CN102418601B - High-speed free piston linear generator - Google Patents
High-speed free piston linear generator Download PDFInfo
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- CN102418601B CN102418601B CN 201110427677 CN201110427677A CN102418601B CN 102418601 B CN102418601 B CN 102418601B CN 201110427677 CN201110427677 CN 201110427677 CN 201110427677 A CN201110427677 A CN 201110427677A CN 102418601 B CN102418601 B CN 102418601B
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 35
- 230000033001 locomotion Effects 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000004880 explosion Methods 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 239000000567 combustion gas Substances 0.000 claims description 3
- 239000002360 explosive Substances 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract 6
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
本发明涉及一种高速自由活塞直线发电机，属于能源动力领域。它主要包括自由活塞内燃机、齿轮传动机构和直线发电机。两齿轮同轴相连组成齿轮传动机构；内燃机的两个自由活塞通过齿条式连杆固连形成一个活塞组件，活塞组件上的齿条通过匹配的齿轮传动机构与直线发电机的动子连接。内燃机的两个气缸分别轮流内部燃烧，推动活塞进行直线运动；由于活塞通过具有提速功能的齿轮传动机构与电机动子连接，因此内燃机每个气缸燃烧所产生的燃气爆发压力经过连杆和传动机构后最终提高电机动子的直线运动速度，本发明的一种高速自由活塞直线发电机，采用了齿轮传动机构，从而提高了电机动子的切割速度、增加了工作效率，电机动子的速度较活塞运动速度提高n倍。
The invention relates to a high-speed free-piston linear generator, which belongs to the field of energy and power. It mainly includes a free piston internal combustion engine, a gear transmission mechanism and a linear generator. The two gears are connected coaxially to form a gear transmission mechanism; the two free pistons of the internal combustion engine are fixedly connected by a rack-type connecting rod to form a piston assembly, and the rack on the piston assembly is connected to the mover of the linear generator through a matching gear transmission mechanism. The two cylinders of the internal combustion engine take turns to burn internally, pushing the piston to move in a straight line; because the piston is connected to the electric mover through the gear transmission mechanism with speed-up function, the gas explosion pressure generated by the combustion of each cylinder of the internal combustion engine passes through the connecting rod and the transmission mechanism. Finally, the linear motion speed of the motor mover is improved. A high-speed free-piston linear generator of the present invention adopts a gear transmission mechanism, thereby improving the cutting speed of the motor mover and increasing work efficiency. The speed of the motor mover is relatively high. The speed of piston movement is increased by n times.
Description
Technical field
The present invention relates to a kind of Energy Project mechanical device, be specifically related to a kind of high-speed free piston linear generator, belong to the energy source and power field.
Background technique
Existing internal combustion engine generator general structure is that reciprocating internal combustion engine is connected with electric rotating machine by connecting rod, comprise two-stroke and four-stroke two class thermodynamic cycle modes, its shortcoming is that complex structure, volume are large, the thermal efficiency is low, and tail gas discharging pollutant is more.Particularly because the straight line motion of piston can't directly be realized rotating power output, so change by connecting rod, traditional bent axle mainly is comprised of crank, crank throw and crank pin, its main feature is the ladder shaft part, in working procedure, the piston group can not obtain balance completely because of reciprocal inertia force and the moment of inertia that to-and-fro motion causes, the vibration and noise problem that causes thus becomes increasingly conspicuous, and has had a strong impact on the development of internal combustion engine generator.
In recent years, it is high that people are being devoted to seek a kind of energy conversion efficiency always, and vibration noise small piston formula internal combustion engine generator to solving variety of issue above-mentioned, has been done a large amount of research work for this reason.wherein, the free piston IC linear generating set is a kind of novel energy conversion equipment that free piston IC engine and linear electric generator coupling form afterwards, invented at present, and some research institutions have launched research to it, can be referring to Li Qingfeng, Xiao advances, Huang Zhen. free piston IC generator simulation study [J]. China Mechanical Engineering, 2009, 20 (8): 911-916, but the internal-combustion linear electricity generating device of research is mainly by free-piston engine and the direct-coupled mode of linear electric generator at present, due to the restriction that is subject to internal-combustion engine technology, the movement velocity of internal combustion engine is lower at present, caused linear electric generator mover speed also lower, usually mean velocity is no more than 15m/s, energy conversion efficiency is also not too high, therefore can not satisfy the requirement of high-speed straight-line generator, virtually reduced the using scope of internal combustion engine generator.In addition, because space rate is lower, under the prerequisite of equal-wattage, linear electric generator needs larger volume could satisfy the requirement of power, therefore due to the restriction of speed, has reduced the specific volume power of internal combustion engine generator.
Summary of the invention
The objective of the invention is in order to solve the lower problem of generator mover speed in prior art, thereby proposed a kind of high-speed free piston linear generator.
The objective of the invention is to be achieved through the following technical solutions.
A kind of high speed free-piston internal-combustion linear generator of the present invention, it mainly comprises free piston internal combustion engine, gear drive, linear electric generator and tooth bar connecting rod; Free piston internal combustion engine comprises: cylinder, piston, intake valve, exhaust valve, oil sprayer, air-exhausting air-entering controller; Gear drive comprises: the first gear, axle, the second gear, and the first gear is connected with the second gear is coaxial; Linear electric generator comprises: electric mover, motor stator.
Its annexation is: two free-pistons of free piston internal combustion engine are connected by the tooth bar connecting rod and form a piston assembly, and the tooth bar on piston assembly is connected with the mover of linear electric generator by the gear drive of coupling.
Its working procedure is:
1) cold machine start-up course.linear electric motor are operated under electric motor mode at this moment, external force by means of motor, electric mover driven gear driving mechanism rotates, because gear drive is connected with the engagement of tooth bar connecting rod, piston in cylinder also can be done straight line motion with connecting rod, be in compression stroke in one of them cylinder of internal-combustion engine this moment, air in compression cylinder is to top dead center, when piston movement during to top dead center, the oil sprayer that is arranged on cylinder head ejects high pressure fuel, and compressed burning, produce high-pressure gas, pushing piston moves to lower dead center, begin external work done, cold machine start-up course is completed,
2) running.Two cylinder interior difference of free piston internal combustion engine are explosive combustion in turn, and the pushing piston assembly carries out straight line motion.Piston is when top dead center, the combustion gas pressure of explosion pushing piston that the high pressure fuel burning produces moves to lower dead center, does work, and promotes gear drive by the tooth bar connecting rod, make the electric mover cutting magnetic induction line that is connected with a joggle with gear drive, produce electric energy output.The speed of electric mover improves n doubly (diameter of the diameter of n=the second gear/first gear) than piston movement speed.
Beneficial effect
1, a kind of high-speed free piston linear generator of the present invention, adopted gear drive, thereby improved electric mover cutting speed, increased working efficiency, the speed of electric mover improves n doubly (diameter of the diameter of n=the second gear/first gear) than piston movement speed.
2, as the driving mechanism of critical component, mainly being comprised of gear and tooth bar, is mature technology, and 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 embodiment 1 sectional view;
In figure, 1-cylinder, 2-piston, 3-intake valve, 4-exhaust valve, 5-oil sprayer, 6-air-exhausting air-entering controller, 7-tooth bar connecting rod, 8-the first gear, 9-axle, 10-the second gear, 11-electric mover, 12-motor stator.
Embodiment
The present invention will be further described below in conjunction with drawings and Examples.
Embodiment 1
A kind of high speed free-piston internal-combustion linear generator of the present invention, it mainly comprises free piston internal combustion engine, gear drive, linear electric generator and tooth bar connecting rod 7; 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; Gear drive comprises: the first gear 8, axle 9, the second gear 10, the first gears 8 are connected by axle 9 is coaxial with the second gear 10; Linear electric generator comprises: electric mover 11, motor stator 12, as shown in Figure 1;
Its annexation is: two free-pistons of free piston internal combustion engine form a piston assembly by being connected, the tooth bar connecting rod 7 on piston assembly is connected with the mover of linear electric generator by the gear drive of coupling.The diameter ratio of the diameter of gear 12 and gear 10 is 2.
Its working procedure is:
1) cold machine start-up course.Linear electric motor are operated under electric motor mode at this moment.External force by means of motor, electric mover 11 driven gear driving mechanisms rotate, because gear drive is connected with 7 engagements of rack-type connecting rod, piston in cylinder also can be done straight line motion with connecting rod 7, be in compression stroke in one of them cylinder of internal-combustion engine this moment, air in compression cylinder is to top dead center, when piston movement during to top dead center, the oil sprayer that is arranged on cylinder head ejects high pressure fuel, and compressed burning, producing high-pressure gas, pushing piston moves to lower dead center, begin external work done, cold machine start-up course is completed;
2) running.Two cylinder interior difference of free piston internal combustion engine are explosive combustion in turn, and the pushing piston assembly carries out straight line motion.Piston is when top dead center, the combustion gas pressure of explosion pushing piston that the high pressure fuel burning produces moves to lower dead center, does work, and promotes gear drive by tooth bar connecting rod 7, make electric mover 11 cutting magnetic induction lines that are connected with a joggle with gear drive, produce electric energy output.The speed of electric mover improves 2 times than piston movement speed.
Claims (1)
1. high speed free-piston internal-combustion linear generator, it mainly comprises free piston internal combustion engine and linear electric generator, it is characterized in that: it also comprises gear drive and tooth bar connecting rod (7); 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); Gear drive comprises: the first gear (8), axle (9), the second gear (10), the first gear (8) with the second gear (10) by coaxial connection of axle (9); Linear electric generator comprises: electric mover (11), motor stator (12); Its annexation is: two free-pistons of free piston internal combustion engine are connected by tooth bar connecting rod (7) and form a piston assembly, and the tooth bar connecting rod (7) on piston assembly is connected with the mover of linear electric generator by the gear drive of coupling; The diameter ratio of the diameter of the second gear (10) and the first gear (8) is 2:1;
Its working procedure is:
1) cold machine start-up course: linear electric motor are operated under electric motor mode at this moment; external force by means of motor, electric mover (11) driven gear driving mechanism rotates, because gear drive is connected with tooth bar connecting rod (7) engagement, piston in cylinder also can be done straight line motion with tooth bar connecting rod (7), be in compression stroke in one of them cylinder of internal-combustion engine this moment, air in compression cylinder is to top dead center, when piston movement during to top dead center, the oil sprayer that is arranged on cylinder head ejects high pressure fuel, and compressed burning, produce high-pressure gas, pushing piston moves to lower dead center, begin external work done, cold machine start-up course is completed,
2) running: two cylinder interior difference of free piston internal combustion engine are explosive combustion in turn, and the pushing piston assembly carries out straight line motion; Piston is when top dead center, the combustion gas pressure of explosion pushing piston that the high pressure fuel burning produces moves to lower dead center, do work, promote gear drive by tooth bar connecting rod (7), make electric mover (11) cutting magnetic induction line that is connected with a joggle with gear drive, produce electric energy output; The speed of electric mover improves 2 times than piston movement speed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110427677 CN102418601B (en) | 2011-12-19 | 2011-12-19 | High-speed free piston linear generator |
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| CN 201110427677 CN102418601B (en) | 2011-12-19 | 2011-12-19 | High-speed free piston linear generator |
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| CN102418601A CN102418601A (en) | 2012-04-18 |
| CN102418601B true CN102418601B (en) | 2013-06-05 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103234759B (en) * | 2013-04-11 | 2016-06-01 | 北京理工大学 | Combustion power generation power system oil engine module-specific testing table in a kind of free piston |
| CN109268137A (en) * | 2018-10-29 | 2019-01-25 | 龚勇辉 | Engine |
| CN109854456B (en) * | 2019-03-04 | 2020-06-02 | 金陵科技学院 | Mechanical type offshore wind turbine energy conversion device |
| CN110798107A (en) * | 2019-09-30 | 2020-02-14 | 山东休普动力科技股份有限公司 | Free piston linear generator control system and control method based on DMC algorithm |
| CN111963309A (en) * | 2020-01-14 | 2020-11-20 | 熵零技术逻辑工程院集团股份有限公司 | Engine |
| CN111365190A (en) * | 2020-04-30 | 2020-07-03 | 陈海陵 | Static pressure acting device and working method thereof |
| CN216306087U (en) * | 2020-10-11 | 2022-04-15 | 熵零技术逻辑工程院集团股份有限公司 | Engine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2660970A1 (en) * | 1990-04-12 | 1991-10-18 | Minoru Rech Avancee I | Engine system with a free piston |
| CN1888402A (en) * | 2006-07-20 | 2007-01-03 | 上海交通大学 | Free-piston type internal combustion engine power generating system |
| CN100381684C (en) * | 2002-09-03 | 2008-04-16 | Fev电机技术有限公司 | Method of regulating the operation of a device for generating electrical energy by means of a generator driven by a free-piston internal combustion engine |
| CN201129211Y (en) * | 2007-12-25 | 2008-10-08 | 孙军 | Quasi free-piston straight-line electric generating set |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4779881B2 (en) * | 2006-08-28 | 2011-09-28 | マツダ株式会社 | Free piston engine |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2660970A1 (en) * | 1990-04-12 | 1991-10-18 | Minoru Rech Avancee I | Engine system with a free piston |
| CN100381684C (en) * | 2002-09-03 | 2008-04-16 | Fev电机技术有限公司 | Method of regulating the operation of a device for generating electrical energy by means of a generator driven by a free-piston internal combustion engine |
| CN1888402A (en) * | 2006-07-20 | 2007-01-03 | 上海交通大学 | Free-piston type internal combustion engine power generating system |
| CN201129211Y (en) * | 2007-12-25 | 2008-10-08 | 孙军 | Quasi free-piston straight-line electric generating set |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2008-51059A 2008.03.06 |
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