CN103225524B - Large two-stroke engine, inlet valve and cylinder liner - Google Patents
Large two-stroke engine, inlet valve and cylinder liner Download PDFInfo
- Publication number
- CN103225524B CN103225524B CN201310034891.8A CN201310034891A CN103225524B CN 103225524 B CN103225524 B CN 103225524B CN 201310034891 A CN201310034891 A CN 201310034891A CN 103225524 B CN103225524 B CN 103225524B
- Authority
- CN
- China
- Prior art keywords
- air inlet
- inlet
- valve
- cylinder
- wall part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 235000014676 Phragmites communis Nutrition 0.000 claims description 51
- 230000002000 scavenging effect Effects 0.000 claims description 24
- 230000000694 effects Effects 0.000 claims description 23
- 230000002093 peripheral effect Effects 0.000 claims description 22
- 238000000926 separation method Methods 0.000 claims description 17
- 241000196324 Embryophyta Species 0.000 claims description 16
- 244000273256 Phragmites communis Species 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 229910001018 Cast iron Inorganic materials 0.000 claims description 2
- 238000005476 soldering Methods 0.000 claims description 2
- 238000010408 sweeping Methods 0.000 claims description 2
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 238000012856 packing Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 210000000245 forearm Anatomy 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/36—Valve-gear or valve arrangements, e.g. lift-valve gear peculiar to machines or engines of specific type other than four-stroke cycle
- F01L1/38—Valve-gear or valve arrangements, e.g. lift-valve gear peculiar to machines or engines of specific type other than four-stroke cycle for engines with other than four-stroke cycle, e.g. with two-stroke cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/36—Valve-gear or valve arrangements, e.g. lift-valve gear peculiar to machines or engines of specific type other than four-stroke cycle
- F01L1/42—Valve-gear or valve arrangements, e.g. lift-valve gear peculiar to machines or engines of specific type other than four-stroke cycle for machines or engines characterised by cylinder arrangements, e.g. star or fan
-
- 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
- F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
- F02B25/02—Engines characterised by using fresh charge for scavenging cylinders using unidirectional scavenging
- F02B25/04—Engines having ports both in cylinder head and in cylinder wall near bottom of piston stroke
-
- 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
- F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
- F02B25/20—Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports not provided for in, or of interest apart from, subgroups F02B25/02 - F02B25/18
- F02B25/24—Inlet or outlet openings being timed asymmetrically relative to bottom dead-centre
-
- 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
- F02B33/00—Engines characterised by provision of pumps for charging or scavenging
- F02B33/02—Engines with reciprocating-piston pumps; Engines with crankcase pumps
- F02B33/28—Component parts, details or accessories of crankcase pumps, not provided for in, or of interest apart from, subgroups F02B33/02 - F02B33/26
- F02B33/30—Control of inlet or outlet ports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/02—Cylinders; Cylinder heads having cooling means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/18—Other cylinders
- F02F1/22—Other cylinders characterised by having ports in cylinder wall for scavenging or charging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/14—Check valves with flexible valve members
- F16K15/16—Check valves with flexible valve members with tongue-shaped laminae
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Check Valves (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
The invention is related to an inlet valve for an large two-stroke uniflow engine. The inlet valve is designed for locking and opening a gas flow passage leading through one individual inlet sut of a ring of inlet slits, wherein said valve body is mountable at said individual inlet sut from outside of a cylinder and is formed as a sealing for said individual inlet sut. A number of movable valve elements are arranged and dimensioned to open and close said number of gas passages, and said inlet valve is dimensioned and said valve body is mountable such that inlet slits of said ring of inlet slits neighboring said ind ividual inlet sut can also be provided with identical inlet valves. Said valve body at least basically includes a received part which is formed to be received in the individual inlet sut to at least partially fill the individual inlet sut. The invention is also related to a related cylinder liner and an engine having the inlet valve and the cylinder liner.
Description
Technical field
The present invention relates to the two stroke diesel engine of large-sized two-stroke uniflow engine, especially single current.The present invention is also
Be related to inlet valve and cylinder jacket, the inlet valve and cylinder jacket be for this large-sized two-stroke electromotor, it is especially large-scale
Two stroke diesel engine.
Background technology
The large-sized two-stroke electromotor of general type has at least one cylinder, and the cylinder has cylinder wall, wherein described
Cylinder wall is penetrated by least one air inlet choma, and the air inlet is through the cylinder wall so as to by the scavenging air belt of the electromotor
Couple together with the volume of cylinder above the piston of the electromotor in the cylinder.
In this uniflow engine, the air inlet circulation in cylinder perisporium of the gas from combustor side to
The outlet for being typically provided with exhaust valve on cylinder head portions side on the combustor opposite side, i.e. always along equidirectional stream
It is dynamic, therefore it is referred to as uniflow engine.
Combustor is coupled together with engine blow-through air road by the ring of the air inlet port or air inlet opened in cylinder jacket,
Indoor pressure is burnt after the air inlet choma in cylinder wall is passed through on its downward path in piston in the swollen of piston
When the pressure in scavenging air belt is dropped below during swollen stroke, the scavenging of combustor will be started.
If piston, or more specifically Piston volume tube, in expansion stroke through opening air inlet choma and
The indoor pressure of burning will back flow in scavenging air belt higher than the pressure in scavenging air belt, then gas, and therefore occur undesirable
The loss of utilisable energy.And, just in piston through air inlet and before starting to expose air inlet, such as in burning interior 6-
Opening moment under 10 bar pressures, exhaust valve is opened in expansion stroke, and flowing out to the gas in exhaust duct will reduce overvoltage, should
Cross pressure energy to do work on expansion stroke axis piston.
Therefore, it is intended that postpone the opening of air inlet and exhaust valve in expansion stroke, so as in air inlet open with sweeping
Gas, such as fresh air, carry out extending the expansion stroke of piston before scavenging to combustor.If however, the ring system of air inlet
Then work as piston to avoid this undesirable utilisable energy loss into relatively low in cylinder jacket, or more specifically live
Plug ring group, in compression stroke when the air inlet choma opened, scavenging terminates earlier during compression stroke, thus cuts off
By the gas passage of air inlet.
For this purpose, use inlet valve known in the art postpones opening during expansion stroke, i.e. in expansion stroke and compression punching
The asymmetric closure timings of air inlet is produced during journey.That is, the closure timings of air inlet is prolonged during expansion stroke
Exceed piston elapsed time late, and the closure timings of air inlet does not postpone and passes through by piston during compression stroke
And terminate.
Inlet valve for the general type of single current large-sized two-stroke electromotor is used to lock and open by air inlet
The gas flow channel of ring, the air inlet choma is by the cylinder wall of the cylinder of the electromotor and by the scavenging of the electromotor
Road is coupled together with the volume of cylinder above the piston of the electromotor in the cylinder, if the pressure in the scavenging air belt is low
Pressure in the volume of cylinder, then the inlet valve lock the gas flow channel, and if in the scavenging air belt
Pressure then opens the gas flow channel higher than the pressure in the volume of cylinder.For this purpose, the inlet valve includes holding
Carry the valve body of multiple movable valve members.The valve body can be attached to the cylinder, so that the movable valve member is arranged on into institute
In stating gas flow channel, wherein the movable valve member is arranged to the closed position that can be moved from open position and returns
Return, open in gas flow channel described in the open position, close in gas flow channel described in the closed position.
For example in the AZ of european patent application EP 1788218, a kind of ring-type air inlet in cylinder jacket is disclosed
Door, it has valve portion, and the valve portion can open and close air inlet and by by the hydraulic-driven of solenoid valve control.
However, because ring-type inlet valve is arranged on burning interior, therefore, it is difficult to change, and piston (that is, piston ring) grinds
Damage the surface of inlet valve and the annular groove between inlet valve top cylinder jacket wall and inlet valve itself.
Therefore, in other examples being known in the art, inlet valve is arranged on outside cylinder jacket.
Such as Japanese patent application JP 59203820A illustrate a kind of inlet valve arrangement, and wherein ring segment forms one around cylinder jacket
Ring, to make ring segment in opening be aligned with the air inlet in cylinder jacket.Inlet valve has movable valve member, you can rotationally cloth
Put the cylindric valve plug in ring segment opening.There are two air ducts in valve plug, the air duct can be supplied optionally
To there is forced air, to make generation turn to closed mode from open mode and return.Seem to be difficult to make electromotor live
Plug motion is synchronous with plug movement.Therefore, in other examples, using the air inlet of the passive activity valve member with such as reed
Door.
Japanese patent application JP 59049316A illustrate a kind of electromotor, and it has two of the air inlet through cylinder jacket wall
Individual ring.The upper ring of air inlet is connected with air inlet pipe, and check valve 11 is provided with the air inlet pipe.
Japanese patent application JP 62129518A disclose a kind of annular inlet valve that cylinder jacket is surrounded around air inlet
Body.The turning plate valve for being hinged to annular valve body is provided with as check-valves, the pressure in the pressure in combustor is higher than scavenging air belt
When, open under the closure of check ring inlet valve, and the overvoltage in scavenging air belt.
Japanese patent application JP 62129529A disclose a kind of similar inlet valve arrangement, wherein replacing what is be hinged to turn over
Plate, valve reed one end is fixed to valve body, if by from the indoor overvoltage impact of burning, the valve reed itself can be soft
Property ground bending, to make it be compressed against on valve body bearing surface and inlet close.
Compared with the inlet valve in cylinder jacket, above-mentioned inlet valve arrangement is easier to mount in cylinder jacket.If however, examined
Consider the absolute dimension of the air cylinder sleeve of engine diameter of general type, air inlet open height is the order of magnitude of the forearm of adult, then
Complicated annular element is still to be difficult to manufacture and in cylinder jacket.
The content of the invention
It is therefore an object of the present invention to give the large-sized two-stroke electromotor of general type, especially large-sized two-stroke diesel
Machine provides cylinder jacket and inlet valve, can economically fabricate inlet valve and assembled engines, while on the other hand realizing good
Engine efficiency and less inlet valve space requirement.
According to the present invention, including valve body and thus include that the inlet valve of movable valve member being kept is designed for locking
With open through air inlet choma an independent air inlet gas flow channel.For this purpose, the valve body can be arranged on the list
At individual air inlet, and be formed as, for the sealing member of the single air inlet, only being penetrated by multiple gas passages.Inlet valve
The valve member of activity is arranged to and is dimensioned to open and close the plurality of gas passage.
And the inlet valve be dimensioned to and the inlet valve valve body can be mounted so as to it is single with described
The air inlet of the adjacent air inlet choma of air inlet can also be provided with same inlet valve, to make all of the air inlet choma
Air inlet can be provided with independent inlet valve.
And, the valve body by be received part constitute or it is basic constituted by being received part, this is received part shape
Becoming at least be essentially contained in the single air inlet, and the single air inlet is thus filled at least in part, and described
The valve member of activity is at least essentially contained in the single air inlet.In other words, the inlet valve is formed so that it is wrapped
The valve body for including and the valve member of the acquisition and the inlet valve are completely or at least partially contained in institute as overall
State in single air inlet.
As a result find, if the valve body is formed as in the state of the valve body is assembled on the cylinder of the electromotor
At least it is essentially contained in the single air inlet and the valve member of the activity is assembled in described starting in the inlet valve
At least it is essentially contained in the state of on the cylinder of machine in the single air inlet, then engine efficiency can be improved further.This
It is because between the inlet valve of the IC Intake Valve Closes during the expansion stroke of piston, the combustion chamber and each closing
Volume in the air inlet will be the quiet volume for reducing the compression in combustor during the expansion stroke of piston, this is because
The indoor gas of burning is escaped into a certain extent in the described quiet volume in the air inlet.Therefore institute is desirably reduced
State the described quiet volume in the air inlet of air inlet choma.Part is received by described, i.e. described single by being contained in
The valve body in air inlet and/or the valve member of the activity being contained in the single air inlet, it is described it is single enter
QI KOU is at least partially filled, and thus reduces the quiet volume.
Because the valve body is as overall at least basic receiving or can be contained in corresponding air inlet, and due to described
The valve member of activity is at least essentially contained in the single air inlet, so inlet valve at least accommodates or can substantially as entirety
It is contained in corresponding air inlet.Because the inlet valve is at least essentially contained in the air inlet, so in the periphery of cylinder
Space required for the surrounding inlet valve is minimum.Advantageously, the electromotor on the whole can be compacter, and except air inlet
Other assemblies outside door can be made larger and thus can be with more efficient or cheap.It is empty in view of air inlet choma radial outside
Between require reduce, it is advantageous to the valve body is made up of the part that is received.
Large-sized DC formula two stroke engine of the invention has at least one cylinder, and the cylinder has cylinder wall,
The cylinder wall can be formed partly by cylinder jacket.The cylinder wall is through at least one air inlet choma of the cylinder wall and wears
Thoroughly.Each single air inlet of the air inlet choma is designed with an independent inlet valve of the invention.
With known ring type and therefore larger inlet valve compared with, especially because the shape and form of the inlet valve
Determined by the size and dimension of air inlet on size and dimension, the oblong cross-section of the air inlet is about in adult's forearm
Magnitude, therefore the inlet valve of the present invention is easier to mount to cylinder, each cylinder jacket wall.And, manufacture is very easy to, for example cast
Make valve body.Each air inlet of the air inlet choma of the cylinder for each cylinder jacket is also advantageous in that in terms of maintenance
Independent inlet valve is provided with, the inlet valve of readily replaceable reduced size is not only because, but also can only change defective
Specific inlet valve.
If it should be understood that inlet valve can be installed from cylinder outside, also helping and being easily installed and safeguard.And
And, for the present invention, it is all described that statement " valve body is penetrated by multiple gas passages " does not mean only that valve body is encapsulated completely
Gas passage.Can also be that valve body is only formed as part and surrounds one or more described gas passages, and other parts by institute
The internal perisporium for stating air inlet is surrounded.And, for the present invention, statement " valve body keeps the valve member of the plurality of activity " is no
The valve member for being limited to the activity is fixed to the valve body.The valve member of the activity can also be clamped in the valve body and corresponding
Between the internal perisporium of air inlet, and thus kept by the valve body.
In other favourable modifications, each described inlet valve of the electromotor is formed and is mounted so as in group
In the state of being mounted in the single air inlet, its inner surface is lower in off position to form corresponding for indoor gas direction of burning
The border of air inlet, and it is exposed to the indoor gas of burning, i.e. the surface on the inside of combustor is in air inlet.It is preferred that
Ground, the inner surface of the inlet valve of closing is formed at least in part by the valve member of the activity, so as in the activity
Valve member combustor on the side without quiet volume.
In this respect, the plurality of valve member seen can be advantageously formed as multiple reeds or reed blade, each bullet
Spring blade is flat and flexible, and therefore the part of this inner surface can be readily formed, in its closed mode
It is lower to be formed for the indoor gas that burn towards the border of corresponding air inlet, and it is exposed to the indoor gas of burning.This reed
Blade can be fully disposed in corresponding air inlet, and can form the part of the inner surface of the inlet valve of closing.
It should be understood, however, that reed necessarily can not be bent in the volume of combustor.While it is preferred that using one of reed blade shape
Or the valve member of multiple activities, but it is also possible to consideration uses other kinds of passive workpiece as the valve member of activity, example
Such as it is hinged thin slice.In this connection, " passively working " means corresponding valve member only by the indoor pressure of burning and scavenging
Pressure differential between pressure in road is activated.Thus, it is possible to avoid the outside active control for the inlet valve, the outside is main
Dynamic control is expensive and is difficult to be synchronized to the timing of electromotor.In another modification, it is the plurality of activity valve member or
Preferably reed blade may remain in described being received at part.
Valve body needs to be arranged on cylinder at corresponding individually air inlet.Therefore, it can consider that valve body is forced to be held with it
Receive and enter partly in the single air inlet, and remained there by chucking power.Valve body only can be held by described
Receive part composition.
However, it is difficult to reliably install or change the inlet valve with this valve body.Therefore, cylinder jacket of the invention
Or cylinder can have at least one air inlet choma, wherein each air inlet of the air inlet ring is formed for single independence
Inlet valve, and be provided with for the erecting device of the inlet valve at each air inlet of the air inlet choma.
However, the land portion between the air inlet in the air inlet choma should be as narrow as possible, to make by entering
The size of whole gas channels of QI KOU is maximum.When inlet valve is contained in air inlet, led to by whole air-flows of air inlet
The size in road has been defined.
For the preferred installation of valve body " being only received " in the way of it can easily engage and discharge at corresponding air inlet,
The erecting device of cylinder or cylinder jacket at each independent air inlet can be included in the appearance of the cylinder jacket perisporium
The preferably tapered engagement groove of the transverse part office of the inner peripheral surface of face edge and the single air inlet, for shape
Engagement convex portion on the valve body in each inlet valve.Each inlet valve it can be held on two cross sides then
The outermost cross section attachment of part received includes the engagement convex portion stretched out, to connect described in being joined at the independent air inlet
Close groove in, wherein the engagement convex portion it is preferably tapered to be joined to preferably tapered groove in.
The erecting device of cylinder or cylinder jacket is additionally may included between the adjacent inlet valve of each two of the air inlet choma
Screwed hole in each land portion planted, because the land portion for requiring to plant is narrower, the screwed hole is preferably arranged
Into single screwed hole, the screwed hole each extend in the material of cylinder wall.Thus can be consolidated mounting rod by screw
On the land portion that fixed each between two adjacent inlet valves of the air inlet knocker is planted, the screw thread is screwed to
In the screwed hole in the land portion of the plant.The mounting rod can be in the lateral surfaces of the plant land portion
It is prominent, and can be pressed on two adjacent inlet valves in two adjacent air inlets of the air inlet choma.Or, head of screw can
It is prominent in the lateral surfaces of the plant land portion, and can be pressed in two adjacent air inlets of the air inlet choma
On two adjacent inlet valves.
The described of the valve body of inlet valve of the invention is received the shape and size of part or according to the present invention
Its whole valve body is the shape and form of the air inlet of the air inlet choma by cylinder of the invention or cylinder jacket
It is predetermined.This air inlet has generally along the form that the axis direction of cylinder is elongated, and from the outside of cylinder wall
Extended with constant cross section to inner side.This means that the middle land portion between adjacent air inlet becomes from outside to inner side
It is narrow.And, the air inlet generally has the horizontal layout parallel with the plane that the radial direction along cylinder extends.It is preferred that
Ground, each described air inlet of the air inlet choma has one through the direction of the cylinder wall relative to the radial direction of cylinder
Angle, most preferably about 10 degree to 25 degree, such as 20 degree or so, to produce rotation in the indoor scavenging flowing of burning
To strengthen gas mixing.
For the sake of clarity, in this application, limit with reference to the geometric properties of the air inlet for being provided with the inlet valve
The geometric properties of the inlet valve of the present invention, wherein it is assumed that cylinder has vertical axis, bent axle is in bottom.It should be noted that should not only lead to
The reference factor crossed used in this cylinder limits inlet valve.
In order to form the sealing of the inlet valve for above-mentioned form, when in the shape being assembled in the independent air inlet
When observing from cylinder inside under state, the part (in other words, valve body is overall as) that is received of the valve body can have
Elongate form, if especially the body of the inlet valve is only made up of the part that is received, the elongate form has
The form of the independent air inlet, to form the sealing of the air inlet for only being penetrated by the gas passage.It is no matter described
Whether the body of inlet valve is only made up of the part that is received, and the part that is received can be included on the narrow side of one
Top contact wall part in the state of being assembled in air inlet at top, on its another narrow side it is being assembled in air inlet
Bottom contact wall part and mid portion in the state of interior at bottom, the mid portion is connected with each other the top contact wall
Part is penetrated with the top contact wall part and by the gas passage.
The outer surface of the top contact wall part is formed as example with the wall of convex curved in the independent air inlet
The top section of the inner peripheral surface of the independent air inlet is contacted on whole width, the wall of the convex curved is from the valve body
The outermost end for being received part be projected into the innermost end portions that part is received described in the valve body it is described single
In air inlet, preferably with the top contact, and the outer surface of bottom contact wall part is formed as example by convex
The bottom that the wall for bending contacts the inner peripheral surface of the single air inlet on the whole width of the single air inlet is acted,
The wall of the convex curved is projected in the single air inlet from the outermost end to the innermost end portions, preferably with it is described
Bottom contacts.Thus, do not keep or carry the valve member of the plurality of activity and described being held for being made up of material completely
Receive the part of part, i.e., the wall of above-mentioned contact wall part projects upwardly into the innermost end portions for being received part, to make nothing
The major part for helping the air inlet internal volume of the overall size of gas passage is filled, and thus avoids becoming quiet volume.
In another preferred modification, in the state of being assembled in the single air inlet, the mid portion
Level cross-sectionn has the profiled envelope line of fundamental triangle, and connects at the top contact wall part and the top at it
The size in whole length and form between tactile wall part is constant, and the mid portion is with tapered along inward direction
Lateral flanks.Two lateral flanks all contact over the whole length the horizontal stroke of the inner peripheral surface of the single air inlet
To part, and lateral flanks described at least one, preferably two are passed through by the gas passage.By with the construction
Mid portion, in order to cover the gas passage in the closed position, the plurality of reed blade can be supported on the horizontal stroke
To on the surface of flank, and in open position, bend against the transverse part of the inner peripheral surface of the air inlet
On point, the outboard end of each reed blade is fixed and the medial end of each reed blade is bent.
For this purpose, the mid portion preferably has corresponding to the plurality of spring reed in its described lateral flanks
The stayed surface of multiple preferred planars, the plurality of spring reed be supported on the closed position on the stayed surface and
Cover the gas passage.
The lateral flanks preferably extend to the innermost end portions from the outermost end, to reduce quiet volume.No
If the radial direction for only predicting the air inlet with inlet valve relative to angle cylinder extends to cylinder inside with an angle,
The lateral flanks also preferably have different length, are not isosceles to make the triangular envelope line, but two sides
The wing both relative to isosceles triangle incline an inclination angle, preferably about 10 degree to 25 degree, such as 20 degree or so, to help
Or or even produce the rotation of the indoor scavenging flowing of burning.
For particularly with the mid portion of above-mentioned construction, it is preferable that the plurality of spring reed is each
Be formed as rectangle, and at least the mid portion be connected to coupling part on one side thereof under the assembled state
Outer section at the flank, so that it is extended inward in the single air inlet.Each spring reed or reed blade
May be fixedly attached to mid portion or the centre being clamped in just preferably at the tapered engagement convex portion
Between partial outer surface and the lateral part at the described interior weekend of the air inlet.
In order to the mid portion is supported on each cross side of the tapered central portion so as to tapered flank
In the air inlet, at least one, preferably multiple spaced supporting projections are provided with, the supporting projections are in the horizontal stroke
To at flank from the mid portion in transverse direction, it is preferably prominent contacting the list in the horizontal direction in the assembled state
The lateral part of the inner peripheral surface of individual air inlet.
Preferably, the mid portion includes two horizontal outermost land portions and an inner terminal land portion, the horizontal stroke
The top contact wall part and the top contact wall part, the inner terminal are laterally connected with each other to outermost land portion
Land portion connects the top contact wall part and the top contact wall part so that each described lateral flanks from
One of inner terminal land portion is laterally stretched over the horizontal of the horizontal outermost land portion and faces side in the face of side.
At one laterally can be disposed with side in the engagement convex portion of each horizontal outermost land portion.
Preferably, the engagement convex portion extends along whole laterally outermost land portion.Preferably, the engagement convex portion is described
Laterally stretch out in top contact wall part and the top contact wall part.Preferably, band is compressed against re-spective engagement groove
Respective surfaces on the lateral surfaces of each engagement convex portion be at least partially formed respective transversal outermost land portion
Horizontal flat surface.That is, each described bump bonding can be transferred through public horizontal flat surface forms horizontal with corresponding
The part of outermost land portion one.Thus mid portion and whole valve body have the geometric properties of low side, easy to manufacture, for example
Easily casting.Therefore, in another advantageous variant, the valve body is cast iron, the single-casting for being preferably casting pig.
The plurality of gas passage thus can be in the top contact wall part, bottom contact wall part, described
Be formed between most inside groove ridge part and a corresponding horizontal outermost land portion one of the mid portion, preferably
Ground is at two flanks.
In order to reliably and inexpensively fix the plurality of spring reed, the mid portion can be included corresponding to described many
Individual spring reed and in the face of the single air inlet inner peripheral surface lateral part multiple planes connection surface.Institute
State in the state of being assembled in the single air inlet, the plurality of spring reed is clamped in corresponding multiple connection surfaces
And the lateral part of the inner peripheral surface of the single air inlet between.The connection surface of the plurality of plane can be formed in
On one, preferably two horizontal outermost land portion, the horizontal flat table with one, preferably two horizontal outermost land portion
Face forms one, and preferably forms one, preferably two horizontal strokes of the lateral surfaces of the engagement convex portion at the same time
To on the part of the horizontal flat surface of outermost land portion.Thus, the plurality of spring reed can be clamped in described connecing
Close between the lateral surfaces and the described corresponding surface of corresponding engagement groove of lobe.
In order to simplify the transport and installation of the inlet valve, only in above-mentioned preferred another modification, the plurality of bullet
Spring reed is preferably for example pre-attached to the plurality of connection surface by bonding, soldering or spot welding.
And, on the innermost end portions land portion of the inlet valve on each cross side that it has gas passage
Multiple flat surface forming parts of the plurality of stayed surface for the multiple spring reeds of correspondence can be included.It is the plurality of flat
Surface can be a flat surface in the respective lateral side of the inner terminal land portion.
And, the plurality of stayed surface can be formed at least in part by the lateral surfaces of interconnection piston ring land, the interconnection
Piston ring land is connected with each other the inner side land portion and described on the flank of the mid portion with gas passage
It is laterally at least one in outermost land portion.The lateral surfaces of the interconnection piston ring land can be with the inner terminal groove
Connection surface alignment in the plurality of flat surface and the outermost land portion on the flank of ridge part, to make
State spring reed and supported with its whole body under the closed mode of inlet valve.
By the support of interconnection piston ring land, even if compared with scavenging air belt, there is the overvoltage of 8 to 10 bars in combustor, it is also possible to
It is reliably prevented spring reed to block under the closed mode of inlet valve.
And, the inlet valve with described two horizontal outermost land portions and the most inside groove ridge part can be wrapped
At least one, preferably multiple spaced separation projections are included, the separation projection is in prime number land portion inner vertical
Be connected with each other two horizontal outermost land portions and most inside groove ridge part.Because the cross section of the inner side of the land portion is
General triangular, thus it is also general triangular to separate projection.Being received for valve body is realized by the separation projection
Partial further reinforcement.
If it is described separation projection full of material and therefore airtight body, it means that by each separation projection above
Gas passage hermetically separates with the gas passage below the separation projection, then can obtain prior effect.Then, burn
Indoor gas to volume below piston shortcut even without being avoided by also at least being reduced in the position of piston, in the work
Ring of the position piston-ring packing of plug through the inlet valve.If separating institute of the projection in the mid portion of the valve body
State and continue on lateral flanks outside, such as in being extended to the supporting projections, then enhance the effect.
It should be understood that in order to avoid above-mentioned short-circuit effect, each two is adjacent to separate the distance between projection and top contact wall
The distance between the adjacent separation projection in part and top contact wall and with bottom contact the adjacent separation projection of wall part with
The distance between bottom contact wall part is necessarily less than the height of piston-ring packing.
Be advantageously provided with the present invention inlet valve electromotor cylinder or cylinder jacket can be provided be provided with more than a circle or
The air inlet filled with the inlet valve, to extend the opening moment during the compression stroke of piston.Or, if
Cylinder or cylinder jacket only include a circle air inlet, then air inlet can also be arranged at higher position, or by make into
The upper end of QI KOU reaches at the position higher than the situation of the inlet valve not according to the present invention and so that air inlet is longer, this is
Even if due to burning indoor overvoltage up to 8 to 10 bars compared with scavenging air belt, inlet valve of the invention is in the expansion stroke phase
Between will also keep inlet close.
And, in the large-sized uniflow type two stroke engine with the inlet valve, the opening of exhaust valve can postpone
Until piston is in expansion stroke till close BDC lower dead center, so as to most on top land using acting in cylinder
Pressure/energy, such as in the opening timing of burning interior 2-3 Ba Chu during expansion stroke.
Description of the drawings
Hereinafter, the features and advantages of the present invention are explained by accompanying drawing, wherein：
Fig. 1 is provided with the perspective view of the cylinder jacket according to embodiments of the present invention of inlet valve according to embodiments of the present invention；
Fig. 2 is the phantom that the line II-II in Fig. 1 is obtained；
Fig. 3 is the perspective view of in the inlet valve shown in Fig. 1 and 2；
Fig. 4 is perspective view of the inlet valve shown in Fig. 3 in open mode；
Fig. 5 be inlet valve in off position under corresponding to Fig. 4 perspective view；
Fig. 6 is the perspective view of the valve body of above-mentioned inlet valve shown in the drawings；
Fig. 7 is the sectional view that the line VII-VII in Fig. 3 is obtained, and illustrates the inlet valve that reed is opened；
Fig. 8 corresponds to the sectional view of Fig. 7, illustrates the inlet valve that reed is closed；
Fig. 9 is the enlarged drawing of details IX in Fig. 2；With
Figure 10 is the view in the region that region X offsets out paper plane in Fig. 9.
Specific embodiment
With reference first to Fig. 1 and 2.Cylinder jacket 2 with cylindrical circumferential wall 3 is shown, the cylindrical circumferential wall is scattered with identical
Air inlet 8, the air inlet is arranged as the ring 4 of the air inlet 8.In the ring 4 of air inlet, the adjacent air inlet of each pair
8 are all spaced from each other and are opened by 9 points of the land portion (land portion) planted.The ring 4 of air inlet it is described
Air inlet 8 is filled with identical inlet valve 1, and the inlet valve from outside cylinder when observing with generally V-shaped in the view of Fig. 2
Cross section, when being fully accommodated in corresponding air inlet 8, exterior contour follows the profile of corresponding air inlet 8.
One in the inlet valve 1 is shown with general view in Fig. 3,4 and 5.Inlet valve is generally made up of valve body 5,
The valve body has by the predetermined elongated form of form and size and size of the air inlet 8, and inlet valve 1 must coordinate
To in the air inlet.The valve body 5 is generally made up of top contact wall part 13a and bottom contact wall part 13b, described
Top contact wall part and bottom contact wall part are connected with each other by mid portion 10.The mid portion 10 is horizontal in one
Reed blade 6 is carried on side, and reed blade 7 is carried on its lateral sides.
The top and bottom contact wall part 13a, 13b have the convex curved when seeing from the outside of the cylinder jacket 3
Wall, and the wall projects on the direction of corresponding air inlet 8 with constant cross section.The mid portion 10 is horizontal at two
There are two flanks being inwardly tapered on sidepiece, project from the outermost end at the top and bottom contact wall part 13a, 13b
The inner terminal of wall part 13a, 13b is contacted to the top and bottom.The reed blade or spring leaf 6,7 have substantially rectangular
Form, is fixedly attached to the outer end office of the respective transversal flank of the mid portion 10 on side, so as to can
Flapped with the end that its is inward-facing, to open (Fig. 4) or close (Fig. 5) through (figure of gas passage 16 of the mid portion 10
6).In its closed position, they are supported on the corresponding flank of mid portion 10 (Fig. 9 " closing "), and they open at it
Position is supported on the inner peripheral surface of corresponding air inlet 8 (Fig. 9 " opening ").
Fig. 6 is shown specifically the valve body 5.The mid portion 10 of the valve body be included in the mid portion 10 laterally most
Two laterally outermost land portions 11 at outer ledge and at the most medial end of the tapered mid portion 10
Most inner side land portion 17.The outermost and most inner side land portion 11,17 are connected with each other the top and bottom wall portion
13a、13b.In the lateral flanks of the mid portion 10, connection web or connection piston ring land 14 are in corresponding laterally outermost groove
Ridge part 11 and perpendicular to the outermost and most inner side land portion 11,17 extension most between the land portion 17 of inner side.It is described
Connection piston ring land 14 is formed in the pass together with the flat surface 20 in the lateral flanks of the most inner side land portion 17
The stayed surface 14,20 of the spring reed 6,7 of closed position (Fig. 9 " closing ").
The flat surface 18 to form connection surface 18 is provided with the lateral flanks of the laterally outermost land portion 11,
Spring reed 6,7 is for example connected by spot welding with valve body 5 at the flat surface 18.The gas passage 16 is in the connection piston ring land 14
Between through the mid portion 10 lateral flanks.If the spring reed 6,7 is supported on the stayed surface 14,20
(Fig. 8, Fig. 9 " closing "), then the gas passage 16 is closed, and if the spring reed 6,7 is supported on the air inlet 8
On the lateral part of the internal perisporium (Fig. 7, Fig. 9 " opening "), then the gas passage 16 is opened.
On each cross side of the tapered mid portion 10, two spaced supporting projections 12 are provided with.
The supporting projections 12 are laterally projected so that valve body 5 is supported in the air inlet 8, that is to say, that they are in laterally side
Project upwards as far as the top and bottom wall portion 13a, 13b, according to the air inlet 8 the inner peripheral surface 31 it is horizontal
Part in parallel plane extend, referring to Fig. 9,10.
And, the separation that described two horizontal outermost land portions 11 and the most inside groove ridge part pass through general triangular
Projection 15 is connected with each other on the inside of flank.The separation projection 15 is uniformly distributed in the length of the mid portion 10, most goes up
The most lower projection 15 that separates arrives respectively the distance of top contact wall part 13a and bottom contact wall part 13b corresponding to adjacent point
Every the distance between projection 15.On the other hand, the distance is slightly larger than the reciprocating piston-ring packing in the cylinder
Highly.Thus, burn during piston (being exactly piston-ring packing) process indoor gas to volume below piston not
Desired shortcut is at least essentially off.The size of the shortcut is reduced to the lateral flanks front space of mid portion 10
Cross section.If the separation projection 15 on the outside of the lateral flanks on be extended in supporting projections 12, the cross section can also
Closed at least in part.Therefore, the moment that the gas pressure in combustor will not be passed through in piston declines suddenly, equally, i.e.,
Now corresponding air inlet open is made, by the escape of the air inlet 8 of the air inlet choma 4 also by the overvoltage lock in scavenging air belt
It is fixed.
Inlet valve 1 is formed as being fully accommodated in corresponding air inlet 8, preferably as shown in Figure 9.This means to constitute and held
The valve body 5 of part received only needs to be incorporated into from outside cylinder in corresponding air inlet 8 together with the spring reed 6,7 being fixedly connected.
In order to the inlet valve 1 is fixed in corresponding air inlet, preferably as shown in FIG. 7 and 8, the valve body 5 it is described
Mid portion 10 includes engagement convex portion 19 in two outer laterals, and the engagement convex portion connects at the top and bottom
Laterally protrude on the transverse edge of tactile wall part 13a, 13b or stretch out.The engagement convex portion 19 is the laterally most water jacket
The integral part of ridge part 11.The engagement convex portion 19 is used for the groove of the plant of the outer surface in the cylinder jacket 2
The outer edge of ridge part 9 engages the inner peripheral surface of corresponding groove or tapered engagement groove 32 and corresponding air inlet 8
The lateral part (being indicated with reference 31 in Fig. 9 and 10).
Referring now to described Fig. 9 and 10, the construction of the inlet valve 1 in the explanation air inlet 8 and fixation.In Fig. 9
In, an air inlet 8 is shown as inlet valve 1 and closes, and is marked with " closing ", and adjacent air inlet 8 is shown as inlet valve 1 dozen
Open, be labeled as " opening ".It should be understood that this is intended merely to illustrated purpose.
As described above, each inlet valve 1 includes the engagement convex portion 19, with the air inlet 8 of the air inlet choma 4
Between the cylinder wall 3 each land portion 9 planted outer lateral at be joined in the corresponding groove 32.
Between the common surface of each engagement convex portion 19 for laterally facing and corresponding horizontal outermost land portion 11, i.e. Fig. 6
Between the apparent surface of the respective groove of shown stayed surface 18 and engagement groove 32, spring reed 6,7 is clamped and thus
It is in position.
Coordinated with the form for engaging groove 32 by the engagement convex portion 19, whole inlet valve 1 is also fixed, will not
Move to burning indoor.Make it in an outwardly direction not move out corresponding air inlet 8 to fix inlet valve 1, be provided with peace
Dress bar 34, each mounting rod 34 is fixed on the land portion 9 of the plant from outside, and in the piston ring land portion of the plant
Stretch out on the transverse edge for dividing 9, i.e. prominent in the engagement convex portion 19 of the inlet valve valve body 5, and push to enter accordingly
Valve 1 is in place.
Preferably as shown in Figure 10, the land portion 9 of the plant of the cylinder wall 3 is narrower, and is merely provided for list
The space of row's screwed hole 33, to make the gas of the air inlet 8 by the air inlet choma 4 filled with the inlet valve 1
The overall size of body flow passage is maximum.Therefore, by not used for the sufficient space of the mounting flange for installing inlet valve.The problem is led to
Cross the mounting rod 34 to solve, the mounting rod 34 is fixed to by screwed to the screw 35 in the single screwed hole 33
The land portion 9 of the plant of the cylinder wall 3.
Figure 10 be along from paper plane outward direction relative to Fig. 9 skew obtained from, so that the screw 35 can be seen in
One.And, in Fig. 10, inlet valve 1 is shown in the sectional view through in its separation projection 15.
And, Fig. 9 and 10 illustrates that air inlet 8 has the constant width observed in cylinder-bore axis plane.This just anticipates
Taste the land portion 9 of the plant and is narrowed to inner side from the outside of cylinder 2.And, show the axis of symmetry of the air inlet
Line about 20 degree in the example shown, rotates relative to cylinder radial direction journal offset to produce in the scavenging for flowing into.Valve
Body 5 follows the air inlet axis of symmetry relative to the above-mentioned skew of cylinder radial direction.That is, it is in the cylinder-bore axis plane
Profiled envelope line is not isosceles triangle, but the tapered flank with reed 6 is longer, and have the tapered flank of reed 7 compared with
Short, even if so that the inlet valve is positioned in the air inlet, the scavenging of inflow also can rotate, as shown in big arrow in Fig. 9.
In fact, spring reed 6,7 sizes can be with identical, so as to using common port.
The variations and modifications of above-described embodiment are feasible, without deviating from the scope of the present invention.
Claims (43)
1. the inlet valve (1) of large-sized uniflow type two stroke engine is used for, for locking and opening the gas through air inlet choma (4)
Body flow channel, the air inlet choma through the cylinder of the electromotor cylinder wall (3) and by the scavenging of the electromotor
Road is coupled together with the volume of cylinder above the piston of the electromotor in the cylinder, if wherein the pressure in the scavenging air belt
Power locks the gas flow channel less than the pressure in the volume of cylinder, the then inlet valve (1), and if the scavenging
Pressure in road opens the gas flow channel higher than the pressure in the volume of cylinder, the then inlet valve, described
Inlet valve (1) includes valve body (5), and the valve body keeps multiple movable valve members, and (6,7), the valve body can be attached to the gas
Cylinder, so as to by it is described activity valve member (6, in 7) being arranged on the gas flow channel, wherein it is described activity valve member
(6,7) it is arranged to be moved to closed position from open position and return, beat in gas flow channel described in the open position
Open, close in gas flow channel described in the closed position,
The inlet valve (1) is designed for locking and opening the gas of the single air inlet (8) through the air inlet choma (4)
Flow channel, and wherein
The valve body (5) can be arranged on single air inlet (8) place, and be formed as the single air inlet (8)
Sealing member, the valve body is only penetrated by multiple gas passages (16), and wherein it is the plurality of activity valve member (6,7) arrange
Into and be dimensioned to open and close the plurality of gas passage (16), and wherein described activity valve member (6,7)
In being at least contained in the single air inlet (8), and wherein,
The inlet valve (1) be dimensioned to and the valve body (5) can be mounted so as to and single air inlet (8) phase
The air inlet (8) of the adjacent air inlet choma (4) can also be provided with same inlet valve (1), it is characterised in that
The valve body (5) is constituted by being received part, and this is received part and is formed as at least being contained in the single air inlet (8)
In, the single air inlet (8) is thus filled at least in part.
2. inlet valve (1) according to claim 1, it is characterised in that the valve body (5) can install from cylinder outside
At single air inlet (8) place.
3. inlet valve (1) according to claim 1, it is characterised in that when to be assembled in the single air inlet (8) internal
In the state of from cylinder interior observe when, the part that is received of the valve body (5) has with the single air inlet (8)
The elongate form of profile, and including
Top contact wall part (13a) on the narrow side of one, the top contact wall part has outer surface, the outer surface shape
Become the top of the inner peripheral surface (31) that the single air inlet (8) is contacted on the whole width of the single air inlet (8),
The outer surface of the top contact wall part is received the outermost end of part to the valve from the described of the valve body (5)
The innermost end portions of part are received described in body (5) to be projected in the single air inlet (8),
Bottom contact wall part (13b) on its another narrow side, the bottom contact wall part has outer surface, the outer surface
Be formed as contacting the inner peripheral surface (31) of the single air inlet (8) on the whole width of the single air inlet (8)
Bottom, the outer surface of bottom contact wall part is projected into the list from the outermost end to the innermost end portions
In individual air inlet (8), and
The top contact wall part (13a) and the bottom are contacted wall part (13b) by mid portion (10), the mid portion
It is connected with each other, and is penetrated by the gas passage (16).
4. inlet valve (1) according to claim 3, it is characterised in that the outer surface of the top contact wall part has convex
Play the wall of bending.
5. inlet valve (1) according to claim 4, it is characterised in that the outer surface of the top contact wall part it is described
The top contact of the wall of convex curved and the inner peripheral surface (31) of the single air inlet (8).
6. inlet valve (1) according to claim 3, it is characterised in that the outer surface of bottom contact wall part has convex
Play the wall of bending.
7. inlet valve (1) according to claim 6, it is characterised in that the outer surface of bottom contact wall part it is described
The wall of convex curved is contacted with the bottom of the inner peripheral surface (31) of the single air inlet (8).
8. inlet valve (1) according to claim 3, it is characterised in that the single air inlet (8) is internal being assembled in
Under state, the level cross-sectionn of the mid portion (10) has the profiled envelope line of triangle, and at it at the top
The size and form that contact wall part (13a) is contacted in the whole length between wall part (13b) with the bottom is constant, and
The mid portion has along the tapered lateral flanks of inward direction, wherein
Two lateral flanks all contact over the whole length the inner peripheral surface (31) of the single air inlet (8)
Lateral part, and lateral flanks described at least one are passed through by the gas passage (16), and wherein
The lateral flanks have different length, so that the profiled envelope line for making the triangle is not isosceles, but two
Flank inclines an inclination angle both relative to isosceles triangle.
9. inlet valve (1) according to claim 8, it is characterised in that the lateral flanks extend from the outermost end
To the innermost end portions.
10. inlet valve (1) according to claim 8, it is characterised in that two lateral flanks are by the gas passage
(16) pass through.
11. inlet valves (1) according to claim 8, it is characterised in that the inclination angle is of about 20 degree.
12. inlet valves (1) according to claim 3, it is characterised in that the tapered mid portion (10) each
At least one supporting projections (12) are designed with cross side, the supporting projections are at lateral flanks from the mid portion (10)
Project in transverse direction to contact the lateral part of the inner peripheral surface (31) of the single air inlet (8).
13. inlet valves (1) according to claim 12, it is characterised in that the supporting projections (12) are multiple mutual
The supporting projections for separating.
14. inlet valves (1) according to claim 12, it is characterised in that the supporting projections are at the lateral flanks
Project in the horizontal direction in the assembled state from the mid portion (10).
15. inlet valves (1) according to claim 3, it is characterised in that the mid portion (10) is on two cross sides
Include engagement convex portion (19) in described being received near the outermost end of part, the engagement convex portion connects at the top
Laterally stretch out on tactile wall part (13a) and bottom contact wall part (13b), to be joined to the outer surface in the cylinder
In the re-spective engagement groove of the transverse part office of the inner peripheral surface (31) of edge and the single air inlet (8), wherein
During the engagement convex portion (19) is joined to groove.
16. inlet valves (1) according to claim 8, it is characterised in that the mid portion (10) is on two cross sides
Include engagement convex portion (19) in described being received near the outermost end of part, the engagement convex portion connects at the top
Laterally stretch out on tactile wall part (13a) and bottom contact wall part (13b), to be joined to the outer surface in the cylinder
In the re-spective engagement groove of the transverse part office of the inner peripheral surface (31) of edge and the single air inlet (8), wherein
During the engagement convex portion (19) is joined to groove.
17. inlet valves (1) according to claim 15, it is characterised in that the engagement convex portion (19) be it is tapered with
In being joined to the tapered groove.
18. inlet valves (1) according to claim 16, it is characterised in that the engagement convex portion (19) is in its outer surface
The alignment portion of the lateral flanks of the profiled envelope line of the upper triangle for forming the level cross-sectionn.
19. inlet valves (1) according to claim 8, it is characterised in that and the mid portion (11,14,15,16,17) wrap
Include：
Two horizontal outermost land portions (11), the horizontal outermost land portion is laterally connected with each other the top contact wall
Partly (13a) and the bottom contact wall part (13b), and inner terminal land portion (17), inner terminal land portion connection
The top contact wall part (13a) and bottom contact wall part (13b), so that each described lateral flanks is from most
One of inner land portion (17) is laterally stretched over laterally facing for horizontal outermost land portion (11) in the face of side
Side, wherein
The plurality of gas passage (16) is at least formed in the top contact wall part (13a), the bottom on side and connects
Corresponding one in tactile wall part (13b), the inner terminal land portion (17) and the horizontal outermost land portion (11) it
Between.
20. inlet valves (1) according to claim 19, it is characterised in that the horizontal outermost land portion is in outermost end
Place is laterally connected with each other the top contact wall part (13a) and bottom contact wall part (13b).
21. inlet valves (1) according to claim 19, it is characterised in that the inner terminal land portion (17) is most interior
Connect the top contact wall part (13a) and bottom contact wall part (13b) at end.
22. inlet valves (1) according to claim 19, it is characterised in that the plurality of gas passage (16) is on both sides
It is formed in the top contact wall part (13a), bottom contact wall part (13b), the inner terminal land portion (17)
And corresponding in the horizontal outermost land portion (11) between.
23. inlet valves (1) according to claim 19, it is characterised in that described two horizontal outermost land portions (11)
Vertically it is connected with each other by least one separation projection (15) with the inner terminal land portion (17), the separation projection exists
Described two horizontal land portions (11) and the inner terminal land portion (17) inner side so that in each separation projection (15)
The gas passage (16) of side hermetically separates with the gas passage (16) below separation projection (15).
24. inlet valves (1) according to claim 23, it is characterised in that described two horizontal outermost land portions (11)
Vertically it is connected with each other by multiple spaced separations projection (15) with the inner terminal land portion (17).
Inlet valve (1) described in 25. any one in the claims, it is characterised in that the plurality of activity
Valve member (6,7) be formed as flat and flexible multiple spring reeds (6,7).
26. inlet valves (1) according to claim 25, it is characterised in that and the plurality of spring reed (6,7) each shape
Become rectangle, and coupling part (22) place at least under the assembled state on one side thereof is connected to the valve body (5),
To make it extend inward in the single air inlet (8), and wherein described valve body (5) is with corresponding to the plurality of bullet
Spring reed (6, and multiple stayed surfaces 7) (14,20), the plurality of spring reed (6,7) it is supported on the closed position
The gas passage (16) is covered on the stayed surface.
27. inlet valves (1) according to claim 26, it is characterised in that (6,7) each is at least for the plurality of spring reed
Coupling part (22) place under the assembled state on one side thereof is connected in the horizontal outermost land portion (11)
One horizontal outermost land portion.
28. inlet valves (1) according to claim 26, it is characterised in that in the lateral flanks of the valve body (5)
The mid portion (10) with corresponding to the plurality of spring reed (6, multiple stayed surfaces 7) (14,20).
29. inlet valves (1) according to claim 26, it is characterised in that the stayed surface is plane.
30. inlet valves (1) according to claim 25, it is characterised in that the mid portion (10) is included corresponding to institute
State multiple spring reeds (6, multiple connection surfaces (18) 7), so as under the assembled state, the plurality of spring reed
(6,7) it is clamped in the plurality of connection surface (18) and divides it with the transverse part of the inner peripheral surface of the single air inlet (8)
Between, wherein the plurality of spring reed (6,7) the plurality of connection surface is pre-attached to by bonding, soldering or spot welding
(18)。
31. inlet valves (1) according to claim 30, it is characterised in that the mid portion (10) is convex in the engagement
Include on the cross side for playing portion (19) corresponding to the plurality of spring reed (6, multiple connection surfaces (18) 7).
32. inlet valves (1) according to claim 30, it is characterised in that the connection surface (18) is plane.
33. inlet valves (1) according to claim 30, it is characterised in that the inner terminal land portion (17) has at it
Have on every side of gas passage (16) and all there are multiple flat surfaces (20), described for the valve body (5) is received part
The side on the plurality of spring reed (6,7), the spring reed formed the plurality of stayed surface (14,20) at least
A part, and/or be received at least side of part in the described of the valve body (5) with gas passage (16)
Horizontal outermost land portion (11) described at least one is between connection surface (18) and the inner terminal land portion (17)
It is connected with each other with the inner terminal land portion (17) by connection piston ring land (14) in region, connection piston ring land (14) forms institute
State multiple stayed surfaces (14, at least a portion 20).
34. inlet valves (1) according to claim 25, it is characterised in that the valve body (5) is cast iron single-piece.
35. inlet valves (1) according to claim 34, it is characterised in that the valve body (5) is casting pig single-piece.
36. cylinder jacket (2) for being used for large-sized uniflow type two stroke engine, the cylinder jacket has for forming the electromotor
Cylinder wall a part cylinder wall (3), wherein the cylinder wall (3) is through at least one of the cylinder wall (3)
Air inlet choma (4) is penetrated, so as to by above the piston of the electromotor in the scavenging air belt of the electromotor and the cylinder
Volume of cylinder is coupled together, it is characterised in that each air inlet (8) of the air inlet choma (4) is formed for according to above-mentioned
A single inlet valve (1) described in any one in claim, and in each air inlet of the air inlet choma (4)
Mouthful (8) place be provided with for the inlet valve (1) erecting device (32,33).
37. cylinder jacket (2) according to claim 36, it is characterised in that in the peace at each single air inlet (8) place
Assembling device (32,33) it is included in the outer surface edge of the cylinder jacket (2) and the inner peripheral surface of the single air inlet (8)
(31) the engagement groove (32) of transverse part office, the engagement that the engagement groove is used to be formed on each described inlet valve is convex
Rise portion (19), and/or each single air inlet (8) place the erecting device (32,33) be included in the air inlet choma (4)
The adjacent air inlet of each two (8) between each plant land portion (9) in single screwed hole (33).
38. cylinder jacket (2) according to claim 37, it is characterised in that engagement groove (32) is tapered.
39. large-sized uniflow type two stroke engines, it has at least one cylinder, and the cylinder has cylinder wall (3), wherein institute
State cylinder wall (3) and be through at least one air inlet choma (4) of the cylinder wall (3) and penetrate, so as to sweeping the electromotor
Volume of cylinder above the piston of the electromotor in air flue and the cylinder is coupled together, it is characterised in that the air inlet
Each single air inlet (8) of choma (4) is designed with one described in any one in the claims 1 to 35
Independent inlet valve (1).
40. electromotors according to claim 39, it is characterised in that each independent air inlet (8) is designed with described
The engagement of the transverse part office of the inner peripheral surface (31) of the outer surface edge of cylinder jacket (2) and the single air inlet (8)
Groove, and each described inlet valve (1) be designed with it is described be received part, it is described be received part and have be joined to described connecing
Close the engagement convex portion (19) for crossing out in groove.
41. electromotors according to claim 40, it is characterised in that the engagement groove is tapered.
42. electromotors according to claim 39 or 40 or 41, it is characterised in that in the air inlet choma (4) at least
The plant land portion (9) with cylinder wall (3), is fixed with the plant land portion between two adjacent air inlets (8)
Mounting rod (34), wherein the mounting rod (34) is prominent in the lateral surfaces of the plant land portion (9), and is pressed in institute
State on the inlet valve (1) in the described two adjacent air inlet (8) of air inlet choma (4).
43. electromotors according to claim 42, it is characterised in that fixed by screw (35) on the plant land portion
There is mounting rod (34), the screw thread is screwed in the single screwed hole (33) in the plant land portion (9).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA201200081A DK179051B1 (en) | 2012-01-30 | 2012-01-30 | Large two-stroke engine, inlet valve and cylinder liner |
| DKPA201200081 | 2012-01-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103225524A CN103225524A (en) | 2013-07-31 |
| CN103225524B true CN103225524B (en) | 2017-05-03 |
Family
ID=58746793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310034891.8A Expired - Fee Related CN103225524B (en) | 2012-01-30 | 2013-01-30 | Large two-stroke engine, inlet valve and cylinder liner |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6132184B2 (en) |
| KR (1) | KR101694740B1 (en) |
| CN (1) | CN103225524B (en) |
| DK (1) | DK179051B1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065827A (en) * | 2016-05-18 | 2016-11-02 | 宁波大叶园林设备有限公司 | Use the two stroke engine of left box body square hole filter screen turbulent flow scavenging |
| CN106351729A (en) * | 2016-09-05 | 2017-01-25 | 宁波大叶园林设备有限公司 | Two-stroke engine for performing turbulence scavenging through right bent axle tank body with multi-irregularly-shaped partition |
| CN109162821A (en) * | 2018-10-29 | 2019-01-08 | 宁波吉利罗佑发动机零部件有限公司 | The control method of cylinder, two stroke engine and its working cycles |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB590851A (en) * | 1944-04-24 | 1947-07-30 | Sulzer Ag | Improvements in or relating to internal combustion engines operating on the two-stroke cycle |
| GB736585A (en) * | 1951-02-26 | 1955-09-14 | Doxford William & Sons Ltd | Improvements in or relating to opposed piston two-stroke internal combustion engines |
| US3815558A (en) * | 1972-08-07 | 1974-06-11 | W Tenney | Scavenge porting system |
| JPS5118224A (en) * | 1974-08-06 | 1976-02-13 | Nippon Steel Corp | Renzokuchuzochuno chuhenhabakakudaihoho |
| JPS6029809B2 (en) * | 1979-12-03 | 1985-07-12 | 三菱重工業株式会社 | Scavenging device for 2-stroke internal combustion engine |
| JPS5949316A (en) * | 1982-09-14 | 1984-03-21 | Mitsui Eng & Shipbuild Co Ltd | Scavenging port device |
| JPH0231216B2 (en) * | 1983-05-04 | 1990-07-12 | Hitachi Shipbuilding Eng Co | ROOTARISHIKISOKIKANSEIBEN |
| JPS62129519A (en) * | 1985-11-28 | 1987-06-11 | Mitsubishi Heavy Ind Ltd | Scavenging port control type internal combustion engine |
| JPS62129518A (en) * | 1985-11-28 | 1987-06-11 | Mitsubishi Heavy Ind Ltd | Scavenging port control type internal combustion engine |
| JPH0629809B2 (en) * | 1987-03-03 | 1994-04-20 | 工業技術院長 | Pressure sensor |
| DE4011140C2 (en) * | 1990-04-06 | 1999-12-02 | Werner Bohne | Two-stroke internal combustion engine with mixture-free purging, adjustable inlet and outlet device, as well as lift shaft-free power transmission, in a two-cylinder design |
| DE4225369A1 (en) * | 1992-07-31 | 1994-02-03 | Bosch Gmbh Robert | Gas-exchange system for two-stroke engine - uses pre-compressed combustion air to provide second rinsing cycle provided via inlet valve controlled by differential pressure |
| JP3187704B2 (en) * | 1996-02-08 | 2001-07-11 | 今在家精工株式会社 | Engine reed valve device |
| JPH10220234A (en) * | 1997-02-10 | 1998-08-18 | Suzuki Motor Corp | Reed valve device for two cycle engine |
| KR100551516B1 (en) * | 2002-05-21 | 2006-02-13 | 맨 비 앤드 더블유 디젤 에이/에스 | Compact scavenge air receiver and cylinder frame |
| DE102005019520B4 (en) * | 2005-04-27 | 2017-05-04 | Andreas Stihl Ag & Co. Kg | Cylinder for a two-stroke engine |
| JP4395474B2 (en) * | 2005-11-18 | 2010-01-06 | 三菱重工業株式会社 | Internal combustion engine equipped with scavenging control device |
| GB2432398B (en) * | 2005-11-18 | 2008-08-13 | Lotus Car | Reciprocating piston sleeve valve engine |
-
2012
- 2012-01-30 DK DKPA201200081A patent/DK179051B1/en not_active IP Right Cessation
-
2013
- 2013-01-29 KR KR1020130009922A patent/KR101694740B1/en active IP Right Grant
- 2013-01-29 JP JP2013013805A patent/JP6132184B2/en not_active Expired - Fee Related
- 2013-01-30 CN CN201310034891.8A patent/CN103225524B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP6132184B2 (en) | 2017-05-24 |
| CN103225524A (en) | 2013-07-31 |
| KR101694740B1 (en) | 2017-01-10 |
| DK201200081A (en) | 2013-07-31 |
| KR20130088072A (en) | 2013-08-07 |
| DK179051B1 (en) | 2017-09-18 |
| JP2013155737A (en) | 2013-08-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5984477B2 (en) | Intake device for two-cycle internal combustion engine | |
| CN103225524B (en) | Large two-stroke engine, inlet valve and cylinder liner | |
| KR20100028666A (en) | Split-cycle engine with a helical crossover passage | |
| US8220429B2 (en) | Overhead valve and rocker arm configuration for a small engine | |
| CA2289261A1 (en) | A rotary and reciprocating internal combustion engine and compressor | |
| AU686204B2 (en) | Dwelling scotch yoke engine | |
| CN104704236B (en) | Pump with vibration damping mounting assembly | |
| KR20030076975A (en) | Internal Combustion Engine | |
| JP2019011761A (en) | Internal combustion engine | |
| US3008459A (en) | Fuel induction system for gasoline engine | |
| ES2526866T3 (en) | Internal combustion engine | |
| JP2016504518A (en) | Internal combustion engine with asymmetric port timing | |
| CN207161147U (en) | Pendulum piston type working machine | |
| CN208982283U (en) | Small-size screw rod all-in-one integrated device | |
| US7370618B2 (en) | Internal combustion engine with five valves per cylinder | |
| JP2016539279A (en) | Reciprocating engine and operation method thereof | |
| EP1851422A1 (en) | Desmodromic transmission engine | |
| JP6410630B2 (en) | Cylinder head and engine | |
| EP1766189A1 (en) | Device-operating module | |
| US2034900A (en) | Internal combustion engine | |
| CN113818942A (en) | Valve actuating mechanism of gasoline engine | |
| JP4288032B2 (en) | 2-cycle engine | |
| WO2020227741A1 (en) | Internal combustion engine | |
| US20180328263A1 (en) | Uniflow engine with intake and/or exhaust valves | |
| JPH05133204A (en) | Air-cooled engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170503 Termination date: 20210130 |