CN206860306U - A kind of engine and its piston with turbulence chamber - Google Patents
A kind of engine and its piston with turbulence chamber Download PDFInfo
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- CN206860306U CN206860306U CN201720631916.6U CN201720631916U CN206860306U CN 206860306 U CN206860306 U CN 206860306U CN 201720631916 U CN201720631916 U CN 201720631916U CN 206860306 U CN206860306 U CN 206860306U
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- guiding gutter
- piston
- valve pit
- chamber
- air cell
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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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Abstract
The utility model discloses a kind of engine and its piston with turbulence chamber, piston includes：Piston body, the end face of piston body are provided with guiding gutter and valve pit；Guiding gutter and valve pit are oppositely arranged and form combustion chamber；Distalmost end side wall of the guiding gutter away from valve pit side is curved surface.Originally it is the piston of utility model while adds tumble flow effect and eddy current effect that air mixture enters main chamber from minor air cell, also improve the compression ratio of (i.e. the engine) of piston, and then air mixture is caused to be mixed in main chamber more abundant, substantially reduce the flow losses of air mixture, improve the starting performance of engine, be advantageous to complete, the homogenous combustion of combustion gas, improve the thermal efficiency, while reduce exhaust emissions.
Description
Technical field
Technical field of engines is the utility model is related to, espespecially a kind of engine and its piston with turbulence chamber.
Background technology
With advances in technology, requirement more and more higher of the people to ride comfort.Using the compression ignition of divided combustion chamber
Formula engine, combustion noise is low, under vibration, meets requirement of the client to ride comfort, meanwhile, such h type engine h is to oil product
There is good adaptability, under the conditions of the quality of the existing fuel oil in China, good combustibility can be obtained.With this combustion chamber
Compression ignition engine, its is simple in construction, and production cost is low, has the very strong market competitiveness.
The combustion chamber of the compression ignition engine of divided combustion chamber is made up of two parts, first, the secondary burning in cylinder cap
Room (i.e. minor air cell), another is the main chamber formed between cylinder cap and piston, and major and minor combustion chamber has passage to be connected.Gaseous mixture
Formation and combustion process carried out in succession in subsidiary combustion chamber and main chamber.During compression, air is passed through by main chamber
Passage enters subsidiary combustion chamber, and its air motion formed in subsidiary combustion chamber is determined by the shape and angle of passage
's.After fuel oil enters subsidiary combustion chamber, mixed with air, part burning in advance, in the presence of combustion heat release, promote subsidiary combustion chamber
Interior gaseous mixture pours main chamber by passage.
At present, some pistons had both set valve pit in its end face, and were separately provided with combustion recess, but this same
When set the structure of valve pit and combustion recess highly difficult for the compression ratio of increase cylinder (piston), cause engine
Dynamic property and less economical；Some pistons are not provided with guiding gutter in its end face so that air-flow directly enters from minor air cell to be led
Combustion chamber, air-flow directly will be hit on piston wall, consume the kinetic energy of air-flow, are caused its tumble flow effect poor, are unfavorable for oil gas
Mixing, so as to reduce the dynamic property of engine and economy；When in-engine main burning Indoor Combustion is insufficient, easily produce
Poisonous and hazardous gas, environment is polluted, and then be detrimental to health, serious environmental problem and health problem are brought to the mankind.
Therefore, the application is directed to providing a kind of hair with turbulence chamber with good dynamic property and economy
Motivation and its piston.
The content of the invention
The purpose of this utility model is to provide a kind of engine and its piston with turbulence chamber, and piston adds mixed
The tumble flow effect and eddy current effect when combustion gas enters main chamber from minor air cell are closed, also improves the pressure of (i.e. the engine) of piston
Contracting ratio, and then cause air mixture to be mixed in main chamber more abundant, substantially reduce the flowing damage of air mixture
Lose, improve the starting performance of engine.
The technical scheme that the utility model is provided is as follows：
A kind of engine with turbulence chamber, including：
Piston body, the end face of the piston body are provided with guiding gutter and valve pit；
The guiding gutter and the valve pit are oppositely arranged and form combustion chamber；
Distalmost end side wall of the guiding gutter away from the valve pit side is curved surface.
In the technical program, the combustion chamber on piston body end face is collectively forming by valve hole and guiding gutter, and valve cheats a side
Face is used for the mixing of tissue oil gas as a part for combustion chamber, the compression ratio of piston (i.e. engine) is improved, due to pressure
Rise can allow the density of gas to become big, and intermolecular distance also just diminishes, and such fuel molecule and oxygen molecule distance is also just more
Closely, burning velocity is just faster；Temperature can allow gas molecule motion speed to be accelerated, and fuel molecule and oxygen molecule are easily mutual
Phase separation, this just allows mixed gas to be easier to light.And less combustion space can complete to burn faster, combustion process
Accelerate and burning be abundant, not only increase the power performance and efficiency of combustion of engine, also improve economy, also reduce because
Oil gas burning is insufficient and produces dusty gas；And wall of the guiding gutter away from valve hole side is (i.e. with connecting minor air cell and master
The wall that the swirl channel of combustion chamber is connected) it is curved surface, first, the gaseous mixture that the setting of guiding gutter is avoided in minor air cell is straight
Connect the end face for pouring piston and cause its dynamic loss of energy so that gaseous mixture can smoothly enter main chamber along its curved surface, drop
The low gas-flow resistance of gaseous mixture, reduce the kinetic energy loss of gaseous mixture direct collision, formed in the presence of descent of piston strong
Tumble flow effect, so as to improve air-flow rolling effect；Secondly because the guide functions of guiding gutter so that the air-flow of gaseous mixture is more
Smooth-going flows to valve pit, so as to substantially reduce flow losses, improves the starting performance of engine.Therefore, this practicality
It is new, change the gas flow flowed out from minor air cell and the gaseous mixture of combustion chamber is flowed to by swirl channel so that enter combustion
The gaseous mixture of burning room had both produced the vortex gas flow circumferentially operated along piston, while tumble flow gas of the activity along piston axial operation
Stream so that gaseous mixture mixes more fully and rapid, is advantageous to complete, the homogenous combustion of combustion gas, improves the thermal efficiency, drops simultaneously
Low exhaust gas discharges.
It is further preferred that the arc radius scope of radial direction of the curved surface along the piston body is 5-30mm.
It is further preferred that the arc radius scope of axis direction of the curved surface along the piston body is 5-60mm；With/
Or, the angular range between the bottom surface of the guiding gutter and the end face of the piston body is 1-2 °；And/or the guiding gutter
Width range is 10-30mm；And/or the bottom surface of the valve pit and the end face of the piston body be arranged in parallel；And/or institute
State guiding gutter and the round and smooth connection of valve pit.
In the technical program, radius along piston end surface extension direction of the curved surface of guiding gutter and along piston axis direction half
Footpath may be the same or different, and can be adjusted according to being actually needed, applied widely.
In the technical program, the bottom surface of guiding gutter is obliquely installed so that gaseous mixture can be along the guide direction of guiding gutter
Flowing so that gaseous mixture more easily produces the vortex gas flow circumferentially operated along piston, so that gaseous mixture mixes more
It is fully and rapid, be advantageous to complete, the homogenous combustion of combustion gas, improve the thermal efficiency, while reduce exhaust emissions.
It is further preferred that the valve pit includes inlet valve pit and exhaust valve pit.
In the technical program, inlet valve pit and exhaust valve pit are separately provided the volume for increasing combustion chamber, and play
The effect of valve is avoided, the also part as combustion chamber is used for the mixing of tissue oil gas.So that from subsidiary combustion chamber (minor air cell)
The fuel gas mixture of passage outflow, after cylinder is entered, gaseous mixture had both produced the vortex circumferentially operated along the radial direction of piston end surface
Air-flow, i.e. gaseous mixture flow to inlet valve pit and exhaust valve pit from guiding gutter；The tumble flow along piston axial operation is produced simultaneously
The depth direction flowing of air-flow, i.e. gaseous mixture along combustion chamber；So, the gaseous mixture in combustion chamber can obtain suitable vortex
And Tumble intensity, make combustion gas mixing more fully and rapid, be advantageous to complete, the homogenous combustion of combustion gas, improve the thermal efficiency, simultaneously
Reduce exhaust emissions.
It is further preferred that the guiding gutter include be connected with each other first and second, the first of the guiding gutter
Portion is away from the valve pit, and the structure that takes the shape of the letter U, its blind end are the distalmost end side wall of the guiding gutter；The guiding gutter
Second the first sub-portion for including setting with footpath with the inlet valve pit, the second son set with the exhaust valve pit with footpath
Portion, and the 3rd sub-portion between the inlet valve pit and the exhaust valve pit.
In the technical program, guiding gutter done close to the part of swirl channel it is in the arc-shaped, i.e., away from away from valve pit
Side wall is curved surface, and therefore, guiding gutter of the gaseous mixture flowed out from swirl channel along arc gradually changes direction, reduces mixing
The kinetic energy loss of gas direct collision, strong tumble flow effect is formed in the presence of descent of piston.Guiding gutter and inlet and outlet door are recessed
Sector is made in the part of hole linking, is advantageous to mixed airflow and is radiated to inlet and outlet door, and drains shape by inlet and outlet door pit
Into two bursts of tumble flows, strengthen the tumble flow effect of gaseous mixture.
It is further preferred that the side wall of first of the guiding gutter and the side wall of second of the guiding gutter are circular arc
Chamfering connects, and the connection radius of its circular arc chamfering is 3-10mm.
In the technical program, first of guiding gutter and second is round and smooth connection so that gaseous mixture can be smoothly without hindrance
Valve pit is flowed to from guiding gutter, avoids kinetic energy rejection of the gaseous mixture in flowing, so as to ensure that the vortex of gaseous mixture is imitated
Fruit.
The invention also discloses a kind of engine with turbulence chamber, it includes：
Main chamber and minor air cell；
The main chamber is arranged between piston and cylinder head, and the piston is above-mentioned any described piston；
The minor air cell is arranged in cylinder head, and is connected with nozzle opening；
The minor air cell is communicated with the main chamber by swirl channel；
Guiding gutter and the position correspondence of the swirl channel on the end face of the piston.
In the technical program, the main chamber on the end face by piston of engine, which changes, to be flowed out and leads to from minor air cell
Cross the gas flow that swirl channel flows to the gaseous mixture of main chamber so that the gaseous mixture into main chamber had both been produced along piston
The vortex gas flow circumferentially operated, while activity along piston axial operation tumble flow air-flow so that gaseous mixture mixes more to fill
Divide and rapid, be advantageous to complete, the homogenous combustion of combustion gas, improve the thermal efficiency, while reduce exhaust emissions.And on piston end surface
Main chamber is collectively forming by valve hole and guiding gutter, and on the one hand valve hole can be used for avoiding valve, on the other hand as burning
A part for room is used for the mixing of tissue oil gas, the compression ratio of piston (i.e. engine) is improved, because pressure rise can allow
The density of gas becomes big, and intermolecular distance also just diminishes, and such fuel molecule and oxygen molecule distance is also just closer to burning velocity
Just faster；Temperature can allow gas molecule motion speed to be accelerated, and fuel molecule and oxygen molecule are easier to interact, and this is just
Mixed gas is allowed to be easier to light.And less combustion space can complete to burn faster, combustion process is accelerated and burnt
Fully, the power performance and efficiency of combustion of engine are not only increased, also improves economy, is also reduced because of oil gas burning not
Fully produce dusty gas.
It is further preferred that the lower chamber of the minor air cell is provided with a cushion block, the lower surface of the cushion block is the same as the gas
The lower surface of cylinder cap is concordant；The cushion block is provided with groove, and the upper chamber shape of the groove and the minor air cell is integral
Minor air cell；The swirl channel is arcuate channel, and it includes first end and the second end；The first end of the swirl channel and institute
State groove connection；Second end of the swirl channel connects with the guiding gutter of the main chamber.
In the technical program, engine minor air cell cushion block bottom is provided with the passage of arch, for connecting minor air cell and master
Combustion chamber.The area that the passage of arch contacts quantitative fluidization tower and mist of oil maximizes, and is advantageous to the mixing of gas and mist of oil.Make
Obtaining strength of vortex in minor air cell strengthens, and air-flow utilization rate improves at minor air cell dead angle, so as to offset because increasing channel cross-sectional area band
The negative effect come.So that the oily beam that fuel injector sprays has the sufficient time to be mixed with the swirl gas of minor air cell by nozzle opening
Close, obtain more uniform gaseous mixture, improve efficiency of combustion, improve economy, reduce discharge, reduce Opening pressure, also improve
The reliability of fuel injector.
It is further preferred that the second end of the swirl channel is adapted with the guiding gutter；And its inwall is led with described
The side wall rounding off of chute；And/or the groove is connected with the main chamber by starting aperture, the startup aperture
Set away from the swirl channel.
In the technical program, first, the setting of the rounding off of guiding gutter and arcuate channel, avoid mixed in minor air cell
Closing gas causes its dynamic loss of energy directly into the end face of piston so that gaseous mixture can smoothly enter main burning along its curved surface
Room, the gas-flow resistance of gaseous mixture is reduced, reduce the kinetic energy loss of gaseous mixture direct collision, formed in the presence of descent of piston
Strong tumble flow effect, so as to improve air-flow rolling effect；Secondly because the guide functions of guiding gutter so that the air-flow of gaseous mixture
What is more smoothed out flows to valve pit, so as to substantially reduce flow losses, improves the starting performance of engine.Pad minor air cell
Starting aperture is additionally provided with block；Mist of oil has fraction to enter main chamber by starting aperture from fuel injector course of injection
In, be advantageous to the startability of engine.
It is further preferred that the upper chamber of the minor air cell is hemispherical；And/or the cross-section structure of the groove is
Pyramidal structure, its cone angle scope are 25 ° -50 °.
In the technical program, the upper chamber of the minor air cell of engine is hemispherical, the cone being provided with minor air cell's cushion block
The flat space of shape, minor air cell's cushion block is installed on cylinder cap, two spaces have collectively constituted minor air cell；Such a minor air cell is favourable
Enter to be formed in minor air cell in gas and be vortexed and be sufficiently mixed with mist of oil.
A kind of engine and its piston with turbulence chamber provided by the utility model, can bring following at least one
Kind beneficial effect：
1st, in the utility model, the combustion chamber on piston end surface is collectively forming by valve hole and guiding gutter, and valve cheats a side
Face is used for the mixing of tissue oil gas as a part for combustion chamber, the compression ratio of piston (i.e. engine) is improved, due to pressure
Rise can allow the density of gas to become big, and intermolecular distance also just diminishes, and such fuel molecule and oxygen molecule distance is also just more
Closely, burning velocity is just faster；Temperature can allow gas molecule motion speed to be accelerated, and fuel molecule and oxygen molecule are easily mutual
Phase separation, this just allows mixed gas to be easier to light.And less combustion space can complete to burn faster, combustion process
Accelerate and burning be abundant, not only increase the power performance and efficiency of combustion of engine, also improve economy, also reduce because
Oil gas burning is insufficient and produces dusty gas；And wall of the guiding gutter away from valve hole side is (i.e. with connecting minor air cell and master
The wall that the swirl channel of combustion chamber is connected) it is curved surface, first, the gaseous mixture that the setting of guiding gutter is avoided in minor air cell is straight
Connect the end face for pouring piston and cause its dynamic loss of energy so that gaseous mixture can smoothly enter main chamber along its curved surface, drop
The low gas-flow resistance of gaseous mixture, so as to improve air-flow rolling effect；Secondly because the guide functions of guiding gutter so that gaseous mixture
Air-flow more smooth out flow to valve pit, so as to substantially reduce flow losses, improve the starting performance of engine.Cause
This, the utility model, changes the gas flow flowed out from minor air cell and the gaseous mixture of combustion chamber is flowed to by swirl channel, makes
The vortex gas flow circumferentially operated along piston must have both been produced into the gaseous mixture of combustion chamber, at the same it is movable along piston axial operation
Tumble flow air-flow so that gaseous mixture mixes more fully and rapid, is advantageous to complete, the homogenous combustion of combustion gas, improves the thermal efficiency,
Reduce exhaust emissions simultaneously.
2nd, in the utility model, the bottom surface of guiding gutter is obliquely installed so that gaseous mixture can be along the guiding side of guiding gutter
To flowing so that gaseous mixture more easily produces the vortex gas flow circumferentially operated along piston, so that gaseous mixture mixes more
Add abundant and rapid, be advantageous to complete, the homogenous combustion of combustion gas, improve the thermal efficiency, while reduce exhaust emissions.
3rd, in the utility model, piston end surface is provided with the pit and guiding gutter of inlet and outlet door.Valve pit on the one hand be
The effect of valve is avoided, on the other hand the part as combustion chamber is used for the mixing of tissue oil gas.Guiding gutter is logical close to vortex
The part in road is done in the arc-shaped, is gradually changed direction from guiding gutter of the gaseous mixture along arc of swirl channel outflow, is reduced
The kinetic energy loss of gaseous mixture direct collision, strong tumble flow effect is formed in the presence of descent of piston.Guiding gutter and inlet and outlet
Sector is made in the part of door pit linking, is advantageous to mixed airflow and is radiated to inlet and outlet door, and is drawn by inlet and outlet door pit
Stream forms two bursts of tumble flows, strengthens the tumble flow effect of gaseous mixture.
4th, in the utility model, the combustion chamber on the end face by piston of engine, which changes, to be flowed out and leads to from minor air cell
Cross the gas flow that swirl channel flows to the gaseous mixture of combustion chamber so that the gaseous mixture into combustion chamber had both produced the week along piston
To the vortex gas flow of operating, while tumble flow air-flow of the activity along piston axial operation so that gaseous mixture mix more fully and
Rapidly, be advantageous to complete, the homogenous combustion of combustion gas, improve the thermal efficiency, while reduce exhaust emissions.
5th, in the utility model, the upper chamber of the minor air cell of engine is hemispherical, is provided with minor air cell's cushion block
The space of conical flat-bottomed, minor air cell's cushion block is installed on cylinder cap, two spaces have collectively constituted minor air cell；Such a minor air cell has
Enter to be formed in minor air cell beneficial to gas and be vortexed and be sufficiently mixed with mist of oil.
6th, in the utility model, engine minor air cell cushion block bottom is provided with the passage of arch, for connect minor air cell and
Main chamber.The area that the passage of arch contacts quantitative fluidization tower and mist of oil maximizes, and is advantageous to the mixing of gas and mist of oil.
So that strength of vortex strengthens in minor air cell, air-flow utilization rate improves at minor air cell dead angle, so as to offset because increasing channel cross-sectional area
The negative effect brought.So that the oily beam that fuel injector sprays has the sufficient time to be mixed with the swirl gas of minor air cell by nozzle opening
Close, obtain more uniform gaseous mixture, improve efficiency of combustion, improve economy, reduce discharge, reduce Opening pressure, also improve
The reliability of fuel injector.And starting aperture is additionally provided with minor air cell's cushion block；Mist of oil has small portion from fuel injector course of injection
Divide and entered by starting aperture in main chamber, be advantageous to the startability of engine.
Brief description of the drawings
Below by a manner of clearly understandable, preferred embodiment is described with reference to the drawings, to the hair with turbulence chamber
Motivation and its above-mentioned characteristic, technical characteristic, advantage and its implementation of piston are further described.
Fig. 1 is a kind of main view schematic diagram of embodiment of the utility model piston；
Fig. 2 is Fig. 1 cross-sectional view；
Fig. 3 is a kind of cross-sectional view of embodiment of the utility model engine.
Drawing reference numeral explanation：
1000. pistons, 1100. main chambers, 1110. guiding gutters, 1111. bottom surfaces, 1112. the first side walls, 1113. second
Side wall, 1114. the 3rd side walls, 1115. the 4th side walls, 1116. the 5th side walls, 1117. the 6th side walls, 1118. first,
1119. second, 1120. valve pits, 1121. inlet valve pits, 1122. exhaust valve pits, 1123. air inlet side walls, 1124.
Side wall is vented, 2000. cylinder head, 2100. minor air cells, 2110. cushion blocks, 2111. grooves, 2112. swirl channels, 2113. start
Aperture, 2200. nozzle openings.
Embodiment
In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, accompanying drawing will be compareed below
Illustrate specific embodiment of the present utility model.It should be evident that drawings in the following description are only of the present utility model one
A little embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these
Accompanying drawing obtains other accompanying drawings, and obtains other embodiments.
To make simplified form, the part related to the utility model is only schematically show in each figure, they are simultaneously
Its practical structures as product is not represented.In addition, so that simplified form readily appreciates, have in some figures identical structure or
The part of function, only symbolically depicts one of those, or has only marked one of those.Herein, "one" is not
" only this " only is represented, the situation of " more than one " can also be represented.Herein, it is living because minor air cell is subsidiary combustion chamber
Combustion chamber on the end face of plug is main chamber, and therefore, for convenience of description, main chamber herein is combustion chamber.
In embodiment one, as Figure 1-3, a kind of piston, including：Piston body (does not indicate) in figure, the end of piston body
Face is provided with guiding gutter 1110 and valve pit 1120；Guiding gutter 1110 and valve pit 1120 are oppositely arranged and form combustion chamber；
Distalmost end side wall of the guiding gutter 1110 away from the side of valve pit 1120 is curved surface.In the present embodiment, on the end face of piston 1000
Combustion chamber collectively formed by valve hole and guiding gutter 1110, on the one hand valve hole can avoid the valve of engine, on the one hand
A part as combustion chamber is used for the mixing of tissue oil gas, improves the compression ratio of piston 1000 (i.e. engine), due to pressure
Power rise can allow the density of gas to become big, and intermolecular distance also just diminishes, and such fuel molecule and oxygen molecule distance is also
Closer to, burning velocity just faster；Temperature can allow gas molecule motion speed to be accelerated, and fuel molecule and oxygen molecule are easier
Interact, this just allows mixed gas to be easier to light.It is burned and less combustion space can complete to burn faster
Journey is accelerated and burning is abundant, not only increases the power performance and efficiency of combustion of engine, also improves economy, also reduce
Dusty gas is produced because oil gas burning is insufficient；And wall of the guiding gutter 1110 away from valve hole side is (i.e. with connecting vortex
The wall that room 2100 is connected with the swirl channel 2112 of main chamber 1100) it is curved surface, first, the setting of guiding gutter 1110 is kept away
Gaseous mixture in Mian Liao minor air cells 2100 causes its dynamic loss of energy directly into the end face of piston 1000 so that gaseous mixture energy
It is enough smoothly to enter main chamber 1100 along its curved surface, the gas-flow resistance of gaseous mixture is reduced, reduces the dynamic of gaseous mixture direct collision
It can be lost, strong tumble flow effect is formed in the presence of piston 1000 is descending, so as to improve air-flow rolling effect；Secondly because
The guide functions of guiding gutter 1110 so that what the air-flow of gaseous mixture more smoothed out flows to valve pit 1120, so as to greatly reduce
Flow losses, improve the starting performance of engine.Also so that the gaseous mixture into combustion chamber had both been produced along piston 1000
The vortex gas flow circumferentially operated, while tumble flow air-flow of the activity along the axial operation of piston 1000 so that gaseous mixture mixes more
It is fully and rapid, be advantageous to complete, the homogenous combustion of combustion gas, improve the thermal efficiency, while reduce exhaust emissions.Environmental protection, product
Pole has responded China's state basic policy.
What deserves to be explained is in actual applications, guiding gutter 1110 be with connect minor air cell 2100 (i.e. subsidiary combustion chamber) and
What the passage (swirl channel 2112 i.e. herein) of main chamber 1100 (i.e. combustion chamber) was conducted, therefore, guiding gutter 1110
Curved surface (i.e. the first side wall 1112) and swirl channel 2112 between rounding off, i.e., swirl channel 2112 is away from the axle of piston 1000
The inwall of line side is located on same curved surface with the first side wall 1112, and the side wall of guiding gutter 1110 and swirl channel 2112 is interior
The shape and size that wall preferably enters on outgoing direction along uprush are identical, therefore the swirl channel of different types of engine
When 2112 shapes are different, then the guiding gutter 1110 on the end face of piston 1000 should be the shape being adapted with swirl channel 2112
Shape.
In embodiment two, as Figure 1-3, on the basis of embodiment one, footpath of the first side wall 1112 along piston body
Arc radius scope to direction (i.e. the extension direction of the end face of piston 1000) is 5-30mm, and the first side wall 1112 is along piston body
The arc radius scope of axis direction be 5-60mm, i.e., the first side wall 1112 can be with the sphere curved surface of Radius or by difference
The round and smooth large curved surface of the small curved surface composition of radius, the curved surface composition of preferably two to four different radiis, certainly due to piston body
Mismachining tolerance, the first side wall 1112 of guiding gutter 1110 may not be same footpath curved surface, fall within the protection of the application
Scope.And the angular range between the bottom surface 1111 of guiding gutter 1110 and the end face of piston body is 1-2 °, bottom surface 1111 and piston
The value of distance ranges preferably from 1-2mm between the end face of body, in order to allow guiding gutter 1110 to form stronger eddy current effect, because
Distance of the bottom surface 1111 of this guiding gutter 1110 apart from the end face of piston body need not set it is larger, can be true according to practical effect
It is fixed, the depth of guiding gutter 1110 (the distance between end face and bottom surface 1111 for piston body) preferably by the first side wall 1112 to
4th side wall 1115 gradually becomes shallower as.The width range of guiding gutter 1110 is 10-30mm, in actual applications, guiding gutter 1110
Width range and length range should determine that is, various sizes of vortex is logical with the size of the swirl channel 2112 set corresponding thereto
The corresponding various sizes of guiding gutter 1110 in road 2112；The bottom surface (not indicated in figure) and the end face of piston body of valve pit 1120 are put down
Row is set；The side wall of guiding gutter 1110 is connected with the side wall rounding off of valve pit 1120, i.e. the 3rd side of guiding gutter 1110
The 1124 round and smooth connection of exhaust side wall of wall 1114 and exhaust valve pit 1122, the 5th side wall 1116 and inlet valve of guiding gutter 1110
The 1123 round and smooth connection of air inlet side wall of pit 1121.It is worthy of note that the second sidewall 1113 of guiding gutter 1110, the 3rd side wall
1114th, the 4th side wall 1115, the 5th side wall 1116 and the 6th side wall 1117 can be curved surface.
In embodiment three, as Figure 1-3, on the basis of embodiment one or two, valve pit 1120 includes air inlet
Door pit 1121 and exhaust valve pit 1122；Guiding gutter 1110 includes first 1118 and second 1119 be connected with each other, leads
First 1118 of chute 1110 is away from valve pit 1120, and the structure that takes the shape of the letter U, and its blind end is the distalmost end of guiding gutter 1110
Side wall (i.e. the first side wall 1112)；Second 1119 of guiding gutter 1110 includes first set with inlet valve pit 1121 with footpath
Sub-portion (does not indicate) in figure, the second sub-portion (not indicated in figure) set with exhaust valve pit 1122 with footpath, and located at air inlet
The 3rd sub-portion (not indicated in figure) between door pit 1121 and exhaust valve pit 1122.First 1118 of guiding gutter 1110 by
The first side wall 1112, the side wall 1117 of second sidewall 1113 and the 6th are enclosed to set and formed；Second 1119 by the 3rd side wall the 1114, the 4th
Side wall 1115, the 5th side wall 1116, inlet valve pit 1121 and exhaust valve pit 1122 enclose and set to be formed；Wherein second sidewall 1113
With the 3rd side wall 1114, the 5th side wall 1116 and the 6th side wall 1117, the 4th side wall 1115 and air inlet side wall 1123 and exhaust side
Wall 1124 is connected by circular arc chamfering, and the connection radius of its circular arc chamfering is 3-10mm, specific circular arc chamfering radius
It can be configured according to the specific size of inlet valve pit 1121, air outlet valve pit and swirl channel 2112.
In example IV, as Figure 1-3, a kind of engine with turbulence chamber, including：Main chamber 1100
With minor air cell 2100；Main chamber 1100 is arranged between piston 1000 and cylinder head 2000, and piston 1000 is above-mentioned any institute
The piston 1000 stated；Minor air cell 2100 is arranged in cylinder head 2000, and is connected with nozzle opening 2200；Minor air cell 2100 and master
Combustion chamber 1100 is communicated by swirl channel 2112；Guiding gutter 1110 and the position of swirl channel 2112 on the end face of piston 1000
Put correspondingly.In the present embodiment, because the main chamber 1100 on the end face of piston 1000 is by valve hole and 1110 common shape of guiding gutter
Into main chamber 1100 changes the mixing flowed out from minor air cell 2100 and main chamber 1100 is flowed to by swirl channel 2112
The gas flow of gas so that the gaseous mixture into main chamber 1100 had both produced the vortex gas circumferentially operated along piston 1000
Stream, while tumble flow air-flow of the activity along the axial operation of piston 1000 so that gaseous mixture mixes more fully and rapid, is advantageous to
Complete, the homogenous combustion of combustion gas, the thermal efficiency is improved, while reduce exhaust emissions.And on the one hand valve hole can be used for avoiding valve,
On the other hand the part as main chamber 1100 is used for the mixing of tissue oil gas, improves piston 1000 (i.e. engine)
Compression ratio, because pressure rise can allow the density of gas to become big, intermolecular distance also just diminishes, such fuel molecule and oxygen
Molecule distance also just closer to, burning velocity just faster；Temperature can allow gas molecule motion speed to be accelerated, fuel molecule and oxygen
Qi leel is easier to interact, and this just allows mixed gas to be easier to light.And less combustion space can be complete faster
Into burning, combustion process is accelerated and burning is abundant, not only increases the power performance and efficiency of combustion of engine, also improve through
Ji property, also reduce and produce dusty gas because oil gas burning is insufficient.
In embodiment five, as Figure 1-3, on the basis of example IV, the lower chamber of minor air cell 2100 is provided with
One cushion block 2110, the lower surface of cushion block 2110 are concordant with the lower surface of cylinder head 2000；Cushion block 2110 is provided with groove 2111, recessed
The integral minor air cell 2100 of the upper chamber shape of groove 2111 and minor air cell 2100；Swirl channel 2112 is arcuate channel, bag
Include first end and the second end；The first end of swirl channel 2112 connects with groove 2111；Second end of swirl channel 2112 and master
The guiding gutter 1110 of combustion chamber 1100 connects, and the bent body direction of swirl channel 2112 towards the wall of minor air cell 2100 away from minor air cell
2100 centers.Second end of swirl channel 2112 is adapted with guiding gutter 1110, i.e. the width range and length of guiding gutter 1110
Scope should determine that various sizes of swirl channel 2112 corresponds to different chis with the size of the swirl channel 2112 set corresponding thereto
Very little guiding gutter 1110；And the side wall rounding off of the inwall at the second end of swirl channel 2112 and guiding gutter 1110；Groove
2111 are also connected with main chamber 1100 by starting aperture 2113, are started aperture 2113 and are set away from swirl channel 2112, are opened
Dynamic aperture 2113 is preferably flared structure, and its flared end is set close to minor air cell 2100, and its slot end is close to main chamber
1100 are set, and start aperture 2113 and swirl channel 2112 is provided separately within cushion block 2110, and successively away from the axle of piston 1000
Line direction is set, and is respectively communicated with minor air cell 2100 and main chamber 1100.Preferably, the upper chamber of minor air cell 2100 is half
It is spherical；The cross-section structure of groove 2111 is pyramidal structure, and its cone angle scope is 25 ° -50 °, and top is spherical and bottom is taper
The minor air cell 2100 in space is advantageous to gas and is vortexed into formation in minor air cell 2100 and is sufficiently mixed with mist of oil.
It should be noted that above-described embodiment can independent assortment as needed.Described above is only of the present utility model
Preferred embodiment, it is noted that for those skilled in the art, do not departing from the utility model principle
On the premise of, some improvements and modifications can also be made, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (10)
- A kind of 1. piston, it is characterised in that including：Piston body, the end face of the piston body are provided with guiding gutter and valve pit；The guiding gutter and the valve pit are oppositely arranged and form combustion chamber；Distalmost end side wall of the guiding gutter away from the valve pit side is curved surface.
- 2. piston according to claim 1, it is characterised in that：The arc radius scope of radial direction of the curved surface along the piston body is 5-30mm.
- 3. piston according to claim 1 or 2, it is characterised in that：The arc radius scope of axis direction of the curved surface along the piston body is 5-60mm；And/orAngular range between the bottom surface of the guiding gutter and the end face of the piston body is 1-2 °；And/orThe width range of the guiding gutter is 10-30mm；And/orThe bottom surface and the end face of the piston body of the valve pit be arranged in parallel；And/orThe guiding gutter and the round and smooth connection of valve pit.
- 4. piston according to claim 1 or 2, it is characterised in that：The valve pit includes inlet valve pit and exhaust valve pit.
- 5. piston according to claim 4, it is characterised in that：The guiding gutter includes first and second be connected with each other,First of the guiding gutter is away from the valve pit, and the structure that takes the shape of the letter U, its blind end are farthest for the guiding gutter Side wall；Second of the guiding gutter includes the first sub-portion set with the inlet valve pit with footpath, with the exhaust valve pit The second sub-portion set with footpath, and the 3rd sub-portion between the inlet valve pit and the exhaust valve pit.
- 6. piston according to claim 5, it is characterised in that：The side wall of first of the guiding gutter is that circular arc chamfering connects with the side wall of second of the guiding gutter, and its circular arc falls The connection radius at angle is 3-10mm.
- A kind of 7. engine with turbulence chamber, it is characterised in that including：Main chamber and minor air cell；The main chamber is arranged between piston and cylinder head, and the piston is described in the claims 1-6 any one Piston；The minor air cell is arranged in cylinder head, and is connected with nozzle opening；The minor air cell is communicated with the main chamber by swirl channel；Guiding gutter and the position correspondence of the swirl channel on the end face of the piston.
- 8. the engine according to claim 7 with turbulence chamber, it is characterised in that：The lower chamber of the minor air cell is provided with a cushion block, and the lower surface of the cushion block is concordant with the lower surface of the cylinder head；The cushion block is provided with groove, the integral minor air cell of the upper chamber shape of the groove and the minor air cell；The swirl channel is arcuate channel, and it includes first end and the second end；The first end of the swirl channel connects with the groove；Second end of the swirl channel connects with the guiding gutter of the main chamber.
- 9. the engine according to claim 8 with turbulence chamber, it is characterised in that：Second end of the swirl channel is adapted with the guiding gutter；And the round and smooth mistake of side wall of its inwall and the guiding gutter Cross；And/orThe groove is connected with the main chamber by starting aperture, and the startup aperture is set away from the swirl channel.
- 10. the engine with turbulence chamber according to claim 8 or claim 9, it is characterised in that：The upper chamber of the minor air cell is hemispherical；And/orThe cross-section structure of the groove is pyramidal structure, and its cone angle scope is 25 ° -50 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720631916.6U CN206860306U (en) | 2017-06-02 | 2017-06-02 | A kind of engine and its piston with turbulence chamber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720631916.6U CN206860306U (en) | 2017-06-02 | 2017-06-02 | A kind of engine and its piston with turbulence chamber |
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| Publication Number | Publication Date |
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| CN206860306U true CN206860306U (en) | 2018-01-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211715A (en) * | 2020-12-03 | 2021-01-12 | 潍柴动力股份有限公司 | Combustion chamber and gas engine |
| CN113982775A (en) * | 2021-11-01 | 2022-01-28 | 安徽航瑞航空动力装备有限公司 | Engine piston and two-stroke compression-ignition type aviation piston engine |
-
2017
- 2017-06-02 CN CN201720631916.6U patent/CN206860306U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211715A (en) * | 2020-12-03 | 2021-01-12 | 潍柴动力股份有限公司 | Combustion chamber and gas engine |
| CN112211715B (en) * | 2020-12-03 | 2021-05-18 | 潍柴动力股份有限公司 | Combustion chamber and gas engine |
| CN113982775A (en) * | 2021-11-01 | 2022-01-28 | 安徽航瑞航空动力装备有限公司 | Engine piston and two-stroke compression-ignition type aviation piston engine |
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Granted publication date: 20180109 Termination date: 20210602 |