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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Abstract
The invention relates to a high-speed free piston linear generator and belongs to the field of energy power. The high-speed free piston linear generator mainly comprises a free piston internal combustion engine, a gear transmission mechanism and a linear generator, wherein the gear transmission mechanism is formed by coaxially connecting two gears; two free pistons of the internal combustion engine are fixedly connected with each other through a rack-type connecting rod to form a piston component; and a rack on the piston component is connected with an active cell of the linear generator through the matched gear transmission mechanism. Inner parts of two cylinders of the internal combustion engine are combusted respectively to push the pistons to do linear motion; the pistons are connected with a motor active cell through the gear transmission mechanism with a function of increasing the speed, so that the linear motion speed of the motor active cell is finally increased by using gas explosion pressure produced by combustion of each cylinder of the internal combustion engine through the connecting rod and the transmission mechanism. In the high-speed free piston linear generator, the gear transmission mechanism is adopted, so that the cutting speed of the motor active cell is increased and the working efficiency is improved; and the speed of the motor active cell is n times higher than the motion speed of the piston.
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 (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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 for regulating the operation of a device for generating electric 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 |
Family Cites Families (1)
| 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 for regulating the operation of a device for generating electric 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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