CN105275532B - A kind of multimode free-piston internal combustion engine generator force feed system - Google Patents
A kind of multimode free-piston internal combustion engine generator force feed system Download PDFInfo
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- CN105275532B CN105275532B CN201510711260.4A CN201510711260A CN105275532B CN 105275532 B CN105275532 B CN 105275532B CN 201510711260 A CN201510711260 A CN 201510711260A CN 105275532 B CN105275532 B CN 105275532B
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Abstract
The present invention relates to a kind of multimode free-piston internal combustion engine generator force feed system, belong to field of energy source power.Machine oil in sump is pumped out by lubricating oil pump, it is divided into two branch roads after the filtration of oil filter, into in the first fuel feed hole of both sides scavenging air box, the lubricating oil for flowing into the first fuel feed hole is delivered in each point of oil duct through the oil circuit in scavenging air box, and through dividing the gap between the lubricant reservoir inside each scavenging air box of oil duct arrival, lubricant reservoir and connecting rod mover；And then enter in the oil duct in piston rod part；Piston cylinder liner friction pair is flowed into by the oil-out of oil duct again, realizes the continuous lubrication to this friction surface；The system reliable operation and strong adaptability；Lubricating oil pump uses electrodynamic type, is easy to carry out accurate Electronic Control according to Different Work Condition of Engine；Lubricant reservoir is arranged in free-piston generator inside modules, compact-sized, saving space, it is easy to accomplish higher summation watt rating with oil leab.
Description
Technical field
The present invention relates to a kind of multimode free-piston internal combustion engine generator force feed system, belong to field of energy source power.
Background technology
One kind that free-piston internal combustion engine generator is free-piston explosive motor and linear electric generator coupling is formed afterwards
Novel energy conversion equipment, take turns doing work(by two side combusion chambers and promote motor among the cutting of piston rod linear reciprocating motion
Magnetic induction line is generated electricity, and does not have toggle in structure, has that simple in construction, power density is high and discharge is low excellent
Point.
In free-piston internal combustion engine generator, the friction surface between piston ring and cylinder sleeve carries out high speed relative motion, shape
Unique frictional dissipation source into whole dynamical system, this not only adds the power consumption inside free-piston engine, goes back
Part time job surface can be made to wear rapidly, while heat caused by friction may also result in the ablation on working part surface, cause
Engine can not run well.Therefore it is the normal work of guarantee engine, it is necessary to which friction pair is covered to the piston-cylinder of engine
It is lubricated, to reduce frictional resistance, while takes away partial heat caused by friction.On conventional crankshafts formula internal combustion engine, piston
The mode of generally use splash lubrication between the friction surface of cylinder jacket.However, free-piston internal combustion engine generator is without song
Axle box, it is impossible to machine oil is stored with oil sump, while also without the bent axle of rotation, therefore splash lubrication pattern can not be used.For reality
The now force feed to friction surface between cylinder sleeve and piston in piston rod part, it is necessary to open up oil duct, and the height of component
Speed moves back and forth, and makes the arrangement of oil duct and ensures that the continuous oil supply of friction surface turns into difficult point.
A kind of internal combustion engine using " plunger type " lubricating system is described in document CN1163343A.In the piston of internal combustion engine
If the oil duct being connected with medial surface of cylinder, end is set in piston rod the lubricating oil oil input channel of in line check valve, and and oil input channel
The back oil road of centerline parallel, piston-rod lower end set spring bearing board, are placed in being enclosed in the lubricating oil pumping chamber in spring housing.This is
Grease pump in lubricating oil pumping chamber is lubricated by system by the reciprocating motion of piston to medial surface of cylinder, and passes through medial surface of cylinder
The spill port of setting carries out oil return.However, the reciprocating motion of piston need to be by spring in the internal combustion engine that this lubricating system is applied
Mechanical constraint, this causes the operation logic of this internal combustion engine and free-piston internal combustion engine generator to produce difference, also results in both and ties
Difference on structure, therefore lubricating system designed in document is not fully applied to free-piston internal combustion engine generator.
The content of the invention
The invention aims to solve the problems, such as existing free-piston internal combustion engine generator lubrication, there is provided a kind of multimode
Free-piston internal combustion engine generator force feed system.
The purpose of the present invention is achieved through the following technical solutions.
A kind of multimode free-piston internal combustion engine generator force feed system, mainly including multiple free-piston generator moulds
Block, sump, electronic oil pump, oil filter, oil pipe and sealing ring；
Free-piston generator module mainly includes：Cylinder, piston, connecting rod, cylinder jacket, scavenging air box, linear motor stator electric
Coil and electric mover.
Multiple scavenging air boxs are fixedly connected, and the lubricant reservoir in scavenging air box is by dividing oil duct to connect, or by each scavenging
External oil pipe independent mutually is set to be connected at the fuel feed hole of case first；Scavenging air box is close to the side bottom of linear motor stator electric coil
Portion is provided with the first fuel feed hole；Oil circuit is opened up in scavenging box body, oil circuit is by the first fuel feed hole with dividing oil duct to connect；Lubricant reservoir is
Hollow cylinder, connecting rod and electric mover move back and forth in lubricant reservoir；Lubricant reservoir is with scavenging air box close to linear electric motors
The side of stator coil is fixedly connected, and junction sets sealing ring, and sealing ring will be attached to the profit on connecting rod and electric mover surface
Lubricating oil is wiped off, is entered to prevent the lubricating oil in oil pocket in coil of stator of motor；The end bottom that scavenging air box is connected with cylinder is set
There is boss, the first spill port is provided with boss；Lubricant reservoir length is slightly larger than a length of piston travel；
End set of the cylinder jacket close to scavenging air box one end has annular oil trap, and oil trap least significant end is provided with the second oil return
Hole, the second spill port are relative with the first spill port of scavenging air box correspondence position；
Connecting rod is connected with piston and forms piston movement component, oil duct is cast with component, connecting rod is connected side with electric mover
Circumference be provided with the second fuel feed hole, the length of lubricant reservoir, which is set, can ensure that fuel feed hole is constantly in lubricant reservoir；
Installed on piston and be circumferentially provided with oil outlet at the annular groove of oil ring, oil outlet lubricating oil is accurately transported to piston-
On cylinder jacket friction pair；
Electric mover is connected with connecting rod, both uiform sections, to reduce damping action of the lubricating oil to moving parts；
Cylinder head, cylinder and the scavenging air box of multimode free-piston internal combustion engine generator homonymy carry out Integration Design respectively；
Each cylinder inside whole cylinder block is separated by certain wall thickness, and places single cylinder jacket in each cylinder respectively；Each cylinder
Side be engaged by common mounting surface with the cylinder head of monoblock type, opposite side then passes through common mounting surface and scavenging air box
Carry out bolt connection；The inside of whole scavenging air box is divided into the chamber with the quantity such as cylinder, each chamber respectively with corresponding cylinder
Coaxial placement；Each chamber interior center of scavenging air box is provided with lubricant reservoir；Scavenging air box is close to linear motor stator electric coil
Lubricant passage way is cast with the mounting surface of side.
The course of work：Machine oil in sump is pumped out by lubricating oil pump, and two are divided into after the filtration of oil filter
Branch road, respectively enter in the first common fuel feed hole of the multiple scavenging air boxs in both sides；The lubricating oil of the first fuel feed hole is flowed into through scavenging air box
Interior oil circuit is delivered in each point of oil duct, and through dividing oil duct to reach the lubricant reservoir inside each scavenging air box；Connecting rod and piston
Be connected, when piston carries out bilateral reciprocation in the cylinder, connecting rod it is close be connected with mover that one end opened up second enter
Oilhole will be in lubricant reservoir all the time, so that lubricating oil is continuously flowed into piston rod part through the second fuel feed hole
In oil duct；The oil outlet of oil duct is opened in oil piston ring annular groove, and the lubricating oil in oil duct is finally transported to work through oil outlet
Plug-cylinder jacket friction pair, realizes the continuous lubrication to this friction surface；The lubricating oil part for reaching cylinder jacket wall participates in
Burning in combustion chamber is consumed, and another part is then collected into the oil-collecting of cylinder jacket end by the knife-type oil stripping action of piston ring
In groove, the second spill port is provided with the lowest part of oil trap, it is communicated with the first spill port of scavenging box structure, and lubricating oil passes through back
Oilhole enters in the oil pipe being connected with the first spill port of scavenging air box lower end, is finally delivered back into sump, so as to realize profit
Lubricating oil circulates；When the lubrication system is operating, connecting rod and mover motion have parts of lubricating oil by oil pocket and are attached to two
Person surface, certain cooling effect is served to connecting rod and mover, so as to cut off the heat transfer between internal combustion engine and linear electric motors
Passage；The sealing ring set at the mounting hole of scavenging air box and mover can wipe the lubricating oil of mover surface attachment off, so as to keep away
Exempt from the inside that excessive lubricating oil enters linear motor stator electric coil.
Beneficial effect
1st, a kind of multimode free-piston internal combustion engine generator force feed system of the invention, by piston rod part
Middle setting oil duct, and the length realization of lubricant reservoir is rationally designed to living in each free-piston generator module in scavenging air box
The continuous lubrication of plug-cylinder jacket friction pair, this novel power device is avoided because of the friction consequence such as cause parts depreciation serious.
2nd, a kind of multimode free-piston internal combustion engine generator force feed system of the invention, using the shape of force feed
Formula, do not have coupled relation, reliable operation and strong adaptability with the motion process of free-piston generator；Lubricating oil pump is using electronic
Formula, it is easy to carry out accurate Electronic Control according to Different Work Condition of Engine；Lubricant reservoir is arranged in free-piston with oil leab
Inside generator module, compact-sized, saving space, it is easy to accomplish higher summation watt rating.
Brief description of the drawings
Fig. 1 free-piston internal combustion engine generator force feed overall system architecture profiles；
Fig. 2 is model schematic of the scavenging air box close to cylinder side of Integration Design；
Fig. 3 is model schematic of the scavenging air box close to linear motor stator electric coil side of Integration Design；
Fig. 4 is the three-dimensional model diagram of cylinder jacket；
Fig. 5 is the three-dimensional model diagram of connecting rod；
Fig. 6 is the three-dimensional model diagram of piston；
Fig. 7 Dual module free-piston internal combustion engine generator three-dimensional model diagrams.
Wherein, 1-cylinder, 2-piston, 3-connecting rod, 4-cylinder jacket, 5-scavenging air box, 6-lubricant reservoir, 7-sealing
Ring, 8-linear motor stator electric coil, 9-electric mover, 10-sump, 11-electronic oil pump, 12-oil filter,
13-oil pipe, 14-oil duct, the 15-the first spill port, the 16-the first fuel feed hole, 17-oil trap, the 18-the second spill port,
19-the second fuel feed hole, 20-oil outlet, 21-oil transportation road, 22-divide oil duct, 23-cylinder head.
Embodiment
The application is described further with embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of Dual module free-piston internal combustion engine generator force feed system, as shown in figure 1, mainly freely being lived including first
Fill in generator module, the second free-piston generator module, sump 10, electronic oil pump 11, oil filter 12, oil pipe 13
With sealing ring 7.
First free-piston generator module mainly includes：Cylinder 1, piston 2, connecting rod 3, cylinder jacket 4, scavenging air box 5, straight line
Coil of stator of motor 8 and electric mover 9.
Second free-piston generator modular structure is identical with the first free-piston generator modular structure.
As shown in Figure 2 and Figure 3, two scavenging air boxs 5 of homonymy are fixedly connected, and the lubricant reservoir 6 in scavenging air box 5 is by dividing oil duct
22 connections；Scavenging air box 5 is provided with the first fuel feed hole 16 close to a side bottom of linear motor stator electric coil 8；Opened in the casing of scavenging air box 5
If oil circuit, oil circuit is by the first fuel feed hole 16 with dividing oil duct 22 to connect；Lubricant reservoir 6 is hollow cylinder, connecting rod 3 and motor
Son 9 moves back and forth in lubricant reservoir 6；Lubricant reservoir 6 is fixed with scavenging air box 5 close to the side of linear motor stator electric coil 8 to be connected
Connect, junction sets sealing ring 7, and sealing ring 7 will be attached to connecting rod and the lubricating oil on electric mover surface is wiped off, to prevent in oil pocket
Lubricating oil enter coil of stator of motor in；Scavenging air box 5 is provided with boss with the end bottom that cylinder 1 is connected, and is provided with boss
First spill port 15；The length of lubricant reservoir 6 is slightly larger than a length of piston travel；
As shown in figure 4, end set of the cylinder jacket 4 close to the one end of scavenging air box 5 has an annular oil trap 17, oil trap 17 is minimum
End is provided with the second spill port 18, and the second spill port 18 is relative with the first spill port 15 of scavenging air box correspondence position；
Connecting rod 3 is connected with piston 2 and forms piston movement component, and oil duct 14 is cast with component, as shown in figure 5, connecting rod 3 and electricity
The circumference of motor-driven sub 9 connection side is provided with the second fuel feed hole 19, and the length of lubricant reservoir 6, which is set, can ensure that fuel feed hole 19 is located always
In in lubricant reservoir 6；
Oil outlet 20 is circumferentially provided with the annular groove of oil ring, oil outlet 20 is by lubricating oil as shown in fig. 6, installing on the piston 2
It is accurate to be transported on piston-cylinder set friction pair；
Electric mover 9 is connected with connecting rod 3, both uiform sections, to reduce damping action of the lubricating oil to moving parts；
As shown in fig. 7, cylinder head 23, cylinder 1 and the scavenging air box 5 of Dual module free-piston internal combustion engine generator homonymy enter respectively
Row Integration Design；Two cylinders 1 inside whole cylinder block are separated by certain wall thickness, and are placed respectively in two cylinders 1 single
Only cylinder jacket 4；The side of two cylinders 1 is engaged by common mounting surface with the cylinder head of monoblock type, and opposite side then passes through
Common mounting surface carries out bolt connection with scavenging air box；The inside of whole scavenging air box 5 is also partitioned into two chambers, each chamber point
Not with two coaxial placements of cylinder 1；5 liang of chamber interior centers of scavenging air box are provided with lubricant reservoir 6；Scavenging air box 5 is close
Lubricant passage way is cast with the mounting surface of the side of linear motor stator electric coil 8.
The course of work：Machine oil in sump 10 is pumped out by lubricating oil pump 11, is divided after the filtration of oil filter 12
Into two branch roads, respectively enter in the first common fuel feed hole 16 of both sides scavenging air box 5；Flow into the lubricating oil warp of the first fuel feed hole 16
Oil circuit in scavenging air box 5 is delivered in two points of oil ducts 22, and through being divided to oil duct 22 to reach two lubricant reservoirs 6 in the inside of scavenging air box 5；
Connecting rod 3 is connected with piston 2, and when piston 2 carries out bilateral reciprocation in cylinder 1, connecting rod 3 is connected one close with mover 9
The second opened up fuel feed hole 19 of end will be in lubricant reservoir 6 all the time, so that lubricating oil is continuously through the second fuel feed hole
19 flow into the oil duct 14 in piston rod part；The oil outlet 20 of oil duct 14 is opened in oil piston ring annular groove, in oil duct 14
Lubricating oil through oil outlet 20 be finally transported to piston-cylinder set friction pair, realize the continuous lubrication to this friction surface；
The burning reached in the lubricating oil part participation combustion chamber of the wall of cylinder jacket 4 is consumed, and another part then passes through piston ring
Knife-type oil stripping action be collected into the oil trap 17 of cylinder jacket end, be provided with the second spill port 18 in the lowest part of oil trap, its
Communicated with the first spill port 15 of scavenging box structure, lubricating oil enters through spill port and is connected with the lower end of the first spill port of scavenging air box 15
Oil pipe 13 in, be finally delivered back into sump 10, so as to realize circulating for lubricating oil；Work as lubrication system works
When, connecting rod 3 and the motion of mover 9 have parts of lubricating oil by oil pocket and are attached to surface both, and connecting rod 3 and mover 9 are served
Certain cooling effect, so as to cut off the heat transfer path between internal combustion engine and linear electric motors；The installation of scavenging air box 5 and mover 9
The sealing ring 7 set at hole can wipe the lubricating oil of the surface attachment of mover 9 off, so as to avoid excessive lubricating oil from entering straight line
The inside of coil of stator of motor 8.
Embodiment 2
A kind of multimode free-piston internal combustion engine generator force feed system, as shown in figure 1, mainly freely being lived including multiple
Fill in generator module, sump 10, electronic oil pump 11, oil filter 12, oil pipe 13 and sealing ring 7；
Free-piston generator module mainly includes：Cylinder 1, piston 2, connecting rod 3, cylinder jacket 4, scavenging air box 5, linear electric motors
Stator coil 8 and electric mover 9.
As shown in Figure 2 and Figure 3, multiple scavenging air boxs 5 are fixedly connected, and the lubricant reservoir 6 in scavenging air box 5 is by dividing oil duct 22 to connect
It is logical, or by setting external oil pipe independent to be mutually connected at each the first fuel feed hole of scavenging air box 16；Scavenging air box 5 is close to straight
One side bottom of line coil of stator of motor 8 is provided with the first fuel feed hole 16；Oil circuit is opened up in the casing of scavenging air box 5, oil circuit enters first
Oilhole 16 is with dividing oil duct 22 to connect；Lubricant reservoir 6 is hollow cylinder, and connecting rod 3 and electric mover 9 are past in lubricant reservoir 6
Multiple motion；Lubricant reservoir 6 is fixedly connected with scavenging air box 5 close to the side of linear motor stator electric coil 8, and junction sets sealing ring
7, sealing ring 7 will be attached to connecting rod and the lubricating oil on electric mover surface is wiped off, determine to prevent the lubricating oil in oil pocket into motor
In subcoil；Scavenging air box 5 is provided with boss with the end bottom that cylinder 1 is connected, and the first spill port 15 is provided with boss；Lubricating oil
The length of chamber 6 is slightly larger than a length of piston travel；
As shown in figure 4, end set of the cylinder jacket 4 close to the one end of scavenging air box 5 has an annular oil trap 17, oil trap 17 is minimum
End is provided with the second spill port 18, and the second spill port 18 is relative with the first spill port 15 of scavenging air box correspondence position；
Connecting rod 3 is connected with piston 2 and forms piston movement component, and oil duct 14 is cast with component, as shown in figure 5, connecting rod 3 and electricity
The circumference of motor-driven sub 9 connection side is provided with the second fuel feed hole 19, and the length of lubricant reservoir 6, which is set, can ensure that fuel feed hole 19 is located always
In in lubricant reservoir 6；
Oil outlet 20 is circumferentially provided with the annular groove of oil ring, oil outlet 20 is by lubricating oil as shown in fig. 6, installing on the piston 2
It is accurate to be transported on piston-cylinder set friction pair；
Electric mover 9 is connected with connecting rod 3, both uiform sections, to reduce damping action of the lubricating oil to moving parts；
As shown in fig. 7, cylinder head 23, cylinder 1 and the scavenging air box 5 of multimode free-piston internal combustion engine generator homonymy enter respectively
Row Integration Design；Each cylinder 1 inside whole cylinder block is separated by certain wall thickness, and is placed respectively in each cylinder 1 independent
Cylinder jacket 4；The side of each cylinder 1 is engaged by common mounting surface with the cylinder head of monoblock type, and opposite side is then by altogether
Same mounting surface carries out bolt connection with scavenging air box；The inside of whole scavenging air box 5 is divided into the chamber with the quantity such as cylinder 1,
Each chamber respectively with the corresponding coaxial placement of cylinder 1；Each chamber interior center of scavenging air box 5 is provided with lubricant reservoir 6；Scavenging air box
5 are cast with lubricant passage way in the mounting surface close to the side of linear motor stator electric coil 8.
The course of work：Machine oil in sump 10 is pumped out by lubricating oil pump 11, is divided after the filtration of oil filter 12
Into two branch roads, respectively enter in the first common fuel feed hole 16 of the multiple scavenging air boxs 5 in both sides；Flow into the lubrication of the first fuel feed hole 16
Oil is delivered in each point of oil duct 22 through the oil circuit in scavenging air box 5, and through dividing oil duct 22 to reach the lubrication inside each scavenging air box 5
Oil pocket 6；Connecting rod 3 and piston 2 are connected, and when piston 2 carries out bilateral reciprocation in cylinder 1, connecting rod 3 is close with mover 9
The second fuel feed hole 19 that connection one end is opened up will be in lubricant reservoir 6 all the time, so that lubricating oil is continuously through second
Fuel feed hole 19 is flowed into the oil duct 14 in piston rod part；The oil outlet 20 of oil duct 14 is opened in oil piston ring annular groove, oil
Lubricating oil in road 14 is finally transported to piston-cylinder set friction pair through oil outlet 20, realizes the company to this friction surface
Continuous lubrication；The burning reached in the lubricating oil part participation combustion chamber of the wall of cylinder jacket 4 is consumed, and another part then passes through
The knife-type oil stripping action of piston ring is collected into the oil trap 17 of cylinder jacket end, and the second spill port is provided with the lowest part of oil trap
18, it is communicated with the first spill port 15 of scavenging box structure, lubricating oil through spill port enter with the first spill port of scavenging air box 15
In the connected oil pipe 13 in end, finally it is delivered back into sump 10, so as to realize circulating for lubricating oil；Work as lubricating system
During work, connecting rod 3 and the motion of mover 9 have parts of lubricating oil by oil pocket and are attached to surface both, and connecting rod 3 and mover 9 are risen
Certain cooling effect is arrived, so as to cut off the heat transfer path between internal combustion engine and linear electric motors；Scavenging air box 5 and mover 9
The sealing ring 7 set at mounting hole can wipe the lubricating oil of the surface attachment of mover 9 off, so as to avoid excessive lubricating oil from entering
The inside of linear motor stator electric coil 8.
Claims (3)
- A kind of 1. multimode free-piston internal combustion engine generator force feed system, mainly including multiple free-piston generator moulds Block；It is characterized in that：Also include sump (10), electronic oil pump (11), oil filter (12), oil pipe (13) and sealing ring (7)；Free-piston generator module mainly includes：It is cylinder (1), piston (2), connecting rod (3), cylinder jacket (4), scavenging air box (5), straight Line coil of stator of motor (8) and electric mover (9)；Multiple scavenging air boxs (5) are fixedly connected, and the lubricant reservoir (6) in scavenging air box (5) or is passed through by dividing oil duct (22) to connect External oil pipe independent mutually is set to be connected at each fuel feed hole of scavenging air box first (16) place；Scavenging air box (5) is close to linear electric motors One side bottom of stator coil (8) is provided with the first fuel feed hole (16)；Oil circuit is opened up in scavenging air box (5) casing, oil circuit enters first Oilhole (16) is with dividing oil duct (22) to connect；Lubricant reservoir (6) is hollow cylinder, connecting rod（ 3）Moistening with electric mover (9) Moved back and forth in lubricating cavity (6)；Lubricant reservoir (6) is fixed with scavenging air box (5) close to the side of linear motor stator electric coil (8) to be connected Connect, junction sets sealing ring (7), and sealing ring (7) will be attached to connecting rod and the lubricating oil on electric mover surface is wiped off, with grease proofing Lubricating oil in chamber enters in coil of stator of motor；The end bottom that scavenging air box (5) is connected with cylinder (1) is provided with boss, convex The first spill port (15) is provided with platform；Lubricant reservoir (6) length is more than a length of piston travel；End set of the cylinder jacket (4) close to scavenging air box (5) one end has annular oil trap (17), and oil trap (17) least significant end is provided with Second spill port (18), the second spill port (18) are relative with the first spill port (15) of scavenging air box correspondence position；Connecting rod（ 3）With piston（ 2）It is connected and forms piston movement component, oil duct (14), connecting rod (3) and motor is cast with component The circumference of mover (9) connection side is provided with the second fuel feed hole (19), and the length of lubricant reservoir (6), which is set, can ensure fuel feed hole (19) It is constantly in lubricant reservoir (6)；Installed on piston (2) and be circumferentially provided with oil outlet (20) at the annular groove of oil ring, oil outlet (20) accurately conveys lubricating oil Onto piston-cylinder set friction pair；Electric mover (9) is connected with connecting rod (3), both uiform sections, to reduce damping action of the lubricating oil to moving parts；Cylinder head (23), cylinder (1) and the scavenging air box (5) of multimode free-piston internal combustion engine generator homonymy carry out integrated respectively Design；Each cylinder (1) inside whole cylinder block is separated by certain wall thickness, and places single gas respectively in each cylinder (1) Cylinder sleeve (4)；The side of each cylinder (1) is engaged by common mounting surface with the cylinder head (23) of monoblock type, and opposite side then leads to Cross common mounting surface and carry out bolt connection with scavenging air box (5)；The inside of whole scavenging air box (5) is divided into cylinder (1) etc. The chamber of quantity, each chamber respectively with corresponding cylinder (1) coaxial placement；Each chamber interior center of scavenging air box (5) is provided with Lubricant reservoir (6)；Scavenging air box (5) is cast with lubricant passage way in the mounting surface close to linear motor stator electric coil (8) side.
- A kind of 2. multimode free-piston internal combustion engine generator force feed system as claimed in claim 1, it is characterised in that：Also Including oil filter (12), one end of oil filter (12) is connected with lubricating oil pump (11), and the other end passes through pipeline and first Fuel feed hole (16) connects.
- A kind of 3. force feed system of multimode free-piston internal combustion engine generator, it is characterised in that：The course of work：Sump (10) machine oil in is pumped out by lubricating oil pump (11), and two branch roads are divided into after the filtration of oil filter (12), are entered respectively Enter in common the first fuel feed hole (16) of the multiple scavenging air boxs in both sides (5)；The lubricating oil of the first fuel feed hole (16) is flowed into through scavenging air box (5) oil circuit in is delivered in each point of oil duct (22), and through dividing oil duct (22) to reach the internal lubricating oil of each scavenging air box (5) Chamber (6)；Connecting rod (3) and piston (2) are connected, when piston (2) carries out bilateral reciprocation in cylinder (1), connecting rod (3) by Closely it is connected the second fuel feed hole (19) that one end is opened up with mover (9) to be in lubricant reservoir (6) all the time, so that lubricating oil connects It is continuous constantly to be flowed into through the second fuel feed hole (19) in the oil duct (14) in piston rod part；The oil outlet (20) of oil duct (14) is opened It is located in oil piston ring annular groove, the lubricating oil in oil duct (14) is finally transported to piston-cylinder set friction through oil outlet (20) Pair, realize the continuous lubrication to this friction surface；The lubricating oil part for reaching cylinder jacket (4) wall is participated in combustion chamber Burning is consumed, and another part is then collected into the oil trap (17) of cylinder jacket end by the knife-type oil stripping action of piston ring, The second spill port (18) is provided with the lowest part of oil trap, it is communicated with the first spill port (15) of scavenging box structure, lubricating oil Enter through spill port in the oil pipe (13) being connected with the spill port of scavenging air box first (15) lower end, be finally delivered back into sump (10) in, so as to realize circulating for lubricating oil；When the lubrication system is operating, connecting rod (3) and mover (9) motion pass through oil pocket Have parts of lubricating oil and be attached to surface both, certain cooling effect is served to connecting rod (3) and mover (9), so as to cut off Heat transfer path between internal combustion engine and linear electric motors；Scavenging air box (5) and the sealing ring set at the mounting hole of mover (9) (7) lubricating oil of mover (9) surface attachment can be wiped off, so as to avoid excessive lubricating oil from entering linear motor stator electric coil (8) inside.
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| CN106194315A (en) * | 2016-08-19 | 2016-12-07 | 新奥（中国）燃气投资有限公司 | A kind of internal combustion engine and internal combustion engine generator |
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| US2865349A (en) * | 1957-06-07 | 1958-12-23 | John G Macdonald | Lubricating and synchronizing means for free piston engines |
| DE10108007A1 (en) * | 2001-02-20 | 2002-08-22 | Man B & W Diesel As Kopenhagen | Reciprocating engine used as a reciprocating internal combustion engine comprises a lubricant pump having a plunger operated by the pressure in a liquid column interacting with a hydraulic piston |
| CN104136715A (en) * | 2011-12-29 | 2014-11-05 | 埃塔热发电机股份有限公司 | Methods and systems for managing a clearance gap in a piston engine |
| CN103470331A (en) * | 2012-06-05 | 2013-12-25 | 瓦锡兰瑞士公司 | Piston cylinder device for internal combustion engine and large-scale engine |
| CN103628945A (en) * | 2013-11-04 | 2014-03-12 | 北京理工大学 | Differential pressure type lubricating device for free piston type internal combustion engine generator |
| CN103628948A (en) * | 2013-12-23 | 2014-03-12 | 北京理工大学 | Jet lubrication device for free piston type internal combustion engine generator |
| CN106194315A (en) * | 2016-08-19 | 2016-12-07 | 新奥（中国）燃气投资有限公司 | A kind of internal combustion engine and internal combustion engine generator |
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| CN105275532A (en) | 2016-01-27 |
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