CN201539307U - Free piston engine with fixed stop points - Google Patents
Free piston engine with fixed stop points Download PDFInfo
- Publication number
- CN201539307U CN201539307U CN2009202177759U CN200920217775U CN201539307U CN 201539307 U CN201539307 U CN 201539307U CN 2009202177759 U CN2009202177759 U CN 2009202177759U CN 200920217775 U CN200920217775 U CN 200920217775U CN 201539307 U CN201539307 U CN 201539307U
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- Prior art keywords
- connecting rod
- unstable connecting
- piston
- fixed stopper
- free piston
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Abstract
The utility model discloses a free piston engine with fixed stop points, which comprises a piston, a cylinder, a movement structure component and a crankshaft. The piston is connected with or contacts with the movement structure component directly or indirectly through an elastomer. The piston is partially or fully equipped in the cylinder. The piston is rotatably connected with a connecting rod pin of the crankshaft through a first instable connecting rod. The movement structure component is rotatably connected with a connecting rod pin of the crankshaft through a second instable connecting rod. According to the utility model, as the instable connecting rod and the elastomer are set, the free piston engine can obtain fixed upper stop point and relatively fixed lower stop point through reasonably adjusting the lengths of the instable connecting rods, Hooke coefficient and precompression degree of the elastomer. The applicability, safety and reliability of the free piston engine are improved.
Description
Technical field
The utility model relates to engine art.
Background technique
As everyone knows, reciprocating internal combustion engine has had the history in more than 100 year, is a kind of extremely successful hot merit switch machine.But the human at present energy environment problem that is run into is had higher requirement to the hot merit switch machine.For this reason, reciprocating internal combustion engine just seems that volume is big, weight is big, efficient is low, low emission is poor.In the last few years, people began to pay attention to especially the research and development of free piston engine.Compare advantage such as free piston engine has the efficient height, emission performance is good, and volume is little, in light weight with reciprocating-piston engine.But the very large problem of uncontrollable and operational noise of the upper and lower stop of free-piston engine never is resolved, and general free-piston engine majority is two stroke engine, becomes the huge obstacle of free-piston engine commercial applications.Need to invent a kind of free-piston engine for this reason,, and both can do the two-stroke operation pattern, can do the four-cycle operation pattern again with the controllability and the applicability of raising free-piston engine.
Summary of the invention
In order to overcome above-mentioned defective, the utility model discloses a kind of fixed stopper point free piston engine.The purpose of this utility model is achieved in that
A kind of fixed stopper point free piston engine, comprise piston, cylinder, kinematic configuration part and bent axle, described piston is directly through elastomer or be connected with described kinematic configuration part or contact through elastomer indirectly, described piston portion or all be arranged in the described cylinder, described piston is rotationally connected through the pitman pin of first unstable connecting rod and described bent axle, and described kinematic configuration part is rotationally connected through the pitman pin of second unstable connecting rod and described bent axle.
The so-called unstable connecting rod of the utility model is meant can not bear pressure, can only bear the connecting rod of pulling force, as two traditional connecting rods, many connecting rods, chain, chain and rope etc.The unstable connecting rod that what is called has an elastic elongation structure is meant and is provided with the elastic region on unstable connecting rod.
The so-called kinematic configuration part of the utility model is meant the structure spare that can move, and is first-class as the piston and the hammer ram of the piston of internal-combustion engine, the piston of air compressor, the piston of oil hydraulic motor, reciprocal fluid pump.
Described kinematic configuration part is made as structure part piston, and structure part cylinder is set outside described structure spare piston, and described structure spare piston is made as power piston, and described structure spare cylinder is made as ram, and described bent axle is made as pto.
The so-called power piston of the utility model refers to the piston of internal-combustion engine, and so-called ram refers to the cylinder of internal-combustion engine.
Described kinematic configuration part is made as structure part piston, and structure part cylinder is set outside described structure spare piston, and described structure spare piston is made as load piston, and described structure spare cylinder is made as the load cylinder.
Bent axle in the utility model can be provided with flywheel gear, and described bent axle can be used as the power source of timing mechanism, perhaps as the signal source of controlling timing mechanism.Simultaneously, described bent axle also can be used as pto.
The so-called load piston of the utility model refers to the piston of external work done, as the piston of air compressor, and the piston of the piston of oil hydraulic motor and reciprocal fluid pump etc.; So-called load cylinder refers to and the corresponding cylinder body of load piston, as the cylinder of air compressor, and the cylinder body of oil hydraulic motor and the reciprocal cylinder body etc. of fluid pump.
Described first unstable connecting rod is rotationally connected with the same pitman pin or the different pitman pin of described bent axle with described second unstable connecting rod.
Described fixed stopper point free piston engine is made as two stroke engine, or described fixed stopper point free piston engine is made as four stroke engine.
Described fixed stopper point free piston engine is made as single-cylinder engine, or described fixed stopper point free piston engine is made as multicylinder engine.
The so-called multicylinder engine of the utility model is meant that each cylinder of described fixed stopper point free piston engine be arranged in parallel or is arranged in a crossed manner.
Described first unstable connecting rod is slidingly connected through slide block and described piston, and/or described second unstable connecting rod is slidingly connected through slide block and described kinematic configuration part.
Described elastomer is made as spring.During concrete enforcement, spring can be pneumatic spring.
Described first unstable connecting rod is made as two linkage type unstable connecting rods, many linkage types unstable connecting rod, chain type unstable connecting rod, rope chain type unstable connecting rod, cable type unstable connecting rod, has the unstable connecting rod of elastic elongation structure or the wherein combination of two or more unstable connecting rods, and described second unstable connecting rod is made as two linkage type unstable connecting rods, many linkage types unstable connecting rod, chain type unstable connecting rod, rope chain type unstable connecting rod, cable type unstable connecting rod, the unstable connecting rod with elastic elongation structure, telescopic unstable connecting rod or the wherein combination of two or more unstable connecting rods.
Described kinematic configuration part is made as the hammer ram head.
The utility model has following actively useful effect:
1, the utility model is because unstable connecting rod and elastomeric setting, length and elastomeric Hooke coefficient and precompression degree by reasonable adjustment unstable connecting rod, can make free-piston engine have definite top dead center and the relative lower dead center of determining, improve applicability, Security and the reliability of free-piston engine.
2, the utility model has reduced the noise of motor owing to elastomeric setting, does not have at unstable connecting rod under the situation of elastic structure, has realized that piston can improve the efficient and the feature of environmental protection of motor fast away from top dead center when the blast stroke begins.
3, the utility model has reduced the quality that connecting rod rotates owing to unstable connecting rod and elastomeric setting, and then reduces the quality of complete machine, has improved the stationarity of motor.
Description of drawings
Fig. 1 is the utility model one embodiment's a structural representation;
Fig. 2 is the structural representation that structure spare piston of the present utility model and structure part cylinder are made as power piston and ram respectively;
Fig. 3 is the structural representation that structure spare piston of the present utility model and structure part cylinder are made as load piston and load cylinder respectively;
Fig. 4 structural representation that to be first unstable connecting rod of the present utility model be connected with bent axle by different pitman pins with second unstable connecting rod;
Fig. 5 structural representation that to be first unstable connecting rod of the present utility model and second unstable connecting rod be slidingly connected with piston and kinematic configuration part respectively by slide block;
Fig. 6 is the structural representation that unstable connecting rod of the present utility model is set to many linkage types unstable connecting rod;
Fig. 7 is the structural representation that unstable connecting rod of the present utility model is set to the chain type unstable connecting rod;
Fig. 8 is the structural representation that unstable connecting rod of the present utility model is set to rope chain type unstable connecting rod;
Fig. 9 is the structural representation that unstable connecting rod of the present utility model is set to the cable type unstable connecting rod;
Figure 10 is the structural representation that unstable connecting rod of the present utility model is set to have the unstable connecting rod of elastic elongation structure;
Figure 11 is the structural representation that unstable connecting rod of the present utility model is set to telescopic unstable connecting rod;
Figure 12 is the structural representation that kinematic configuration part of the present utility model is set to the hammer ram head.
Accompanying drawing number
1. piston 2. cylinders 3. bent axles
11. kinematic configuration part 4. elastomers 110. structure part pistons
201. structure part cylinder 101. load piston 202. load cylinders
61. first unstable connecting rod, 62. second unstable connecting rods, 5. slide blocks
41. spring 111. hammer ram heads 601. two linkage type unstable connecting rods
602. many linkage types unstable connecting rod 603. chain type unstable connecting rods 604. rope chain type unstable connecting rods
605. cable type unstable connecting rod 1001. power pistons 2001. rams
606. have the unstable connecting rod 607. telescopic unstable connecting rods of elastic elongation structure
Embodiment
Fixed stopper point free piston engine as shown in Figure 1, comprise piston 1, cylinder 2, kinematic configuration part 11 and bent axle 3, described piston 1 is directly through elastomer 4 or be connected with described kinematic configuration part 11 or contact through elastomer 4 indirectly, described piston 1 partly or entirely is arranged in the described cylinder 2, described piston 1 is rotationally connected through the pitman pin of first unstable connecting rod 61 with described bent axle 3, and described kinematic configuration part 11 is rotationally connected through the pitman pin of second unstable connecting rod 62 with described bent axle 3.Described first unstable connecting rod 61 and described second unstable connecting rod 62 all are made as two linkage type unstable connecting rods 601.Described elastomer 4 is made as spring 41, and when specifically implementing, spring can be pneumatic spring.Described fixed stopper point free piston engine can be made as two stroke engine, and be not provided with flywheel gear on the bent axle 3 this moment; Described fixed stopper point free piston engine also can be made as four stroke engine, on the described bent axle 3 flywheel gear is set.Described fixed stopper point free piston engine is made as single-cylinder engine or multicylinder engine.
Fixed stopper point free piston engine as shown in Figure 2, be on the basis of Fig. 1, described kinematic configuration part 11 is made as structure part piston 110, structure part cylinder 201 is set outside described structure spare piston 110, described structure spare piston 110 is made as power piston 1001, described structure spare cylinder 201 is made as ram 2001, and described bent axle 3 is made as pto.During concrete enforcement, described structure spare piston 1001 is made as the piston of internal-combustion engine, and described structure spare cylinder 2001 is made as the cylinder of internal-combustion engine.Described first unstable connecting rod 61 and described second unstable connecting rod 62 are rotationally connected with the same pitman pin of described bent axle 3.
Fixed stopper point free piston engine as shown in Figure 3, be on the basis of Fig. 1, described kinematic configuration part 11 is made as structure part piston 110, structure part cylinder 201 is set outside described structure spare piston 110, described structure spare piston 110 is made as load piston 101, described structure spare cylinder 201 is made as load cylinder 202, and described bent axle 3 is made as the timing power source.During concrete enforcement, described load piston 101 is made as the piston of air compressor, and described load cylinder 202 is made as the cylinder of air compressor; Perhaps described load piston 101 is made as the piston of oil hydraulic motor, and described load cylinder 202 is made as the cylinder body of oil hydraulic motor.Described first unstable connecting rod 61 is connected with the same pitman pin of described bent axle 3 with described second unstable connecting rod 62.On this basis, described first unstable connecting rod 61 also can be rotationally connected with the different pitman pins of described bent axle 3 with described second unstable connecting rod 62.
Fixed stopper point free piston engine as shown in Figure 4 is on the basis of Fig. 2, and described first unstable connecting rod 61 is rotationally connected with the different pitman pins of described bent axle 3 with described second unstable connecting rod 62.
Fixed stopper point free piston engine as shown in Figure 5 is on the basis of Fig. 2, and described first unstable connecting rod 61 is slidingly connected through slide block 5 and described piston 1, and described second unstable connecting rod 62 is slidingly connected through slide block 5 and described kinematic configuration part 11.In addition, also can only described first unstable connecting rod 61 be slidingly connected through slide block 5 and described piston 1, perhaps only described second unstable connecting rod 62 be slidingly connected through slide block 5 and described kinematic configuration part 11.
Fixed stopper point free piston engine as shown in Figure 6, comprise piston 1, cylinder 2, kinematic configuration part 11 and bent axle 3, described piston 1 is directly through elastomer 4 or be connected with described kinematic configuration part 11 through elastomer 4 indirectly, described piston 1 partly or entirely is arranged in the described cylinder 2, described piston 1 is rotationally connected through the pitman pin of first unstable connecting rod 61 with described bent axle 3, described kinematic configuration part 11 is rotationally connected through the pitman pin of second unstable connecting rod 62 with described bent axle 3, described kinematic configuration part 11 is made as structure part piston 110, structure part cylinder 201 is set outside described structure spare piston 110, described structure spare piston 110 is made as power piston 1001, described structure spare cylinder 201 is made as ram 2001, described bent axle 3 is made as pto, and described first unstable connecting rod 61 and described second unstable connecting rod 62 are made as many linkage types unstable connecting rod 602 simultaneously.
Fixed stopper point free piston engine as shown in Figure 7 is on the basis of Fig. 6, and described first unstable connecting rod 61 and described second unstable connecting rod 62 are made as chain type unstable connecting rod 603 simultaneously.
Fixed stopper point free piston engine as shown in Figure 8 is on the basis of Fig. 6, and described first unstable connecting rod 61 and described second unstable connecting rod 62 are made as rope chain type unstable connecting rod 604 simultaneously.
Fixed stopper point free piston engine as shown in Figure 9 is on the basis of Fig. 6, and described first unstable connecting rod 61 and described second unstable connecting rod 62 are made as cable type unstable connecting rod 605 simultaneously.
Fixed stopper point free piston engine as shown in figure 10 is on the basis of Fig. 6, and described first unstable connecting rod 61 and described second unstable connecting rod 62 are made as the unstable connecting rod 606 with elastic elongation structure simultaneously.
Fixed stopper point free piston engine as shown in figure 11 is on the basis of Fig. 6, and described first unstable connecting rod 61 and described second unstable connecting rod 62 are made as telescopic unstable connecting rod 607 simultaneously.
In addition, described first unstable connecting rod 61 can be made as the combining form of above-mentioned two kinds or more of unstable connecting rods, and described second unstable connecting rod 62 also can be made as the combining form of above-mentioned two kinds or more of unstable connecting rods.
Fixed stopper point free piston engine as shown in figure 12 is on the basis of Fig. 1, and described kinematic configuration part 11 is made as hammer ram head 111.
Claims (10)
1. fixed stopper point free piston engine, comprise piston (1), cylinder (2), kinematic configuration part (11) and bent axle (3), it is characterized in that: described piston (1) is directly through elastomer (4) or be connected with described kinematic configuration part (11) through elastomer (4) indirectly, described piston (1) partly or entirely is arranged in the described cylinder (2), described piston (1) is rotationally connected through the pitman pin of first unstable connecting rod (61) with described bent axle (3), and described kinematic configuration part (11) is rotationally connected through the pitman pin of second unstable connecting rod (62) with described bent axle (3).
2. fixed stopper point free piston engine according to claim 1, it is characterized in that: described kinematic configuration part (11) is made as structure part piston (110), structure part cylinder (201) is set outside described structure spare piston (110), described structure spare piston (110) is made as power piston (1001), described structure spare cylinder (201) is made as ram (2001), and described bent axle (3) is made as pto.
3. fixed stopper point free piston engine according to claim 1, it is characterized in that: described kinematic configuration part (11) is made as structure part piston (110), structure part cylinder (201) is set outside described structure spare piston (110), described structure spare piston (110) is made as load piston (101), and described structure spare cylinder (201) is made as load cylinder (202).
4. fixed stopper point free piston engine according to claim 1, it is characterized in that: described first unstable connecting rod (61) is rotationally connected with the same pitman pin or the different pitman pin of described bent axle (3) with described second unstable connecting rod (62).
5. fixed stopper point free piston engine according to claim 1, it is characterized in that: described fixed stopper point free piston engine is made as two stroke engine, or described fixed stopper point free piston engine is made as four stroke engine.
6. fixed stopper point free piston engine according to claim 1, it is characterized in that: described fixed stopper point free piston engine is made as single-cylinder engine, or described fixed stopper point free piston engine is made as multicylinder engine.
7. fixed stopper point free piston engine according to claim 1, it is characterized in that: described first unstable connecting rod (61) is slidingly connected through slide block (5) and described piston (1), and/or described second unstable connecting rod (62) is slidingly connected through slide block (5) and described kinematic configuration part (11).
8. fixed stopper point free piston engine according to claim 1, it is characterized in that: described elastomer (4) is made as spring (41).
9. fixed stopper point free piston engine according to claim 1, it is characterized in that: described first unstable connecting rod (61) is made as two linkage type unstable connecting rods (601), many linkage types unstable connecting rod (602), chain type unstable connecting rod (603), rope chain type unstable connecting rod (604), cable type unstable connecting rod (605), unstable connecting rod (606) with elastic elongation structure, telescopic unstable connecting rod (607) or the wherein combination of two or more unstable connecting rods, described second unstable connecting rod (62) are made as two linkage type unstable connecting rods (601), many linkage types unstable connecting rod (602), chain type unstable connecting rod (603), rope chain type unstable connecting rod (604), cable type unstable connecting rod (605), unstable connecting rod (606) with elastic elongation structure, telescopic unstable connecting rod (607) or the wherein combination of two or more unstable connecting rods.
10. fixed stopper point free piston engine according to claim 1, it is characterized in that: described kinematic configuration part (11) is made as hammer ram head (111).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202177759U CN201539307U (en) | 2009-09-25 | 2009-09-29 | Free piston engine with fixed stop points |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920217060.3 | 2009-09-25 | ||
| CN2009202177759U CN201539307U (en) | 2009-09-25 | 2009-09-29 | Free piston engine with fixed stop points |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201539307U true CN201539307U (en) | 2010-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202177759U Expired - Lifetime CN201539307U (en) | 2009-09-25 | 2009-09-29 | Free piston engine with fixed stop points |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201539307U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104796036A (en) * | 2015-05-06 | 2015-07-22 | 西安交通大学 | Piezoelectric-piston type actuation device with three-stage displacement amplifying structure and actuation method of piezoelectric-piston type actuation device |
-
2009
- 2009-09-29 CN CN2009202177759U patent/CN201539307U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104796036A (en) * | 2015-05-06 | 2015-07-22 | 西安交通大学 | Piezoelectric-piston type actuation device with three-stage displacement amplifying structure and actuation method of piezoelectric-piston type actuation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100804 Effective date of abandoning: 20090929 |
|
| RGAV | Abandon patent right to avoid regrant |