraulic variable compression ratio mechanism according to claim 1, it is characterised in that institute
The crankshaft bearing liner (10) stated is aluminum barrel structure, and the inner wall of crankshaft bearing liner (10) has a circle oil groove, is drilled with one on the inside of oil groove and penetrates
There are a circle seal groove in the oilhole of inner wall, the left and right of oil groove respectively, totally two circle seal grooves, place polytetrafluoroethylene (PTFE) bronze guiding in slot
Band.
5. a kind of single-cylinder engine with hydraulic variable compression ratio mechanism according to claim 1, it is characterised in that institute
The cylinder body (1) stated is drilled down into oil circuit in Curved shaft support seat, and laterally drills out oil circuit in the position of crankshaft (6) balance weight lower end.
6. a kind of single-cylinder engine with hydraulic variable compression ratio mechanism according to claim 1, it is characterised in that institute
The crankshaft (6) stated tiltedly bores oil circuit at left-right balance block, and oil circuit enters in crankshaft (6) oil pocket, connecting rod of the other end in crankshaft (6)
In each straight brill one oil circuit to crankshaft (6) oil pocket of axle journal or so, the port of crankshaft (6) oil pocket is 1/2 pipe screw thread structure.
7. a kind of single-cylinder engine with hydraulic variable compression ratio mechanism according to claim 1, it is characterised in that institute
It is cylindrical body that the oil stated, which blocks up (11), and the side of cylindrical member at one end is 1/2 pipe screw thread, and end face is flat recess, cylindrical body another side
There is a circle oil groove in face, and the left and right sides of oil groove respectively has a circle seal groove, places rubber round section joint ring in seal groove.
8. a kind of single-cylinder engine with hydraulic variable compression ratio mechanism according to claim 1, it is characterised in that institute
The hydraulic piston (2) stated is divide into upper part and lower part, and piston upper and lower body is separated from each other under the action of hydraulic coupling or closes up realization pressure
Respectively there is an oilhole at the change of contracting ratio, the left and right end of piston boss, and the structure of oilhole is M10 screw thread, and the upper end of screw thread is boss
Structure.
9. a kind of single-cylinder engine with hydraulic variable compression ratio mechanism according to claim 1, it is characterised in that institute
The connecting rod (4) stated is divided into the top part and the bottom part point, and connecting rod (4) reinforcing rib or so respectively bores an oilhole to inner wall, and the structure of oilhole is M10
Screw thread, the upper end of screw thread are boss structures.
10. a kind of single-cylinder engine with hydraulic variable compression ratio mechanism according to claim 1, it is characterised in that institute
The hydraulic oil pipe 3 stated divides for hydraulic left oil pipe 3.1 and hydraulic right oil pipe 3.2, and hydraulic oil pipe 3 is by metal hose, cored screw, logical
Oil draining bolt, gasket seal composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811056023.9A CN108843449A (en) | 2018-09-11 | 2018-09-11 | A kind of single-cylinder engine with hydraulic variable compression ratio mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811056023.9A CN108843449A (en) | 2018-09-11 | 2018-09-11 | A kind of single-cylinder engine with hydraulic variable compression ratio mechanism |
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|---|---|
| CN108843449A true CN108843449A (en) | 2018-11-20 |
Family
ID=64189796
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811056023.9A Pending CN108843449A (en) | 2018-09-11 | 2018-09-11 | A kind of single-cylinder engine with hydraulic variable compression ratio mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953077A (en) * | 2019-11-29 | 2020-04-03 | 宁波市鄞州德来特技术有限公司 | Vehicle, internal combustion engine with variable compression ratio and piston connecting rod mechanism thereof |
| CN114673587A (en) * | 2022-03-23 | 2022-06-28 | 重庆长安汽车股份有限公司 | Engine displacement variable device, engine and vehicle |
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| JPH03127052U (en) * | 1990-04-02 | 1991-12-20 | ||
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| JPH11257110A (en) * | 1998-03-12 | 1999-09-21 | Toyota Motor Corp | Compression ratio switching device for internal combustion engine |
| CN2557701Y (en) * | 2002-04-19 | 2003-06-25 | 山东巨菱股份有限公司 | Crankshaft with link lever brush lubrication device for single cylinder diesel engine |
| KR20110051589A (en) * | 2009-11-10 | 2011-05-18 | 현대자동차주식회사 | Oil supply passage for variable compression ratio engine |
| DE102012014917A1 (en) * | 2011-07-29 | 2013-02-07 | Fev Gmbh | Reciprocating piston engine for motor vehicle, has pressure pulse generator provided between crankshaft and oil reservoir, such that pressure pulse generated by pulse generator is controlled over oil supply control of driving mechanism |
| CN105626258A (en) * | 2016-03-16 | 2016-06-01 | 吉林大学 | Hydraulic-drive type variable-compression-ratio piston connection rod assembly |
| CN208858450U (en) * | 2018-09-11 | 2019-05-14 | 吉林大学 | A kind of single-cylinder engine with hydraulic variable compression ratio mechanism |
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| CN110953077A (en) * | 2019-11-29 | 2020-04-03 | 宁波市鄞州德来特技术有限公司 | Vehicle, internal combustion engine with variable compression ratio and piston connecting rod mechanism thereof |
| CN114673587A (en) * | 2022-03-23 | 2022-06-28 | 重庆长安汽车股份有限公司 | Engine displacement variable device, engine and vehicle |
| CN114673587B (en) * | 2022-03-23 | 2023-09-22 | 重庆长安汽车股份有限公司 | Engine displacement variable device, engine and vehicle |
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Application publication date: 20181120 |