CN203098048U - Double-combustor reciprocating engine structure - Google Patents
Double-combustor reciprocating engine structure Download PDFInfo
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- CN203098048U CN203098048U CN 201320105293 CN201320105293U CN203098048U CN 203098048 U CN203098048 U CN 203098048U CN 201320105293 CN201320105293 CN 201320105293 CN 201320105293 U CN201320105293 U CN 201320105293U CN 203098048 U CN203098048 U CN 203098048U
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Abstract
The utility model discloses a double-combustor reciprocating engine structure which is characterized in that more than two cylinders (3) are connected in series to form an assembly through a connection rod (2), and each cylinder (3) in the assembly is provided with a piston (4) which divides each cylinder (3) into two combustion chambers. Each combustion chamber is provided with an ignition device which can achieve ignition of two sides of the piston (4) in each cylinder (3). According to the double-combustor reciprocating engine structure, both two sides of the pistons can be utilized so that power of one cylinder of an engine is double times of power of a cylinder before improvement. Only a set of air absorption, air discharging and ignition device is added, when the cylinders are connected in series for being used, a crankshaft can be shared by the cylinders, the number of crankshafts is reduced, and therefore manufacturing cost is greatly reduced, more components are simplified, and faults are reduced.
Description
Technical field
The utility model relates to a kind of double combustion chamber reciprocating engine structure, belongs to technical field of engines.
Background technique
Reciprocating engine also is Reciprocating engine, is a kind of motor that utilizes one or more piston pressure to be converted to rotation function.The most frequently used reciprocating engine utilizes gasoline or diesel fuel to produce pressure, and all in cylinder, fuel-air mixture is injected in it each piston usually, is lighted then.Hold piston reciprocates in the cylinder.The electric plug (being commonly called as sparking plug) of lighting mixed gas is housed on the cylinder head, and the inlet and outlet door.Cylinder temperature is very high during engine operation, thus many radiating fin are arranged on the casing outer wall, in order to enlarge heat diffusion area.Hot gas expands, and promotes piston and moves backward.Thereby this straight line motion of piston converts circular movement to by connecting rod and bent axle and produces Driving force.Connecting rod is used for connecting piston and bent axle.It is reciprocating in cylinder that piston bears gaseous-pressure, and by connecting rod this motion is transformed into rotatablely moving of bent axle.Bent axle is the parts of engine output.When bent axle rotates, drive the propeller cavitation rotation by retarder and produce pulling force.With the exception of this, bent axle also will drive some annexes (as various oil pumps, generator etc.).Valve mechanism is used for controlling intake valve, exhaust valve timing opens and closes.Tradition four-journey reciprocating piston engine, engine changeed for two weeks, each cylinder just can finish once carry out, compression, acting and exhaust process.Under the identical situation of single chamber volume, cylinder number multiple-motor power more is big more.Yet the increase of number of cylinders if adopt a bent axle, can make bent axle load excessive and twisted off like this, if adopt many bent axles, need take too much space, also make the deadweight of motor increase greatly, and too much member has also increased the incidence rate of fault and the difficulty of maintenance.Because the bent axle manufacture cost is very high, many bent axles can increase the cost of motor greatly simultaneously.Therefore, existing piston formula motor still is not ideal enough.
Summary of the invention
The purpose of this utility model is, a kind of double combustion chamber reciprocating engine structure is provided, make the mechanical efficiency of single cylinder higher, and need not increase bent axle, can reduce engine dry weight, avoid because of member too much causes the rate of fault height, also can not increase the manufacture cost of motor simultaneously, thereby overcome the deficiencies in the prior art.
For realizing the purpose of this utility model, the utility model is that traditional reciprocating engine is improved the structure that forms, this is improved one's methods is such: this reciprocating engine comprises bent axle, connecting rod and plural cylinder, bent axle links to each other with connecting rod, plural cylinder is connected in series assembly of formation by connecting rod, each cylinder is provided with a piston in the assembly, each piston is divided into two combustion chambers with cylinder, and two combustion chambers are provided with the piston both sides ignition that an ignition mechanism can realize that a cylinder is interior separately.Plural described assembly is connected in parallel on the bent axle forms multicylinder engine, adopt like this that many connecting rods and a plurality of cylinder are common to promote a bent axle, need not increase the effect that bent axle just can improve motor.
Thinking based on aforesaid method, double combustion chamber of the present utility model reciprocating engine structure, comprise bent axle, connecting rod, cylinder, piston and ignition mechanism, one end of connecting rod links to each other with bent axle, the other end penetrates in the cylinder and connects piston, piston is can be in cylinder reciprocating and promote the bent axle acting by connecting rod, the quantity of wherein said cylinder is more than two, and with the series connection mode be located on the connecting rod, described piston is fixed on the described connecting rod, and this piston is equipped with one in each cylinder; Each piston is divided into combustion chamber one and combustion chamber two with each cylinder; Described combustion chamber one and combustion chamber two are respectively equipped with two valves and are used to control the air inlet and exhaust valve of these two valves.The air inlet and exhaust valve of each cylinder comprises suction valve two, the outlet valve two of suction valve one, outlet valve one and the combustion chamber two of combustion chamber one.
Cylinder of the present utility model is connected on the connecting rod, and an end of connecting rod is connected on the bent axle, and another passes each cylinder successively.For the conformity of the direction that guarantees link motion, the utility model has adopted two kinds of schemes:
First kind of scheme is to be provided with a cylinder on the connecting rod between bent axle and first cylinder, is provided with a positioning piston that is used for the moving direction of control link in the cylinder.In this case, the internal diameter of positioning piston is slightly less than the internal diameter of cylinder, and positioning piston can only carry out folk prescription to to-and-fro motion in cylinder, therefore connecting rod is also limited and can only carry out unidirectional to-and-fro motion, and the motion of connecting rod in each cylinder is consistent.In addition, when adopting this structure, as a kind of preferred version, cylinder is the open type structure, causes energy consumption and equipment consume to avoid positioning piston to produce air pressure within it.
Another scheme is to be provided with an additional cylinder on the connecting rod between bent axle and first cylinder, is provided with an additional combustion chamber and additional piston in the additional cylinder, and additional piston can be reciprocating in the additional combustion chamber; The additional combustion chamber also is provided with suction valve one and outlet valve one.This scheme is the improvement of going up a kind of scheme, this is because the cylinder and the positioning piston of last a kind of scheme have occupied more space, and can only play the effect of a direction location, therefore change cylinder into an additional cylinder that has only a combustion chamber, so just this part space is also used, additional piston not only can play the effect of direction location, the generation Driving force of can also doing work when reciprocating in additional cylinder.
Because the utility model makes the structure of having only a combustion chamber in the traditional cylinder into the structure of two combustion chambers of a cylinder, therefore all increased a suction valve and an outlet valve on each cylinder, each cylinder has also increased an ignition mechanism so that two combustion chambers can be lighted a fire.Simultaneously, because each cylinder of the present utility model is to be connected on the connecting rod, each cylinder work is synchronous, therefore need the suction valve of each cylinder of control and the work synchronism of outlet valve, for this reason, the utility model also is provided with two outer shafts parallel with described connecting rod in the cylinder external symmetry, and outer shaft is near cylinder and be provided with the air valve start-stop device of the opening and closing of the described air inlet and exhaust valve of may command on the valve of each cylinder next door.Can guarantee the air inlet and the exhaust synchronism of each each working stroke of cylinder like this.Aforesaid outer shaft and aforementioned bent axle are orthogonal, and the two is provided with the change gear device and realizes synergic rotation, and outer shaft when rotating a week bent axle rotated for two weeks.
Further this air valve start-stop device valve edge of being included in each cylinder is provided with is positioned at the cam that is used to control each valve air inlet and exhaust valve on the disk and this disk on the described outer shaft.The external frame of cam is a circular arc camber, and cam occupies the position of quadrant on disk, thereby guarantees disk in the whole process of rotating quadrant, and cam can both continue suction valve or outlet valve are backed down.Stagger in the suction port of same cylinder and the position of the cam of relief opening on disk, the distance that staggers is determined according to the Time Calculation that each air inlet and exhaust valve opening and closing time and outer shaft rotate a week, also can determine according to simple test.When all disks during along with the outer shaft coaxial rotation, the cam on each disk can back down successively or break away from corresponding suction valve or outlet valve, thereby realizes the synchronism of each cylinder air intake-exhaust.
In addition, because connecting rod is in the hot environment all the time in this engine working process, so the end top away from bent axle is provided with cooling nozzle on the utility model connecting rod, is provided with the water-cooling tube of U type in connecting rod.The one end water inlet of U type water-cooling tube, the other end water outlet guarantees the circulation of cooling water in connecting rod, to reduce the connecting rod operating temperature.
The utility model can all use the two sides of piston, piston is connected this one side of drive link and the space of cylinder composition another one fuel combustion, also the periodic duty by air-breathing, compression, acting and four processes of exhaust produces power, the twice before thereby the power that a cylinder that makes motor produces is equivalent to not improve that is to say that a motor has just become two motors; And we have just increased that a cover is air-breathing, the device of exhaust and igniting.When we are connected in series several cylinders when using, piston in several cylinders is to be on the same connecting rod (drive link) at this moment, so just can a shared bent axle, reduced the number of bent axle, thereby reduced the cost of making greatly, simplify more member, reduced the generation of fault.The utility model can improve the number of an engine cylinder greatly.If this motor is used on the helicopter, meeting is the space layout of reasonable use helicopter more, and weight reduces greatly, and cost reduces, and fault reduces, and also can reduce greatly compared with present helicopter engine oil consumption.
Description of drawings
Fig. 1 is an engine cylinder assembly of the present utility model schematic representation in parallel;
Fig. 2 is first kind of structural type schematic representation of motor of the present utility model;
Fig. 3 is second kind of structural type schematic representation of motor of the present utility model;
Fig. 4 is a cylinder structure schematic representation of the present utility model;
Fig. 5 is an air valve start-stop device structural representation of the present utility model;
Fig. 6 is an air valve start-stop device floor map of the present utility model;
Fig. 7 is a cooling water system structural representation of the present utility model;
Fig. 8 is the cylinder work first stroke schematic representation of the present utility model;
Fig. 9 is the cylinder work second stroke schematic representation of the present utility model;
Figure 10 is a cylinder work third trip schematic representation of the present utility model;
Figure 11 is a cylinder work fourth line journey schematic representation of the present utility model.
Description of reference numerals: 1-bent axle, 2-connecting rod, 3-cylinder, 31-combustion chamber one, 32-combustion chamber two, 4-piston, 5-cylinder, 51-positioning piston, 6-additional combustion chamber, 61-adds piston, 7-air inlet and exhaust valve, 71-suction valve one, 72-outlet valve one, 73-suction valve two, 74-outlet valve two, 8-outer shaft, the 9-disk, 91-cam, 10-cooling nozzle, the 11-water-cooling tube, 12-valve, 13-change gear device.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
See Fig. 1, Fig. 1 has showed engine pack of the present utility model simplified schematic diagram in parallel, this structure is made up of a plurality of cylinder assemblies, the assembly that this cylinder assembly is composed in series plural cylinder 3 by a connecting rod 2, a piston 4 that is fixed on the connecting rod 2 is arranged in each cylinder 3, the utility model is connected in parallel on the cylinder assembly more than two groups on the bent axle, thereby can improve the effect of motor greatly.
See Fig. 2 and Fig. 3, Fig. 2 and Fig. 3 have showed two kinds of structural types of motor of the present utility model.These two kinds of identical parts of structural type comprise bent axle 1, connecting rod 2, cylinder 3, piston 4 and ignition mechanism, one end of connecting rod 2 links to each other with bent axle 1, and (connecting rod 2 can be one, also can adopt many connecting rods 2 to constitute the parallel-connection structure motor as shown in Figure 1), connecting rod 2 the other ends penetrate in the cylinder 3 and connect piston 4, piston 4 is can be in cylinder 3 reciprocating and promote bent axles 1 acting by connecting rod 2, the quantity of cylinder 3 is more than two, and is located at cylinder assembly of formation on the connecting rod 2 in the mode of series connection.See Fig. 4, in cylinder 3 of the present utility model, piston 4 is fixed on the connecting rod 2, and this piston 4 is equipped with one in each cylinder 3; Each piston 4 is divided into combustion chamber 1 and combustion chamber 2 32 with each cylinder 3; Described combustion chamber 1 and combustion chamber 2 32 are respectively equipped with two valves 12 and are used to control the air inlet and exhaust valve 7 of these two valves 12.Can also see that from Fig. 8～Figure 11 the air inlet and exhaust valve 7 of each cylinder 3 comprises suction valve 2 73, the outlet valve 2 74 of the suction valve 1 of combustion chamber 1, outlet valve 1 and combustion chamber 2 32.
Get back to Fig. 2 and Fig. 3, between bent axle 1 and first cylinder 3, conformity in order to ensure connecting rod 2 moving direction, the utility model has adopted two kinds of schemes, first kind of scheme as shown in Figure 2, on the connecting rod 2 between bent axle 1 and first cylinder 3, be provided with a cylinder 5, be provided with a positioning piston 51 that is used for the moving direction of control link 2 in the cylinder 5.This cylinder 5 is the open type structure.The internal diameter of this scheme positioning piston 51 is slightly less than the internal diameter of cylinder 5, positioning piston 51 can only carry out folk prescription to to-and-fro motion in cylinder 5, therefore connecting rod 2 is also limited and to carry out unidirectional to-and-fro motion, the motion of connecting rod 2 in each cylinder 3 is consistent.
Second kind of scheme is the improvement of first kind of scheme, as shown in Figure 3, be provided with an additional cylinder 6 on the connecting rod 2 between bent axle 1 and first cylinder 3, be provided with an additional combustion chamber 61 and additional piston 62 in the additional cylinder 6, additional piston 62 can be reciprocating in additional combustion chamber 61; Additional combustion chamber 61 also is provided with suction valve 1 and outlet valve 1.Change cylinder 5 into an additional cylinder 6 that has only a combustion chamber this moment, so just this part space also used, and additional piston 62 not only can play the effect that direction is located, the generation Driving force of can also doing work when reciprocating adding 6 li in cylinder.
During enforcement Fig. 2 and assembly shown in Figure 3 are connected in parallel on the bent axle 1 according to mode shown in Figure 1, have just constituted the agent structure of motor of the present utility model.
Because it is the structure that a cylinder has two combustion chambers that the utility model has only the architecture advances of a combustion chamber with a traditional cylinder, so also corresponding air inlet system and exhaust system and the ignition mechanism of having increased.Synchronous for the air inlet system and exhaust system work that makes each cylinder 3 of the present utility model, the utility model has also adopted the device of the intake and exhaust of each cylinder 3 of cover control.It is provided with two outer shafts 8 parallel with connecting rod 2 in cylinder 3 external symmetrys, and outer shaft 8 is near cylinders 3 and be provided with the air valve start-stop device of the opening and closing of the described air inlet and exhaust valve 7 of may command on valve 12 next doors of each cylinder 3; This outer shaft 8 is orthogonal with bent axle 1, and the two is provided with change gear device 13 and realizes synergic rotation, and outer shaft 8 when rotating a week bent axle 10 rotated for two weeks.As shown in Figures 2 and 3, the change gear device is two basin teeth that are driven by it with the coaxial master gear of bent axle 1 and its both sides by, thereby these two basin teeth can drive the synergic rotation that the tooth cover that is enclosed within on the outer shaft 8 is realized outer shaft 8 and bent axle 1.Be because cylinder 3 work one-period bent axles 1 rotated for two weeks, and outer shaft 1 rotates a week, thus the change gear device should make bent axle 1 rotate for two weeks the time outer shaft 1 rotate a week.
As shown in Figure 5 and Figure 6, the air valve start-stop device that the utility model is used to control the air inlet system and exhaust system of cylinder 3 is included in that the valve edge of each cylinder 3 is provided with is positioned at the cam 91 that is used to control each valve air inlet and exhaust valve on the disk 9 and this disk 9 on the outer shaft 8, the external frame of this cam 91 is a circular arc camber, and this cam 91 occupies the position of quadrant on disk 9.
As shown in Figure 7, the end top away from bent axle 1 on connecting rod 2 is provided with cooling nozzle 10, is provided with the water-cooling tube 11 of U type in connecting rod 2.Cooling water enters connecting rod 2 inside from the cooling nozzle 10 of connecting rod 2, through the circulation of water-cooling tube 11, flows out from cooling nozzle 10 again at last, realizes the cooling to connecting rod 2.
Certainly, more than be concrete exemplary applications of the present utility model, the utility model also has other mode of execution, and all employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop within the desired protection domain of the utility model.
Claims (8)
1. double combustion chamber's reciprocating engine structure, comprise bent axle (1), connecting rod (2), cylinder (3), piston (4) and ignition mechanism, one end of connecting rod (2) links to each other with bent axle (1), the other end penetrates in the cylinder (3) and connects piston (4), piston (4) is can be in cylinder (3) reciprocating and promote bent axle (1) acting by connecting rod (2), it is characterized in that: the quantity of described cylinder (3) is more than two, and is located at upward cylinder assembly of formation of connecting rod (2) in the mode of series connection; Described piston (4) is fixed on the described connecting rod (2), and this piston (4) is equipped with one in each cylinder (3); Each piston (4) is divided into combustion chamber one (31) and combustion chamber two (32) with each cylinder (3); Described combustion chamber one (31) and combustion chamber two (32) are respectively equipped with two valves (12) and are used to control the air inlet and exhaust valve (7) of these two valves (12).
2. double combustion chamber according to claim 1 reciprocating engine structure is characterized in that: the air inlet and exhaust valve (7) of each cylinder (3) comprises suction valve two (73), the outlet valve two (74) of the suction valve one (71) of combustion chamber one (31), outlet valve one (72) and combustion chamber two (32).
3. double combustion chamber according to claim 2 reciprocating engine structure, it is characterized in that: on the connecting rod (2) between bent axle (1) and first cylinder (3), be provided with a cylinder (5), be provided with a positioning piston (51) that is used for the moving direction of control link (2) in the cylinder (5).
4. according to the described double combustion chamber of claim 3 reciprocating engine structure, it is characterized in that: described cylinder (5) is the open type structure.
5. double combustion chamber according to claim 2 reciprocating engine structure, it is characterized in that: on the connecting rod (2) between bent axle (1) and first cylinder (3), be provided with an additional cylinder (6), be provided with an additional combustion chamber (61) and additional piston (62) in the additional cylinder (6), additional piston (62) can be reciprocating in additional combustion chamber (61); Additional combustion chamber (61) also is provided with suction valve one (71) and outlet valve one (72).
6. according to claim 3 or 5 described double combustion chamber reciprocating engine structures, it is characterized in that: it also is provided with two outer shafts (8) parallel with described connecting rod (2) in cylinder (3) external symmetry, and outer shaft (8) is near cylinder (3) and be provided with the air valve start-stop device of the opening and closing of the described air inlet and exhaust valve of may command (7) on the valve (12) of each cylinder (3) next door; Described outer shaft (8) and described bent axle (1) are orthogonal, and the two is provided with change gear device (13) and realizes synergic rotation, and outer shaft (8) when rotating a week bent axle (10) rotated for two weeks.
7. double combustion chamber according to claim 6 reciprocating engine structure, it is characterized in that: described air valve start-stop device is included in that the valve edge of each cylinder (3) is provided with is positioned at described outer shaft (8) and goes up the cam that is used to control each valve air inlet and exhaust valve (91) on disk (9) and this disk (9), the external frame of this cam (91) is a circular arc camber, and this cam (91) occupies the position of quadrant on disk (9).
8. double combustion chamber according to claim 6 reciprocating engine structure is characterized in that: an end top of going up away from bent axle (1) at described connecting rod (2) is provided with cooling nozzle (10), is provided with the water-cooling tube (11) of U type in described connecting rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320105293 CN203098048U (en) | 2013-03-08 | 2013-03-08 | Double-combustor reciprocating engine structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320105293 CN203098048U (en) | 2013-03-08 | 2013-03-08 | Double-combustor reciprocating engine structure |
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| Publication Number | Publication Date |
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| CN203098048U true CN203098048U (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320105293 Expired - Fee Related CN203098048U (en) | 2013-03-08 | 2013-03-08 | Double-combustor reciprocating engine structure |
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| CN (1) | CN203098048U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091152A (en) * | 2017-05-12 | 2017-08-25 | 北京航空航天大学 | A kind of twin cylinder bimodal aviation piston engine |
-
2013
- 2013-03-08 CN CN 201320105293 patent/CN203098048U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091152A (en) * | 2017-05-12 | 2017-08-25 | 北京航空航天大学 | A kind of twin cylinder bimodal aviation piston engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20160308 |