CN106930831A - Automatically controlled eccentric gear type variable compression ratio engine - Google Patents
Automatically controlled eccentric gear type variable compression ratio engine Download PDFInfo
- Publication number
- CN106930831A CN106930831A CN201710229147.1A CN201710229147A CN106930831A CN 106930831 A CN106930831 A CN 106930831A CN 201710229147 A CN201710229147 A CN 201710229147A CN 106930831 A CN106930831 A CN 106930831A
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- China
- Prior art keywords
- eccentric
- compression ratio
- eccentric gear
- gear
- slip ring
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Classifications
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- 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
- F02B75/048—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable crank stroke 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 invention discloses automatically controlled eccentric gear type variable compression ratio engine, including cylinder body and the piston positioned at cylinder interior, the piston pin of piston is connected with the small end of connecting rod, the big end of connecting rod is connected with bent axle, crankshaft front end is provided with crank pulley, connected by the way that eccentric gear is eccentric between the big end of connecting rod and bent axle, eccentric gear includes gear and eccentric wheel, brush carriage is provided with the cylinder body of crank pulley periphery, brush on brush carriage is electrically connected with the conducting slip ring seat for being arranged at crank pulley front end, conducting slip ring seat is electrically connected by wire with the regulation motor being arranged on crankshaft crank, the gear coupling of the gear of regulation motor and the eccentric gear being arranged on crank-shaft link neck, the eccentric wheel of eccentric gear coordinates with the big end of connecting rod.The present invention controls the operating of eccentric gear to change compression ratio using regulation motor, with simple structure, be easily achieved, stable performance, with low cost, applied widely and oil-saving effect outstanding feature.
Description
Technical field
The present invention relates to technical field of internal combustion engines, in particular to a kind of automatically controlled eccentric gear type variable compression ratio engine.
Background technology
At present, the research of the engine on variable compression ratio is the important research direction of technical field of internal combustion engines.Internal combustion
Machine in middle low-speed running, because air inflow or distributive value are less, in compression stroke or the maximum pressure or temperature of expansion stroke
It is relatively low, it is adapted to use compression ratio higher；In middle rotation speed operation high, air inflow or distributive value are larger, in compression stroke or do
The maximum pressure or temperature of work(stroke are higher, are adapted to use relatively low compression ratio, are substantially improved with realizing the efficiency of internal combustion engine.Can
Has there is longer time in variant compression ratio this concept, but in the market circulation this engine of application is few, this
Though also illustrate that variable compression ratio engine is good, feasibility is very poor, there is a problem of numerous：As complex structure, control are tired
Difficulty, regulated quantity is not enough, and weight lays particular stress on, and volume is bigger than normal, and high cost, the life-span is shorter, and exploitativeness is poor, performance instability and inspection
Many problems such as maintenance difficult, cause the Recent Progresses In The Development of variable compression ratio engine slow.
The content of the invention
The invention aims to solve the deficiency that above-mentioned background technology is present, propose that a kind of automatically controlled eccentric gear type can
Variable compression ratio engine, it is its structure simplicity, stable performance, with low cost, easy to spread.
To achieve the above object, the automatically controlled eccentric gear type variable compression ratio engine designed by the present invention, including cylinder body
With the piston positioned at cylinder interior, the piston pin of the piston is connected with the small end of connecting rod, the big end of the connecting rod with it is bent
Axle is connected, and the crankshaft front end is provided with crank pulley, and it is characterized in that, between the big end of the connecting rod and bent axle
Connected by eccentric gear,
The eccentric gear is made up of gear, eccentric wheel and location hole；The eccentric wheel and gear are connected as one, described
Gear is coaxial with location hole；The eccentric wheel is eccentric with location hole；The location hole coordinates with bent axle；The eccentric wheel outer surface
Big end internal surface of hole with connecting rod coordinates；
Be provided with brush carriage on the cylinder body of crank pulley periphery, the brush on the brush carriage be arranged at song
The conducting slip ring seat electrical contact of shaft pulley front end, the conducting slip ring seat passes through wire and the regulation being arranged on crankshaft crank
Motor is electrically connected, and the regulation motor is engaged by the gear being arranged on output shaft with the gear of the eccentric gear.
Further, the conducting slip ring seat includes slip ring and base, the slip ring and base mutually insulated, floor installation
It is fixed in the groove of crank pulley front end, slip ring) made electrical contact with the brush on brush carriage, slip ring is connected with wire.
Further, the wire drawn from conducting slip ring seat sequentially passes through the wire set along axis on trunnion
Hole, the metallic channel set along crank side, it is connected with regulation motor through the wire guide set along connecting rod neck axis.
Further, the regulation motor is installed on the crank side of bent axle by bolt.
Further, the eccentric wheel of the eccentric gear is half-turn toothing, and oil leab is provided with the location hole.
Further, the conducting slip ring seat tool has double slip rings or many slip ring structures, and control mould is provided with base
Block.
Further, it is provided with electric capacity on the base of the conducting slip ring seat.Electric capacity can extend brush with burning voltage
With the service life of conducting slip ring.
Further, the wire is fixed on bent axle using buckle or viscose glue.
Further, the brush carriage and conducting slip ring seat are integral type structure, it is easy to which maintenance replacing and configuration are more
Newly.
Compared with prior art, the present invention proposes a kind of automatically controlled eccentric gear type variable compression ratio engine, realizes
Eccentric gear is located at the flexible design inside engine cylinder-body, is not only effectively utilized installing space, and convenient management and control
System.The present invention changes compression ratio using the operating of regulation motor control eccentric gear, is changed by the eccentric gear anglec of rotation
Calculate actual compression ratio；Eccentric gear and regulation motor in bent axle link up via the wire harness in bent axle, sliding by conduction
Ring seat and brush carriage wire harness etc. are controlled by control computer.Simple structure of the present invention, be easily achieved, stable performance, it is with low cost,
It is applied widely and oil-saving effect is notable.
Brief description of the drawings
Fig. 1 is the structural representation of automatically controlled eccentric gear type variable compression ratio engine of the invention.
Fig. 2 is enlarged drawing at L in Fig. 1.
Fig. 3 is the first dimensional structure diagram of the bent axle of automatically controlled eccentric gear type variable compression ratio engine of the invention.
Fig. 4 is the second dimensional structure diagram of the bent axle of automatically controlled eccentric gear type variable compression ratio engine of the invention.
Fig. 5 is the structural representation of wire arrangement in Fig. 3.
Fig. 6 is the structural representation of wire arrangement in Fig. 4.
Fig. 7 is the front view of eccentric gear in Fig. 3.
Fig. 8 is the dimensional structure diagram of eccentric gear in Fig. 3.
Fig. 9 be the present invention regulation compression ratio before and after piston respectively be located at top dead-centre when state diagram.
Figure 10 be the present invention regulation compression ratio before and after piston respectively be located at bottom dead centre when state diagram.
Figure 11 is the front view of eccentric gear in second embodiment of the invention.
Figure 12 is the left view of Figure 11.
In figure：Cylinder body 1, piston 2, piston pin 3, connecting rod 4, bent axle 5, metallic channel 6, eccentric gear 7, gear 7.1, eccentric wheel
7.2, location hole 7.3, wire guide 8, regulation motor 9, crank pulley 10, wire 11, base 12, slip ring 13, brush carriage 14,
Upper summit I, lower summit H, piston top dead center change in location line M, piston lower dead point position change line N.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Fig. 1~Fig. 8, a kind of automatically controlled eccentric gear type variable compression ratio engine of the present invention, including cylinder body 1, work
Plug 2, connecting rod 4, bent axle 5, crank pulley 10, brush carriage 14, conducting slip ring seat, eccentric gear 7 and regulation motor 9, other
Part is identical with other engines.
Conducting slip ring seat is installed, conducting slip ring seat includes slip ring 13 and base 12 inside the front end of crank pulley 10,
Slip ring 13 and the mutually insulated of base 12, base 12 are mounted in the front end groove of crank pulley 10, slip ring 13 and brush branch
Brush electrical contact on frame 14, slip ring 13 is connected with wire 11.The support of brush carriage 14 is arranged on around crank pulley 10
Cylinder body 1 on, the brush in the middle of brush carriage 14 is pressed on slip ring 13, is in close contact with slip ring 13.The trunnion of bent axle 5, song
Arrangement is interspersed with wire 11 on handle and connecting rod neck, and regulation motor 9 is provided with the crank of bent axle 5.It is arranged on the connecting rod neck of bent axle 5
There is eccentric gear 7, eccentric gear 7 is made up of gear 7.1, eccentric wheel 7.2 and location hole 7.3.Eccentric wheel 7.2 and gear 7.1 connect
One is connected in, gear 7.1 is coaxial with location hole 7.3；Eccentric wheel 7.2 is eccentric with location hole 7.3；Location hole 7.3 is matched somebody with somebody with bent axle 5
Close；The outer surface of eccentric wheel 7.2 coordinates with the big end internal surface of hole of connecting rod 4, on gear 7.1 and the output shaft of regulation motor 9
Gear coupling.
Trunnion that bent axle 5 is and wire guide 8 is offered on connecting rod neck, metallic channel 6 is offered in crank side.Wire 11
Passed through in wire guide 8 from crankshaft front end by trunnion, the wire guide 8 of connecting rod neck is passed through further along crank side metallic channel 6, according to
This analogizes, and wire 11 can introduce the rear end of bent axle 5.Wire 11 is connected after connecting, it is necessary to be consolidated using buckle or viscose glue
It is fixed, prevent wire from shaking, releasing or wear and tear.Leading between the wire guide 8 on wire 11 and the trunnion of bent axle 5 and on connecting rod neck
Seal nipple is provided between string holes 8, joint is possessed good seal performance.Because the front end of bent axle 5 needs installation sealing to connect
Head, therefore crank pulley 10 is using the fastening of large size nut.Wire 11 and regulation motor 9 the symmetrical balance arrangement on bent axle.
Conducting slip ring seat is fixed in the front end groove of crank pulley 10.Slip ring 13 connects with the brush of brush carriage 14
Touch, base 12 is fixed in the front end groove of crank pulley 10, and slip ring connection is connected with the seal nipple of crankshaft front end；Conduction is sliding
According to be actually needed can be with configuration control module on the base 12 of ring seat, control module is used for controlling to adjust the operating of motor or is used as
Wireless Data Transmission.The electric capacity of suitable capacity can also be configured on the base of conducting slip ring seat 12, electric capacity is electrically connected with slip ring 13,
With burning voltage, the service life of extension brush and conducting slip ring.Conducting slip ring seat can be fabricated to one with the wire harness in bent axle 5
Body, is for ease of maintenaince to change and config update as the benefit of an individual components.Slip ring 13 can be using double slip rings or many
Slip ring, the brush with brush carriage 14 is corresponding.
Brush carriage 14 is the carbon brush or carbon brush supports of motor；It is made up of brush, skeleton, wire and brush joint；Brush
It is adjacent on the surface of slip ring 13 of conducting slip ring seat, skeleton plays fixation, on the cylinder body 1 around crank pulley 10,
Different patterns can be made according to different demands；In order to ensure that good conductive performance and assembling are repaired, particularly data wire needs
Using double brush, many brushes or Wireless Data Transmission；Next to that electric brush slip ring seat is assembled integrally with brush carriage, be conducive to
The quality of production and maintenance are changed.
Regulation motor 9 is arranged on the side of the crank of bent axle 5 by bolt, and each motor is arranged on the relative equilibrium position of bent axle 5
Put, the tooth with eccentric gear 7 is engaged, be connected with the wire 11 of bent axle 5；Regulation motor 9 can drive in normal working of engine
The forward or reverse of eccentric gear 7, additionally it is possible to locking eccentric gear 7, control computer expert overregulates operating or the position sensing of motor 9
Device detects the actual angle of eccentric gear 7, calculates actual compression ratio.
As shown in Fig. 9,10, A figures are represented and do not adjust compression ratio working condition of the present invention in Fig. 9, and eccentric gear 7 is located at initial
State, when its eccentric direction is located at position vertically upward, piston 2 is located in the state of top dead-centre, the eccentric wheel of eccentric gear 7
Upper summit I on 7.2 is centrally located on same straight line with the center of bent axle 5, piston 2.When B figures represent regulation compression ratio, it is eccentric
Gear 7 is rotated under the drive of regulation motor 9, and piston 2 is located in the state of top dead-centre, summit on the eccentric wheel 7.2 of eccentric gear 7
The position of I there occurs change, and the upper summit I on the eccentric wheel 7.2 of eccentric gear 7 is with the center of bent axle 5, the center of piston 2 not same
On straight line, now the upper dead center position of piston 2 is more relatively low during compression ratio than not adjusting, such as the upper dead center position of piston 2 change line M
It is shown, thus reach the effect of compression ratio in regulation cylinder.
When A figures are represented and do not adjust compression ratio in Figure 10, positioned at original state, piston 2 is located in the state of bottom dead centre, partially
Lower summit H on the eccentric wheel 7.2 of heart gear 7 is centrally located on same straight line with the center of bent axle 5, piston 2.B figures are represented to be adjusted
During section compression ratio, eccentric gear 7 is rotated under the drive of regulation motor 9, and piston 2 is located in the state of bottom dead centre, eccentric gear
The position of 7 times summit H there occurs change, the lower summit H on the eccentric wheel 7.2 of eccentric gear 7 and the center of bent axle 5, the center of piston 2
It is not arranged on the same straight line, now the lower dead point position of piston 2 is more higher during compression ratio than not adjusting, such as the change in location line N of piston 2
It is shown, thus reach the effect of compression ratio in regulation cylinder.
Second embodiment of the invention and the structure that the difference of one embodiment is eccentric gear 7.As schemed
11st, shown in 12, eccentric gear 7 is split into two along the center of location hole 7.3 or gear 7.1, by way of riveting or welding
On the connecting rod neck of bent axle 5, gear 7.1 is engaged with the gear on the output shaft of regulation motor 9, and the stub end of connecting rod 4 is installed
On eccentric wheel 7.2；Gear 7.1 only needs half-turn tooth with regard to that can expire the regulation of compression ratio, and the set location of tooth should be with tune on gear 7.1
Section motor 9 position is adapted, and so as to the excursion of compression ratio, the advantage of half-turn tooth is that control computer expert can be allowed to overregulate motor
The initial position of direct detection eccentric gear 7, can also gather the initial position of eccentric gear 7 by set location sensor；
Bearing is not set in location hole 7.3, oil leab is provided with, the bearing of connecting rod 4 is lubricated；Because the facewidth of eccentric wheel 7.2 is small, without balance
Problem.
Although being described to the preferred embodiments of the present invention above in conjunction with accompanying drawing, the invention is not limited in upper
The specific real mode stated, above-mentioned specific embodiment is only schematical, is not restricted, the common skill of this area
Art personnel under enlightenment of the invention, in the case of present inventive concept and scope of the claimed protection is not departed from, can be with
The specific conversion of many forms is made, these are belonged in protection scope of the present invention.
Claims (9)
1. automatically controlled eccentric gear type variable compression ratio engine, including cylinder body (1) and the piston (2) positioned at cylinder body (1) inside, institute
The piston pin (3) for stating piston (2) is connected with the small end of connecting rod (4), and the big end of the connecting rod (4) is connected with bent axle (5), institute
State bent axle (5) front end and be provided with crank pulley (10), it is characterised in that：Between the big end of the connecting rod (4) and bent axle (5)
Connected by eccentric gear (7),
The eccentric gear (7) is made up of gear (7.1), eccentric wheel (7.2) and location hole (7.3)；The eccentric wheel (7.2) and
Gear (7.1) is connected as one, and the gear (7.1) is coaxial with location hole (7.3)；The eccentric wheel (7.2) and location hole
(7.3) it is eccentric；The location hole (7.3) coordinates with bent axle (5)；The outer surface of the eccentric wheel (7.2) and the big end of connecting rod (4)
Portion's internal surface of hole coordinates；
Brush carriage (14), the electricity on the brush carriage (14) are provided with the crank pulley (10) periphery cylinder body (1)
The conducting slip ring seat electrical contact of crank pulley (10) front end is brushed and is arranged at, the conducting slip ring seat passes through wire (11) and sets
Regulation motor (9) electrical connection being placed on bent axle (5) crank, the regulation motor (9) is by the gear that is arranged on output shaft
Engaged with the gear (4.1) of the eccentric gear (4).
2. automatically controlled eccentric gear type variable compression ratio engine according to claim 1, it is characterised in that：It is described conductive sliding
Ring seat includes slip ring (13) and base (12), the slip ring (13) and base (12) mutually insulated, and base (12) is mounted on
In the groove of crank pulley (10) front end, the brush electrical contact on slip ring (13) and brush carriage (14), slip ring (13) and wire
(11) connect.
3. automatically controlled eccentric gear type variable compression ratio engine according to claim 2, it is characterised in that：From the conduction
The wire (11) that slip-ring seat is drawn sequentially passes through wire guide (8), the leading along the setting of crank side set along axis on trunnion
Wire casing (6), it is connected with regulation motor (9) through the wire guide (8) set along connecting rod neck axis.
4. automatically controlled eccentric gear type variable compression ratio engine according to claim 1, it is characterised in that：The regulation electricity
Machine (9) is installed on the crank side of bent axle (5) by bolt.
5. automatically controlled eccentric gear type variable compression ratio engine according to claim 1, it is characterised in that：The eccentric tooth
The eccentric wheel (7.2) for taking turns (7) is half-turn toothing, and oil leab is provided with the location hole (7.3).
6. automatically controlled eccentric gear type variable compression ratio engine according to claim 2, it is characterised in that：It is described conductive sliding
Ring seat has double slip rings or many slip ring structures, and control module is provided with base.
7. automatically controlled eccentric gear type variable compression ratio engine according to claim 6, it is characterised in that：It is described conductive sliding
Electric capacity is provided with the base (12) of ring seat.
8. automatically controlled eccentric gear type variable compression ratio engine according to claim 2, it is characterised in that：The wire
(11) it is fixed on bent axle (5) using buckle or viscose glue.
9. automatically controlled eccentric gear type variable compression ratio engine according to claim 2, it is characterised in that：The brush branch
Frame (14) is integral type structure with conducting slip ring seat.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710229147.1A CN106930831A (en) | 2017-04-10 | 2017-04-10 | Automatically controlled eccentric gear type variable compression ratio engine |
| CN201711042173.XA CN107829818A (en) | 2017-04-10 | 2017-10-30 | Automatically controlled eccentric gear type variable compression ratio engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710229147.1A CN106930831A (en) | 2017-04-10 | 2017-04-10 | Automatically controlled eccentric gear type variable compression ratio engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106930831A true CN106930831A (en) | 2017-07-07 |
Family
ID=59425686
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710229147.1A Pending CN106930831A (en) | 2017-04-10 | 2017-04-10 | Automatically controlled eccentric gear type variable compression ratio engine |
| CN201711042173.XA Pending CN107829818A (en) | 2017-04-10 | 2017-10-30 | Automatically controlled eccentric gear type variable compression ratio engine |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711042173.XA Pending CN107829818A (en) | 2017-04-10 | 2017-10-30 | Automatically controlled eccentric gear type variable compression ratio engine |
Country Status (1)
| Country | Link |
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| CN (2) | CN106930831A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590849A (en) * | 2018-01-09 | 2018-09-28 | 西华大学 | A kind of toggle and control method of achievable Miller cycle |
| CN110265842A (en) * | 2019-06-12 | 2019-09-20 | 吉林大学 | Vertical Conductive Column Fly-by-wire System |
| CN110578601A (en) * | 2019-09-06 | 2019-12-17 | 燕山大学 | Connecting rod journal movable variable compression ratio mechanism |
| EP4183992A1 (en) * | 2021-11-23 | 2023-05-24 | Gomecsys B.V. | An eccentric member and an internal combustion engine |
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| US4860702A (en) * | 1988-03-21 | 1989-08-29 | Doundoulakis George J | Compression ratio control in reciprocating piston engines |
| EP0812383B1 (en) * | 1995-02-28 | 1998-12-16 | TK Design AG | Reciprocating piston type internal combustion engine with variable compression ratio |
| US6450136B1 (en) * | 2001-05-14 | 2002-09-17 | General Motors Corporation | Variable compression ratio control system for an internal combustion engine |
| CN201031942Y (en) * | 2007-06-14 | 2008-03-05 | 北京航空航天大学 | Satellite Gear Continuously Variable Transmission Based on Variable Crank Length Crank-rocker Mechanism |
| CN102214978A (en) * | 2010-04-02 | 2011-10-12 | 荣成市长顺电机厂 | Wire-wound three-phase asynchronous motor with external electric brush and external slide ring |
| JP5691960B2 (en) * | 2011-09-14 | 2015-04-01 | トヨタ自動車株式会社 | Internal combustion engine having a variable compression ratio mechanism |
| CN103047002B (en) * | 2012-12-17 | 2015-01-28 | 沈大兹 | Variable compression ratio device with connecting rod journals and eccentric sleeves |
| CN103850809A (en) * | 2012-12-01 | 2014-06-11 | 郑力铭 | Continuous variable compression ratio engine |
| CN103470382B (en) * | 2013-08-28 | 2016-03-02 | 长城汽车股份有限公司 | A kind of engine compression ratio controlling mechanism |
| CN205243639U (en) * | 2015-10-12 | 2016-05-18 | 叶小璐 | Adjust each stroke operating time's of internal -combustion engine eccentric gear adjusting device |
| CN106438062A (en) * | 2016-09-09 | 2017-02-22 | 王祖军 | A stepless variable compression ratio internal combustion engine |
| CN207609478U (en) * | 2017-04-10 | 2018-07-13 | 陈光明 | Automatically controlled eccentric gear type variable compression ratio engine |
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- 2017-04-10 CN CN201710229147.1A patent/CN106930831A/en active Pending
- 2017-10-30 CN CN201711042173.XA patent/CN107829818A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590849A (en) * | 2018-01-09 | 2018-09-28 | 西华大学 | A kind of toggle and control method of achievable Miller cycle |
| US11008937B2 (en) | 2018-01-09 | 2021-05-18 | Xihua University | Crank and connecting rod mechanism which can realize miller cycle and its control method |
| CN108590849B (en) * | 2018-01-09 | 2023-07-14 | 西华大学 | A crank-link mechanism capable of realizing Miller cycle and its control method |
| CN110265842A (en) * | 2019-06-12 | 2019-09-20 | 吉林大学 | Vertical Conductive Column Fly-by-wire System |
| CN110265842B (en) * | 2019-06-12 | 2024-04-26 | 吉林大学 | Vertical conductive column type telex system |
| CN110578601A (en) * | 2019-09-06 | 2019-12-17 | 燕山大学 | Connecting rod journal movable variable compression ratio mechanism |
| EP4183992A1 (en) * | 2021-11-23 | 2023-05-24 | Gomecsys B.V. | An eccentric member and an internal combustion engine |
| WO2023094039A1 (en) * | 2021-11-23 | 2023-06-01 | Gomecsys B.V. | An eccentric member and an internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107829818A (en) | 2018-03-23 |
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Application publication date: 20170707 |
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