CN103261626A - Free piston engine generator - Google Patents
Free piston engine generator Download PDFInfo
- Publication number
- CN103261626A CN103261626A CN2011800606779A CN201180060677A CN103261626A CN 103261626 A CN103261626 A CN 103261626A CN 2011800606779 A CN2011800606779 A CN 2011800606779A CN 201180060677 A CN201180060677 A CN 201180060677A CN 103261626 A CN103261626 A CN 103261626A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- described cylinder
- piston
- engine generator
- aforementioned
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000006835 compression Effects 0.000 claims description 61
- 238000007906 compression Methods 0.000 claims description 61
- 239000000446 fuel Substances 0.000 claims description 54
- 238000000034 method Methods 0.000 claims description 25
- 238000010304 firing Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 19
- 230000033001 locomotion Effects 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 15
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 13
- 238000013022 venting Methods 0.000 claims description 12
- 230000004907 flux Effects 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 5
- 230000035699 permeability Effects 0.000 claims description 5
- 239000012811 non-conductive material Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 description 28
- 239000007789 gas Substances 0.000 description 28
- 239000002912 waste gas Substances 0.000 description 24
- 230000002000 scavenging effect Effects 0.000 description 14
- 238000006073 displacement reaction Methods 0.000 description 12
- 230000008859 change Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 239000004215 Carbon black (E152) Substances 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 229930195733 hydrocarbon Natural products 0.000 description 7
- 150000002430 hydrocarbons Chemical class 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- 230000009471 action Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 238000003475 lamination Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 239000003502 gasoline Substances 0.000 description 4
- 239000008041 oiling agent Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005183 dynamical system Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 241000447495 Equulites leuciscus Species 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003225 biodiesel Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- PEUPIGGLJVUNEU-UHFFFAOYSA-N nickel silicon Chemical compound [Si].[Ni] PEUPIGGLJVUNEU-UHFFFAOYSA-N 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000013500 performance material Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K3/00—Making engine or like machine parts not covered by sub-groups of B21K1/00; Making propellers or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/14—Making other products
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B71/00—Free-piston engines; Engines without rotary main shaft
- F02B71/04—Adaptations of such engines for special use; Combinations of such engines with apparatus driven thereby
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1869—Linear generators; sectional generators
- H02K7/1876—Linear generators; sectional generators with reciprocating, linearly oscillating or vibrating parts
- H02K7/1884—Linear generators; sectional generators with reciprocating, linearly oscillating or vibrating parts structurally associated with free piston engines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49231—I.C. [internal combustion] engine making
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Valve Device For Special Equipments (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Manufacture Of Motors, Generators (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
A free-piston engine generator comprising an engine cylinder, a piston configured to move within the cylinder, a cylinder housing having a bore for receiving the engine cylinder and a plurality of magnetisable elements arranged within the cylinder housing to be adjacent the cylinder along at least a portion of its length.
Description
Technical field
The present invention relates to a kind of free piston engine driving type electric generator and a kind of method of making engine generator.Especially, the present invention relates to the free piston engine driving type electric generator, this free piston engine driving type electric generator has such structure: this structure is arranged to the efficient of optimizing described generator and provides good control to piston position and piston motion by described generator.
Background technique
Can use the linear electrical generator generating that is connected to free piston engine, wherein reciprocating piston moves the generation flux change by the linearity of one or more electricity circles, for example, and as US-B-7318506 is disclosed.Along with piston moves through coil in cylinder, the switch magnetic flow in itself and the stator component interact to produce can be used to useful work or store after the electric power used.
Yet the efficient of this power generation system relies on the thickness of cylinder wall and generating element and the degree of approach of reciprocal piston in engine cylinder very much.
Summary of the invention
According to the present invention, a kind of free piston engine driving type electric generator is provided, comprising: engine cylinder; Configuration is used for piston mobile in described cylinder; Has the cylinder casing for the hole of admitting described engine cylinder; With a plurality of magnetizable elements, these a plurality of magnetizable elements are arranged in described cylinder casing along the contiguous described cylinder of at least a portion of the length of described cylinder.
In the present invention, the described a plurality of magnetizable elements of the permission of described cylinder casing are positioned as the specific arrangements of contiguous described cylinder and optimize the efficient of described free piston engine driving type electric generator, and the good control of described position of piston and piston motion is provided by described generator.
Preferably, described cylinder casing has one or more recesses, and these one or more recesses allow described a plurality of magnetizable element to be positioned as contiguous described cylinder.Preferably, described magnetizable element is positioned as direct physical and contacts described cylinder.Preferably, the one or more stators that are used as in the described generator in the described magnetizable element.
Preferably, described cylinder is fastened in the described cylinder casing by tackiness agent, and described tackiness agent provides the thermal insulation between described cylinder and the described cylinder casing.
Preferably, described cylinder casing comprises by the coaxial a plurality of elements that are assembled on the described cylinder.
Preferably, described cylinder casing comprises the cooling unit for the described cylinder of cooling.
Preferably, the internal diameter of the described cylinder of wall ratio that described cylinder has 5% little, wherein this wall thickness is typically less than about 2mm.
Preferably, described piston comprises alternately laminated magnetisable iron-core element and non magnetic isolated component.Preferably, air inlet system is positioned at the medium position along described cylinder, and this has simplified the layout of described motor, and makes this layout compacter in each firing chamber by allowing common air inlet system to supply fluid to.
And, by described air inlet system being positioned at the position away from outlet valve, the scavenging of combustion gas can greatly be improved by being provided at the uniflow scavenging stream in each firing chamber, and then this causes the unburned fuel hydrocarbon of improved efficient, minimizing and low cost.
Preferably, described air inlet system comprise air inletting device and fuel injection system the two, thereby the fuel that enters the firing chamber sprays and can take place during the inflation air enters.Described air inlet system also can comprise a plurality of air inletting device and at least one fuel injection system.If the described air inletting device in the described air inlet system and fuel injection system allow these features to share a common slip mouth valve jointly, then each in described air inletting device and the described fuel injection system is recessed in the space behind this slips mouth valve.This causes simpler, and cheap construction more thus.
Preferably, described air inletting device comprise slide mouthful valve and with all mouthful second valves of electromagnetic poppet valves, cylindrical valve or other control valve unit of valve tandem arrangement that slides as described.Described second valve can allow air to enter in the described chamber in any time that the described mouthful valve that slides is not covered by described piston, this allows the good control to the expansion ratio of response combustion incident, and with described piston by the described open position of mouthful valve and the location independent in the closed position restricted portion of sliding.
Preferably, described fuel injection system comprises that being arranged in described air enters two spargers on each side of second valve, is directly injected in the corresponding chamber to allow fuel, and whether opens or closes irrelevant with air inlet second valve.Ideally, described sparger is piezoelectric injector, with provide accurately, electric actuation and fuel injection control cheaply.
Preferably, described fuel injection system is configured to burner oil before slide-valve is about to cut out, the fuel that is sprayed to guarantee can not be brought to or take out of relief opening by the cleaning inflation before described exhaust valve closure, thereby reduced hydrocarbon (HC) effulent.
Preferably, ignition mechanism is provided in each chamber, to start the burning of the air-fuel mixture that is compressed.The use of spark ignition fuel and their relevant operation cycle produce inherently than compression igniter fuel and circulation particle emission still less.
Preferably, venting gas appliance is provided in each firing chamber to allow spent gas to discharge from described chamber after burning.
Preferably, described venting gas appliance is the electromagnetic poppet valves that is provided in each firing chamber, and described valve is coaxial with described cylinder, so that the limit area in the exhaust stream can reach 40% of described casing bore sectional area, thereby reduces exhaust back pressure in exhaust with between scavenging period.
Preferably, described cylinder has big at least ten times length than its diameter, because the low rate of change of the compression ratio that the piston displacement error produces when top dead center, this provides the compression ratio of minimizing to change in each circulation.
Preferably, described piston is constructed to elongated, and described engine cylinder has the hole, and this hole is sized to realize the compression ratio between 10:1 and the 16:1.Because blast (pinking), this compression ratio is higher than the compression ratio that can realize in conventional spark ignition engine.Preferably, described motor is for " fuel combination " of the operation of any mixture of gasoline, anhydrous alcohol and hydrous ethanol (flex-fuel) motor.Can optimize compression ratio by engine management system according to the mixture of employed specific ethanol/gasoline/water.
Equally, can obtain the expansion ratio bigger than twice compression ratio.Long expansion stroke allows more burnings can be passed to described piston, but also allows more times for control (namely the velocity of piston of measuring is changed and react).
Preferably, described air inlet system is positioned in from the suitable distance of outlet valve, to guarantee to realize the compression ratio between 10:1 and the 16:1.
According to the present invention, a kind of method of making engine generator also is provided, comprising: provide the cylinder that is constructed to hold at least one piston, the free to-and-fro motion in described cylinder of described at least one piston; Described cylinder is fastened in the cylinder casing, and described cylinder casing has the hole that is arranged to the described cylinder of admittance and support structure is provided for described cylinder; And a plurality of magnetizable elements layouts of contiguous described cylinder arrangement, thereby when described piston moves in described cylinder, along with described piston passes through described a plurality of magnetizable elements, described piston induction magnetic flux.
Preferably, one or more recesses are provided in the described cylinder casing, are used for admitting described a plurality of magnetizable elements.
Preferably, the one or more sections along the length of described cylinder of described cylinder casing are removed, in order to expose the one or more sections of described cylinder wall, described a plurality of magnetizable elements are disposed in the described recess, thereby they contact with described cylinder wall direct physical.
According to the present invention, a kind of method of making motor also is provided, comprising: provide the cylinder that is constructed to hold at least one piston, the free to-and-fro motion in described cylinder of described at least one piston; Extrusion cylinder housing, this cylinder casing are arranged to and keep described cylinder and provide support structure for described cylinder; With described cylinder is fastened in the described cylinder casing, thereby described cylinder wall is strengthened by the structure of described cylinder casing.
Preferably, described a plurality of magnetizable element is arranged to provides carrying to support to described cylinder.Preferably, the power that provides against described cylinder wall is provided described magnetizable element, and for example they can be biased against described cylinder wall, perhaps can be preloaded, so that they apply the power against described cylinder wall when being positioned as the described cylinder wall of vicinity.
Preferably, use the jointing material on the described cylinder outside that described cylinder is fastened in the described cylinder casing, wherein said jointing material provides the thermal insulation between described cylinder and the cylinder casing.
Preferably, described cylinder casing is provided with the cooling unit for the described cylinder of cooling.
Preferably, the inwall of described cylinder is coated with the drag reduction material, to reduce described inwall and along the frictional force between the piston of described inwall process.
Preferably, the thickness of described cylinder wall is less than 5% of the internal diameter of described cylinder, and the thickness of wherein said cylinder wall is typically less than 2mm.
According to the present invention, also provide a kind of vehicle with aforesaid free piston engine driving type electric generator.
With respect to typical free piston engine driving type electric generator structure, the structure of described engine generator of the present invention provides a plurality of important advantages, wherein two cylinder heads are fixed to two cylinders, and the electric machine assembly of separation is axially between described cylinder.
Described cylinder casing preferably passes through to form such as the extruding of the ductile material of aluminum alloy.Advantageously, elongate configuration allows to use extrusion manufacturing technology to form described cylinder casing, but not is used for casting or the large-scale CNC processing technique of conventional engine.Compare with casting, extrusion moulding provides manufacturing cycle time and the higher tolerance before machining operation faster, thereby reduces the cost of fine finishing part.Similarly, described cylinder can be formed by the shaping of the pipe cheaply manufacturing technology of extruding or other maturation.Therefore, this structure reduces the overall cost of engine cylinder assembly.
And, keep in the central section of described motor not fracture described motor body guarantee two firing chambers all with the highi degree of accuracy coaxial alignment in abutting connection with form, and provide continuous bearing surface for the described piston of waiting to go.This allows described piston to move through and by the suction port that the middle part arranges, as described here, makes the wear extent minimum of internal surface during the operation lifetime of described engine generator to described cylinder simultaneously.
Though described cylinder casing is preferably single extrusion element, alternatively, it can be by being formed coaxial being assembled on the common cylinder of a different set of extrusion element.For example, two extrusions can be placed on a side of air inlet system separately, and wherein said extrusion is assemblied on the described cylinder by coaxial.
Ideally, the wall that described cylinder casing squeezes out should be enough thick and/or strong, thereby the wear-resisting and sealing surfaces that its carrying permission cylinder wall provides is than the Bao Deduo that will need under its situation.Ideally, described cylinder casing has along the material of the length of described cylinder and removes section, and to form one or more recesses, these one or more recesses expose the wall that holds described cylinder within it ideally.Described recess is formed by described cylinder casing, preferably extend internally from outer surface, thereby described recess is outwards opened.Can be closely close described cylinder by a plurality of magnetizable elements being arranged in locate them in the described one or more recess, each magnetizable element preferably is fixed directly to the wall of described cylinder, and the wall of described cylinder separates their mobile magnetic circuit elements with described piston.
The thickness of described cylinder wall is of a size of the important determinant factor of electric efficiency, and should be as far as possible little of to obtain high efficiency.By using described cylinder casing and magnetisable stator component that sufficient bearing strength is provided, described cylinder wall does not need the support cylinder hydrodynamic pressure, and can make it quite thin to be subjected to manufacturing, assembling and wear-resisting constraint.
The internal surface of described cylinder and outer surface are provided for wear-resisting substrate and hot coating respectively.Hot coating can jointing material form be applied to the outer surface of described cylinder, so that fastening, insulation and carrying combination to be provided between described cylinder and cylinder casing.
And the advantage that cylinder is fastened on the layout in the described cylinder casing and provides is that the matching surface of corresponding part needn't be finish-machined to any specific criteria, except allowing described cylinder is engaged in the described cylinder casing.
Free piston engine driving type electric generator according to the present invention has many application.For example, it can be integrated into series hybrid electric vehicle dynamical system, this series hybrid electric vehicle dynamical system comprises the transient state electrical power storage and is applicable to the one or more drive motors of the power sources of motor vehicle in the station wagon, wherein the electric power that is produced by described free piston engine is accumulated in the electrical energy storage on the vehicle, in order to be sent to the drive motor of described vehicle when needed.
Power supply as station wagon, the present invention preferably operates in the two-cycle engine circulation of four cylinders that have spark ignition and be arranged with plane structure, thereby motor can laterally be installed in the front stall of vehicle or the below of back seat, compare with conventional internal-combustion engine, for the layout of passenger and storage space provides more design flexibilitys.
Each cylinder comprises free-piston, the movement of free-piston is induction power in the linear electrical generator that is arranged in around each cylinder, and free-piston move through comprise valve and ignition event regularly the whole bag of tricks and be controlled by adjusting the electric power that each stroke drew or supplied to piston from piston.The mobile quilt of piston is synchronous, so that the motor complete equilibrium, wherein ideally, piston comprises magnetizable element and non magnetic isolated component alternately.
And each cylinder is filled by air inlet system, and this air inlet system is introduced fluid in the described cylinder in the position away from each end of described cylinder.Described admission gear comprises the poppet valve of series connection and mouthful valve that slides, and makes the mobile timing of events of air inlet can be independent of described piston and is controlled with respect to the position of described cylinder.Waste gas leaves described cylinder from the exhaust valve mechanism of the end that is positioned at each cylinder.
The layout of the geometrical shape of described cylinder and admission gear and exhaust gear makes that the exhaust scavenging is done under the situation that enters limited mixing between fluid and the exhaust fluid.The geometrical shape of described firing chamber provides low surface area volume ratio, and the material of lower thermal conductivity is used in described piston top and the cylinder head, thereby minimum heat is discharged from described motor.The geometrical shape of described cylinder and piston provides the expansion ratio that is at least the twice compression ratio.
Yet layout and the quantity of employed cylinder depend on application, and for different application, the power operation circulation also can be changed, and for example: spark ignition IC burns; The homogeneous charge compression ignition internal combustion; And heterogeneous charge compression ignition.Features more of the present invention also can be burnt loop body outward now.The embodiment's of burning circulation outward example comprises the gas expander as the fluid that circulates from gas turbine discharging, organic Lang Ken circulation or Stirling with the present invention.In Stirling engine, be fed into the chamber that comprises compression working fluid at top dead center from the heat of outer Combustion Source.After the expansion, waste gas is discharged to the sealing cooling chamber before reentering the chamber by the air inlet system in the closed-loop path.
In various alternate embodiments, fuel may be hydrous ethanol, anhydrous alcohol-gasoline mixture or gasoline.The present invention also can be implemented as and use diesel oil, biodiesel, methane (CNG, LNG or biogas) or other gaseous state or liquid fuel.Among the combustion outer embodiment, can use the ignitable fuel of wide range.
Correspondingly, be combined with the energy storage system that peak transient electric power output demand is provided, the present invention is for the station wagon road vehicle application and for example be used for the low cost of stationary power generator of distributed power generation and many other application that high efficiency is considered for main design provide low-cost, high efficiency electric power supply.
Description of drawings
Now with reference to accompanying drawing example of the present invention is described, wherein:
Fig. 1 illustrates the longitudinal section with cylinder of the piston of example according to the present invention;
Fig. 2 is the longitudinal section of piston, and the structure of plane component is shown;
Fig. 3 is the vertical section of piston, and the arranged concentric of axle and plane component is shown;
Fig. 4 is the sectional view of the cylinder among Fig. 3, the magnetic flux that illustration causes in the switch stator component according to the movement of piston of the present invention;
Fig. 5 a is the vertical section of cylinder, and the linear electrical generator stator and the magnetic circuit that are formed by the porous member in the first piston are shown;
The vertical section that Fig. 5 b arranges for the instead of linear generator unit stator that is used for two adjacent cylinders, wherein linear electrical generator stator and magnetic circuit are formed by the porous member in the first piston;
Fig. 6 is the partial sectional view of the cylinder of illustration cylinder structure;
Fig. 7 is the more detailed longitudinal section of the layout of inlet poppet valves, inlet port valve and fuel injector during inflation displacement scavenging period;
Fig. 8 is the more detailed longitudinal section that comprises the venting gas appliance of exhaust poppet valve and actuator during exhaust phase;
Fig. 9 is illustrated in the piston position of the variation in the complete motor cycle period cylinder and at motor recurrence event this period time-shift diagram regularly;
Fig. 9 a is the form that is illustrated in the different compression ratio control gear that can be used for controlling compression ratio in the typical engine cycle;
Fig. 9 b is the flow chart corresponding with form among Fig. 9 a;
Figure 10 is the pressure volume diagram that is illustrated in complete motor typical cylinder pressure figure of cycle period;
Figure 11 be the compression stage terminal point and greatly about the spark ignition of the first Indoor Combustion event and when starting in the signal longitudinal section of the cylinder of top dead center;
Figure 12 is the signal longitudinal section of the expansion stage cylinder midway of first Room;
Figure 13 is the signal longitudinal section at expansion stage terminal point and the cylinder before inlet poppet valves is opened;
Figure 14 is the signal longitudinal section of the cylinder after inlet poppet valves is opened to be full of chamber 1, and permission aerated fluid pressure equals the low cylinder pressure in first Room;
Figure 15 for open at the exhaust poppet valve and simultaneously inlet poppet valves still open with the signal longitudinal section to the cylinder after the first Room scavenging;
Figure 16 is for having closed the signal longitudinal section of the cylinder of back during fuel is ejected into first Room in inlet poppet valves;
Figure 17 is the signal longitudinal section of the cylinder during oiling agent is ejected on the outer surface of piston;
Figure 18 opens for the exhaust poppet valve and inlet poppet valves is closed the back with mouthful valve that slides so that realize from the signal longitudinal section of the cylinder of first Room continuation combustion gas by piston displacement;
Figure 19 is the signal longitudinal section of the compression stage cylinder midway in first Room;
Figure 20 A and Figure 20 B illustrate the section according to the cylinder casing of engine generator of the present invention, and wherein Figure 20 A is attached with motor, the not attached motor of Figure 20 B;
Figure 20 C illustrates the vertical section by the cylinder casing of the engine generator of the plane X-X that indicates among Figure 20 A;
Figure 21 is the signal vertical section by the four cylinder engine structure of the air inlet system that comprises charging (electrical charge) compressor;
Figure 22 is the signal vertical section by the four cylinder engine structure of rotor machine; And
Figure 23 is the signal vertical section by the four cylinder engine structure of venting gas appliance.
Embodiment
Fig. 1 illustrates the example that comprises the motor of the linear cylinder 1 of hollow according to of the present invention.Piston 2 is provided in the cylinder 1, and piston 2 has constant diameter, and this constant diameter is configured to be slightly less than the internal diameter of cylinder 1, but the degree that only 1 length moves freely to piston 2 along cylinder.In addition, piston 2 is confined to and cylinder 1 coaxial alignment, thereby cylinder 1 is separated into first firing chamber 3 and second firing chamber 4 effectively, and each firing chamber has variable volume according to the position of piston 2 in cylinder 1.Any part of piston 2 does not extend to the outside of cylinder 1.Use first Room 3 first as example, each in the chamber 3,4 all has variable height 3a and fixed diameter 3b.
Preferably, cylinder 1 is symmetrical around its axis rotation, and with respect to the central plane symmetry perpendicular to its axis.Although other geometrical shape may be used to implement the present invention, for example have the piston of square or rectangular cross-section, the layout with circular cross-section is preferred.Cylinder 1 have along its length and provide away from the end, preferably at a succession of opening 1a, the 1b of central position.By the motion of piston 2, opening 1a, 1b form mouthful suction valve 6a that slides, and the suction port 6b operation that provides in conjunction with at least a portion around cylinder 1 is provided slip mouthful suction valve 6a, and is as described in detail later such.
Fig. 2 illustrates the piston 2 that has outer surface 2a and comprise central shaft 2c, and a succession of cartridge by diffusion of volatile treating agent is installed on the central shaft 2c.These cartridge by diffusion of volatile treating agent can be included in the piston top 2d at each place, end of central shaft 2c, and each piston top 2d preferably is made of the material such as the high temperature resistant of pottery and insulation.Piston tip face 2b is preferably nick, reducing first Room 3 and second Room 4 at the surface area at top dead center place and the ratio of volume, thereby reduces thermal loss.Certainly, if cylinder has different geometrical shapies, the structure of these elements is correspondingly adjusted so.
Laminated core element 2f also is installed on the piston shaft 2c.Each core element 2f is made of the lamination such as ferritic permeability magnetic material, with the eddy current loss during the minimizing power operation.
Isolated component 2g also is installed on the piston shaft 2c.Each isolated component 2g has low magnetic permeability and preferably being made of the lightweight material such as aluminum alloy ideally, and has space 2h of being formed in it further alleviating its weight, and reduces to be applied to the mechanical force on the motor of use isolated component thus.Isolated component 2g is included to fix the relative position of each iron-core element 2f, but also be used for the loss that each chamber 3,4 gas blowby (" blow-by " gases) are flowed out in gap between restricted passage piston wall and the cylinder wall, make the gross mass of piston 2 assemblies keep minimum simultaneously.
Supporting element 2i also is installed on the piston shaft 2c, is positioned at about 25% and 75% place of piston 2 length, makes it be locked in the cylinder 1 with the thermoinduction distortion of the axle that reduces piston 2 or damages the hidden danger of cylinder 1 in other mode.Each supporting element 2i is feature with loss of weight space 2j and has atomic diameter greater than iron-core element 2f and isolated component 2g.Supporting element 2i also has moulding outer surface 2k, is used for the weight of supporting piston 2 and any other lateral load of existence, makes frictional loss and wearing and tearing keep minimum simultaneously.Supporting element 2i preferably is made of the hard wear-resistant material such as pottery or carbon, and moulding outer surface 2k can coated low-friction material.Alternatively, supporting element can be introduced rolling bearing feature commonly used in the application of sliding.
Similar with the piston top, perhaps alternatively, supporting element 2i also can comprise the oily parts of control, with the lubricated wetness degree of control cylinder 1 during power operation.These parts comprise groove and oil control ring commonly used in the conventional internal-combustion engine.
The total length of piston is five times of its diameter preferably, and are enough to close fully mouthful valve that slides at least, thereby mouthful valve that slides never allows firing chamber 3 and 4 to be communicated with.
Fig. 3 is the sectional view of piston 2, piston shaft 2c is shown passes iron-core element 2f.Piston shaft end 2l is fixed to piston top 2d by mechanically deformation or with other mode, is firmly held so that be installed under the effect of element 2f, the 2g of piston shaft 2c, tension force that 2i keeps in piston shaft 2c.
Alternately arranging of iron-core element 2f and separator 2g makes lamination 2f with correct pitch location, with the part efficient operation as for example linear switched reluctance generator, this linear switched reluctance generator comprises mobile piston 2 and for example along the piston linear electrical generator device of a plurality of coils of separating of the length of reciprocating cylinder within it.
The example of being convenient to the linear electrical generator device 9 that the energy between piston 2 and the electric output unit 9e transmits that Fig. 4 illustrates around the outside of cylinder 1 and provides along at least a portion of its length.Linear electrical generator device 9 comprises a plurality of coil 9a of replacing along the length of linear electrical generator device 9 and a plurality of stator 9c of magnetizable element form.
Linear electrical generator device 9 can be a plurality of different motor types, for example linear switched reluctance generator.Shown in layout in, coil 9a by switching device 9b by switch, with in magnetisable stator 9c and piston lamination 2e internal induction magnetic field.For example, magnetisable stator 9c can compound by soft magnetism (SMC) material layer be pressed into or constitutes.In each method, stator constitutes by the conduction that is separated by non-conductive material and magnetizable element, and non-conductive material reduces the thermal loss of magnetic induction eddy current.
The transverse magnetic flux that produces in magnetisable stator 9c and piston lamination 2f under the effect of switch coil 9a also is indicated among Fig. 4.Linear electrical generator device 9 is as linear switched reluctance equipment or linear switch flux machine.Along with the motion of the flux circuit (flux circuit) of setting up and responding to by piston 2 is cut, produce electric power at electric output unit 9e place in piston lamination 2f in magnetisable stator 9c.This makes efficient generating apparatus become possibility under the situation of not using permanent magnet, permanent magnet may the high temperature condition in internal-combustion engine under demagnetization, and may significantly increase the cost of motor in other mode because permanent magnet uses expensive rare earth metal.
In addition, can use the control module 9d that comprises some different control gear, following.Different control gear is provided to realize the energy transmissibility of the expectation between piston 2 and the electric output unit 9e, in order to carry maximum electricity output, satisfy the kinetic characteristic of the expectation of piston 2 simultaneously, comprise compressibility and compression ratio, expansivity and expansion ratio and in each chamber 3, piston waiting time of 4 top dead center.
Control valve device can be used for controlling suction valve 6c and outlet valve 7b.By closing of control outlet valve 7b, control valve device can be controlled the startup of compression stage.In a similar fashion, control valve device also can be used for control waste gas recirculation (EGR), inflation and compression ratio.
The compression ratio control gear that is suitable for motor type also can be used.For example, with regard to switched reluctance machine, compression ratio control is applied to phase, frequency and the electric current of switch coil 9a by change and is partly realized.This changes the induced lateral magnetic flux by the speed of the motion of piston 2 cutting, and therefore changes the power that is applied to piston 2.Correspondingly, coil 9a is when outlet valve 7b closes and all can be used to the kinetic energy of control piston 2 subsequently between deceleration period at piston 2.
And, the spark ignition timing control apparatus can be used to respond the variation that is recycled to circulation (cycle-to-cycle variability) of any remnants of compression ratio, to guarantee that the adverse effect that these remnants change emissions from engines and efficient is reduced to minimum, as follows.Usually, the expection compression ratio when each compression stage finishes is that target compression ratio adds the error relevant with system change, such as the combustion incident and the control system characteristic that occur in the relative firing chamber 3,4.The spark ignition timing control apparatus can respond actual measurement speed and the acceleration of approaching piston 2 and adjust the spark ignition timing of events, thereby optimizes combustion incident to obtain the expection compression ratio when each compression stage finishes.
Usually, target compression ratio will be for depending on the constant of employed fuel 5a.Yet, the compression ratio error can come from firing chamber height 3a ± 20% variation.Therefore, if target compression ratio is 12:1, then actual compression ratio can be at 10:1 in the scope of 15:1.Therefore, come in advance by the spark ignition timing control apparatus or postpone the effectiveness affects that the spark ignition event will reduce noxious emission and this error.
In addition, fuel injection system can be used for controlling the injection timing of fuel 5a, makes it injectedly before mouthful valve 6a that slides is about to close enter firing chamber 3,4, to reduce hydrocarbon emissions between scavenging period.
And, temperature control apparatus can be provided, it comprises and is positioned at coil 9a, electronic device and other near the one or more temperature transducers the element of high temp. sensitive, cooling air flowing via compressor 6e in the temperature variation control system that detects with response.Temperature control apparatus can be communicated by letter with control valve device, with restriction engine power output when detecting lasting high temperature readings, damages to avoid motor.
Can preferably include waste gas (λ) sensor and pneumatic sensor by the other sensor that control module 9d uses, to determine to be ejected into the amount of indoor fuel 5a according to the amount of the air that adds for given fuel type.Correspondingly, fuel sensor also can be used for determining the type of employed fuel.
Fig. 5 a illustrates by any vertical section among the magnetisable stator component 9c, and coil 9a and stator 9c layout relative to each other are shown.In alternate embodiment shown in Fig. 5 b, wherein single stator 9c and coil 9a are used to respond to magnetic flux in two adjacent pistons 2.Compare with the structure shown in Fig. 5 a, this structure is owing to the minimizing of the quantity of required coil 9a has cost advantage.
Fig. 6 is the sectional view of the cylinder 1 that preferably is made of the low magnetic permeability material such as aluminum alloy.The internal surface 1c of cylinder 1 has hard wear-resistant material coating 1e, such as nickel silicon carbide, reaction bonded silicon nitride, chromium plating or other metal, pottery or other immersion coating.Be coated with insulation coating 1f such as zirconium oxide or other abundant insulating ceramic at outer surface 1d.Whole cylinder has the structure identical with cylinder this sectional view partly of close cylinder end 1g, and this will be tangible for the skilled person.
The air inlet system 6 that provides around cylinder 1 is provided Fig. 7, and air inlet system 6 comprises opening 6a and suction port 6b, opening 6a and aligning corresponding with opening 1a, 1b size in being provided at cylinder 1.Opening 6a in the air inlet system 6 is connected by passage 6h, and inlet poppet valves 6c is arranged in passage 6h.Passage 6h volume minimum perhaps has short length, little cross sectional area or both combinations so that during the expansion stage the uncontrolled expansion-loss minimum in the passage 6h.
Inlet poppet valves 6c separates passage 6h with the intake manifold 6f sealing that contiguous cylinder 1 as a suction port 6b part provides.Inlet poppet valves 6c is by poppet valve actuator 6d operation, and poppet valve actuator 6d can be automatically controlled calutron or other electric or mechanical device that is fit to.
When slide mouthful suction valve 6a and inlet poppet valves 6c all opened with respect to one in first Room 3 or second Room 4, intake manifold 6f was communicated with this chamber fluid via passage 6h.Air inlet system 6 preferably is provided with recess 6g, and recess 6g is arranged in and accepts inlet poppet valves 6c when inlet poppet valves 6c opens fully, can freely flow through passage 6h to guarantee fluid.
Suction port 6b also comprises charging compressor 6e, and it can be by electrically, mechanically or under the pressure wave effect that comes from suction port 6b operate.Charging compressor 6e also can be operated under the pressure wave effect of the venting gas appliance 7 that comes from each place, end that is provided at cylinder 1, as described in following, perhaps by conventional exhaust turbo-supercharging equipment operation.Charging compressor 6e can be positive displacement equipment, centrifugation apparatus, axial flow equipment, pressure wave equipment or any suitable compression device.Charging compressor 6e improves the pressure in the intake manifold 6f, so that when suction port 6b opened, the pressure in the intake manifold 6f was higher than the pressure in the chamber 3,4 that is connected to intake manifold 6f, thereby allows flowing of aerated fluid.
In air inlet system 6, also provide fuel injection system 5, such as magnetic injectors or piezoelectric injector 5.Although the single fuel injector 5 of location, middle part may be enough, a preferred end that fuel injector 5 is provided at the either side of inlet poppet valves 6c and is arranged in next-door neighbour's slip mouthful valve 6a.Fuel injector 5 preferably is recessed in the air inlet system 6, so that piston 2 can not have to pass through under the situation of obstacle and pass through slide mouthful suction valve 6a and suction port 6b.Fuel injector 5 is constructed to inject fuel in the corresponding chamber 3,4 by among mouthful suction valve 6a that slides each.
Lubricating fitting 10 also is provided, preferably be recessed in the air inlet system 6 and be arranged such that piston 2 can not have under the situation of obstacle through and by air inlet system 6, piston can be lubricated thus.
Fig. 8 illustrates the venting gas appliance 7 at each place, end that is provided at cylinder 1.Venting gas appliance 7 comprises by screw device or analog and can be attached to the cylinder head 7a of the end of cylinder 1 with removing.The exhaust poppet valve 7b that aims at the axis coaxle of cylinder 1 is positioned at each cylinder head 7a.Exhaust poppet valve 7b is by exhaust poppet valve actuator 7c operation, and exhaust poppet valve actuator 7c can be automatically controlled calutron or other electric or mechanical device.Correspondingly, when the inlet poppet valves 6c in first Room 3 or second Room 4 and exhaust poppet valve 7b all were closed, this chamber was sealed effectively, and comprise within it working fluid can be compressed or be allowed to expand.
Venting gas appliance 7 also comprises the gas exhaust manifold passage 7d that is provided in the cylinder head, when exhaust poppet valve 7d opens, under the action of pressure, waste gas can flow among the gas exhaust manifold passage 7d between the first contiguous Room 3 or the fluid in second Room 4 and the gas exhaust manifold passage 7d.Can be in Figure 20 see flowing of waste gas preferably in the layout of illustrative cylinder, its direction that shows exhaust-gas flow is the axis that is basically perpendicular to cylinder 1.
Also be provided at each end of cylinder 1 such as the ignition mechanism 8 of spark plug, ignition mechanism 8 is positioned at cylinder head 7a and preferably recessed, so that piston 2 does not have obstacle during the normal operating period of motor.
The diameter that the preferred coaxial arrangement of exhaust poppet valve 7b and the axis of cylinder 1 makes exhaust poppet valve 7b is than much bigger with respect to chamber 3,4 diameter in traditional internal-combustion engine.
Each cylinder head 7a is by such as the constituting with the good insulation performance material of the hard, wear-resistant of pottery, so that hot driving is minimum and avoid needs to independent valve base part.
Fig. 9 illustrates the time shifting figure according to motor of the present invention, and illustration piston 2 is in the movement of complete motor cyclic process.Although describe the operation of motor here with reference to first Room 3, but the technician will recognize that the operation of second Room 4 and the order of event are identical with first Room 3, but phase phase difference 180 degree, that is to say that the top dead center of first Room 3 occurs when the lower dead center of second Room 4 occurs.
Fig. 9 a illustrates to can be used for responding from influencing the variation of the signal that a plurality of different variablees of compression ratio receive with the form of a plurality of different compression ratio control gear of control compression ratio in motor cycle period.Fig. 9 b is the flow chart corresponding to Fig. 9 a.The compression ratio control gear can comprise the part of control module 9d previously discussed.
The equal illustration of form and flow chart can influence the master variable of compression ratio, a stage shown in Fig. 9 in the different phase (A is to F) of motor circulation.These variablees comprise: the compression ratio that user's power demand, the type of employed fuel, previous motor circulate and the kinetic energy of pinking situation, piston position and piston.Form and flow chart illustration are shown the various process of controlling compression ratio and taking place, and how different variablees influence these processes in whole motor circulation, but also illustration may influence the influence subsequently more than each process of a control procedure in whole motor circulation.As can be seen, in the final step of order, in case the expection compression ratio is determined, then adjust the best ignition timing of timing realization of spark event by the spark ignition timing control apparatus.
The event A that in the circulation of whole motor, emphasizes to F corresponding to Figure 10 in illustrative event A to F, Figure 10 illustrates the typical pressure volume diagram of firing chamber 3,4 in identical motor cyclic process.In the following discussion of Figure 11 to 19 with reference to figure 9 to 10 in outstanding event.
The motor circulation that consideration now is complete, when motor circulation beginning, first Room 3 comprises the compressed mixture that mainly is made of pre-mixed fuel and air, and small part is from the residual gas of previous circulation reservation.As everyone knows, the existence of the waste gas of controlled amounts is favourable for the valid function of motor, this is that the inflation throttle valve is loss source main in the conventional spark ignition engine because this can reduce or eliminate for the needs as the inflation throttle valve of engine power controlling device.In addition, because peak combustion temperatures and pressure are less than the motor that does not have waste gas to keep, so reduce the formation of nitrous oxide dusty gas.This is that the waste gas part does not promote the result of combustion reaction, and is because the carbon dioxide in the reservation gas and the high heat capacity of water.
Figure 11 illustrates piston with respect to the position of cylinder 1, is limited to the geometrical shape of first Room 3 of top dead center (A).This is also near the starting point of combustion phase AB.Distance between the top 2b of piston and the end of first Room 3 is at least half of diameter of first Room 3, thereby compares the surface area volume ratio that provides lower with the firing chamber in the conventional internal-combustion engine, and reduces the thermal loss of first Room 3 in the combustion process.Ignition mechanism 8 is recessed in the cylinder head 7a, thus piston 2 with the situation of uncontrollable mode near top dead center under, between the 2d of ignition mechanism 8 and piston top contact can not be arranged.But compression will continue, up to the motion of piston 2 by first Room 3 in since the pressure that the continuation that approximate adiabatic compression causes increases stop.With reference to Figure 10, burning expansion stage A B starts from ignition event (A).
Figure 12 is illustrated in the piston midway 2 of expansion stage (AB and BC) with respect to the position of linear electrical generator device 9.First Room 3 is moved under the action of pressure between first Room 3 and second Room 4 along with piston 2 and is expanded.Pressure in second Room 4 approximates the pressure in the intake manifold 6f in this greatly.The expansion of first Room 3 is owing to the effect of the linear electrical generator device 9 of the expansivity that is adjustable to realize expect is prevented from, to satisfy engine performance, efficient and emissions object.
Figure 13 is illustrated in the piston 2 at lower dead center place with respect to the position of first Room 3.At the terminal point (C) of expansion stage, the motion of piston 2 is prevented under the action of pressure between linear rotor machine 9 and first Room 3 and second Room 4.Pressure in second Room 4 approximates the high pressure in first Room 3 of the top dead center position (A) of first Room 3 in this greatly.Preferably, expansion ratio is at least the twice of compression ratio, and wherein compression ratio is in 10:1 arrives the scope of 16:1.Than the expansion ratio conventional internal-combustion engine similar to compression ratio, this provides the improved thermal efficiency.
Figure 14 illustrates the layout of piston 2 and air inlet system 6 and the initial flow that enters gas during air inlet balance stage (CD) in lower dead center.This layout also can be seen in Fig. 7.In this, because piston 2 slides through and opening 1a, the 1b that provides along the inwall 1c of cylinder 1 is provided, so mouthful suction valve 6a that slides opens.Because overexpansion reduces the hydrodynamic pressure in first Room 3, and because inlet air compressor 6e improves the pressure among the intake manifold 6e, so the pressure in first Room 3 is lower than the pressure in the intake manifold 6f.Approximately at this moment, inlet poppet valves 6c is opened by inlet poppet valves actuator 6d, approaches the pressure that equals intake manifold 6f place with Room 3, the first, the first Room 3 interior pressure that allow inflation to enter in the cylinder 1.In short time after inlet poppet valves 6c opens, exhaust poppet valve 7b also is opened, to allow waste gas to leave first Room 3 under the action of pressure between first Room 3 and the gas exhaust manifold passage 7d, the pressure in the gas exhaust manifold passage 7d is still near environment atmospheric pressure.
Figure 15 is illustrated in the position of piston 2 during inflation displacement scavenging period (DE).The waste gas scavenging continues displacement by the waste gas in first Room 3 and enters gas exhaust manifold passage 7d and be implemented in the introducing fresh charge of the pistons end of first Room 3 simultaneously.In case the inflation of specified amount has entered first Room 3, then inlet poppet valves 6c is closed and waste gas is discharged by mobile continuation of piston 2, as shown in figure 17, as explained later.
Figure 16 is illustrated in the layout of fuel injection time point (E) piston 2 and air inlet system 6.Fuel 5a is introduced directly on the approaching piston top 2d, it has rapid vaporized fuel, cooling piston top 2d and makes the loss of the unburned fuel as the wet film on the inwall 1c of cylinder 1 and discharge minimized effect, and unburned fuel also may be vaporized in second Room 4 in the expansion stage.
The position of piston 2 during Figure 17 illustrates lubricated (E), a spot of oiling agent periodically is being introduced directly into outer surface of piston 2a by lubricating fitting 10 between lubrication intervals when outer surface of piston 2a slides mouth valve 6a by air inlet.This layout makes the hydrocarbon emissions related with the oiling agent of wetting cylinder inner wall minimum, but also can reduce the dissolution degree of fuel in the cylinder inner wall oil film.Oil control ring feature 2e is included among piston top 2d and/or the supporting element 2i, with further minimizing first and second Room 3, the wetting degree of 4 in-lubricant walls.
Figure 18 is illustrated in the position of piston displacement scavenging period EF piston 2.Inlet poppet valves 6c is closed, and waste gas is discharged by mobile continuation of piston 2.At this moment, because the combustion incident in second Room 4, piston 2 just moves towards venting gas appliance 7, and reduces the volume of first Room 3.
Because the relatively large diameter of exhaust poppet valve, such as discussed above, can inflate displacement scavenging period (DE) and during piston displacement scavenging period (EF), all cause low exhaust back pressure loss near 40% of casing bore sectional area by the limit area that the exhaust of valve rod is flowed.
Figure 19 be illustrated in compression stage (FA) midway piston 2 with respect to the longitudinal section of the position of cylinder 1.When the waste gas ratio in the fluid of realizing making in first Room 3 was discharged near the waste gas of the abundance of specified level, exhaust poppet valve 7b was closed, compression stage (FA) beginning.Along with piston 2 accelerates under the action of pressure between first Room 3 and second Room 4 and slows down, compression continues with variable speed.During the expansion stage (AB and BC) and the effect by linear electrical generator device 9, the pressure in second Room 4 descend in this.The power of linear electrical generator can be adjusted, thereby realizes the compressibility of expectation, to satisfy engine performance, efficient and emissions object.Compressibilitys in first Room 3 are substantially equal to the expansivity and in contrast in the chamber 4.
Especially, how preferably Figure 20 A and Figure 20 B illustrate the cylinder 1 coaxial cylinder casing 11 that is arranged in, and cylinder casing 11 provides cooling unit for cylinder 1 provides support structure and also can be arranged to.Cylinder casing 11 is can be a little shorter than cylinder 1, and cylinder head 7a can fix or any other suitable manner is attached to cylinder casing 11 by screw, compresses keeping between the surface of each cylinder head 7a and each cylinder end 1d.Figure 20 C illustrates the section of the cylinder casing 11 that is attached with motor 9e.
Ideally, the wall that cylinder casing 11 squeezes out is enough thick and/or strong, thereby its carrying allows to provide the wall of cylinder 1 of wear-resisting and sealing surfaces than the Bao Deduo that needs under other situation.As above, generator of the present invention comprises a plurality of stators of a plurality of magnetic coil 9a of being arranged in the cylinder casing 11, magnetizable element 9c form and in this example as the piston 2 of conveyer (translator).
In the example shown, only a magnetizable element 9c is provided in the recess.Yet, should be noted that if desired according to the performance characteristics of expectation, two or more magnetizable element 9c recesses can be positioned in the single recess 15, and if any, not every recess 15 all must comprise the magnetizable element 9c of equal number.The internal surface of cylinder 1 and outer surface provide wear-resisting substrate and hot coating respectively.For example, the form that hot coating can jointing material is applied to the outer surface of cylinder 2, with between cylinder 1 and cylinder casing 11, provide firmly, the combination of insulation and carrying.
Figure 21 illustrates the exemplary engine that comprises four free piston engines and arranges, four free piston engines are arranged in circulation synchronously operates to produce the motor of complete equilibrium.In this structure, in this structure, the total length of the motor of the thermal efficiency generating 50kw with about 50% is approximately 1400mm.Cylinder casing 11 is fixed by screw or any mode that other is fit to is attached to structure housing 13, and structure housing 13 provides engine mechanical is attached to vehicle or all pedestals of the miscellaneous equipment of electric output unit 9e acquisition electric power as shown in Figure 22.Shell 14 provides the physics closure for motor, manifold and control system.On shell 14 for the entering of air inlet and exhaust stream, fuel and lubricant, hot driving, be used for starting and electric power output and the electric power input of control provide interface.
Figure 23 illustrates the end elevation of layout, and wherein cylinder head 7a holds four motors, waste gas via exhaust poppet valve 7b leave motor firing chamber 3,4 and the axis that is basically perpendicular to cylinder 1 flow.
Advantageously, according to the present invention, the narrow hole geometry of first Room 3 and be positioned at the air inlet system 6 at opposed end place of first Room 3 and the relative position of venting gas appliance 7 makes efficient and effective scavenging process become possibility is not almost mixed between inflation and the waste gas simultaneously.Compare with the scavenging in conventional two-cycle engine or the free piston type two-cycle engine, this scheme provides some advantages.
At first, can control the discharge of waste gas by the timing of exhaust valve closure exactly, not need to provide the recirculation of variable inner waste gas under throttle device and the situation that not have relevant motor pumping to lose as the method for a kind of engine power control.
Secondly, because the combustion flame leading edge in the fresh charge can mixedly not have a little not flammable waste gas of explosive fuel/AIR MIXTURES to interrupt, thereby the limited mixing between residual waste gas and the inflation can improve completeness of combustion.
Again, before being about to close, slip inlet port valve 6a introduces fuel 5a by fuel injector device 5, also have in about this time and introduce oiling agents by lubricating fitting 10, can not cause fuel or the entrainment of lubricant in the waste gas and cause the tail pipe hydrocarbon emissions.
And chamber 3,4 geometrical shape make, at top dead center, the distance between the top 2b of piston and chamber 3,4 the end is at least half of chamber 3,4 diameter.The rate of change of compression ratio was less than having similar diameter but chamber 3,4 the little conventional free piston engine of the degree of depth when therefore, piston displacement was to top dead center.As a result, first Room 3 that is caused by the variation in combustion in second Room 4, control system tolerance or other variability source is greatly reduced in the influence of the less variation of the degree of depth of top dead center.Power operation cyclical stability and control are greatly improved owing to this feature.
By stop the motion of piston 2 at top dead center (A), can realize the compression ratio of expecting.Target compression ratio can be in the scope of 10:1 to 16:1, and higher compression ratio can be realized the higher thermal efficiency usually.Can set different compression ratio target to different fuel, in use to utilize the octane value feature of special fuel or fuel mixture.Can be used as the input of control module 9d from the combination in any of the feedback signal of detonation sensor, piston motion, exhaust gas constituents and other power operation characteristic, to realize compressibility and the compression ratio of expectation.
Compare with other internal-combustion engine, the other benefit of present embodiment is, noise level is owing to the overexpansion circulation is lowered, and this causes low pressure difference in the outlet valve before being about to open.As a result, in conventional internal-combustion engine or free piston engine, propagate by vent systems and cause that the shock wave of exhaust sound is avoided substantially.
If the present invention is introduced in the passenger vehicle cheaply with series hybrid transmission system structure, then compare with existing internal combustion (IC) Engine Design, the vehicle user is lowered as the cost of the device that is used for automobile generating.The reduction of this cost is the result of a plurality of factors, comprises because the low cost of the fuel of every unit electric power that high thermal efficiency produces.Other factors comprises that the high tolerance dimension owing to relatively small amount is required the low cost of the parts manufacturing that causes and the low cost of the assembling of parts after this.And because a small amount of individual components and mobile part be required, thereby maintenance cost is lower.
And, the elimination of the complicated power transmission path of the heavily stressed waterpower sliding bearing characteristic of avoiding, comprise conventional internal-combustion engine of complicated auxiliary system and because the part amount that reduces and have the low cost that the engine material that the quantity such as the parts of the function design constraint of permanent magnet or special-purpose aluminium or Steel Alloy causes is less used in requirement all is to be beneficial to the factor that cost is reduced.
Compare with existing internal combustion (IC) Engine Design, the thermal efficiency also is modified.Except the factor of having discussed, improved efficient also is the result of good heat exchange, the part of the thermal loss of exhaust, motor and generator is delivered in the inflation, owing to during cylinder pressure load is transformed into crankshaft torque, eliminated the minimizing of the frictional loss that cylinder wall load causes and the endurance by the variable aerated flow when the air intake pressurized fully and the recirculation of variable inner waste gas rather than entered the elimination of the restriction loss that engine power adjustment that air stream realizes causes by the throttling as the conventional spark-ignition motor.
In addition, compare with other known free piston engine design, the tailpipe thing (comprises NO
x, hydrocarbon and particle emission) be reduced.The minimizing of this tailpipe thing is causing by a plurality of factors, comprise: improved compression ratio control in each circulation that is caused by elongated generator geometrical shape, its high electrical control that causes during compression stroke piston being moved is weighed, and causes piston displacement error low when top dead center thus; And for reducing decision NO
xThe peak combustion temperatures of formation and the composition of the variable residual exhaust gases of the compressive charge of pressure.
Claims (39)
1. a free piston engine driving type electric generator comprises: engine cylinder; Be configured to piston mobile in described cylinder; Has the cylinder casing for the hole of admitting described engine cylinder; And a plurality of magnetizable elements, these a plurality of magnetizable elements are arranged in described cylinder casing along the contiguous described cylinder of at least a portion of the length of described cylinder.
2. engine generator according to claim 1, wherein said cylinder casing has one or more recesses, and these one or more recesses allow described a plurality of magnetizable element to be positioned as the wall of contiguous described cylinder.
3. engine generator according to claim 2, wherein said recess are arranged to and allow described a plurality of magnetizable elements to contact with the wall direct physical of described cylinder.
4. according to each described engine generator in the aforementioned claim, wherein said magnetizable element is constructed to the wall of described cylinder is applied power.
5. according to each described engine generator in the aforementioned claim, wherein said magnetizable element is made of the conducting element that separates by non-conductive material and magnetizable element.
6. according to each described engine generator in the aforementioned claim, wherein said cylinder is secured in the described cylinder casing by tackiness agent, and described tackiness agent provides thermal insulation between described cylinder and described cylinder casing.
7. according to each described engine generator in the aforementioned claim, wherein said cylinder casing comprises by the coaxial a plurality of elements that are assembled on the described cylinder.
8. according to each described engine generator in the aforementioned claim, wherein said cylinder casing comprises the cooling unit for the described cylinder of cooling.
9. according to each described engine generator in the aforementioned claim, wherein said cylinder has than 5% of the internal diameter of described cylinder little wall thickness.
10. engine generator according to claim 9, the wall thickness of wherein said cylinder is less than about 2mm.
11. according to each described engine generator in the aforementioned claim, wherein the fluid inletting device is positioned at the medium position along described cylinder.
12. according to each described engine generator in the aforementioned claim, wherein said fluid inletting device comprises air inletting device and fuel injection system.
13. according to each described engine generator in the aforementioned claim, wherein said air inletting device comprises slide mouthful valve and second valve.
14. according to each described engine generator in the aforementioned claim, wherein said air inletting device comprises slide mouthful valve and electromagnetic poppet valves.
15. according to each described engine generator in the claim 12 to 14, wherein said fuel injection system comprises two spargers on the every side that is arranged in described air inletting device.
16. according to claim 14 or 15 described engine generators, wherein said fuel injection system is constructed to burner oil before described slide-valve is about to cut out.
17. according to each described engine generator in the aforementioned claim, further comprise the spark ignition device that is constructed in each firing chamber, produce spark.
18. according to each described engine generator in the aforementioned claim, further comprise the venting gas appliance that is provided in each firing chamber.
19. engine generator according to claim 18, wherein said venting gas appliance are the electromagnetic poppet valves that is provided in each firing chamber, described valve is coaxial with described cylinder.
20. according to each described engine generator in the aforementioned claim, wherein
Described piston is constructed to elongated; And
Described engine cylinder has the hole, and this hole is sized to make and obtains up to the compression ratio of 15:1 and the expansion ratio bigger than the twice of described compression ratio.
21. according to each described engine generator in the aforementioned claim, wherein said piston comprises alternately laminated iron-core element and non magnetic isolated component.
22. according to each described engine generator in the aforementioned claim, wherein said cylinder has than the diameter of described cylinder big ten times length at least.
23. according to each described engine generator in the aforementioned claim, the permeability of wherein said cylinder casing is less than or equal to the permeability of described cylinder.
24. a vehicle has according to each described engine generator in the aforementioned claim.
25. a method of making engine generator comprises: provide the cylinder that is constructed to hold at least one piston, the free to-and-fro motion in described cylinder of described at least one piston; Described cylinder is fastened in the cylinder casing, and described cylinder casing has the hole that is arranged as the described cylinder of admittance and support structure is provided for described cylinder; And a plurality of magnetizable elements of contiguous described cylinder arrangement, thereby when described piston moves in described cylinder, along with described piston passes through described a plurality of magnetizable elements, described piston induction magnetic flux.
26. method according to claim 25 further is included in one or more recesses are provided in the described cylinder casing, these one or more recesses allow described a plurality of magnetizable element to be positioned as contiguous described cylinder.
27. being arranged to, method according to claim 26, wherein said recess allow described a plurality of magnetizable elements to contact with the wall direct physical of described cylinder.
28. according to each described method in the claim 25 to 27, wherein said magnetizable element is constructed to the wall of described cylinder is applied power.
29. according to each described method in the claim 25 to 28, wherein said magnetizable element is stacked.
30. according to each described method in the claim 25 to 29, further comprise the one or more sections that remove described cylinder casing along the length of described cylinder, with the one or more sections of the wall that exposes described cylinder; And described a plurality of magnetizable elements are arranged in the described recess, thereby described a plurality of magnetizable element contacts with the wall direct physical of described cylinder.
31. a method of making motor comprises: provide the cylinder that is constructed to hold at least one piston, the free to-and-fro motion in described cylinder of described at least one piston; Extrusion cylinder housing, described cylinder casing are arranged to and keep described cylinder and be described cylinder structure support; And described cylinder is fastened in the described cylinder casing, thereby the structure of the wall of described cylinder by described cylinder casing is enhanced.
32. method according to claim 31 further comprises one or more magnetizable elements are arranged as providing carrying to support to described cylinder.
33. according to claim 31 or 32 described methods, comprise that further the jointing material on the outside of using described cylinder is fastened on described cylinder in the described cylinder casing, wherein said jointing material provides the thermal insulation between described cylinder and the described cylinder casing.
34. according to each described method in the claim 31 to 33, further be included as the cooling unit that described cylinder casing is provided for cooling off described cylinder.
35. according to each described method in the claim 31 to 34, further be included in the inwall of described cylinder and the piston of advancing along described inwall between apply described inwall with the drag reduction material.
36. according to each described method in the claim 31 to 35, comprise that further thickness with the wall of described cylinder is decreased to than 5% of the internal diameter of described cylinder little thickness.
37. method according to claim 36 further comprises the thickness limits of the wall of described cylinder for less than about 2mm.
38. according to each described method in the claim 31 to 37, further comprise and use magnetizable element and non magnetic isolated component alternately to constitute described piston.
39. according to each described method in the claim 31 to 38, further be included in one or more recesses are provided in the described cylinder casing, these one or more recesses allow a plurality of magnetizable elements to be positioned as contiguous described cylinder.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1021406.2 | 2010-12-17 | ||
| GBGB1021406.2A GB201021406D0 (en) | 2010-12-17 | 2010-12-17 | Free piston engine generator |
| PCT/GB2011/051154 WO2012080709A1 (en) | 2010-12-17 | 2011-06-21 | Free piston engine generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103261626A true CN103261626A (en) | 2013-08-21 |
| CN103261626B CN103261626B (en) | 2016-01-20 |
Family
ID=43567358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180060677.9A Active CN103261626B (en) | 2010-12-17 | 2011-06-21 | Free piston engine driving type electric generator |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20130255080A1 (en) |
| EP (1) | EP2542768A1 (en) |
| KR (1) | KR20130129245A (en) |
| CN (1) | CN103261626B (en) |
| BR (1) | BR112013015180B1 (en) |
| GB (2) | GB201021406D0 (en) |
| WO (1) | WO2012080709A1 (en) |
| ZA (1) | ZA201303751B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498733A (en) * | 2013-09-29 | 2014-01-08 | 北京理工大学 | Movement and control method for free piston internal combustion engine generator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2494217B (en) * | 2012-01-19 | 2014-10-08 | Libertine Fpe Ltd | A linear electrical machine with a piston and axially segmented cylinder |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3224723A1 (en) * | 1982-07-02 | 1984-01-05 | Wolfgang 8501 Oberasbach Täuber | Free-piston internal combustion engine with generator |
| US5146123A (en) * | 1990-11-06 | 1992-09-08 | Yarr George A | Linear reciprocating alternator |
| US6199519B1 (en) * | 1998-06-25 | 2001-03-13 | Sandia Corporation | Free-piston engine |
| RU2186231C2 (en) * | 2000-03-06 | 2002-07-27 | Дальневосточный государственный университет путей сообщения | Free-piston engine |
| US20030024492A1 (en) * | 1999-12-22 | 2003-02-06 | Anders Malmquist | Device including a combustion engine, a use of the device, and a vehicle |
| CN1978877A (en) * | 2006-11-03 | 2007-06-13 | 江苏大学 | Free-piston generator |
| WO2009098970A1 (en) * | 2008-02-07 | 2009-08-13 | Takaitsu Kobayashi | Linear generator |
| CN102667060A (en) * | 2009-12-24 | 2012-09-12 | 自由活塞式发动机有限公司 | Free piston engine |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3556265A (en) * | 1968-10-01 | 1971-01-19 | Gen Motors Corp | Disc brake caliper housing |
| DE1945924A1 (en) * | 1969-09-11 | 1971-03-18 | Lenger Karl Werner | Free piston machine |
| US4602174A (en) * | 1983-12-01 | 1986-07-22 | Sunpower, Inc. | Electromechanical transducer particularly suitable for a linear alternator driven by a free-piston stirling engine |
| US4523549A (en) * | 1984-03-21 | 1985-06-18 | Lacy James W | Internal combustion engine |
| IE56865B1 (en) * | 1984-09-06 | 1992-01-01 | Integrated Circuit Systems Ltd | Connector apparatus |
| US5522302A (en) * | 1994-05-31 | 1996-06-04 | Compact Air Products, Inc. | Cylinder and piston assembly and method of porting |
| US5666725A (en) * | 1994-05-31 | 1997-09-16 | Patent Master, Inc. | Engine remanufacture by adhesively retained cylinder liners |
| WO1998040188A1 (en) * | 1997-03-12 | 1998-09-17 | Pita Witehira | A method of engine manufacture |
| US5757093A (en) * | 1997-03-13 | 1998-05-26 | Susliaev; Konstantin | Electromagnetically powered engine |
| TW494187B (en) * | 1997-06-11 | 2002-07-11 | Howa Machinery Ltd | A rodless power cylinder |
| US6109222A (en) * | 1997-11-24 | 2000-08-29 | Georgia Tech Research Corporation | Miniature reciprocating combustion-driven machinery |
| US5901556A (en) * | 1997-11-26 | 1999-05-11 | The United States Of America As Represented By The Secretary Of The Navy | High-efficiency heat-driven acoustic cooling engine with no moving parts |
| TW396249B (en) * | 1998-01-20 | 2000-07-01 | Someya Mitsuhiro | Rodless cylinder |
| US6293101B1 (en) * | 2000-02-11 | 2001-09-25 | Fantom Technologies Inc. | Heat exchanger in the burner cup of a heat engine |
| US7318506B1 (en) | 2006-09-19 | 2008-01-15 | Vladimir Meic | Free piston engine with linear power generator system |
| WO2009070771A1 (en) * | 2007-11-28 | 2009-06-04 | Tiax Llc | Free piston stirling engine |
| GB2476496A (en) * | 2009-12-24 | 2011-06-29 | Libertine Fpe Ltd | Piston for an engine generator, eg a free piston engine |
-
2010
- 2010-12-17 GB GBGB1021406.2A patent/GB201021406D0/en not_active Ceased
-
2011
- 2011-06-21 KR KR1020137018614A patent/KR20130129245A/en not_active Application Discontinuation
- 2011-06-21 WO PCT/GB2011/051154 patent/WO2012080709A1/en active Application Filing
- 2011-06-21 CN CN201180060677.9A patent/CN103261626B/en active Active
- 2011-06-21 GB GB1110442.9A patent/GB2482375B/en active Active
- 2011-06-21 US US13/992,995 patent/US20130255080A1/en not_active Abandoned
- 2011-06-21 EP EP11743855A patent/EP2542768A1/en not_active Withdrawn
- 2011-06-21 BR BR112013015180-3A patent/BR112013015180B1/en active IP Right Grant
-
2013
- 2013-05-23 ZA ZA2013/03751A patent/ZA201303751B/en unknown
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3224723A1 (en) * | 1982-07-02 | 1984-01-05 | Wolfgang 8501 Oberasbach Täuber | Free-piston internal combustion engine with generator |
| US5146123A (en) * | 1990-11-06 | 1992-09-08 | Yarr George A | Linear reciprocating alternator |
| US6199519B1 (en) * | 1998-06-25 | 2001-03-13 | Sandia Corporation | Free-piston engine |
| US20030024492A1 (en) * | 1999-12-22 | 2003-02-06 | Anders Malmquist | Device including a combustion engine, a use of the device, and a vehicle |
| RU2186231C2 (en) * | 2000-03-06 | 2002-07-27 | Дальневосточный государственный университет путей сообщения | Free-piston engine |
| CN1978877A (en) * | 2006-11-03 | 2007-06-13 | 江苏大学 | Free-piston generator |
| WO2009098970A1 (en) * | 2008-02-07 | 2009-08-13 | Takaitsu Kobayashi | Linear generator |
| CN102667060A (en) * | 2009-12-24 | 2012-09-12 | 自由活塞式发动机有限公司 | Free piston engine |
| CN102770637A (en) * | 2009-12-24 | 2012-11-07 | 自由活塞式发动机有限公司 | Combustion management system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498733A (en) * | 2013-09-29 | 2014-01-08 | 北京理工大学 | Movement and control method for free piston internal combustion engine generator |
| CN103498733B (en) * | 2013-09-29 | 2016-04-06 | 北京理工大学 | A kind of motion control method of free-piston internal combustion engine generator |
Also Published As
| Publication number | Publication date |
|---|---|
| US20130255080A1 (en) | 2013-10-03 |
| EP2542768A1 (en) | 2013-01-09 |
| GB201110442D0 (en) | 2011-08-03 |
| GB201021406D0 (en) | 2011-01-26 |
| ZA201303751B (en) | 2019-01-30 |
| CN103261626B (en) | 2016-01-20 |
| BR112013015180B1 (en) | 2021-02-09 |
| BR112013015180A2 (en) | 2020-06-09 |
| GB2482375B (en) | 2012-07-18 |
| GB2482375A (en) | 2012-02-01 |
| WO2012080709A1 (en) | 2012-06-21 |
| KR20130129245A (en) | 2013-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102770637B (en) | Combustion managing system | |
| EP2679768B1 (en) | Electromagnetic Engine | |
| EP0766781B1 (en) | Linear electrical energy generator | |
| JP2022188231A (en) | High-efficiency linear combustion engine | |
| EP1287233B1 (en) | Free-piston internal combustion engine with valves located in pistons | |
| CN104115377B (en) | Linear electrical generator | |
| US20110133486A1 (en) | Electromagnetic Hybrid Rotary Engine | |
| CN103261626B (en) | Free piston engine driving type electric generator | |
| EP3728866B1 (en) | Cylinder system with relative motion occupying structure | |
| CN103827465A (en) | Piston for a free piston engine generator | |
| US11352942B2 (en) | Four-stroke relative motion cylinder with dedicated compression space | |
| WO2010014890A1 (en) | Electricity generator using two-stroke engine | |
| AU4205001A (en) | Improvements to free-piston engines | |
| JPH1127923A (en) | Power-generating equipment | |
| RU2176025C1 (en) | Power-generating heat engine | |
| CZ2009860A3 (en) | Linear free-piston engine-generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |