CN103573375A - Free-piston internal-combustion generator oscillation driving piston cooling system - Google Patents
Free-piston internal-combustion generator oscillation driving piston cooling system Download PDFInfo
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- CN103573375A CN103573375A CN201310516286.4A CN201310516286A CN103573375A CN 103573375 A CN103573375 A CN 103573375A CN 201310516286 A CN201310516286 A CN 201310516286A CN 103573375 A CN103573375 A CN 103573375A
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Abstract
The invention relates to a free-piston internal-combustion generator oscillation driving piston cooling system, and belongs to the field of energy source power. The piston cooling system mainly comprises pistons, a connecting rod, one-way valves and radiators, wherein the pistons on the two sides are rigidly connected with the connecting rod to form a piston assembly; an oil duct is formed in the piston assembly; an oil chamber is arranged in any position of the oil duct; the one-way valves move left and right in the oil chamber; the radiators are fixed between air cylinders and generators; through holes are formed in the middles of the radiators, and used for passing of the connecting rod; radiating fins are arranged on the surfaces of the radiators; the interiors of the radiators are hollow, and are used for storing cooling oil; and an oil inlet and an oil outlet are formed at contact parts of the cooling oil in the connecting rod and the radiators. The system performs oil pumping by virtue of inertia of the one-way valves, and requires no additional driving device; circulation of the cooling oil is achieved by the oil duct in the piston assembly; and heat loads of a whole piston connecting rod group and a linear generator are reduced.
Description
Technical field
The present invention relates to a kind of free-piston internal combustion engine generator vibration drive-type piston looling system, belong to 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.Free-piston internal combustion engine generator is a kind of novel power device of rising in recent years, by free piston IC engine and linear electric generator direct-coupling, formed, it is directly connected free-piston and linear motor rotor, forms unique moving element---piston assembly.During system operation, the work done of gas in the jar burning expansion, promotes piston and drives the motion of generator mover, then produces electric energy, finally by shorter bang path, fuel chemical energy is directly converted to electric energy.It has numerous Potential performance advantages, as few in mechanical friction loss, and compact structure volume is little, and energy bang path is short, and burning and exhausting quality is good etc.
Piston is the core component of free-piston internal combustion engine generator, be in operation and bear quite high mechanical load and heat load, it is directly connected with linear motor rotor by connecting rod, its heat load is directly delivered on linear motor rotor, affected the performance of linear electric motor, made the whole power system cannot stable operation.Therefore, cooling very necessary to free-piston internal combustion engine generator piston.If the piston of free-piston generator is carried out by the type of cooling of transmission internal combustion engine piston coolingly, owing to there is no bent axle and oil sump, cooling oil cannot complete circulation by the mode of splashing.In addition, as oil pumping device and the external pipeline of additional drive, so not only part is many, and cost is high, and has reduced system works reliability.
Summary of the invention
The object of the invention is in order to solve the problem of existing free-piston internal combustion engine generator piston cooling difficulty, a kind of free-piston internal combustion engine generator vibration drive-type piston looling system is provided.
The object of the invention is to be achieved through the following technical solutions.
A kind of free-piston internal combustion engine generator vibration drive-type piston looling system of the present invention, mainly comprises: piston, connecting rod, one-way valve, radiator.
Described piston is the inner piston that is provided with oil pocket and oil duct;
Described connecting rod is that vittate connecting rod is established in inside
Annexation is: the piston of both sides is rigidly connected with connecting rod respectively, forms a piston assembly.In piston assembly inside, offer oil duct; On oil duct, arbitrary position is provided with oil pocket; One-way valve moves left and right in oil pocket; Radiator is fixed between cylinder and generator; Radiator middle part has through hole, for passing through of connecting rod; Spreader surface has radiating fin; Radiator inner hollow, for storing cold oil; In the shaft portion contacting with cold oil in radiator, have filler opening and oil outlet; Connecting rod, with respect to radiator to-and-fro motion, needs to guarantee that filler opening contacts with radiator internal cooling oil with oil outlet always; Because engine design stroke is known, need to guarantee that the length of radiator is greater than the design runlength of motor;
The quality of described one-way valve is larger, and the flow velocity of cold oil is higher, and the operating temperature range that can require according to piston is chosen suitable one-way valve mass parameter.
Working procedure:
The alternately outburst of free-piston internal combustion engine generator left and right two cylinders, pressure of explosion promotes whole piston assembly to-and-fro motion, effect due to inertial force, one-way valve in internal piston oil pocket vibrates in oil pocket, thereby the cold oil in oil pocket can only flow and play the effect of pump oil to a direction, and by oil input channel, low temperature refrigeration oil is pumped from radiator.Low temperature refrigeration oil flows in the oil duct of internal piston, carry out heat exchange with piston after temperature raise, by back oil road, flow back to radiator.There is radiating fin on the surface of radiator, and the heat of its internal cooling oil is delivered in the middle of atmosphere by radiating fin, completes circulation.One-way valve quality is larger, and the flow velocity of cold oil is higher, and the operating temperature range that can require according to piston is chosen suitable one-way valve mass parameter.
Beneficial effect
1, a kind of free-piston internal combustion engine generator vibration drive-type piston looling system of the present invention, carries out pump oil by the inertia of one-way valve self, does not need extra drive unit.By the oil duct of piston assembly inside, realize the circulation of cold oil, reduced the heat load of whole piston rod group and linear electric generator.
2, a kind of free-piston internal combustion engine generator vibration drive-type piston looling system of the present invention, whole system component are few, compact structure, manufacture easy to process, technology maturation.Pipeline and joint without other, have higher reliability.
Accompanying drawing explanation
Fig. 1 is a kind of sectional view of free-piston internal combustion engine generator vibration drive-type piston looling system;
Wherein, 1-cylinder, 2-piston, 3-connecting rod, 4-oil pocket, 5-one-way valve, 6-oil input channel, 7-back oil road, 8-radiator, 9-electricity generator stator coil, 10-generator mover.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention will be further described.
An internal combustion engine generator vibration drive-type piston looling system, mainly comprises: piston 2, connecting rod 3, one-way valve 5, radiator 8.
Described piston 2 is the inner piston 2 that is provided with oil pocket 4 and oil duct;
Described connecting rod 3 is for establishing vittate connecting rod 3 in inside
Annexation is: the piston 2 of both sides is rigidly connected with connecting rod 3 respectively, forms piston 2 assemblies.In piston 2 component internal, offer oil duct; On oil duct, arbitrary position is provided with oil pocket 4; One-way valve 5 moves left and right in oil pocket 4; Radiator 8 is fixed between cylinder 1 and generator; Radiator 8 middle parts have through hole, for passing through of connecting rod 3; There is radiating fin on radiator 8 surfaces; Radiator 8 inner hollow, for storing cold oil; In connecting rod 3 and the interior cold oil contact segment of radiator 8, have filler opening and oil outlet; Connecting rod 3 is moving reciprocatingly with respect to radiator 8, needs to guarantee that filler opening contacts with radiator 8 internal cooling oil with oil outlet always; Because engine design stroke is known, need to guarantee that the width of radiator 8 is greater than the design runlength of motor;
The quality of described one-way valve 5 is larger, and the flow velocity of cold oil is higher, and the operating temperature range that can require according to piston 2 is chosen suitable one-way valve 5 mass parameters.
Working procedure:
Free-piston 2 internal combustion engine generator left and right two alternately outbursts of cylinder 1, pressure of explosion promotes whole piston 2 assembly to-and-fro motion, effect due to inertial force, one-way valve 5 in the inner oil pocket 4 of piston 2 is in the interior vibration of oil pocket 4, thereby the cold oil in oil pocket 4 can only flow and play the effect of pump oil to a direction, and by oil input channel 6, low temperature refrigeration oil is pumped from radiator 8.Low temperature refrigeration oil flows in the oil duct of piston 2 inside, carry out heat exchange with piston 2 after temperature raise, by back oil road 7, flow back to radiator 8.There is radiating fin on the surface of radiator 8, and the heat of its internal cooling oil is delivered in the middle of atmosphere by radiating fin, completes circulation.One-way valve 5 quality are larger, and the flow velocity of cold oil is higher, and the operating temperature range that can require according to piston 2 is chosen suitable one-way valve 5 mass parameters.
Claims (3)
1. a free-piston internal combustion engine generator vibration drive-type piston looling system, is characterized in that: mainly comprise: piston (2), connecting rod (3), one-way valve (5), radiator (8); The piston of both sides (2) is rigidly connected with connecting rod (3) respectively, forms a piston assembly; In piston assembly inside, offer oil duct; On oil duct, arbitrary position is provided with oil pocket (4); One-way valve (5) moves left and right in oil pocket (4); Radiator (8) is fixed between cylinder (1) and generator; Radiator (8) middle part has through hole, for passing through of connecting rod (3); There is radiating fin on radiator (8) surface; Radiator (8) inner hollow, for storing cold oil; In connecting rod (3) and radiator (8), cold oil contact segment has filler opening and oil outlet.
2. a kind of free-piston internal combustion engine generator vibration drive-type piston looling system as claimed in claim 1, it is characterized in that: described connecting rod (3) is moving reciprocatingly with respect to radiator (8), need to guarantee that filler opening contacts with radiator (8) internal cooling oil with oil outlet always; Because engine design stroke is known, need to guarantee that the width of radiator (8) is greater than the design runlength of motor.
3. a kind of free-piston internal combustion engine generator vibration drive-type piston looling system as claimed in claim 1 or 2, it is characterized in that: the quality of described one-way valve (5) is larger, the flow velocity of cold oil is higher, and the operating temperature range that can require according to piston (2) is chosen suitable one-way valve (5) mass parameter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310516286.4A CN103573375B (en) | 2013-10-28 | 2013-10-28 | A kind of free-piston internal combustion engine generator vibration drive-type piston looling system |
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| CN201310516286.4A CN103573375B (en) | 2013-10-28 | 2013-10-28 | A kind of free-piston internal combustion engine generator vibration drive-type piston looling system |
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| CN103573375A true CN103573375A (en) | 2014-02-12 |
| CN103573375B CN103573375B (en) | 2015-12-02 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105173553A (en) * | 2015-08-28 | 2015-12-23 | 重庆市腾瀚工贸有限公司 | Intermittent transportation device for steering knuckles |
| CN107887805A (en) * | 2017-12-21 | 2018-04-06 | 重庆麦纳昇科技有限公司 | Energy-saving power distribution cabinet cooling system |
| CN108036009A (en) * | 2017-12-12 | 2018-05-15 | 无锡市盛源汽车配件厂 | Possesses the piston rod of shock absorber for vehicles of heat sinking function |
| CN111025150A (en) * | 2019-12-23 | 2020-04-17 | 北京理工大学 | Wide-temperature-range linear generator performance testing method and device |
| CN113029579A (en) * | 2021-02-04 | 2021-06-25 | 昆明理工大学 | Magnetic drive suspension oscillation heat transfer simulation test device |
Citations (4)
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| DE4040611A1 (en) * | 1990-12-19 | 1992-07-02 | Man B & W Diesel Ag | Jet piston cooling for IC engines - has air accumulation chamber in piston base |
| CN1163343A (en) * | 1996-04-19 | 1997-10-29 | 金良安 | Self-pressurizing self-lburicating and self cooling internal combustion engine with fully work-producing stroke |
| CN102705101A (en) * | 2012-05-16 | 2012-10-03 | 郑凌 | Cooling system for internal-combustion engine piston |
| CN102877940A (en) * | 2012-10-15 | 2013-01-16 | 北京理工大学 | Starting system of motor type free piston internal combustion power generation device |
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2013
- 2013-10-28 CN CN201310516286.4A patent/CN103573375B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4040611A1 (en) * | 1990-12-19 | 1992-07-02 | Man B & W Diesel Ag | Jet piston cooling for IC engines - has air accumulation chamber in piston base |
| CN1163343A (en) * | 1996-04-19 | 1997-10-29 | 金良安 | Self-pressurizing self-lburicating and self cooling internal combustion engine with fully work-producing stroke |
| CN102705101A (en) * | 2012-05-16 | 2012-10-03 | 郑凌 | Cooling system for internal-combustion engine piston |
| CN102877940A (en) * | 2012-10-15 | 2013-01-16 | 北京理工大学 | Starting system of motor type free piston internal combustion power generation device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105173553A (en) * | 2015-08-28 | 2015-12-23 | 重庆市腾瀚工贸有限公司 | Intermittent transportation device for steering knuckles |
| CN108036009A (en) * | 2017-12-12 | 2018-05-15 | 无锡市盛源汽车配件厂 | Possesses the piston rod of shock absorber for vehicles of heat sinking function |
| CN107887805A (en) * | 2017-12-21 | 2018-04-06 | 重庆麦纳昇科技有限公司 | Energy-saving power distribution cabinet cooling system |
| CN111025150A (en) * | 2019-12-23 | 2020-04-17 | 北京理工大学 | Wide-temperature-range linear generator performance testing method and device |
| CN113029579A (en) * | 2021-02-04 | 2021-06-25 | 昆明理工大学 | Magnetic drive suspension oscillation heat transfer simulation test device |
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| CN103573375B (en) | 2015-12-02 |
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