CN104595041A - Compression ratio changeable system with rotating mechanism - Google Patents
Compression ratio changeable system with rotating mechanism Download PDFInfo
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- CN104595041A CN104595041A CN201410697280.6A CN201410697280A CN104595041A CN 104595041 A CN104595041 A CN 104595041A CN 201410697280 A CN201410697280 A CN 201410697280A CN 104595041 A CN104595041 A CN 104595041A
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Abstract
The invention discloses a compression ratio changeable system with a rotating mechanism, and belongs to the technical field of internal combustion engines. The compression ratio changeable system comprises air cylinders, an air cylinder cover, pistons, piston rings, a connecting rod, a volume cavity, a spring, rotating bodies and a rotating shaft, the volume cavity is formed in the tops of the pistons, the rotating shaft is embedded into the pistons, the rotating bodies are arranged inside the volume cavity and fixedly connected with the rotating shaft, and the rotating bodies are connected together through the spring. Under the working condition of a high speed, when the maximum combustion pressure inside a combustion chamber is high, the two rotating bodies rotate oppositely, and therefore the volume of the combustion chamber becomes larger; under the working condition of a low speed, when the minimum combustion pressure inside the combustion chamber is low, the two rotating bodies rotate back to back, and therefore the volume of the combustion chamber becomes smaller. The compression ratio changeable system is reasonable in structure, simple in design and suitable for designing pistons of engines in an optimization mode.
Description
Technical field
The invention belongs to the compression ratio design apparatus of technical field of internal combustion engines, specifically, is a kind of alterable compression ratio system with rotating machinery.
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 alterable compression ratio system with rotating machinery, 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 and the second solid of rotation, 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 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 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.
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 and the second solid of rotation 11, cylinder cap 2 is arranged in the upper end of cylinder 1, 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 the top of piston 3, running shaft 8 is embedded in piston 3, first solid of rotation 9, second solid of rotation 11 to be arranged in cavity volume 7 and to contact with running shaft 8, first solid of rotation 9 is linked together by spring 10 and the second solid of rotation 11, the longitudinal section of cavity volume 7 is arc-shaped, first solid of rotation 9, the cross section of the second solid of rotation 11 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. the alterable compression ratio system with rotating machinery, comprise 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), 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, it is characterized in that, also comprise cavity volume (7), running shaft (8), first solid of rotation (9), spring (10) and the second solid of rotation (11), cavity volume (7) is arranged in the top of piston (3), running shaft (8) is embedded in piston (3), first solid of rotation (9), second solid of rotation (11) to be arranged in cavity volume (7) and to contact with running shaft (8), first solid of rotation (9) is linked together by spring (10) and the second solid of rotation (11).
2. the alterable compression ratio system with rotating machinery 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) is rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410697280.6A CN104595041A (en) | 2014-11-26 | 2014-11-26 | Compression ratio changeable system with rotating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410697280.6A CN104595041A (en) | 2014-11-26 | 2014-11-26 | Compression ratio changeable system with rotating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104595041A true CN104595041A (en) | 2015-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410697280.6A Pending CN104595041A (en) | 2014-11-26 | 2014-11-26 | Compression ratio changeable system with rotating mechanism |
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| CN (1) | CN104595041A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09170436A (en) * | 1995-12-20 | 1997-06-30 | Isuzu Motors Ltd | Structure of piston with thermal insulation combustion chamber |
| JPH10205333A (en) * | 1997-01-21 | 1998-08-04 | Isuzu Ceramics Kenkyusho:Kk | Structure of combustion chamber in engine |
| JP2000136724A (en) * | 1998-11-04 | 2000-05-16 | Isuzu Ceramics Res Inst Co Ltd | Gas engine with main chamber capacity variable means |
| CN101333970A (en) * | 2008-07-29 | 2008-12-31 | 奇瑞汽车股份有限公司 | Variable compression ratio engines |
| JP2012052484A (en) * | 2010-09-02 | 2012-03-15 | Toyota Motor Corp | Internal combustion engine |
| JP2012229642A (en) * | 2011-04-26 | 2012-11-22 | Nissan Motor Co Ltd | Variable compression ratio device for internal combustion engine |
-
2014
- 2014-11-26 CN CN201410697280.6A patent/CN104595041A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09170436A (en) * | 1995-12-20 | 1997-06-30 | Isuzu Motors Ltd | Structure of piston with thermal insulation combustion chamber |
| JPH10205333A (en) * | 1997-01-21 | 1998-08-04 | Isuzu Ceramics Kenkyusho:Kk | Structure of combustion chamber in engine |
| JP2000136724A (en) * | 1998-11-04 | 2000-05-16 | Isuzu Ceramics Res Inst Co Ltd | Gas engine with main chamber capacity variable means |
| CN101333970A (en) * | 2008-07-29 | 2008-12-31 | 奇瑞汽车股份有限公司 | Variable compression ratio engines |
| JP2012052484A (en) * | 2010-09-02 | 2012-03-15 | Toyota Motor Corp | Internal combustion engine |
| JP2012229642A (en) * | 2011-04-26 | 2012-11-22 | Nissan Motor Co Ltd | Variable compression ratio device for internal combustion engine |
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| C06 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150506 |