CN106968788A - A kind of variable compression ratio of engines device - Google Patents
A kind of variable compression ratio of engines device Download PDFInfo
- Publication number
- CN106968788A CN106968788A CN201710364660.1A CN201710364660A CN106968788A CN 106968788 A CN106968788 A CN 106968788A CN 201710364660 A CN201710364660 A CN 201710364660A CN 106968788 A CN106968788 A CN 106968788A
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- China
- Prior art keywords
- pin
- adjusting sleeve
- eccentric adjusting
- connecting rod
- piston
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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
-
- 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
- F02B75/045—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable connecting rod length
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- 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)
Abstract
The present invention relates to variable compression ratio of engines device.Two eccentric wheels are respectively fitted in piston hole seat, piston pin is passed through from two eccentric wheels and big connecting rod microcephaly, each set one is interference fitted with eccentric wheel and carries the small rod of chute on two eccentric wheels, there is a connecting rod reinforcement extended to both sides in the middle part of big connecting rod, hydraulic plunger is by being threadably mounted in the hole slot of connecting rod reinforcement both sides, sliding pin is installed in the aperture being provided with plunger rod through the slip pin runner on small rod by interference fit, sliding pin is set to be slided under the drive of plunger rod in chute, small rod is driven to swing, so that eccentric adjusting sleeve is rotated, piston position of relative cylinder in top dead centre or lower dead center is made to be changed, then compression ratio changes.
Description
Technical field
The present invention relates to a kind of automobile engine, it more particularly relates to which one kind can be according to engine driving
Situation changes the linkage of the variable compression ratio of its compression ratio.
Background technology
The compression ratio of engine refers to piston movement to cylinder volume during lower dead center and piston movement to during top dead centre
The ratio between volume of cylinder, compression ratio increase can effectively improve the performance and efficiency of engine.Because pressure rise can allow gas
Density become big, intermolecular distance also just diminishes, such fuel molecule and oxygen molecule distance also just closer to, burning velocity just more
It hurry up；Pressure rise raises cylinder temperature, gas molecule motion speed can be allowed to accelerate, fuel molecule and oxygen molecule are easier
Interact, mixed gas is easier to light.And less combustion space can complete burning faster, combustion process is accelerated
Also improve performance.And too high compression ratio can cause the frequency increase knocked, and high compression ratio is carried to the quality of fuel oil
Out higher requirement.To solve this problem, variable compression ratio engine can change the compression ratio of engine in real time so that
Engine improves the thermal efficiency and fuel economy of engine using high compression ratio in the case of middle-low load；It is negative in height
The generation of pinking is prevented using low compression ratio in the case of lotus.
Can using changeable compression ratio technique：
1. lifting the thermal efficiency of engine, improve Fuel Economy；
2. suitable for multipropellant driving；
3. contribute to reduction to discharge；
4. improve engine operational stability；
5. on the premise of dynamic property is ensured, engine displacement can be made further to reduce, structure is more compact, specific mass is more
It is high.
The content of the invention
The purpose of the present invention is that there is provided a kind of electrodeless variable compression ratio of internal combustion engine by changing engine link mechanism
Connecting rod.
In order to solve the above technical problems, the present invention adopts the following technical scheme that realization：
A kind of variable compression ratio of engines device, including piston pin 1, piston body 2, piston hole seat I 3, the snap ring of eccentric adjusting sleeve I
I 4, eccentric adjusting sleeve I 5, piston pin snap ring I 6, small rod I 7, slip pin runner I 8, the head 9 of sliding pin I, sliding pin I 10, plunger
Main body I 11, connecting rod reinforcement 12, big connecting rod 13, oil supply gallery 14, piston body II 15, sliding pin II 16, the head of sliding pin II
17th, pin runner II 18, small rod II 19, piston hole seat II 20, eccentric adjusting sleeve II 21, piston pin snap ring II 22, eccentric bushing are slided
Cylinder snap ring II 23, big connecting rod microcephaly 24, limited block I 25, plunger rod I 26, sealing ring I 27, plunger spring I 28, screw thread 29 and
Hole slot 30.
Described variable compression ratio of engines device, it is characterised in that：Described eccentric adjusting sleeve I 5, II 21 points of eccentric adjusting sleeve
It is not enclosed in piston hole seat I 3, piston hole seat II 20, and coordinates with piston hole seat gap, piston pin 1 is from eccentric adjusting sleeve I 5, eccentric
Pass through, and coordinate with two eccentric adjusting sleeves and the gap of big connecting rod microcephaly 24 in sleeve II 21 and big connecting rod microcephaly 24, eccentric adjusting sleeve I 5,
Big connecting rod microcephaly 24 is clipped in the middle by eccentric adjusting sleeve II 21, while piston pin snap ring I 6, piston pin snap ring II 22 and eccentric adjusting sleeve I
Snap ring 4, the snap ring 23 of eccentric adjusting sleeve II are spacing by piston pin 1 and eccentric adjusting sleeve I 5, eccentric adjusting sleeve II 21.
Described variable compression ratio of engines device, it is characterised in that：Described small rod I 7 is upper with small rod II 19
End is respectively fitted on eccentric adjusting sleeve I 5 and eccentric adjusting sleeve II 21, and small rod and eccentric adjusting sleeve are interference fit, small rod I 7 and small
The middle and lower part of connecting rod II 19 be provided with slip pin runner I 8, slide pin runner II 18, sliding pin I 10, sliding pin II 16 respectively with cunning
Dynamic pin runner I 8, slip pin runner II 18 gap can be slided with merging in chute, and the head 9 of sliding pin I and sliding pin II
Diameter is more than trough width at portion 17, thus sliding pin is spacing, and sliding pin I 10 and the other end diameter of sliding pin II 16 and cunning
Dynamic pin diameter is identical, and sliding pin can be made to be passed through from pin runner is slided.
Described variable compression ratio of engines device, it is characterised in that：Described sliding pin I 10 and the head of plunger rod I 26
The aperture interference fit being provided with, can be such that sliding pin I 10 is secured to after being passed through from slip pin runner on plunger rod I 26, big connecting rod 13
Middle part is added with a connecting rod reinforcement 12 being connected as a single entity with big connecting rod, in reinforcement left end, piston body I 11 and connecting rod reinforcement
The internal and external screw thread I 29 on hole slot I 30 being provided with 12 left ends is connected, hydraulic oil by the oil supply gallery 14 on big connecting rod 13,
By the oil pocket being provided with connecting rod reinforcement 12, hydraulic plunger is eventually arrived at, plunger spring I 28 is by plunger rod I 14 and plunger master
The wall of body I 11 is connected, and limited block I 25 is connected by nuts and bolt with piston body I 11, meanwhile, sealing ring I 27 is reduced
The leakage of hydraulic oil；Similarly, the structure and connected mode of the right-hand member of connecting rod reinforcement 12 are identical with left end.
Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings：
Fig. 1 is variable compression ratio of engines apparatus structure sectional view of the present invention；
Fig. 2 is variable compression ratio of engines schematic device of the present invention；
Fig. 3 is the sectional view that variable compression ratio of engines device of the present invention is splitted from Fig. 1 at A；
During Fig. 4 is variable compression ratio of engines device of the present invention, piston position contrast before and after hydraulic plunger work
Figure.
In figure, 1 piston pin, 2 piston bodies, 3 piston holes seat I, 4 eccentric adjusting sleeve I snap ring I, 5 eccentric adjusting sleeves I, 6 piston pin cards
Ring I, 7 small rods I, 8 slide pin runner I, the head of 9 sliding pin I, 10 sliding pins I, 11 piston bodies I, 12 connecting rod reinforcements, 13
Big connecting rod, 14 oil supply galleries, 15 piston bodies II, 16 sliding pins II, the head of 17 sliding pin II, 18 slip pin runners II, 19 are small
Connecting rod II, 20 piston holes seat, II, 21 eccentric adjusting sleeves II, 22 piston pin snap rings II, 23 eccentric adjusting sleeve snap rings II, 24 big connecting rods are small
Head, 25 limited blocks I, 26 plunger rods I, 27 sealing rings I, 28 plunger springs I, 29 screw threads and 30 hole slots.
Embodiment
Make detailed variable compression ratio operation principle to the present invention below in conjunction with the accompanying drawings to describe：
Refering to Fig. 1：
Eccentric adjusting sleeve I 5, eccentric adjusting sleeve II 21 be respectively fitted over piston hole seat I 3, piston hole seat II 20 in, and with piston hole seat
Gap coordinates, i.e., eccentric adjusting sleeve can be rotated in piston hole seat.
Piston pin 1 is passed through from eccentric adjusting sleeve I 5, eccentric adjusting sleeve II 21 and big connecting rod microcephaly 24, and with two eccentric adjusting sleeves and
The gap of big connecting rod microcephaly 24 coordinates, i.e. two eccentric adjusting sleeves can be rotated with big connecting rod microcephaly around piston pin.
Big connecting rod microcephaly 24 is clipped in the middle by eccentric adjusting sleeve I 5, eccentric adjusting sleeve II 21, while piston pin snap ring I 6, piston pin
Snap ring II 22 and the snap ring 4 of eccentric adjusting sleeve I, the snap ring 23 of eccentric adjusting sleeve II limit piston pin 1 and eccentric adjusting sleeve I 5, eccentric adjusting sleeve II 21
Position, prevents it from left and right play.
The upper end of small rod I 7 and small rod II 19 be respectively fitted over eccentric adjusting sleeve I 5 with eccentric adjusting sleeve II 21, small rod with
Eccentric adjusting sleeve is interference fit, i.e., the swing of two small rods can be rotated with movable eccentric wheel in piston hole.
After eccentric adjusting sleeve I 5 and eccentric adjusting sleeve II 21 are rotated, piston pin is changed relative to the position of piston hole, then
Piston occur up or down relative to piston pin a section shifting so that piston in top dead centre and lower dead center relative to cylinder
Position change.
The middle and lower part of small rod I 7 and small rod II 19 is provided with slip pin runner I 8, slides pin runner II 18, sliding pin I
10th, sliding pin II 16 is matched somebody with somebody with sliding pin runner I 8, slip pin runner II 18 gap respectively and merges and can be slided in chute, and slide
The head 9 of pin I is more than trough width with diameter at the head 17 of sliding pin II, so that sliding pin is spacing, it is ensured that sliding pin will not
Passed through out of chute, and sliding pin I 10 is identical with sliding pin diameter with the other end diameter of sliding pin II 16, can make sliding pin from cunning
Dynamic pin runner is passed through.
Refering to Fig. 1, Fig. 3：
Sliding pin I 10 is interference fitted with the aperture that the head of plunger rod I 26 is provided with, and can make sliding pin I 10 from slip pin runner
It is secured to after passing through on plunger rod I 26, so when plunger rod is flexible, sliding pin is just also moved together, so that sliding pin exists
Slide and slided on pin runner, then drive the rotation of small rod.
The middle part of big connecting rod 13 is added with a connecting rod reinforcement 12 being connected as a single entity with big connecting rod, in reinforcement left end, plunger master
Body I 11 is connected with the internal and external screw thread I 29 on the hole slot I 30 being provided with the left end of connecting rod reinforcement 12.
Hydraulic oil is by the oil supply gallery 14 on big connecting rod 13, by the oil pocket being provided with connecting rod reinforcement 12, most Zhongdao
Up to hydraulic plunger, plunger rod I 14 is connected by plunger spring I 28 with the wall of piston body I 11.When hydraulic oil air pump inoperative, even
The plunger rod I 26 of the side of bar reinforcement 12 is pulled initial position under the pulling force effect of plunger spring I 28；When hydraulic oil pump work
When making, plunger rod I 26 is moved out under the promotion of hydraulic oil, while the size of pressure limiting valve controlling oil pressure, makes plunger rod exist
Keep fixing on optional position in stroke.
Limited block I 25 is connected by nuts and bolt with piston body I 11, meanwhile, sealing ring I 27 reduces hydraulic oil
Leakage；Similarly, the structure and connected mode of the right-hand member of connecting rod reinforcement 12 are identical with left end.
Refering to Fig. 4：
The big connecting rod first half, small rod and the part of hydraulic plunger three constitute a right angled triangle, the big connecting rod first half with
Hydraulic plunger is two right-angle sides of right angled triangle, and small rod is hypotenuse, and the length of big connecting rod is constant, that is, has a right angle
While fixing, when hydraulic plunger length is constant, two right angle edge lengths are fixed, from Pythagorean theorem, and the length of the hypotenuse is also constant, that
The length of small rod is constant, i.e. position of the sliding pin in chute is constant, and now small rod will not drive eccentric adjusting sleeve to rotate,
Compression ratio cannot change；When needing to change compression ratio, high-pressure oil pump work, hydraulic oil promotes hydraulic plunger motion to be elongated to
Certain position, plunger promotes small rod to rotate, so as to drive eccentric adjusting sleeve to rotate so that piston changes with respect to the position of cylinder,
Compression ratio is changed.
Claims (4)
1. a kind of variable compression ratio of engines device, including I (3) of piston pin (1), piston body (2), piston hole seat, eccentric adjusting sleeve I
Snap ring I (4), eccentric adjusting sleeve I (5), piston pin snap ring I (6), small rod I (7), slip pin runner I (8), the head of sliding pin I
(9), sliding pin I (10), piston body I (11), connecting rod reinforcement (12), big connecting rod (13), oil supply gallery (14), piston body
II (15), sliding pin II (16), the head of sliding pin II (17), slip pin runner II (18), small rod II (19), piston hole seat II
(20), eccentric adjusting sleeve II (21), piston pin snap ring II (22), eccentric adjusting sleeve snap ring II (23), big connecting rod microcephaly (24), limited block
I (25), plunger rod I (26), sealing ring I (27), plunger spring I (28), screw thread (29) and hole slot (30).
2. according to the variable compression ratio of engines device described in claim 1, it is characterised in that：Described eccentric adjusting sleeve I (5),
Eccentric adjusting sleeve II (21) is respectively fitted in I (3) of piston hole seat, II (20) of piston hole seat, and is coordinated with piston hole seat gap, piston
Pin (1) passed through from eccentric adjusting sleeve I (5), eccentric adjusting sleeve II (21) and big connecting rod microcephaly (24), and with two eccentric adjusting sleeves and Dalian
Bar microcephaly (24) gap coordinates, and big connecting rod microcephaly (24) is clipped in the middle by eccentric adjusting sleeve I (5), eccentric adjusting sleeve II (21), simultaneously living
Plug pin snap ring I (6), piston pin snap ring II (22) and the snap ring of eccentric adjusting sleeve I (4), the snap ring of eccentric adjusting sleeve II (23) are by piston pin (1)
It is spacing with eccentric adjusting sleeve I (5), eccentric adjusting sleeve II (21).
3. according to the variable compression ratio of engines device described in claim 1, it is characterised in that：Described small rod I (7) with it is small
The upper end of connecting rod II (19) is respectively fitted over eccentric adjusting sleeve I (5) and on eccentric adjusting sleeve II (21), small rod is interference with eccentric adjusting sleeve
Coordinate, the middle and lower part of small rod I (7) and small rod II (19) is provided with slip pin runner I (8), slides pin runner II (18), slides
Pin I (10), sliding pin II (16) are respectively with sliding pin runner I (8), sliding pin runner II (18) gap with merge can be in chute
Slide, and the head of sliding pin I (9) is more than trough width with the head of sliding pin II (17) place diameter, thus sliding pin is spacing, and
Sliding pin I (10) is identical with sliding pin diameter with sliding pin II (16) other end diameter, and sliding pin can be made to be worn from pin runner is slided
Cross.
4. according to the variable compression ratio of engines device described in claim 1, it is characterised in that：Described sliding pin I (10) with
The aperture interference fit that plunger rod I (26) head is provided with, can make sliding pin I (10) be secured to plunger after being passed through from slip pin runner
On bar I (26), added with a connecting rod reinforcement (12) being connected as a single entity with big connecting rod in the middle part of big connecting rod (13), in reinforcement left end,
Piston body I (11) is connected with the internal and external screw thread I (29) on the hole slot I (30) being provided with connecting rod reinforcement (12) left end, liquid
Force feed by the oil pocket being provided with connecting rod reinforcement (12), eventually arrives at liquid by the oil supply gallery (14) on big connecting rod (13)
Plunger rod I (14) is connected by hydraulic plunger, plunger spring I (28) with piston body I (11) wall, and limited block I (25) passes through nut
It is connected with bolt with piston body I (11), meanwhile, sealing ring I (27) reduces the leakage of hydraulic oil；Similarly, connecting rod reinforcement
(12) structure and connected mode of right-hand member are identical with left end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710364660.1A CN106968788A (en) | 2017-05-22 | 2017-05-22 | A kind of variable compression ratio of engines device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710364660.1A CN106968788A (en) | 2017-05-22 | 2017-05-22 | A kind of variable compression ratio of engines device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106968788A true CN106968788A (en) | 2017-07-21 |
Family
ID=59326896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710364660.1A Pending CN106968788A (en) | 2017-05-22 | 2017-05-22 | A kind of variable compression ratio of engines device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106968788A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776554A (en) * | 2022-06-20 | 2022-07-22 | 徐州晟煜隆信息科技有限公司 | Piston type air compressor |
| CN115126599A (en) * | 2022-06-15 | 2022-09-30 | 浙江吉利控股集团有限公司 | Variable compression ratio engine system, vehicle and control method thereof |
Citations (8)
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|---|---|---|---|---|
| CN101560917A (en) * | 2009-04-21 | 2009-10-21 | 张志强 | Variable compression ratio device of automobile engine |
| CN102465770A (en) * | 2010-11-16 | 2012-05-23 | 现代自动车株式会社 | Variable compression ratio apparatus |
| CN104279055A (en) * | 2013-07-05 | 2015-01-14 | 德国海利特有限公司 | Connecting rod for a two-stage variable compression |
| CN105715370A (en) * | 2014-12-22 | 2016-06-29 | 丰田自动车株式会社 | Variable Length Connecting Rod And Variable Compression Ratio Internal Combustion Engine |
| JP2016142137A (en) * | 2015-01-29 | 2016-08-08 | トヨタ自動車株式会社 | Variable compression ratio internal combustion engine |
| JP2016145563A (en) * | 2015-02-09 | 2016-08-12 | トヨタ自動車株式会社 | Variable compression ratio internal combustion engine |
| CN106089455A (en) * | 2016-08-11 | 2016-11-09 | 王自勤 | The control method of engine compression ratio continuous variable and device |
| CN206987961U (en) * | 2017-05-22 | 2018-02-09 | 吉林大学 | A kind of variable compression ratio of engines device |
-
2017
- 2017-05-22 CN CN201710364660.1A patent/CN106968788A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560917A (en) * | 2009-04-21 | 2009-10-21 | 张志强 | Variable compression ratio device of automobile engine |
| CN102465770A (en) * | 2010-11-16 | 2012-05-23 | 现代自动车株式会社 | Variable compression ratio apparatus |
| CN104279055A (en) * | 2013-07-05 | 2015-01-14 | 德国海利特有限公司 | Connecting rod for a two-stage variable compression |
| CN105715370A (en) * | 2014-12-22 | 2016-06-29 | 丰田自动车株式会社 | Variable Length Connecting Rod And Variable Compression Ratio Internal Combustion Engine |
| JP2016142137A (en) * | 2015-01-29 | 2016-08-08 | トヨタ自動車株式会社 | Variable compression ratio internal combustion engine |
| JP2016145563A (en) * | 2015-02-09 | 2016-08-12 | トヨタ自動車株式会社 | Variable compression ratio internal combustion engine |
| CN106089455A (en) * | 2016-08-11 | 2016-11-09 | 王自勤 | The control method of engine compression ratio continuous variable and device |
| CN206987961U (en) * | 2017-05-22 | 2018-02-09 | 吉林大学 | A kind of variable compression ratio of engines device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126599A (en) * | 2022-06-15 | 2022-09-30 | 浙江吉利控股集团有限公司 | Variable compression ratio engine system, vehicle and control method thereof |
| CN115126599B (en) * | 2022-06-15 | 2024-03-08 | 浙江吉利控股集团有限公司 | Variable compression ratio engine system, vehicle and control method thereof |
| CN114776554A (en) * | 2022-06-20 | 2022-07-22 | 徐州晟煜隆信息科技有限公司 | Piston type air compressor |
| CN114776554B (en) * | 2022-06-20 | 2022-11-15 | 徐州晟煜隆信息科技有限公司 | Piston type air compressor |
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Application publication date: 20170721 |