CN202348448U - Dead center-controllable free piston internal combustion linear generator - Google Patents
Dead center-controllable free piston internal combustion linear generator Download PDFInfo
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- CN202348448U CN202348448U CN2011205340726U CN201120534072U CN202348448U CN 202348448 U CN202348448 U CN 202348448U CN 2011205340726 U CN2011205340726 U CN 2011205340726U CN 201120534072 U CN201120534072 U CN 201120534072U CN 202348448 U CN202348448 U CN 202348448U
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- free piston
- internal combustion
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- dead center
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Abstract
The utility model relates to a dead center-controllable free piston internal combustion linear generator and belongs to the field of energy power. The dead center-controllable free piston internal combustion linear generator mainly comprises a free piston internal combustion engine, linear generators, a disc control mechanism and a connecting rod, wherein the connecting relationship of the components is that the free piston internal combustion engine and the linear generators are sequentially connected to form free piston internal combustion linear generators; two free piston linear generators are symmetrically arranged on a straight line passing through the circle center of a disc; and the disc is connected with a motor through a shaft. A motion through line is preformed in the disc and is matched with a curve of a motion cycle of a piston in shape. The internal through line of the disc is in contact connection with the free piston internal generator connecting rod to play roles of returning the free piston and controlling an upper dead center. According to the dead center-controllable free piston internal combustion linear generator disclosed by the utility model, the disc control device is applied, and thus the aim of controlling the dead center of the piston is achieved. When the disc works, high balance and favorable stability are obtained; and multi-cylinder synchronous operation can be realized.
Description
Technical field
The utility model relates to a kind of Energy Project mechanical device, is specifically related to the controlled free-piston internal-combustion linear generator of a kind of stop, belongs to the energy source and power field.
Background technique
The free piston IC linear electric generator is a kind of novel energy conversion equipment that free piston engine and linear electric generator coupling form afterwards.The internal-combustion linear electricity generating device motive force of research---the internal-combustion engine part generally adopts two-stroke formula internal-combustion engine at present; Its piston motion does not receive the restriction of connecting rod; Unfixing last lower dead center; Alterable compression ratio, thus applicable to the combustion requirements of pluralities of fuel, can realize the low emission of NOx and particulate matter.But; Also there is not at present ripe relatively method can realize accurate control to free piston linear generator top dead center; Yet top dead center position is directly determining the compression ratio of motor, and compression ratio is again a very crucial parameter of motor, and it is having a strong impact on the multiple performance parameter of motor; For example, maximum combustion pressure, effective output etc.Therefore the positioning control of top dead center is directly affected the service behaviour of whole free piston linear generator.
In recent years, people are being devoted to seek the controlled free piston IC generator of a kind of top dead center always, in the hope of solving variety of issue above-mentioned, have done number of research projects for this reason.The Zuo Zhengxing of Beijing Institute of Technology is at its relevant paper intermediary a kind of single cylinder free piston linear generator of taking linear motor as the piston response agency that continued; Method through the motion bit in-migration control free-piston top dead center of control linear motor is proposed; But its crucial linear electric motor controller is difficult to solve; And the conversion between its motor mode of operation and the generator mode of operation needs the certain reaction time; Be difficult to satisfy the requirement of existing free piston linear generator frequency of okperation, be difficult to realize product practicability.In addition, also have some similar methods, for example take load to follow the method for control, its core concept is still taked electronic control, realizes the control to top dead center through open controller.But present stage meets the demands to still being difficult in the exploitation of free piston linear engine controller.
The model utility content
The purpose of the utility model is in order to solve the problem of poor stability in the existing technology, thereby has proposed the controlled free-piston internal-combustion linear generator of a kind of stop.
The purpose of the utility model realizes through following technical proposals.
The utility model provides the controlled free piston internal combustion engine of a kind of stop.It mainly comprises free piston internal combustion engine, linear electric generator, disk control mechanism and connecting rod; Free piston internal combustion engine comprises: cylinder, piston, intake valve, exhaust valve, oil sprayer, air-exhausting air-entering controller; The disk control mechanism comprises disk, the line of rabbet joint, axle, motor; Linear electric generator comprises: electric mover, motor stator;
Its annexation is: free piston internal combustion engine links to each other with linear electric generator in order, forms the free piston linear generator; Two free piston linear generator symmetries were positioned on the straight line of circle disk center, and disk is connected with motor through axle.Digging in advance on the disk has the motion line of rabbet joint, and the line of rabbet joint and the curve shape of a cycle of motion of piston match.The inside line of rabbet joint of disk contacts with the free-piston engine connecting rod and links to each other, and plays free-piston and replys and the top dead center control action.
Its working procedure is:
1) cold machine start-up course.Motor drives disk uniform rotation in the disk control gear; Piston under the effect of the disk line of rabbet joint in each cylinder also can be done straight line motion with connecting rod, this moment internal-combustion engine wherein the piston in the cylinder be in compression stroke, when piston motion to top dead center; The inner line of rabbet joint point of contact of connecting rod and disk is positioned at line of rabbet joint maximum lift place; The oil sprayer that this moment is installed in the cylinder top ejects high pressure fuel, and oil inflame produces high-pressure gas, promotes piston and moves to lower dead center; Begin external work done, cold machine start-up course is accomplished.Because the inner line of rabbet joint of disk and the curve of a cycle of motion of free-piston match, therefore rear disk takes place to this engine combustion and the not influence of acting process in burning.
2) running.Two cylinder interior of free piston internal combustion engine are explosive combustion in turn respectively, promotes piston assembly and carries out straight line motion.When the piston in one of them cylinder was in top dead center, the combustion gas pressure of explosion that the high pressure fuel burning in this cylinder produces promoted piston and moves to lower dead center, does work.Because electric mover is connected on the connecting rod, electric mover will cut magnetic wire when piston moves to lower dead center, produce electric energy output.In this process; According to uniform rotation, the piston in another engine cylinder can be moved to top dead center by lower dead center under the restoring force effect of the disk line of rabbet joint disk, when moving to top dead center under the effect of motor; The oil sprayer that is installed in this cylinder head ejects high pressure fuel; Oil inflame produces high-pressure gas, and the piston that promotes in the cylinder moves to lower dead center, begins external work done.After this motor expansion space stroke finished, disk just rotated a week, accomplishes a work cycle; Work on according to this work cycle in this device running.
Beneficial effect
1, the controlled free piston linear generator of a kind of stop of the utility model has been used the disk control gear, thereby has reached the purpose of control piston stop.High, the good stability of balance can be realized multi-cylinder synchronous operation during disk work.
2, as the disk and the motor of critical component, be mature technology, reliability is high, makes easy to processly, and cost is low, and is convenient to realize standardization and commercialization.
Description of drawings
Fig. 1 is the sectional view of the controlled free-piston internal-combustion linear generator of a kind of stop of the utility model;
Fig. 2 is a disk sectional view among the embodiment;
Fig. 3 is a disk line of rabbet joint sports type line among the embodiment.
Wherein, 1-cylinder, 2-piston, 3-intake valve, 4-exhaust valve, 5-oil sprayer, 6-air-exhausting air-entering controller, 7-electric mover, 8-motor stator, 9-connecting rod, 10-disk, 11-axle, 12-motor, 13-disk control mechanism, the 14-line of rabbet joint.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Embodiment 1
The free-piston internal-combustion linear generator that a kind of stop of the utility model is controlled.Mainly comprise: free piston internal combustion engine, linear electric generator, disk control mechanism 13 and connecting rod 9; Free piston internal combustion engine comprises: cylinder 1, piston 2, intake valve 3, exhaust valve 4, oil sprayer 5, air-exhausting air-entering controller 6; Linear electric generator comprises: electric mover 7, motor stator 8; Disk control mechanism 13 comprises disk 10, axle 11, motor 12, the line of rabbet joint 14, and is as shown in Figure 1.
Digging in advance on the disk 10 has the motion line of rabbet joint 14, and as shown in Figure 2, the line of rabbet joint 14 matches with the curve shape of a cycle of motion of piston, and is as shown in Figure 3.
Its annexation is: free piston internal combustion engine links to each other with linear electric generator in order, forms the free piston linear generator; Free piston linear generator symmetry was positioned on the straight line in disk 10 centers of circle, and disk 10 is connected with motor 12 through axle 11.Digging in advance on the disk 10 has the motion line of rabbet joint 14, and the line of rabbet joint 14 matches with the curve shape of a cycle of motion of piston.The inside line of rabbet joint 14 of disk 10 contacts with the free-piston engine connecting rod and links to each other, and replys and the top dead center control action thereby play free-piston.
1) cold machine start-up course.Motor 12 in the disk control mechanism 13 drives disk 10 uniform rotation; Piston under the effect of the line of rabbet joint 14 in each cylinder also can be done straight line motion with connecting rod, and this moment, cylinder of internal-combustion engine 1 interior piston 2 was in compression stroke, when piston 2 moves to top dead center; Connecting rod 9 is positioned at the line of rabbet joint 14 maximum lift places with the disk 10 inner line of rabbet joint 14 point of contact; The oil sprayer 5 that this moment is installed in the cylinder top ejects high pressure fuel, and oil inflame produces high-pressure gas, promotes piston 2 and moves to lower dead center; Begin external work done, cold machine start-up course is accomplished.Because the inner line of rabbet joint 14 of disk matches with the curve of 2 one cycle of motion of free-piston, therefore in burning 10 pairs of these engine combustions of rear disk and the not influence of acting process take place.
2) running.Two cylinder interior of free piston internal combustion engine are explosive combustion in turn respectively, promotes piston assembly and carries out straight line motion.When the piston in the cylinder 1 wherein was in top dead center, the combustion gas pressure of explosion that the high pressure fuel burning in this cylinder produces promoted piston 2 to the lower dead center motion, does work.Because electric mover 7 is connected on the connecting rod 9, electric mover 7 will cut magnetic wire when piston 2 moves to lower dead center, produce electric energy output.In this process; According to uniform rotation, the piston in another engine cylinder can be moved to top dead center by lower dead center under the restoring force effect of the line of rabbet joint 14 disk 10, when moving to top dead center under the effect of motor 12; The oil sprayer that is installed in this cylinder head ejects high pressure fuel; Oil inflame produces high-pressure gas, and the piston that promotes in the cylinder moves to lower dead center, begins external work done.After this motor expansion space stroke finished, disk 10 just rotated a week, accomplishes a work cycle; Work on according to this work cycle in this device running.
Claims (1)
1. free-piston internal-combustion linear generator that stop is controlled, mainly comprise: free piston internal combustion engine, linear electric generator is characterized in that it also comprises disk control mechanism (13) and connecting rod (9); Free piston internal combustion engine comprises: cylinder (1), piston (2), intake valve (3), exhaust valve (4), oil sprayer (5), air-exhausting air-entering controller (6); Linear electric generator comprises: electric mover (7), motor stator (8); Disk control mechanism (13) comprises disk (10), the line of rabbet joint (14), axle (11), motor (12); Its annexation is: free piston internal combustion engine links to each other with linear electric generator in order, forms the free piston linear generator; Free piston linear generator symmetry was positioned on the straight line in disk (10) center of circle, disk (10) is connected with motor (12) through axle (11); Digging in advance on the disk (10) has the motion line of rabbet joint (14), and the line of rabbet joint (14) matches with the curve shape of a cycle of motion of piston; The inside line of rabbet joint (14) of disk (10) contacts with the free-piston engine connecting rod and links to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205340726U CN202348448U (en) | 2011-12-19 | 2011-12-19 | Dead center-controllable free piston internal combustion linear generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205340726U CN202348448U (en) | 2011-12-19 | 2011-12-19 | Dead center-controllable free piston internal combustion linear generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202348448U true CN202348448U (en) | 2012-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205340726U Withdrawn - After Issue CN202348448U (en) | 2011-12-19 | 2011-12-19 | Dead center-controllable free piston internal combustion linear generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202348448U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425499A (en) * | 2011-12-19 | 2012-04-25 | 北京理工大学 | Dead point controlled free piston internal combustion linear generator |
-
2011
- 2011-12-19 CN CN2011205340726U patent/CN202348448U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425499A (en) * | 2011-12-19 | 2012-04-25 | 北京理工大学 | Dead point controlled free piston internal combustion linear generator |
| CN102425499B (en) * | 2011-12-19 | 2013-09-25 | 北京理工大学 | Dead point controlled free piston internal combustion linear generator |
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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: 20120725 Effective date of abandoning: 20130925 |
|
| RGAV | Abandon patent right to avoid regrant |