CN104500243A - Through hole type system adjustable in compression ratio - Google Patents
Through hole type system adjustable in compression ratio Download PDFInfo
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- CN104500243A CN104500243A CN201410692941.6A CN201410692941A CN104500243A CN 104500243 A CN104500243 A CN 104500243A CN 201410692941 A CN201410692941 A CN 201410692941A CN 104500243 A CN104500243 A CN 104500243A
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Abstract
The invention belongs to the technical field of internal combustion engines and relates to a through hole type system adjustable in compression ratio. The through hole type system adjustable in compression ratio comprises an air cylinder, a cylinder cover, a piston, piston rings, a connecting rod, a volume chamber, a spring, two rotators and a rotating shaft, wherein the volume chamber is arranged inside the piston, left and right ends of the volume chamber are communicated with the top of the piston through a first through hole and a second through hole respectively, the rotating shaft is inlaid in the piston, and the rotators are arranged in the volume chamber, are fixedly connected with the rotating shaft and are connected with each other through the spring. In a high-speed working condition, when maximum combustion pressure in a combustion chamber is high, the two rotators rotate face to face, and the volume of the combustion chamber becomes large; in a low-speed working condition, when maximum combustion pressure in the combustion chamber is low, the two rotators rotate back to back, and the volume of the combustion chamber becomes small. The through hole type system adjustable in compression ratio is reasonable in structure, simple in design and applicable to optimized design of engine pistons.
Description
Technical field
The invention belongs to the compression ratio design apparatus of technical field of internal combustion engines, specifically, is a kind of thru hole type compression ratio adjustable system.
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 thru hole type compression ratio adjustable system, 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, running shaft, first solid of rotation, spring, second solid of rotation, first open-work, second open-work, 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 the inside of piston, the two ends, left and right of cavity volume are respectively by the first open-work, second open-work is connected with the top of piston, running shaft is embedded in piston, first solid of rotation, second solid of rotation to be arranged in cavity volume and to contact with running shaft, first solid of rotation is linked together by spring and the second solid of rotation.
Further, the longitudinal section of cavity volume is arc-shaped in the present invention, and the cross section of the first solid of rotation, the second solid of rotation, the first open-work, the second open-work 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, 8, running shaft, the 9, first solid of rotation, 10, spring, the 11, second solid of rotation, the 12, first open-work, the 13, second open-work.
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 to Figure 3, 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, running shaft 8, first solid of rotation 9, spring 10, second solid of rotation 11, first open-work 12 and the second open-work 13, 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 cavity volume 7 is arranged in the inside of piston 3, and the two ends, left and right of cavity volume 7 are respectively by the first open-work 12, second open-work 13 is connected with the top of piston 3, and running shaft 8 is embedded in piston 3, the first solid of rotation 9, second solid of rotation 11 to be arranged in cavity volume 7 and to contact with running shaft 8, and the first solid of rotation 9 is linked together by spring 10 and the second solid of rotation 11, and the longitudinal section of cavity volume 7 is arc-shaped, the first solid of rotation 9, second solid of rotation 11, first open-work 12, the cross section of the second open-work 13 is rectangular.
In implementation process of the present invention, the first solid of rotation 9, second solid of rotation 11 all can rotate in cavity volume 7.When the rotating speed of motor is higher, when firing chamber maximum combustion pressure is larger, the first solid of rotation 9, second solid of rotation 11 in opposite directions pin rotates and Compress Spring 10, then engine chamber becomes large, compression ratio diminishes, 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 spring 10, the first solid of rotation 9, second solid of rotation 11 dorsad pin revolves, then engine chamber diminishes, compression ratio becomes large, and the combustion efficiency of motor is higher.
Claims (2)
1. a thru hole type compression ratio adjustable system, 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), running shaft (8), first solid of rotation (9), spring (10), second solid of rotation (11), first open-work (12) and the second open-work (13), cavity volume (7) is arranged in the inside of piston (3), and the two ends, left and right of cavity volume (7) are respectively by the first open-work (12), second open-work (13) is connected with the top of piston (3), and running shaft (8) is embedded in piston (3), the first solid of rotation (9), second solid of rotation (11) to be arranged in cavity volume (7) and to contact with running shaft (8), and the first solid of rotation (9) is linked together by spring (10) and the second solid of rotation (11).
2. thru hole type compression ratio adjustable system according to claim 1, it is characterized in that, the longitudinal section of cavity volume (7) is arc-shaped, and the cross section of the first solid of rotation (9), the second solid of rotation (11), the first open-work (12), the second open-work (13) is rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410692941.6A CN104500243A (en) | 2014-11-26 | 2014-11-26 | Through hole type system adjustable in compression ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410692941.6A CN104500243A (en) | 2014-11-26 | 2014-11-26 | Through hole type system adjustable in compression ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104500243A true CN104500243A (en) | 2015-04-08 |
Family
ID=52941682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410692941.6A Pending CN104500243A (en) | 2014-11-26 | 2014-11-26 | Through hole type system adjustable in compression ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104500243A (en) |
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2014
- 2014-11-26 CN CN201410692941.6A patent/CN104500243A/en active Pending
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150408 |