CN104405518A - Self-regulating device for compression ratio - Google Patents
Self-regulating device for compression ratio Download PDFInfo
- Publication number
- CN104405518A CN104405518A CN201410558010.7A CN201410558010A CN104405518A CN 104405518 A CN104405518 A CN 104405518A CN 201410558010 A CN201410558010 A CN 201410558010A CN 104405518 A CN104405518 A CN 104405518A
- Authority
- CN
- China
- Prior art keywords
- piston
- moving body
- compression ratio
- cavity volume
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D15/00—Varying compression ratio
- F02D15/04—Varying compression ratio by alteration of volume of compression space without changing piston stroke
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/26—Pistons having combustion chamber in piston head
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/28—Other pistons with specially-shaped head
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)
Abstract
The invention relates to a self-regulating device for compression ratio and belongs to the technical field of an internal combustion engine. The self-regulating device for compression ratio comprises a cylinder, a cylinder cover, a piston, a piston rod, a connecting rod, a volume cavity, springs and moving elements, wherein the volume cavity is arranged in the piston; a first moving element is arranged at the left end of the lower part of the volume cavity; a second moving element is arranged at the right end of the lower part of the volume cavity; the first moving element and the second moving element are respectively connected with the inner surfaces of the volume cavity through a first spring and a second spring; outer wall surfaces of the first moving element and the second moving element are in sealing contact with the inner wall surfaces of the volume cavity; under a high-speed working condition, when pressure in a combustor is highest and combustion pressure is higher, the two moving elements are moved back to back and the volume of the combustor becomes big; under a low-speed working condition, when pressure in the combustor is highest and the combustion pressure is lower, the two moving elements are moved face to face and the volume of the combustor becomes small. The self-regulating device for compression ratio is reasonable in structure, simple in design and fit for the optimal design for the engine compression ratio.
Description
Technical field
The invention belongs to the compression ratio design apparatus of technical field of internal combustion engines, specifically, is a kind of compression ratio self-adjusting device.
Background technique
Compression ratio refers to that engine mixed gas body is by the degree compressed, with the ratio of the volume of cylinder (i.e. combustion chamber volume) after the cylinder total volume before compression and compression.At present, overwhelming majority automobile adopts so-called ' Reciprocating engine ', simply, be exactly in cylinder, a piston is had to do straight reciprocating motion again and again, and always circulating endlessly, so the movement travel scope of going round and beginning again at this and having it certain among continual working stroke.With regard to certain cylinder of motor, when the stroke of piston arrives minimum point, location point now is just called lower dead center, it is range volume that whole cylinder comprises the volume that firing chamber formed, when piston reverses direction motion, when arriving peak position, this location point is just called top dead center, the volume formed is the minimum situation of whole piston movement swept volume, and the compression ratio that need calculate is exactly the ratio of this range volume and minimum volume.The object of variable compression ratio is the fuel economy improving supercharged engine.In supercharged engine, in order to prevent pinking, its compression ratio is lower than naturally aspirated engine.When low pressure, the thermal efficiency reduces. and fuel economy is declined.Special in turbosupercharged engine due to supercharging level rise slowly under low compression ratio condition moment of torsion rise also very slow. form so-called turbo lag phenomenon.That is, motor is when low speed, and pressurization is delayed, wait until motor accelerate to certain rotating speed after pressurization system just play a role.In order to address this problem, variable compression ratio is important method.In other words. make compression ratio bring up to identical with naturally aspirated engine compression ratio or exceed at the running on the lower load of low pressure: on the other hand. suitably reduce compression ratio under the high load operating mode in high pressure-charging.In other words, along with the change of load regulates compression ratio continuously. the thermal efficiency can be improved from low-load in high whole condition range.But the compression ratio of available engine is immutable, because combustion chamber volume and displacement are all fixing parameters, reserve in the design.
Through existing literature search, find that number of patent application is 20092014360.5, name is called a kind of patented technology changing the mechanism of engine compression ratio, a kind of mechanism of variable compression ratio is proposed, make combustion efficiency higher, but what its compression ratio change needs were artificial goes to control, and can not regulate by teaching display stand.
Summary of the invention
The present invention is directed to above-mentioned deficiency, provide a kind of compression ratio self-adjusting device, the compression ratio of motor can self-control.
The present invention is achieved through the following technical solutions, the present invention includes cylinder, cylinder cap, piston, first piston ring, second piston ring, connecting rod, cavity volume, first moving body, second moving body, first spring, second spring, cylinder cap is arranged in the upper end of cylinder, piston is arranged in cylinder, cylinder, cylinder cap, piston forms firing chamber together, first piston ring, second piston ring is arranged in the top of piston, connecting rod and piston link together, cavity volume is arranged in piston, cavity volume is divided into upper and lower two-part, first moving body is arranged in the left end of cavity volume lower part, second moving body is arranged in the right-hand member of cavity volume lower part, first moving body, second moving body is respectively by the first spring, second spring is connected with the inside face of cavity volume, first moving body, the outer wall of the second moving body seals with the internal face of cavity volume and contacts, cavity volume, first moving body, the cross section of the second moving body is rectangular.
The invention has the beneficial effects as follows: the present invention is reasonable in design, structure is simple, and under different engine speed, the compression ratio of motor is variable, and the combustion efficiency of each operating mode motor is all higher.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of A-A section in Fig. 1;
Fig. 3 is the structural representation of B-B section in Fig. 1;
Label in accompanying drawing is respectively: 1, cylinder, and 2, cylinder cap, 3, piston, 4, first piston ring, the 5, second piston ring, 6, connecting rod, 7, cavity volume, the 8, first moving body, the 9, second moving body, the 10, first spring, the 11, second spring.
Embodiment
Elaborate to embodiments of the invention below in conjunction with accompanying drawing, the present embodiment, premised on technical solution of the present invention, give detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
embodiment
Embodiments of the invention as shown in Figure 1, the present invention includes cylinder 1, cylinder cap 2, piston 3, first piston ring 4, second piston ring 5, connecting rod 6, cavity volume 7, first moving body 8, second moving body 9, first spring 10, second spring 11, cylinder cap 2 is arranged in the upper end of cylinder 1, and piston 3 is arranged in cylinder 1, cylinder 1, cylinder cap 2, piston 3 forms firing chamber together, first piston ring 4, second piston ring 5 is arranged in the top of piston 3, connecting rod 6 and piston 3 link together, cavity volume 7 is arranged in piston 3, cavity volume 7 is divided into upper and lower two-part, first moving body 8 is arranged in the left end of cavity volume 7 lower part, second moving body 9 is arranged in the right-hand member of cavity volume 7 lower part, the first moving body 8, second moving body 9 is respectively by the first spring 10, second spring 11 is connected with the inside face of cavity volume 7, the first moving body 8, the outer wall of the second moving body 9 seals with the internal face of cavity volume 7 and contacts, cavity volume 7, first moving body 8, the cross section of the second moving body 9 is rectangular.
In implementation process of the present invention, the first moving body 8, second moving body 9 all can move left and right in cavity volume 7.When the rotating speed of motor is higher, when firing chamber maximum combustion pressure is larger, the first moving body 8, second moving body 9 moves dorsad and compresses the first spring 10 and the second spring 11, then engine compression ratio diminishes, discharge capacity becomes large, and the knocking tends of motor diminishes; When the rotating speed of motor is lower, when firing chamber maximum combustion pressure is less, under the elastic reaction of the first spring 10 and the second spring 11, the first moving body 8, second moving body 9 moves in opposite directions, then compression ratio becomes large, discharge capacity diminishes, and the combustion efficiency of motor is higher.
Claims (1)
1. a compression ratio self-adjusting device, comprises cylinder (1), cylinder cap (2), piston (3), first piston ring (4), second piston ring (5) and connecting rod (6), cylinder cap (2) is arranged in the upper end of cylinder (1), and piston (3) is arranged in cylinder (1), cylinder (1), cylinder cap (2), piston (3) forms firing chamber together, first piston ring (4), second piston ring (5) is arranged in the top of piston (3), and connecting rod (6) and piston (3) link together, and it is characterized in that, also comprise cavity volume (7), first moving body (8), second moving body (9), first spring (10), second spring (11), cavity volume (7) is arranged in piston (3), cavity volume (7) is divided into upper and lower two-part, first moving body (8) is arranged in the left end of cavity volume (7) lower part, second moving body (9) is arranged in the right-hand member of cavity volume (7) lower part, the first moving body (8), second moving body (9) is respectively by the first spring (10), second spring (11) is connected with the inside face of cavity volume (7), the first moving body (8), the outer wall of the second moving body (9) seals with the internal face of cavity volume (7) and contacts, cavity volume (7), first moving body (8), the cross section of the second moving body (9) is rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410558010.7A CN104405518A (en) | 2014-10-20 | 2014-10-20 | Self-regulating device for compression ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410558010.7A CN104405518A (en) | 2014-10-20 | 2014-10-20 | Self-regulating device for compression ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104405518A true CN104405518A (en) | 2015-03-11 |
Family
ID=52643172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410558010.7A Pending CN104405518A (en) | 2014-10-20 | 2014-10-20 | Self-regulating device for compression ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104405518A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020036570A3 (en) * | 2018-08-13 | 2020-04-16 | Олэксандр Фэдоровыч МАЛЭНКО | Device for regulating the compression ratio of an internal combustion piston engine |
-
2014
- 2014-10-20 CN CN201410558010.7A patent/CN104405518A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020036570A3 (en) * | 2018-08-13 | 2020-04-16 | Олэксандр Фэдоровыч МАЛЭНКО | Device for regulating the compression ratio of an internal combustion piston engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102926833B (en) | Mechanical type lever proportion regulating mechanism | |
| JP2017508098A (en) | Variable stroke compression ratio internal combustion engine | |
| CN104405519A (en) | Stretching type compression ratio variable device | |
| CN105508028A (en) | Slope-inlaid type rolling device | |
| CN104405502A (en) | Variable engine capacity system of air discharge pressure control type | |
| CN101705862B (en) | Arc cylinder internal-combustion engine | |
| CN104454181A (en) | Oil pressure controlled type engine displacement variable system | |
| CN104500244A (en) | Combustion chamber volume variable system with rotating mechanism | |
| CN104405518A (en) | Self-regulating device for compression ratio | |
| CN104454227A (en) | Piston system with volume cavity formed inside | |
| CN104405520A (en) | Movable multipart piston device | |
| CN104329182A (en) | Piston system with penetrating hole in top | |
| CN104500239A (en) | Suspended type compression ratio variable device | |
| CN102966394B (en) | Dual moving block synchronous movement type mechanical system for valve lift modulation of engine | |
| CN104405516A (en) | Compression ratio self-adaptation system | |
| CN202348439U (en) | Novel internal-combustion engine transmission device | |
| CN201358837Y (en) | Double-crankshaft internal combustion engine | |
| CN104405503A (en) | Symmetric piston system | |
| CN203321675U (en) | Variable compression ratio engine | |
| CN104454130A (en) | Combustor with mechanical device | |
| CN104500240A (en) | Piston device having volume cavity in top | |
| CN104500243A (en) | Through hole type system adjustable in compression ratio | |
| CN104595041A (en) | Compression ratio changeable system with rotating mechanism | |
| CN104500238A (en) | Combustion chamber with suspension device | |
| CN204152642U (en) | A kind of pto＝power take-off offset reciprocating piston type internal combustion motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150311 |