CN106894890B - A kind of centering block cooperation inner cavity cam follower internal combustion engine dynamical system - Google Patents
A kind of centering block cooperation inner cavity cam follower internal combustion engine dynamical system Download PDFInfo
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Classifications
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- 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
- F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
-
- 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
- F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
- F02B53/02—Methods of operating
-
- 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
- F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
- F02B53/04—Charge admission or combustion-gas discharge
- F02B53/06—Valve control therefor
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- 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
- F02B55/00—Internal-combustion aspects of rotary pistons; Outer members for co-operation with rotary pistons
- F02B55/02—Pistons
-
- 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
- F02B55/00—Internal-combustion aspects of rotary pistons; Outer members for co-operation with rotary pistons
- F02B55/08—Outer members for co-operation with rotary pistons; Casings
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- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
A kind of centering block cooperation inner cavity cam follower internal combustion engine dynamical system of the present invention belongs to internal combustion engine field, is related to a kind of centering block cooperation inner cavity cam follower internal combustion engine dynamical system.In dynamical system, cam mechanism is constituted with the multiple oscillating followers being mounted on intracavitary central component using inner cavity cam follower, and multiple circumferentially distributed seal operation chambers are constituted with end member, volume variation occurs with the relative rotation between inner cavity cam follower and central component for they, cooperate valve in the air inlet, compression, acting, four processes of exhaust of wherein completing Otto cycle, the chemical energy that gas burning generates is directly translated into the mechanical energy of inner cavity cam follower and central component with respect to dead axle rotary form.High pressure gas of the present invention pushes directly on the revolution of rotor dead axle and output power, and structure is simple, and Parameter adjustable adjusting range is big.Flexible control is easily realized under the dress control of additional centering block escapement, and compared to triangle rotator internal combustion engine dynamical system, there are many advantages outstanding.
Description
Technical field
The invention belongs to internal combustion engine fields, are related to a kind of centering block cooperation inner cavity cam follower internal combustion engine dynamical system
System.
Background technique
Piston IC engine is the internal combustion engine to come out earliest.Its main feature is that piston does reciprocating linear motion in cylinder, pass through
Slider-crank mechanism realizes crank up movement output.Primary complete air inlet, pressure are completed in two weeks inside cylinders of crank up
Contracting, acting, four courses of work of exhaust, i.e. Otto cycle.It is conventionally believed that internal-combustion piston engine has, the thermal efficiency is high, ties
The advantages that structure is compact, mobility strong, operation and maintenance are easy, it is even contemplated that the power device of piston IC engine, especially mechanical knot
Structure has reached the degree to reach the peak of perfection.However, the acting process of piston IC engine output power only account for therein four/
One, thus motor fluctuation is big, it is necessary to maintain the course of work continuous by flywheel, especially its thermal efficiency only has 40% or so.It is living
Structure of Internal-Combustion Engine is filled in, it is in the form of a single, lack changeability, power is only improved by increased in size or more set system parallel connections；Moreover,
It is limited by slider-crank mechanism characteristic, the chemical energy that expansion stroke generates is difficult to efficiently use: as fuel explosive force is most powerful
Period exactly corresponds to crank and is in dead center, and explosive force, can not because the arm of force is close to zero mainly based on in-fighting at this time
Generate maximum drive torque；Maximum arm of force length and piston stroke depend on fixed crank length, correspond at maximum arm of force, combustion
The explosive force of material has declined very much, and the composition of piston internal combustion mechanism of ocean congenitally determines that it can not fully convert fuel
Chemical energy.This is also the basic reason that piston internal combustion engine efficiency is difficult to improve.
Triangle rotator internal combustion engine (also known as triangular piston rotary engine) is in the rotor of currently the only successful commercialization
Combustion engine.Triangle rotator internal combustion engine has one or more curved line trangle rotors with isometrical characteristic, has similar ellipse specific
Make cylinder in the rotor storehouse of inner cavity profile；There are three faces and casing wall can just form three separate spaces, i.e. combustion chamber for rotor.It is logical
Crankshaft and gear engagement are crossed, rotor is made to make forced planetary motion in cylinder, when rotor motion, regularly exposes intake and exhaust
Hole, being not necessary to be equipped with three combustion chambers of special valve as piston IC engine respectively can successively complete Otto cycle.Rotor
Instead of the effect of piston, rotary motion output is converted the pressure to.Rotor continuous rotation in one direction, rather than tempestuously
Change nyctitropic linear reciprocating motion.From circling, engine ignition does work three times three-apexed rotor.Triangle rotator internal combustion engine is preferable
Ground solves the problems, such as end face seal and radial seal, simplifies structure, small in size, light weight, and operation is quiet, and noise is small, has equal
Even torque characteristics.But there are still core members processing request is excessively high, to wearing, too sensitive, compression ratio adjustment is difficult, the thermal efficiency
Low critical issue, combustion utilization efficiency is still difficult to be improved.Meanwhile be similar to piston IC engine, triangle rotator internal combustion engine structure can
Expansion is also limited.In addition in the power for being converted into output shaft, the transmitting of power exists natural the expansive force that fuel generates
Defect.Although expansive force energy drive rotor rotation, it acts on resultant force and is difficult to improve to the torque of armature spindle, same interior loss-rate
Example is excessively high.
There are many existing fuel used type of internal combustion engine, such as gasoline, diesel oil, kerosene, natural gas, oil gas, coal gas, hydrogen
Deng.In internal combustion engine working process there are two types of the fuel supply modes of dynamical system: one is fuel gasification or atomizations and oxidation
Enter combustion chamber after agent (usually air) mixing together, another kind is that combustion is individually filled by filling apparatus, not with oxidant
It is synchronous to enter combustion chamber.Ignited fuel mode also there are two types of: first is that being ignited using igniters such as spark plugs, another is to pass through pressure
Spontaneous combustion, such as diesel oil after contracting heating.
Summary of the invention
It is carried out by the inspiration that cam mechanism is applied in pump and motor configuration, then for internal combustion engine Otto cycle particular/special requirement
Transformation proposes in a kind of rotor based on compound cam mechanism after the key technology orderly converted of Four processes of breakthrough
Combustion engine power device principle of compositionality.
Basic Design thinking is: cam dead axle being mounted on to the inside of cylinder, is far stopped using cam and area and is closely stopped
Area forms the annular gap changed to diameter difference, then the annular gap is circumferentially separated into multiple sealings with one group of driven member
Chamber, and the gas working condition of each chamber is controlled with valve, as long as realizing reasonable radial seal and end face seal, it will be able to
It realizes and utilizes the piston-engined identical course of work.Moreover rotary polygonal piston engine has been radial seal and end face seal
Provide good precedent.
According to the flexibility of Cam Design, the forms of motion of cam follower include translating follower, swing it is driven
Part and direct acting swing compound several forms of plane motion driven member.The working end of driven member can divide pinnacle again, dome, put down
The forms such as top and roller.Cam itself may also differentiate between as appearance face cam and inner cavity cam, disc cam, columnar cam, spherical surface
Cam etc., and the chamfered shape of cam, lift and backhaul changing rule, it is far and near stop whether there is or not and quantity etc. difference,
It can produce different design results.Although these factors all can be used identical principle and realize above-mentioned thought, structure arrangement side
Formula has certain difference.
Structure disclosed by the invention is inner cavity cam and centering block, that is, oscillating follower combination organization plan.
Basic design scheme is: inner cavity cam member being mounted on central component by end member dead axle, end
Component and inner cavity cam member and central component constitute end part seal；The inner wall of inner cavity cam member be plane smooth curved section around
The inner cavity cam contour surface that central axis is rotarily formed, each point changes to diameter is synchronous on forming process median generatrix, end profile
It is the closure plane curve of fairing everywhere；The outer surface of central component is also the surface of revolution, thus with inner cavity cam member constitute to
The annular gap that diameter difference changes.Several middlewares are also equipped between the cam contour surface of inner cavity outside central component, it is intermediate
Part is swinging block, and centering block is as cam follower, and the connection structure produced on one end and central component is connect, and junction is along entire
Connection length has leakproofness, sealable higher pair connection is constituted between the other end and inner cavity cam contour surface, thus by annular gap
It is separated into several distance pieces；The end junction of centering block and end member and/or central component also constitutes sealing, makes inner cavity cam
Contoured surface, central component outer surface and centering block between form the work chamber of several sealings that are separated, these seal chambers
Volume variation can occur with the relative motion between inner cavity cam member and central component for room.
There are air inlet and exhaust outlet opening in these work chamber, it is controllable under the valve cooperation of valve timing controller control
The flow direction of gas processed, to be sequentially completed the intake process of Otto cycle, compression process, igniting in each work chamber
The chemical energy that fuel combustion generates is converted inner cavity cam structure by expansion work process and exhaust process, expansion work process
Part is with respect to the mechanical energy that central component is exported in the form of rotary motion.
Inner cavity cam member and central component can be used as the rotor of gyroscopic output, end member with both keep end
Portion seal and make between the two with respect to fixed-axis rotation under the premise of, can be fixed as one with one of both, both can also be opposite independence.
The bus of the appearance surface of revolution of the inner cavity and central component of inner cavity cam member can be the simple flat surfaces such as straight line, camber line
Curve or combinations thereof, inner cavity cam member should make the centering block for constituting cam mechanism relationship therewith exist perpendicular to the cross section profile of shaft
Rigid shock and/or soft impulse are not generated when movement, that is, without velocity jump and sudden change of acceleration.It can be conducive to operate in this way
When cam follower and cam ring profile between the stability that connects, also joint surface is avoided impact wear occur, to improve use
Service life.
Inner cavity cam contour should avoid part discontinuously place as far as possible, otherwise, should try to ensure that when driven member contacts here
Leakproofness.
Straight line, circular arc, spline curve, sine and cosine curve, polynomial curve, elliptic curve etc. can be used in inner cavity cam contour
A variety of common curves of cam contour, or be composed of several.
Inner cavity cam contour is preferably provided closely stop section and/or section of far stopping, even if cam follower higher pair connecting pin exists
The cam contour section being remain stationary apart from the most distant and nearest place position of camshaft, to realize the relatively simple movement of cam follower
Rule reduces its relative motion with central component, to reduce abrasion.
Centering block is mounted in the corresponding centering block slot produced on central component, the extension end with inner cavity cam contour face contact
Shape is consistent with inner cavity cam member surface of revolution shape of generatrix.
Contact of the centering block with cam can by comparing it is easy to accomplish it is force-closed reach, as rigidity is arranged in centering block trench bottom
Spring appropriate or hydraulic coupling can also be realized by high-precision or with radial deformation compensation geometry closing form.
To compensate centering block end wear, enhance leakproofness, centering block can be made into balanced form, such as use more piecewise combinations
Structure, middle part end face are the angle stake docking of cooperation, are reached through a small amount of axile displacements to realize that end face seal compensates；It can also adopt
With multi-disc congruent manner compensation end part seal and enhancing radial seal etc..
Appropriate location in the working chamber that air inlet and exhaust outlet are constituted between the cam member of inner cavity between central component, centering block
Opening, and its opening and closing is controlled by valve respectively.
When inner cavity cam member and central component relatively rotate, constantly changed by the volume for the work chamber that centering block separates.
Centering block release is set according to necessity, effect is in time to block or decontrol centering block.
In addition, igniter should be arranged in gaseous mixture and reach regulation according to using the necessity of fuel that igniter is arranged
The corresponding position in combustion chamber when compression ratio.If the opportunity of fuel adding is not synchronous with the oxidants such as air, fuel filling device
Fuel adding entrance should be arranged in intake process and the corresponding section of compression process.
Single set of the present invention covers dynamical system more, cooperates other lubricating systems, cooling system, air distribution system, control
Other auxiliary systems such as system, that is, may make up complete internal combustion engine.
Cam follower internal combustion engine dynamical system disclosed by the invention, the core as internal combustion engine at least exist with
Under visible advantage:
1. the power that burning generates directly acts on the output rotor of dead axle revolution, returned using with the continuous dead axle of rotor
Then the working chamber of volume variation occurs, the pressure energy that fuel combustion generates directly is absorbed, any motion transform process is not necessarily to, from
And it is short to move transmission link, is conducive to improve transmission efficiency.
2. no matter generating at maximum explosive force in Fuel explosion, still in the late combustion, the arm of force of active force can be kept
It is constant, therefore blast pressure can be fully used.
3. system can accomplish that rotor turns round without acceptance of persons, system balancing is easy to accomplish, therefore moves steadily, in addition without reciprocal fortune
Moving part, kinetic equation loss is small, and system vibration is small, it can be achieved that low noise is run.
4. it can be cooperated in unified structure by control system and realize that the flexible of multiple-working mode part is converted, adaptability pole
Height is especially suitable for coupled computer and carries out flexible automatically control, can also be achieved positive and negative rotation control.
5. system designability is high, the parameter area for adjusting combustibility and power performance is big, it is expected to increase substantially
The thermal efficiency；It may be designed to outer rotor or internal rotor output form.
6. structure is simple, without using requirement on machining accuracy high impeller and three-apexed rotor, therefore manufacturing cost is low.
7. realizing that classical four processes of Otto cycle make to realize that high and low rotating speed operation is applicable using volume variation.It is easy to
Realize that single-turn repeatedly does work, air inflow size and working stroke length can be achieved to adjust, it can be achieved that low-speed big exports.
8. small in size, it is easy to accomplish flattening and thin-long are suitable for different use space demands.Movable part is few, right
It wears insensitive, it is easy to accomplish automatic compensation, high reliablity.
9. usable pluralities of fuel
Detailed description of the invention
Fig. 1 cooperates in inner cavity cam follower internal combustion engine dynamical system basic structure main view and Fig. 2 for centering block
B-B cross-sectional view, cam have area of individually closely stopping, and cam follower centering block quantity is 2, and the way of output is gear output.
Symbol description: the inner cavity e01- cam member, e02- central component, e03- centering block, e04- end member, e05- band gas
The porting of door, e06- igniter
Fig. 2 cooperates inner cavity cam follower internal combustion engine dynamical system basic structure top view cross section view for centering block, corresponding
A-A cross-sectional view in Fig. 1.
Symbol description: the inner cavity e01- cam member, e02- central component, e03- centering block, e04- end member, e05- band gas
The porting of door, e06- igniter
Fig. 3 has area of individually closely stopping for inner cavity cam member, course of work when cam follower centering block quantity is 2
Figure.
Fig. 4 has area of individually closely stopping for inner cavity cam member, the first work when cam follower centering block quantity is 3
Make procedure chart.
Fig. 5 has area of individually closely stopping for inner cavity cam member, second of work when cam follower centering block quantity is 3
Make procedure chart.
Fig. 6 has 2 areas of closely stopping for inner cavity cam member, and cam follower centering block quantity is 6 and is filled by centering block escapement
Set flexible control process chart when control.
Specific embodiment
Further illustrate that it is constituted substantially below in conjunction with attached drawing and technical solution and specific example.Due to existing too much
Variation, demonstrates working principle with a simplest example first.
Convenient for accurate understanding, first to reaffirm the related definition of several cam mechanisms: centering block is to far from cam center axis direction
The process of movement is known as lift, conversely, centering block is known as backhaul to the process moved close to cam center axis direction.Corresponding centering block exists
The cam contour section that distance center axis is remotely remain stationary more nearby is protected area of far stopping, corresponding centering block in distance center axis
Static cam contour section is held area of closely stopping.
Embodiment one
See attached drawing 3, it is assumed that central component is fixed cylindrical body, and inner cavity cam member is rotor, there is one section of area of closely stopping
With the disc cams chamber in one section of area of far stopping, near angle of repose and far angle of repose are slightly less than 180 °.The quantity of centering block is 2, right
Claim arrangement.Overall sealing relationship is assembled as before, no longer repeating, has lesser cylindrical surface to cooperate at centering block center, free end is also set
Set the sealing cylinder of partial concentric.Air inlet and exhaust outlet each two, are located at the inside of central component, separation in two centering blocks it
Between, valve is indicated with switch, is wherein inlet valve with small circle on handle.A pair of of inlet and outlet mouth is one group, along hollow
The inner cavity cam rotation direction of arrow instruction ranks forefront with air inlet in organizing, and exhaust outlet is unlimited.Igniter is arranged two.
The annular gap formed between central component and inner cavity cam is divided into upper and lower two working chambers by two centering blocks, and inner cavity is convex
Two chamber volumes change simultaneously when wheel rotation, and one while become larger, another reduces.And volume when becoming larger working chamber can correspond into
Two processes of gas and expansion work, and two processes of exhaust and compression can be respectively corresponded when volume reduction.Therefore four be may occur in which
Kind assembled state.
Below first by air inlet when starting -- compression combination discusses:
When beginning, epicoele air inlet, while cavity of resorption compresses.Valve state, intracavitary working condition in the course of work see the table below.
Next (9) stage is identical as (1) stage, that is, returns to circulation original state, it is seen that is one and infinitely follows
Ring process.
Due to the special parameter relationship of this example, if circulation is corresponding compression and acting (3) stage since figure
Combination；If circulation is corresponding exhaust and acting combination (5) stage since figure；If circulation (7) rank from figure
Section starts, then is corresponding exhaust and air inlet combination.Thus the difference of this example initial pool does not have any difference.But subsequent example
It will indicate that, the difference of initial pool setting generates different application effects sometimes.
In this example, in inner cavity cam follower two weeks, there is continuous acting process twice, acting is for about 180 ° every time
Angle, total acting power output angle about one week, i.e. there is acting power output in a half period.When exclusive use, rotor continuously returns in the same direction
Turn, have certain energy storage effect, it can be achieved that continuously running, but it is steady to cooperate flywheel use to be more advantageous to movement.If using more
Cover Cascade System or used in parallel, and make each set system without output power area and dynamic output area reasonable combination, can in order to avoid
Remove the energy storage devices such as special flywheel.Compared with piston IC engine, although Otto cycle be both in two turns of interior completions of output shaft,
This example but completes process of doing work twice, and power output angle increases one times.
This example is only that possessed performance, parameter change can cause more complicated variation in given relationship, at that time
Initial pool state may correspond to entirely different cyclic process, it may appear that overlapping, connecting or the separation of multiple power phases
Mode.This point shows especially prominent more in centering block number and cam wave crest number.
Here the remote of cam, near angle of repose only make the movement of centering block more simple, are not necessary, as long as can cause work
Make chamber volume to change and realize that the inner cavity cam of required compression ratio can be used, only the rule of volume variation is more complicated.This example
Middle porting is arranged in central component inner cylinder, and mode appropriate can also be used and be arranged on centering block or inner cavity cam member
On end face.When being even necessarily placed on the cam cylinder of inner cavity because of factors such as central component rotations, centering block only need to be further solved
Sealing problem when being located at port position with cam contact point between adjacent working chamber, the seal f ace width that centering block such as can be used are enough
The mode on the front and back edge for covering in port simultaneously is realized.
It points out by the way, air inlet is forward, so that the air inlet just reverse air inlet of section, airflow direction and cam face friction rolling,
Be conducive to fuel and air mixing.Just section is conducive to full combustion there is also gas transfer to acting process.
Embodiment two
Pass through the situation of Figure 4 and 5 demonstration slightly complexity again below.
Central component is fixed, and has the inner cavity cam member of inner cavity cam contour to make rotor.Pendulum there are three being set on central component
Its outer surface is evenly divided into three sections by block, and centering block uses equivalent arc groove centering block form, and inner cavity cam contour has one
Closely stop area and one is far stopped area, angle of repose substantially as schemed, i.e., inner cavity cam contour closely stop it is corresponding between area and two centering blocks
Central angle it is close, the space between two centering blocks is working chamber or combustion chamber.Inner cavity cam member rotor is shown not in Figure 4 and 5
Corresponding valve state and the intracavitary course of work when with position.Same precedent, there are three working chambers, and there are two types of may for every chamber when initial
The course of work, thus have 8 kinds of different work in combination modes.Different two kinds of output feature are shown here only, remaining is no longer
It discusses one by one.
The first mode:
Fig. 4 is to begin to stop these three combinations of states after compression, cavity of resorption acting air inlet, right chamber since left chamber.
The transition state that so-called process of stopping, i.e. working chamber volume remain unchanged.This example is shown in Fig. 4 and undergoes 12 stages, inner cavity is convex
It takes turns component rotor to complete two weeks, and returns to original state.
Next (13) stage returns to circulation original state, identical as (1) stage.
Air inlet is forward, so that intake process has reverse gas transfer process, is easy to improve mixing uniformity, after air inlet and
There is one section of process of stopping after acting, is conducive to heat exchange.In this mode, in inner cavity, cam member rotor is turned round in two weeks and is completed
One duty cycle, three chambers respectively complete process of once doing work, and acting is spaced 120 ° for about 120 ° twice every time between acting,
It is about 360 ° that energy, which exports total angle, and unpowered output area is also about 360 °, its main feature is that a half period dynamic output, power
Output stability is high, and fluctuation is small.
Second of mode:
Fig. 5 is that compression air inlet, right chamber, these three process composite states that stop cavity of resorption after air inlet are opened since left chamber
Begin.This example is shown in figure undergoes 12 stage inner cavity cam member rotors to complete two weeks, and returns to original state.
Next (13) stage returns to circulation original state, identical as (1) stage.
In this mode, in inner cavity, cam member rotor, which is turned round, completes a duty cycle in two weeks, three chambers are respectively completed once
Acting process, acting connects 360 ° of acting, unpowered output area is also without interval between acting twice for about 120 ° every time
Continuous one week.Its main feature is that a half period dynamic output, power output is strong, but the first opposite mode fluctuation is larger.
In addition, inner cavity cam continuous rotary has certain energy storage effect, it can be achieved that continuously running when this example is used alone,
But it is steady that cooperation flywheel use is more advantageous to movement；If using more set Cascade Systems or used in parallel, and making each set system
No output power area is corresponding with the power output area again of other systems, can not only remove the energy storage devices such as special flywheel from, and
And dynamic property is stronger.
Embodiment three
Fig. 6 further shows variability.
As long as circumferential space is sufficiently large, the quantity of the quantity and cam ring hump (such as area of closely stopping) of centering block can arbitrarily increase
Add.In addition centering block release, the size for completing the working space of each working cycles also be can be changed.
The parameters relationship selected below, simply to illustrate that it is convenient, clear, and do not have limited.It is convex that inner cavity is set in figure
The section of closely stopping of wheel rotor is uniformly distributed two, and the arc length for section of closely stopping is slightly larger than the corresponding arc length of adjacent two centering block, can make two
Centering block is in the state of retraction simultaneously.Centering block quantity is taken as 6 and is evenly distributed with, and uses digital indication.Each centering block is filled by centering block escapement
Control is set, wherein " de- control " indicates that centering block is decontroled by release, " controlled " expression centering block is blocked by release, " is entered
Control " indicates the opportunity that centering block is blocked by release, and " freeing " indicates the opportunity that centering block is decontroled by release.Porting a,
B, the air inlet of c, d, e, f and exhaust outlet are set side by side along axial direction, in figure be only illustrate, the switch symbols band with semicircle indicate into
Port is exhaust outlet without half circle.The action moment or state of valve are shown in figure, what it is with small arrow is action moment,
State not with the arrow for holding.The course of work of working chamber is abbreviated as into (air inlet), pressure (compression), function (acting), row (row
Gas), " beginning " the table beginning starts, " in " indicating that process carries out, " complete " expression process finishes, and compresses and does work and converts intermediate lighted a fire
Journey does not mark.
Assuming that central component is fixed, inner cavity cam makees rotor, and gyratory directions are shown in hollow curved arrow.Inlet and outlet road
Line is indicated with curve with the arrow.
There are two section of closely stopping, 6 centering blocks to be combined into the work of different number for the structure of inner cavity cam follower shown in Fig. 6
Chamber.Such as, centering block release does not control any centering block, can use by 6 geometry working chambers；What centering block release controlled simultaneously
As soon as centering block number increases, then working chamber skillfully reduces one, therefore it is several to may occur in which 5,4,3,2 working chambers etc..Same previous example
Seemingly, every chamber and at least two different processes when initial, the different working modes that can be combined are a large amount of to subclass.
For using 4 chamber operation control modes shown in Fig. 6, while the centering block number being stuck is two, two neighboring geometry
Working chamber is controllably applied in combination, and it is initial when each chamber by cam rotation direction be followed successively by air inlet, compression, acting, exhaust.
Centering block " entering control " and " freeing " are completed at lower dead center, be can avoid centering block movement and are impacted.Therein " half
Pressure " refers to that working media is only compressed to half way, does not recompress, and " surplus row " refers to that combustion chamber has exhaust gas residue not to be discharged.
The course of work is as follows:
Serial number (1): a mouthfuls of corresponding working chambers are independent, prepare air inlet；Centering block 2 and 5 is controlled not to extend out centering block slot, b and c mouthfuls it is right
It answers working chamber to be connected to, prepares compression；D mouthfuls of corresponding working chambers are independent, will do work after igniting；E and f mouthfuls of corresponding working chamber also connects
It is logical, prepare exhaust.
Serial number (2):, can be under seal force or the effect of geometry enclosed construction along cam contour lift due to the de- control of centering block 6 and 3
Section extend out to area of far stopping, and holding divides chamber boundary.The rotation of inner cavity cam, makes each chamber process slightly be in progress, i.e., the oral cavity a volume passively expands
Greatly, air inlet；B, c mouthfuls of joint chamber volumes passively reduce, compression；The acting of the oral cavity d, accelerates drive rotor to rotate forward, and volume increases；
E, f mouthfuls of joint chambers passively reduce, exhaust；At this point, centering block 1 and 4 is in de- control state and contacts with inner cavity cam area of closely stopping, keep
Point chamber boundary, has contracted in centering block slot, can enter control, and the controlled state of centering block 2 and 5 is retracted in centering block slot, but because not with it is interior
Chamber cam contact does not constitute a point chamber boundary, it can not be enabled to free stretching yet, otherwise can cause to tap to inner cavity cam.
Along reaching at centering block 2 and 5 after serial number (3) inner cavity cam backhaul, centering block 2 and 5 it is smooth without impact with inner cavity cam
Closely stop area formed it is in sealing contact after, free, build it is new divide chamber boundary, each chamber process is in progress again；The present oral cavity b, e is independent
It out, is in six chamber discrete states；Centering block 2 intercepts and captures gas half-compressed in combustion chamber from the oral cavity b at this time, and centering block 5 intercepts the burning of the oral cavity e
The exhaust gas that room is not arranged；Centering block 6 and 3 still keeps being retracted in centering block slot, stablizes and enters control, also facilitates free next time.
Serial number (4) inner cavity cam continues to rotate, and centering block 6 and 3 is controlled no longer to be stretched out, so that sealing is exited, because of centering block 2 and 5
Sealing has been taken in de- control, and a is connected to recombination with b mouthfuls of corresponding cavities, and the oral cavity b gas half-compressed is incorporated into intake process, and e and d mouthfuls of corresponding cavities are also
Connection recombination, the surplus exhaust in the oral cavity e are mixed into acting process, meanwhile, the oral cavity c independently executes acting, the oral cavity f independently executes exhaust, respectively
Chamber process continues.In this conversion process, both without unburned fuel idle discharge problem, fuel gas also is mixed into without exhaust gas.
Serial number (5) has just pushed back centering block 3 and 6 in centering block slot until inner cavity cam backhaul again, and a and b mouthfuls of corresponding cavities are completed
Air inlet realizes recombination air inlet, improves air inflow；The compression of the oral cavity c terminates, and realizing conjunction chamber compression can light a fire；D, e has been combined
At acting, realizes and close chamber acting, increase working stroke；The exhaust of the oral cavity f, which terminates to realize, closes chamber exhaust.
So far, Four processes when beginning are completed, and each chamber will start corresponding next process, and inner cavity cam angle is
120°.Compared with when serial number (1), original state is made with this, in addition to angle position differs minus 60 ° therewith, remaining is all the same, connects down
The serial number (6) come and serial number (2) are also such；The six similar processes as above that need to undergo, that is, inner cavity cam can be released as a result,
Rotor revolution can return to original initial state after two weeks, therefore no longer completely show.
It can be seen that 120 ° every turn of inner cavity cam follower, it (but is not in same work that an Otto cycle, which integrally can be completed,
Make intracavitary completion), and process of doing work, with always, every turn of achievable 3 work done, course of work meeting Infinite Cyclic is gone down,
It also can continuously be exported without the energy storage devices such as flywheel power.
In this example as can be seen that the controllable centering block of multi-quantity to recombinate the size of working chamber in use adjustable, increase
The flexibility of power output is also beneficial to improve the geometry utilization rate of working chamber and the utilization rate of fuel energy, have outstanding
Advantage.From centering block control operability analysis is realized, although machine driving control or hydraulic drive can be used in centering block release
It realizes, but should belong to the most convenient using Electromagnetic Control.
Above by several simple examples illustrate inner cavity cam add centering block combine internal combustion engine moving Force system composition,
The method of operation and handling characteristics.As long as there is no boundaries for the quantity of cam follower it is envisioned that radial dimension is sufficiently large.Together
When, stopping similar to distance, also there is no limit thus depending on the quantity of working chamber can be with demand for the cam hump number in area.In addition pendulum
Control of the block release to centering block, design is flexible and can fully demonstrate out using flexibility.As for single-chamber volume, compression
Radial clearance and axial length can be made full use of to solve than, combustion-chamber shape etc..In short, the invention is rotary engine
Research opens wide space.
Claims (9)
1. a kind of centering block cooperates inner cavity cam follower internal combustion engine dynamical system, including inner cavity cam member, central component, end
Portion's component, intermediate member, valve and valve timing controller, it is characterized in that the inner cavity of inner cavity cam member is to change and change to diameter
Continuous revolution shape, constitutes the cam contour surface of continuous fairing, and central component outer surface is also revolution shape and is located at
In the cavity of inner cavity cam member, intermediate member is swinging block, and centering block is mounted on center as cam follower one end in uniform way
On component, the connection structure on central component is the correspondence centering block slot outputed, the cam contour of the other end and inner cavity cam member
Cam mechanism is constituted, end member makes inner cavity cam member and central component for connecting inner cavity cam member and central component
Between realize that dead axle is opposite and turn round；
It constitutes and is changed to diameter difference and difference is not zero between the outer surface of revolution of the cam contour surface and central component of inner cavity cam member
Annular gap, the connection of centering block and central component be it is movable, it is this it is dynamic connection have in entire join domain along axial direction it is close
Feng Xing, while the connection between centering block and the cam contour surface of inner cavity cam member can keep leakproofness during the motion, thus
Annular gap is separated into several distance pieces；
The cam contour surface of the cam follower has single hump, double humps or multiple humps；
Centering block number is at least 3；
End member, inner cavity cam member, central component and make to constitute end part seal between the centering block of cam follower, so that
Each distance piece is sealed off with the external world and each other, and then forms the working chamber of sealing；The working chamber of these sealings is in work
Volume variation can be occurred with movement again by being separated each other by an independent centering block in work；
The valve that the air inlet and exhaust outlet of central component upper opening are controlled in valve timing controller in each work chamber is matched
The flow direction of controllable gas under conjunction；
The intake process including Otto cycle is sequentially completed in each work chamber, stop process, compression process, point after air inlet
Stop after fiery expansion work process, acting process and exhaust process；The thermal energy that expansion work process generates fuel combustion turns
Turn to the mechanical energy that inner cavity cam member and/or central component are exported in the form of rotary motion.
2. a kind of centering block described in claim 1 cooperates inner cavity cam follower internal combustion engine dynamical system, characterized in that described
Contact of the centering block with cam be it is closed by force-closed or geometry, centering block be monomer structure or combined by multi-disc or multistage and
At.
3. a kind of centering block as claimed in claim 2 cooperates inner cavity cam follower internal combustion engine dynamical system, characterized in that described
The surface of revolution bus of inner cavity cam member and/or central component is the combination of straightway, arc section or straightway and arc section；Institute
State inner cavity cam member cam face profile be by circular arc, spline curve, sine and cosine curve or polynomial curve one kind or
It is several to be composed, so that cam follower motion is without velocity jump and sudden change of acceleration.
4. a kind of centering block as claimed in claim 3 cooperates inner cavity cam follower internal combustion engine dynamical system, characterized in that center
Component is cylindrical, cydariform or spherical shape.
5. a kind of centering block as claimed in claim 4 cooperates inner cavity cam follower internal combustion engine dynamical system, characterized in that described
Inner cavity cam member cam face profile, which has, closely to stop area and/or area of far stopping, the corresponding central angle of arc length in area of closely stopping with
The corresponding central angle angle of adjacent two centering blocks slot is close.
6. a kind of centering block cooperation inner cavity cam follower internal combustion engine dynamical system described in claim 5, characterized in that also wrap
Centering block release is included, function is to catch or decontrol in due course centering block, flexibly to change working chamber number and size；Centering block
Release and valve timing controller realize that the arc length in area of closely stopping is corresponding by Electromagnetic Control, hydraulic drive and/or machine driving
Central angle be greater than the corresponding central angle angle of adjacent two centering blocks slot.
7. a kind of centering block cooperation inner cavity cam follower internal combustion engine dynamical system, feature described in one of claim 1~6
Being further includes igniter and/or fuel filling device, and the combustion chamber when gaseous mixture reaches regulation compression ratio is arranged in igniter
Corresponding position, fuel adding entrance are arranged in intake process and the corresponding section of compression process.
8. a kind of internal combustion engine, it is characterized in that motor-driven comprising centering block as claimed in claim 7 cooperation inner cavity cam follower internal-combustion engine
Force system.
9. a kind of internal combustion engine control method, it is characterized in that cooperating inner cavity cam follower internal combustion for centering block as claimed in claim 6
The escapement of the cam follower centering block of engine power system controls, first, centering block and cam follower closely stop area contact when,
When i.e. centering block reaches maximum amount of recovery, in time blocks centering block and be allowed to motionless, that is, break the relation of following up of centering block and cam contour；
Second, centering block and cam follower closely stop area contact when, i.e., when centering block reaches maximum amount of recovery, in time decontrol the pendulum blocked
Block restores the relation of following up of centering block and cam contour；Third, for each centering block, aforementioned two kinds of operations optionally replace
It carries out, to achieve the purpose that dynamic changes working chamber quantity, the single working chamber size of adjustment.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2231243A5 (en) * | 1973-05-21 | 1974-12-20 | Castelli Jean Pierre | Rotary I.C. engine with cylindrical rotor - has spring loaded pivoting vanes defining variable volume chambers |
| CN2687352Y (en) * | 2004-02-18 | 2005-03-23 | 邱建 | Flywheel type engine rotor mechanism |
| CN102588091A (en) * | 2012-03-28 | 2012-07-18 | 李德杰 | Rotary engine with homocentric arc trapezoid swivel plugs |
| CN103742258A (en) * | 2013-12-28 | 2014-04-23 | 袁政 | Novel rotary engine |
| CN203669998U (en) * | 2013-12-28 | 2014-06-25 | 袁政 | Novel rotor engine |
| CN203796405U (en) * | 2014-03-21 | 2014-08-27 | 袁政 | Novel piston structure |
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2017
- 2017-03-23 CN CN201710168290.4A patent/CN106894890B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2231243A5 (en) * | 1973-05-21 | 1974-12-20 | Castelli Jean Pierre | Rotary I.C. engine with cylindrical rotor - has spring loaded pivoting vanes defining variable volume chambers |
| CN2687352Y (en) * | 2004-02-18 | 2005-03-23 | 邱建 | Flywheel type engine rotor mechanism |
| CN102588091A (en) * | 2012-03-28 | 2012-07-18 | 李德杰 | Rotary engine with homocentric arc trapezoid swivel plugs |
| CN103742258A (en) * | 2013-12-28 | 2014-04-23 | 袁政 | Novel rotary engine |
| CN203669998U (en) * | 2013-12-28 | 2014-06-25 | 袁政 | Novel rotor engine |
| CN203796405U (en) * | 2014-03-21 | 2014-08-27 | 袁政 | Novel piston structure |
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