CN104863707A - Internal combustion engine with double-crank mechanism - Google Patents
Internal combustion engine with double-crank mechanism Download PDFInfo
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- CN104863707A CN104863707A CN201410057087.6A CN201410057087A CN104863707A CN 104863707 A CN104863707 A CN 104863707A CN 201410057087 A CN201410057087 A CN 201410057087A CN 104863707 A CN104863707 A CN 104863707A
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Abstract
An internal combustion engine comprises at least one cylinder; a piston which reciprocates in the cylinder, thus a working chamber being established above the piston in the cylinder; a piston rod which is rigidly fixed on the piston on the side surface far away from the working chamber and furthermore guided to linearly move and seal through an opening in the cylinder subarea below the piston, thus a fresh air chamber being arranged between the piston and the subarea and the compressed fresh air being fed to the working chamber from the fresh air chamber; and a double-crank mechanism which is arranged on the side surface, far away from the piston, of the subarea and comprises two cranks which rotate in the reverse directions at the same speed and are pivotally connected on the piston rod by the aid of connection rods. Crank disks of the double-crank mechanism can be used as pumping components of liquid pumps and/or as rotors of motors and/or for actuating feeding circulation valves. The connection rods can be attached to the crank disks by simple, absorb retention short axles.
Description
Technical field
The present invention relates to a kind of internal-combustion engine with double crank mechanism.
Background technique
Such as, known a kind of internal-combustion engine with double crank mechanism from DE 102 47 106 B4.Different from the internal-combustion engine (wherein piston is connected on crankshaft by single connecting rod) of routine, the internal-combustion engine with double crank mechanism has many advantages.Double crank mechanism can not apply transverse force to piston completely, and friction can be caused like this to reduce, and the less and piston of vibratory stimulation can be smooth and not have piston skirt, is conducive to the lubrication (if necessary) of the sliding contact of piston ring/cylinder wall like this.Because the running shaft of rotary crank dish relative on direction offsets relative to the transverse direction of the linear motion of piston rod, therefore move to the process of BDC at piston from TDC, the angle of swing of crank disc is unequal with the angle of swing of crank disc when moving to TDC from BDC.This may be used for producing burning and odds for effectiveness.Identical stroke of piston need less crank radius this true prove further moment of torsion transmission be evenly.
Summary of the invention
Target of the present invention improves the characteristic of internal-combustion engine.
The solution of this target is realized by the feature of claim 1,4,5,6,7,8,9 and 10.
Dependent claims is used for advantageous embodiment and the further development of internal-combustion engine.
The present invention can be widely used in the piston IC engine of most of type, such as single cylinder and multicylinder engine; Alto, diesel oil and gas engine; 2 strokes and 4 two-stroke engines.
Accompanying drawing explanation
Hereafter further details will be utilized to describe the present invention in detail by means of the schematic diagram in example:
Shown in the drawings:
Fig. 1 is the schematic diagram of the cross-sectional centerline of internal-combustion engine by having double crank mechanism,
Fig. 2 is the schematic diagram of liquid-circulating,
Fig. 3 is the view of the double crank mechanism of the coupling describing piston rod,
Fig. 4 is the schematic diagram of the actuating of feed cycle valve,
Fig. 5 is the schematic diagram of multi-cylinder engine,
Fig. 6 is the schematic diagram of another multi-cylinder engine
Fig. 7 be general internal combustion engine compare with the size of the internal-combustion engine with double crank mechanism and
Fig. 8 is the piston of 2 cylinder IC engines with double crank mechanism and the Perspective Principles figure of crank mechanism,
List of reference numbers
10 cylinder 12 pistons
14 piston rod 16 openings
18 subregion 20 working rooms
21 cylinder head 24 fresh air rooms
26 gas-entered passageway 28 suction valves
30 relief opening 32 connecting passages
34 intervening valve 36 gas-entered passageways
38 suction valve 40 exhaust passages
42 outlet valve 44 crank boxs
46 crank disc 48 crank discs
50 connecting rod 52 connecting rods
54 crank pin 56 crank pins
60 liquid subregion 62 pump channels
64 pump channel 66 lug bosses
70 liquid sump 72 liquid pumps
74 fluid passage 76 fluid passages
78 service duct 80 elements
82 element 84 elements
86 return passage 88 valves
90 valve 92 bearing pins
94 bearing pin 96 tabs
98 tab 100 wheel shafts
102 wheel shafts 104 lead wall
106 extension 108 fluted discs
110 cogwheel 112 cam faces
114 cam face 116 tappets
118 tappet 120 rocking bars
122 rocking bar 130 camshafts
132 camshafts 140 coil
142 dish 144 cranks
146 crank 148 crankshafts
150 trunnion shaft 152 axles
154 axle 156 circumference gear devices
158 circumference gear devices
Embodiment
According to Fig. 1, internal-combustion engine comprises cylinder 10, and wherein piston 12 is moveable along the axle of cylinder.Piston 12, such as, does not have skirt, preferably be rigidly connected on piston rod 14, described piston rod is moveable linearly and the Sealing had through hole 16, and described Sealing is formed in subregion 18, the inside of cylinder 10 and downside completely cut off by this subregion, as shown in Figure 1.In this way, working room 20 is formed at above piston 12 between piston 12 and the upper wall of cylinder head 22 or cylinder, and fresh air room 24 is formed between piston 12 and subregion 18.The suction port be formed in the lower area of fresh air room 24 is connected on suction port 26, and this suction port can be closed with suction valve 28.Piston 12 can be formed as one-piece element with piston rod 14 and together with form T-shaped.
Outlet as shown in Figure 1 enters connecting passage 32 from the lower area of fresh air room 24, intervening valve 34 is arranged in described connecting passage and is connected on gas-entered passageway 36, and this gas-entered passageway leads to the working room 20 of internal-combustion engine and can close by means of lifting type suction valve.
Exhaust passage leads directly to working room 20 by the unshowned vent systems in internal-combustion engine, leads to outdoor.Exhaust passage is closeable by means of the outlet valve 42 of poppet type.
Piston rod 14 leads to the inside of double crank mechanism shell 44 through subregion 18, and wherein two crank discs 46 and 48 are rotatably supported on around running shaft A and B that housing fixes.Crank disc has circumferential gearing having the circumference place of same diameter (illustrating with two dotted lines), and described gearing is engaged with each other.Running shaft A and B of crank disc 49 and 48 is arranged in the plane pointed to perpendicular to piston rod 14 and equidistant with piston rod 14.Piston rod 14 extends to the below of this plane, and wherein running shaft A and B makes its lower end in the top dead center illustrated of piston 12 be positioned at the below of running shaft A and B.The lower end of piston rod 14 is pivotably connected on crank pin 55 and 56 via connecting rod 50,52, and the running shaft that described crank pin is eccentric in crank disc radially-inwardly positions from the circumferential gearing of crank disc.
Fig. 1 illustrates only with the position of the piston 12 at the lower dead center place shown in round dot dotted line.
The 26S Proteasome Structure and Function of above-mentioned internal-combustion engine is well-known.
When operating in four stroke cycle, when piston 12 is positioned at the lower dead center place of exhaust stroke, valve 34 and 38 closes and valve 28 and 42 is opened.The process of exhaust stroke from working room's outwards and simultaneously inhale fresh air, the charge of burning pushes in fresh air room 24 by piston.In aspirating stroke process subsequently, valve 28 and 42 closes and valve 34 and 38 is opened, and the fresh air being therefore arranged in connecting passage 32 and fresh air room 24 is forced to by the valve 34 and 38 opened and enters working room 20.In compression stroke process subsequently, only suction valve 28 is opened, and therefore by the compression of the fresh air in working room, fresh air is inhaled in fresh air room 24.In working stroke (combustion stroke) subsequently, except intervening valve 34, all valves are all closed, and therefore in working stroke process, the fresh air sucked at previous compression stroke place to be pushed in connecting passage 32 and to carry out precompression herein.In exhaust stroke subsequently, described circulation starts again.Therefore described internal-combustion engine utilizes the inside charging combined to operate, and due in aspirating stroke process, about the fresh air of the twice of fresh air room volume enters in working room 20, therefore boosts immediately after start-up.
When sense of rotation contrary shown in crank disc 46 and 48, wherein as clearly seen in the drawings, left crank disc 46 in Fig. 1 turns clockwise and right crank 48 is rotated counterclockwise, and crank disc is greater than the angle of swing of crank disc from BDC to TDC from the angle of swing of TDC to the BDC of piston.By the appropriate design of double crank mechanism, the degree in crank angle that working stroke extends to 230 ° can be realized, this be conducive to perfect combustion and evenly moment of torsion development.
In FIG, three pecked lines illustrate the liquid subregion 60 being arranged in crank shell 44, described liquid subregion 60 forms liquid storage groove or pump channel 62 and 64 in the region of the lower circumference part of crank disc, described groove or passage form according to the circumference of crank disc, stretch in groove or passage to make the circumference gear device of crank disc.After rotation, pump channel forms liquor pump together with the circumference gear device of crank disc.
The function of liquor pump is described in detail in fig. 2, and Fig. 2 illustrates the schematic diagram of liquid-circulating.
According to Fig. 2, lug boss 66(Fig. 1 of crank box 44) form liquid sump 70, the degree of depth of this lug boss is determined by the position of the piston rod 14 of the piston 12 in BDC.Only be designed for simple Liquid pump 72 withdrawn fluid from liquid sump 70 of the non-pressurized delivered of liquid, and supply fluid to the ingress of the passage 62 and 64 in the face of piston rod 14.From here, after crank disc rotates, liquid is sent to the fluid passage 74 and 76 in the outlet being connected to described pump channel by pump channel 62 and 64.
Fluid passage 74 and 76 is connected on service duct 78, can by described service duct to supply liquid such as elements 80,82,84.After flowing through element, liquid leaves from return passage 86 and is oppositely sent to entrance and/or the liquid sump 70 of pump channel 62,64,84.
Described liquid is preferably the lubricant oil of the lubrication for engine components (such as transmission device), and described element can be connected to by coupling, crank disc and connecting rod bearing etc. in the one or both in two crank discs.In addition, lubricant oil may be used for cooling internal combustion engines, and in described internal-combustion engine, lubricant oil flows through suitable cooler.Liquid level in oil pump 66 is arranged, to make piston rod 14 and its connecting rod link just stretch in liquid, thus can not produce unnecessary spatter loss.
Due to two passages 62 and 64 and their pump function, even if the advantage of the example of above-mentioned lubrication/cooling system is also can guarantee liquid supply in long curve.Be arranged on shown in valve 88 in fluid passage 74 and 76 and 90(Fig. 2) guarantee in the one that oil can not be back in passage 62 and 64.Valve 88 and 90 it is contemplated that as simple safety check and preferably near the entrance of pumping passage.
Can modify to described system in several ways.Such as, only a crank disc with corresponding groove can be used as pump.Due to the contrary sense of rotation of crank disc, therefore the entrance and exit of pump channel is reverse.
The main advantage of the internal-combustion engine of double-crank is equipped with to be the crank box be separated with piston chamber completely.Due to guiding without transverse force and the appropriate combination of material between the outside of piston or one or more piston ring and the inwall of cylinder of piston, piston does not have lubrication needs, therefore lubricant oil can not be aging because being subject to the impact of products of combustion and high temperature, and can be counted as the life-span and fill.
Fig. 3 schematically shows the example of the connection of piston rod 14 and crank disc 46 and 48.Crank disc 46 and 48 has bearings pin 92 and 94, and by described bearings pin, crank disc is rotatably installed on crank box.In addition, crank disc 46 and 48 is equipped with crank pin 54 and 56, and connecting rod 50 and 52 is arranged on described crank pin.In examples as shown in figure 3, the lower end of piston rod 14 has two lugs or tab 96 and 98 on opposite sides thereof, described lug or tab arranged parallel to each other and be formed with through hole or eyelet.In FIG, the lower end of connecting rod 50 and 52 has corresponding through hole or eyelet, therefore wheel shaft 100 and 102 can be inserted by relevant connecting rod 50 and 52 and corresponding tab 96 and 98, and connecting rod can be made to be pivoted to piston rod.
On crank box or crank outer housing cover, preferably provide at the both sides place of the mobile route of the free end of wheel shaft 100 and 102 and lead wall 104, wherein in figure 3, the one only led in wall is visible.At least leading in the region that wall contacts with wheel shaft, leading wall 104 and being preferably coated with low-friction material.These wheel shafts are attracted in corresponding through hole by leading wall.Because the lower end of piston rod 14 and its tab 96 and 98 are immersed in liquid sump 70, because this ensure that connecting rod is to the free end of the lubrication of the bearing of wheel shaft and axle and the sliding contact led between wall 104.But when having suitable material, this kind of lubrication is not required.
In the region of the mobile route of crank pin 54 and 56, crank box or crank case lid also can be equipped with and lead wall (not shown), free end along described wall of leading in the mode of sliding contact or move with small distance, therefore connecting rod 50 and 52 only needs to insert in crank pin 54 and 56, and keeps in check by assembling crank box.
Connecting rod with above-mentioned connection of piston rod also can be applied to multicylinder engine, such as, when such as providing crank disc at the both sides place of bearing pin 92 and 94, the one of crank disc centering and the piston rod of a piston interact and another interacts to the piston rod of crank disc and another piston thus.Piston rod 14 shown in Fig. 3 has rectangular cross-section.Piston rod can be hollow, can be formed with circular cross-section or different cross section along its length, or (such as, as shown in Figure 1) only can be formed with rectangular cross-section in its lower end.
Fig. 4 utilizes the schematic diagram of the operation of suction valve 38 and venting gas appliance 42 to schematically show further developing of machine in Fig. 1.Valve 38 and 42 is advantageously mechanically actuated is just, and valve 34 and 28 can be simple one-way valve.Only be shown schematically in visible crank disc 48 in Fig. 4 via the connection with piston rod 14 of crank pin 56 and connecting rod 52.In the embodiment shown in fig. 4, at the both sides place of the tab 98 of piston rod 14, provide connecting rod 52a and 52b, and described connecting rod is attached on tab 98 by wheel shaft 102.
The crank disc 48 with its bearing pin 94 is fixed on machine pivotly.Bearing pin 94 has extension 106, and such as, described extension produces coupling, and crank disc 94 is connected on the transmission device of vehicle by described coupling.On step between extension 106 and bearing pin 94, be connected on bearing pin 94 intermediate gear 108 spin stabilization, described bearing pin is equipped with the external tooth engaged with the external tooth of another gear 110, and another gear described is rotatably installed around the axle C that machine is fixing.Gear 110 can directly engage with the gearing be arranged on bearing pin.Gear 110 has two axially eccentric cam faces 112 and 114, and described cam face is used for the actuating of tappet 116,118, described tappet respectively by rocking bar 120,122, valve 42 and 38 operates.Breast wheel 108 guarantees that the rotational speed of gear 110 is half of the rotational speed of cam disk 48, and therefore valve 38 and 42 can operate according to four-stroke process.In two stroke procedure, intermediate gear can be omitted and cam face can directly be formed on crank disc 48.Should be understood that two crank discs 46 and 48 directly can be equipped with cam face or can interact via transmission device and cam face, wherein crank disc 46 activates one or more suction valve 38 and crank disc 48 activates one or more outlet valve 42.
The operation of above-mentioned feed cycle valve is only the one in some embodiments.Such as, tappet can not with cam face cooperation, but the pin be directly engaged in corresponding peripheral cam dish can be equipped with, can not to open relative to spring pressure to make valve or closed, but can directly activate.Replace tappet, the attachment (such as, timing belt or chain) of annular may be used for the rotation controlling crank disc, carrys out activated valve to operate known camshaft.
It is only illustrative and and nonrestrictive for more than describing.Internal-combustion engine can change in several ways, such as, 2 stroke motor can be configured to, in described motor, connecting passage 32 can be omitted and fresh air from fresh air room 24 is flowed in working room 24 by otch, and described otch is configured on the inwall of cylinder in the region of the lower dead center of piston.One or another crank disc 46 or 48 can be used as the rotor of motor, wherein with less or larger diameter, the magnet rotated in fixed stator axially can be housed near the periphery of circumference gear device.Depend on operational condition, this kind of motor (such as, as in hybrid motor) can generate electricity as generator or is used as the extra drive motor of vehicle.If (needs) can be operating as generator or motor (such as, starter) motor also can be configured, engage with the circumference gear device of crank disc to make the driving pinion of the rotor of motor, therefore the rotor of motor is driven by the crank disc with more gearwheel device, that is, with more large period driving.Should be understood that between motor and crank disc, the coupling and/or gear-box with variable gear ratio can be housed.
Such as, as shown in Figure 1, internal-combustion engine can carry out charging by the lower end of piston rod 14 extraly, the lower end of described piston rod extends and is connected on another piston, work in the compresser cylinder of single or two effect, described compresser cylinder is connected on the entrance of working room 20 by rights, and therefore this extra charging is supplied compressively.For further charging, exhaust-gas turbocharger can be adopted.Such as, crank mechanism can be modified, and to make crank disc separately for double plate, piston rod is between described double plate.
In the internal-combustion engine shown in Fig. 1, two crank discs 46 and 48 are fixed to each other rotatably by their circumference gear device.Crank disc is not necessarily fixed mutually rotatably, and can be spaced apart by the outer diameter reducing them.In this case, can guarantee that the synchronous backward of crank disc rotates by the piston rod 14 of linear guide and connecting rod 50,52, wherein piston rod 14 is advantageously linearly guided through subregion 18 movably in opening 16.
Such as, internal-combustion engine as shown in Figure 1 can supplement multi-cylinder engine by different way, and this will be described in detail with reference to figure 5 and Fig. 6 hereinafter.
The schematic plan view of multi-cylinder engine is shown according to Fig. 5, Fig. 5, and wherein two crankshafts 130,132 a certain distance apart on engine main body is rotatable.Dish 140,142 is rotatably fixed and is attached to one heart on crankshaft with each crankshaft in their longitudinal center.Each in dish 140 and 142 has exterior periphery gearing, and by described gearing, dish 140,142 connects, rotatably to make described dish in the opposite direction and to rotate with identical circumferential speed.Crankshaft 130,132 has crank 144,146, and described crank is connected on the piston rod 14 of piston 12 separately via connecting rod 50,52.Relative to single cylinder (layout in Fig. 1), the crank disc 46 and 48 wherein in Fig. 1 is replaced by the associated crank of dish 140 and 142 and crankshaft.The skew (that is, visible in the axial view as the degree in crank angle between crank) of crankshaft is intended to the mode of catering to suitable number of cylinders (being depicted as 6 Cylinder engines) and operation (such as) 2 stroke or 4 strokes.Each in rotatably fixing crankshaft 130,132 can be formed in two parts, therefore coils the two ends that 140 and 142 are connected respectively to crankshaft.
The difference of the embodiment in Fig. 6 and the embodiment in Fig. 5 is, dish 140,142 is positioned at one end place of the crankshaft 130,132 be rotatably fixedly attached on it.
Fig. 7 illustrates other interesting aspects of the double crank mechanism compared with conventional crank mechanism.The left-hand side of Fig. 7 illustrates the view with the internal-combustion engine of double crank mechanism being similar to Fig. 1.Right-hand side illustrates the similar schematic diagram with crankshaft 148 and the general internal combustion engine for the additional counter axle 150 of balance vibration excitation.Two motors illustrated have identical cubic capacity.Piston 12 shown in TDC and BDC respectively.Can see, the total height comprising the reciprocating block slider crank mechanism of the piston of the internal-combustion engine with double crank mechanism is only 50% of the corresponding total height of general internal combustion engine (described total height is illustrated as 100%).When conventional electric motor needs trunnion shaft 150, during for having the similar vibration performance of the internal-combustion engine of double crank mechanism, the width with the crank box of the internal-combustion engine of double crank mechanism reaches 70% of the width of the crank mechanism of general internal combustion engine, especially when being configured to single-cylinder engine.
As can be seen clearly from figure 7 the another aspect with the internal-combustion engine of double crank mechanism is, distance h and hole b(corresponds to piston diameter) ratio can be reduced to the value being less than 0.4, or such as 0.38.This kind of ultrashort stroke configuration realizing without piston skirt essence due to double crank mechanism internal-combustion engine, due to piston skirt and the lubrication of the necessity between piston and cylinder wall, this cannot realize when conventional engine.Ultrashort stroke configuration reduces frictional loss and improves the ride comfort with the internal-combustion engine of double crank mechanism.
Fig. 8 illustrates the perspective diagram of the crank mechanism of the associated piston with two cylinder double throw engines.
Two axles be parallel to each other 152 and 154 are installed on crank box (not shown), and are equipped with circumference gear device 156 and 158, thus are mutually rotating rotation in engagement with identical speed in the opposite direction.Crank pin 54,56 is arranged on the two ends place of each axle 54 prejudicially.As described in reference to fig. 1, crank pin 54 and 56 is connected on piston rod 14 separately, and described piston rod is rigidly attached on plate piston 10.Axle 152 and 154 can be equipped with the rotor of (such as) motor, and the stator of described motor is arranged on shell (not shown).Circumference gear device 156 and 158 can by different way for export or for driving miscellaneous part, such as, pump, camshaft etc.The illustrated double-crank driver without piston skirt for two cylinder closely and distinguishingly guarantee comfortable motor running.Such as, it is applicable in the type range extender engine of Motor Vehicle, electric vehicle, or is suitable as by the separate drive motor of the conventional fuel energy supply of motor vehicle.
Feature mentioned in more than describing need not be presented in internal-combustion engine together, but also can implement individually.Claimant retains the right performing described feature either individually or in combination.
Claims (10)
1. an internal-combustion engine, it comprises at least one cylinder (10),
Moveable reciprocating piston (12) in described cylinder, thus in described cylinder, working room (20) are formed at above described piston,
Piston rod (14), described piston rod is fixed on described piston on the side away from described working room, and be directed into movably linear and sealed by the opening being arranged in the cylinder subregion (18) below described piston, fresh feed room (29) is configured thus between described piston and described subregion, the fresh air of compression can be fed to described working room from described fresh feed room, and
Double crank mechanism, described double crank mechanism be positioned at facing away from described piston side on and there are two cranks (46,48,120,140,122,142) rotated with identical velocity reversal, and described crank is connected on described piston rod via connecting rod (50,52) hingedly, at least one wherein in crank disc is in order to the pump members of liquid (14), and described pump members is arranged in the low portion of the crank box around described double crank mechanism.
2. internal-combustion engine according to claim 1, wherein said crank (46,48,120,140,122,142) comprises the dish (46,48,140,142) being formed with circumference gear device, and the described dish in the region of lower periphery part is immersed in the pumping passage (62,64) be connected on liquid supply line (74,76,78).
3. internal-combustion engine according to claim 1 or 2, described liquid is used for internal-combustion engine described in lubrication and cooling thus.
4. an internal-combustion engine, it comprises at least one cylinder (10),
Moveable reciprocating piston (12) in described cylinder, thus in described cylinder, working room (20) are formed at above described piston,
Piston rod (14), described piston rod is fixed on described piston on the side away from described working room, and be directed into movably linear and sealed by the opening being arranged in the cylinder subregion (18) below described piston, fresh feed room (29) is configured thus between described piston and described subregion, the fresh air of compression can be fed to described working room from described fresh feed room, and
Double crank mechanism, described double crank mechanism be positioned at facing away from described piston side on and there are two cranks (46 rotated with identical velocity reversal, 48, 120, 140, 122, 142), and described crank is via connecting rod (50, 52) be connected to hingedly on described piston rod, wherein connecting rod (50, 52) chain connection and between piston rod (14) is by wheel shaft (100, 102) realize, described wheel shaft is at least given prominence to by least one hole of connecting rod and at least one hole of described piston rod, at least one in the free end of described wheel shaft is led wall (104) by contact crank box (44) and is prevented himself to discharge from described connecting rod.
5. an internal-combustion engine, it comprises at least one cylinder (10),
Moveable reciprocating piston (12) in described cylinder, thus in described cylinder, working room (20) are formed at above described piston,
Piston rod (14), described piston rod is fixed on described piston on the side away from described working room, and be directed into movably linear and sealed by the opening being arranged in the cylinder subregion (18) below described piston, fresh feed room (29) is configured thus between described piston and described subregion, the fresh air of compression can be fed to described working room from described fresh feed room, and
Double crank mechanism, described double crank mechanism be positioned at facing away from described piston side on and there are two cranks (46 rotated with identical velocity reversal, 48, 120, 140, 122, 142), and described crank is via connecting rod (50, 52) be connected to hingedly on described piston rod, wherein said crank comprises dish (46 separately, 48) and crank disc (46, 48) at least one in is equipped with cam face, described cam face controls the movement of at least one element of feed cycle valve, described feed cycle valve controls the feed cycle entering or export described working room.
6. an internal-combustion engine, it comprises at least one cylinder (10),
Moveable reciprocating piston (12) in described cylinder, thus in described cylinder, working room (20) are formed at above described piston,
Piston rod (14), described piston rod is fixed on described piston on the side away from described working room, and be directed into movably linear and sealed by the opening being arranged in the cylinder subregion (18) below described piston, fresh feed room (29) is configured thus between described piston and described subregion, the fresh air of compression can be fed to described working room from described fresh feed room, and
Double crank mechanism, described double crank mechanism be positioned at facing away from described piston side on and there are two cranks (46,48,120,140,122,142) rotated with identical velocity reversal, and described crank is connected on described piston rod hingedly via connecting rod (50,52)
Wherein said crank has dish (46,48) separately and has gear (40) to fix rotatably by least one in the described dish of intermediate gear (108), described gear is equipped with at least one cam face (112,114), described cam face controls the movement of at least one element (116,118) thus, described element controls at least one feed cycle valve (36,42), and then controls the feed cycle entering or export described working room.
7. an internal-combustion engine, it comprises at least one cylinder (10),
Moveable reciprocating piston (12) in described cylinder, thus in described cylinder, working room (20) are formed at above described piston,
Piston rod (14), described piston rod is fixed on described piston on the side away from described working room, and be directed into movably linear and sealed by the opening being arranged in the cylinder subregion (18) below described piston, fresh feed room (24) is configured thus between described piston and described subregion, the fresh air of compression can be fed to described working room from described fresh feed room, and
Double crank mechanism, described double crank mechanism be positioned at facing away from described piston side on and there are two cranks (46,48,120,140,122,142) rotated with identical velocity reversal, and described crank is connected on described piston rod (14) via connecting rod (50,52) hingedly, wherein due to the connection of the linear guide of described piston rod (14) and itself and described connecting rod (50,52), implement the contrary and crank of equal velocity (46,48,120,140,122,142) and rotate.
8. an internal-combustion engine, it comprises at least one cylinder (10),
Moveable reciprocating piston (12) in described cylinder, thus in described cylinder, working room (20) are formed at above described piston,
Piston rod (14), described piston rod is fixed on described piston on the side away from described working room, and is directed into movably linear and is sealed by the opening being arranged in the cylinder subregion (18) below described piston,
Fresh air room (24) is configured thus between described piston and described subregion, the fresh air of compression can be fed to described working room from described fresh air room, and double crank mechanism, described double crank mechanism be positioned at facing away from described piston side on and there are two cranks (46,48,120,140,122,142) rotated with identical velocity reversal, and described crank is connected on described piston rod (14) hingedly via connecting rod (50,52)
Wherein said crank is configured on crankshaft (120,122).
9. an internal-combustion engine, it comprises at least one cylinder (10),
In described cylinder between top dead center (TDC) and lower dead center (BTC) moveable reciprocating piston (12), wherein in described cylinder, working room (20) are formed at above described piston,
Piston rod (14), described piston rod is fixed on described piston on the side away from described working room, and be directed into movably linear and sealed by the opening being arranged in the cylinder subregion (18) below described piston, fresh feed room (29) is configured thus between described piston and described subregion, the fresh air of compression can be fed to described working room from described fresh feed room, and
Double crank mechanism, described double crank mechanism be positioned at facing away from described piston side on and there are two cranks (46,48,120,140,122,142) rotated with identical velocity reversal, and described crank is connected on described piston rod via connecting rod (50,52) hingedly, the ratio of the diameter of the stroke of piston wherein between TDC and BDC and described piston (12) is less than 0.8, preferably be less than 0.6, and be less than 0.4 better.
10. an internal-combustion engine comprises two cylinders (10); Corresponding piston (12), described piston is moveable in each of described cylinder, and in each cylinder, working room (20) are formed at the top of described piston thus; Piston rod (14), described piston rod is fixed on corresponding piston on the side away from described working room, described piston rod is directed into movably linear and is sealed by the opening being arranged in the cylinder subregion (18) below described piston, between described piston and described subregion, configure fresh air room (24) thus, the fresh air of compression can be delivered to described working room from the supply of described fresh air room; And double crank mechanism, described double crank mechanism is positioned on the side away from the subregion of described piston, and comprise two axles rotated with identical velocity reversal (152,154), on the side that the diameter of described axle is relative, there is provided eccentric crank pin (54,56), described crank pin is pivotally connected on corresponding piston rod (14) by means of connecting rod (52,52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410057087.6A CN104863707A (en) | 2014-02-20 | 2014-02-20 | Internal combustion engine with double-crank mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410057087.6A CN104863707A (en) | 2014-02-20 | 2014-02-20 | Internal combustion engine with double-crank mechanism |
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| CN104863707A true CN104863707A (en) | 2015-08-26 |
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| CN201410057087.6A Pending CN104863707A (en) | 2014-02-20 | 2014-02-20 | Internal combustion engine with double-crank mechanism |
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|---|---|
| CN (1) | CN104863707A (en) |
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| WO2017215665A1 (en) * | 2016-06-16 | 2017-12-21 | 徐州弦波引擎机械科技有限公司 | Double crankshaft engine |
| CN109899155A (en) * | 2019-03-13 | 2019-06-18 | 浙江大学 | Free wheels group engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017215665A1 (en) * | 2016-06-16 | 2017-12-21 | 徐州弦波引擎机械科技有限公司 | Double crankshaft engine |
| US10502129B2 (en) | 2016-06-16 | 2019-12-10 | Xuzhou Xian Bo Engine Machinery Technology Co., Ltd. | Double-crankshaft engine |
| CN109899155A (en) * | 2019-03-13 | 2019-06-18 | 浙江大学 | Free wheels group engine |
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