CN101012770A - Spherical motorcycle engine combustion chamber - Google Patents
Spherical motorcycle engine combustion chamber Download PDFInfo
- Publication number
- CN101012770A CN101012770A CNA2007100566762A CN200710056676A CN101012770A CN 101012770 A CN101012770 A CN 101012770A CN A2007100566762 A CNA2007100566762 A CN A2007100566762A CN 200710056676 A CN200710056676 A CN 200710056676A CN 101012770 A CN101012770 A CN 101012770A
- Authority
- CN
- China
- Prior art keywords
- piston
- space
- cylinder head
- spherical
- pit
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a combustor of ellipsoidal motorcycle engine, which is constituted by the space between the cylinder cover and the piston. There are intake and outtake channels set at two ends of cylinder cover. The intake channel is high-level tangent air channel and the outtake channel is screw curved air channel. The top face of piston is cone-like convex face. On the cone-like convex face two concave surfaces are set, which are intersected with the cone-like convex face. The space formed by the first concave surface is the collision prevention pit of intake door and the space formed by the second concave surface is the collision prevention pit of outtake door. The space with petal-shape at the side face is formed by the bottom of cylinder cover, spherical concave pit and ellipsoidal pit, which are communicated from the top to the bottom. The space with petal-shape at the side face of cylinder cover is corresponding to the cone-like convex face at the top of piston. After the piston is assembled with the cylinder cover, the ellipsoidal combustor with petal-shape squish flow face is formed by the cone-like convex face on the piston and the space at the side face of cylinder cover. The combustor can strengthen the air flow disturbance of mixed air very well. It can improve burning and decrease HC discharge.
Description
Technical field
The present invention relates to a kind of engine chamber, relate in particular to a kind of motorcycle engine combustion chamber.
Background technique
The firing chamber of motor is the critical component of motor, pot type piston is generally flat-head type, the firing chamber that forms between itself and the cylinder head is generally the similar space of rule of hanging bell shape, this piston and The combustion chamber generally mostly are the spherical combustion chamber on the cylinder head, its simple shape, be difficult for making piston to cooperate well with the cylinder head wall, be formed with the turbulent motion that is beneficial to the better burning of mixed gas, how to make engine chamber can strengthen near the flow perturbation of the mixed gas of spark plug well, quicken flame propagation, improve burning, to reduce discharging, this has become a critical technical barrier of current research and exploitation motorcycle engine combustion chamber.By experimental results demonstrate, change the geometrical shape of the bags and the configuration relation of firing chamber and other associated components, can significantly improve the tissue of mixed gas in the cylinder, improve the combustion performance of motor, therefore, need reasonably each relevant components part of designed combustion chamber.
Summary of the invention
Piston and the difficult cooperation well of The combustion chamber that the present invention exists for solving the prior art motorcycle engine combustion chamber, be formed with this technical problem of turbulent motion that is beneficial to the better burning of mixed gas, a kind of spherical motorcycle engine combustion chamber is provided, described elliposoidal firing chamber can be strengthened near the flow perturbation of the mixed gas of spark plug well, quicken flame propagation, improve burning, reduce discharging.
In order to solve the problems of the technologies described above, the technological scheme that the present invention is implemented is: this spherical motorcycle engine combustion chamber is made of the space between cylinder head and piston, and two ends are provided with intake duct and air outlet flue in the described cylinder head; The end face of described piston is the frustoconic shape convex surface, and described frustoconic shape convex surface is provided with the concave curvatures that two difference are cut friendship with it, and the space that first concave curvatures forms is intake valve collision prevention hole, and the space that second concave curvatures forms is exhaust valve collision prevention hole; It is petal space that the bottom surface of described cylinder head has been formed the side by spherical pit that passes through mutually up and down successively and elliposoidal pit; Described cylinder head upper side is that petal space is corresponding with the position of above-mentioned piston head frustoconic shape projecting surface; After described piston and the cylinder head assembling, the space that frustoconic shape projecting surface on the described piston and described cylinder head upper side are constitutes the elliposoidal firing chamber of petal crowded stream interface.
Spherical motorcycle engine combustion chamber of the present invention, wherein: described intake duct is high-order tangential air flue, and described air outlet flue is the curved air flue with helix feature, and described inlet and outlet road cooperates, so that give full play to the inflation effect, guarantee the smooth and easy supply and the exhaust of mixed gas; Be provided with the cooling water chamber that matches with the elliposoidal firing chamber above the described firing chamber, in order to satisfying the cooling action of the big aeration quantity of spherical combustion chamber, thereby reduce heat load, improve combustion efficiency.
Compared with prior art, the invention has the beneficial effects as follows: elliposoidal of the present invention firing chamber can be strengthened near the flow perturbation of the mixed gas of spark plug well, quickens flame propagation, improves burning, reduces and discharges.
Description of drawings
Fig. 1-the 1st, the plan view of piston in the spherical motorcycle engine combustion chamber of the present invention;
Fig. 1-2 is the B-B sectional view of piston as shown in Fig. 1-1;
Fig. 1-the 3rd, the A-A sectional view of piston as shown in Fig. 1-1;
Fig. 1-the 4th, the stereogram of piston in the spherical motorcycle engine combustion chamber of the present invention;
Fig. 2-the 1st, the worm's eye view of cylinder head in the spherical motorcycle engine combustion chamber of the present invention;
Fig. 2-the 2nd, the C-C sectional view of cylinder head shown in Fig. 2-1;
Fig. 2-the 3rd, the D-D sectional view of cylinder head shown in Fig. 2-1;
Fig. 2-the 4th, the E-E sectional view of cylinder head shown in Fig. 2-1;
Fig. 2-the 5th, the stereogram of cylinder head in the invention spherical motorcycle engine combustion chamber;
Fig. 2-6,2-7,2-8 be inlet and outlet road as shown in Fig. 2-3 the master, bow, left three-view diagram;
Fig. 3-the 1st, the stereogram among the present invention after the assembling of cylinder head and piston;
Fig. 3-the 2nd, the fundamental diagram of spherical motorcycle engine combustion chamber of the present invention.
Be the explanation of main position reference character in the Figure of description below:
10-piston 11-frustoconic shape convex surface 12-end face
14-intake valve collision prevention hole, 13-exhaust valve collision prevention hole 20-cylinder head
21-elliposoidal pit 22-spherical pit 23-suction port
24-suction valve cone mouth 25-relief opening 26-exhaust valve seat mouth
27-spark-plug hole 28-cooling water chamber 30-firing chamber
The petal crowded stream interface 32-squish turbulent flow 33-frustoconic shape of 31-is squeezed stream interface
41-intake duct 42-air outlet flue
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
As everyone knows, that forms the firing chamber not only comprises engine cylinder cap and piston two-part, certainly also comprise the cylinder block that surrounds the firing chamber etc., but because all engine chambers all should be made up of component such as the cylinder block that matches with piston diameter, piston rings, different motors has different configurations, mainly be at the critical piece of forming the elliposoidal firing chamber, the i.e. novel piston and the cylinder head of a pair of cooperation among the present invention.
Respectively the piston of composition motorcycle engine combustion chamber of the present invention and the structure of cylinder head are specified below in conjunction with accompanying drawing.
Shown in 1-1 to Fig. 1-4, the end face 12 of the piston 10 of motorcycle engine combustion chamber of the present invention is a frustoconic shape convex surface 11, described frustoconic shape convex surface 11 be provided with two respectively with the concave curvatures of 11 sections friendships of described frustoconic shape convex surface, the space that first concave curvatures forms is intake valve collision prevention hole 14, the space that second concave curvatures forms is exhaust valve collision prevention hole 13, as its name suggests, when the effect in described intake valve collision prevention hole 14 is used for piston 10 and cylinder head 20 exactly, in order to avoid the end face of piston 10 and the suction valve cone on the cylinder head 20 are collided; In like manner, the effect in exhaust valve collision prevention hole 13 similarly.
As Fig. 2-1 to shown in Fig. 2-5, the structure of cylinder head 20 is among the present invention: comprise the intake and exhaust port 41 and 42 on the cylinder cap, and spark-plug hole 27, be provided with spherical pit 22 in described cylinder head 20 bottom surfaces, as for this spherical pit 22 specifically is the spheroidal pit, or approximate circle spherical pit, or the round platform pit all can, the basis of described spherical pit 22 bottom surfaces is provided with elliposoidal pit 21, when above-mentioned spherical pit 22 of processing and elliposoidal pit 21, usually after adopting processing elliposoidal pit 21, again this elliposoidal pit is carried out 21 chamfered and get final product, chamfering tool is the spheroidal pit according to the geometrical shape of spherical pit, or approximate circle spherical pit, or difference such as round platform pit and selecting.Above-mentioned to have formed the side by spherical pit 22 with the elliposoidal pit 21 that passes through mutually with it be petal cavity, that is to say, the concrete shape of chamfering is also not really strict, so long as it is just passable to form petal crowded stream interface 31 on the inwall of firing chamber 30.
Shown in Fig. 3-1 and Fig. 3-2, the space that forms between cavity that the elliposoidal pit 21 of above-mentioned cylinder head 20 bottom surfaces and chamfering form and the engine piston 10 frustoconic shape convex surfaces 11 is elliposoidal firing chamber 30, and the side of this firing chamber 30 forms petal crowded stream interface 31.
Shown in Fig. 2-6, Fig. 2-7 and Fig. 2-8,20 intake duct 41 is high-order tangential air flue in the described cylinder head, air outlet flue in the described cylinder head of described intake duct is the curved air flue with helix feature, shown in Fig. 2-3 and Fig. 2-5, described intake duct 41 leads to suction valve cone mouth 24 on 30 walls of firing chamber by suction port 23, described air outlet flue 42 leads to exhaust valve seat mouth 26 on 30 walls of firing chamber by relief opening 25, described inlet and outlet road 41 and 42 cooperates, charging efficiency can be given full play to, thereby the smooth and easy supply and the exhaust of mixed gas can be guaranteed.Therefore, design the inlet and outlet road 41 and 42 in the above-mentioned cylinder head, no matter will decide as the case may be, for example: the diameter that can increase the inlet and outlet road as far as possible in key elements such as its form, shape and sizes, also can increase the air inlet charge of motor, and then improve the power of motor.
In addition, owing to the cylinder head 20 among the present invention matches with elliposoidal firing chamber 30, therefore, in order to satisfy the cooling action of elliposoidal firing chamber 30 big aeration quantitys; Be positioned at described cylinder head elliposoidal pit 21 above be provided with the cooling water chamber 28 that matches with elliposoidal firing chamber 30, will consider factors such as the requirement of cylinder head spatial arrangement, intake and exhaust port shape and combustion-chamber shape when designing this cooling water chamber 28, this is that those skilled in the art know.
Describe the action principle of spherical motorcycle engine combustion chamber of the present invention below in detail.
Shown in Fig. 3-1 and Fig. 3-2, after cylinder head among the present invention 20 and piston 10 cooperation installations, round platform 1 shape convex surface 1 on piston 10 end faces be positioned at cylinder head 20 grades around it (such as: component such as cylinder block and piston ring) formed spheroid shape firing chamber 30, the action principle of spherical motorcycle engine combustion chamber of the present invention is: at intake stroke, fresh charge from suction port 23 under the descending suction function of piston 10, enter cylinder, and the inflammable mixture that enters cylinder forms the squish turbulent flow 32 with elliposoidal firing chamber 30 characteristics in compression stroke under the acting in conjunction of crowded stream interface 33 of piston frustoconic shape and cylinder head 20 petal crowded stream interfaces 31.That is, when piston 10 is up, under the acting in conjunction of piston circular convex 11 and cylinder head 20 firing chambers, form strong squish eddy current.
The typical stream (Squish) that squeezes is meant that near top dead center air is by horizontal (or the radially) gas motion that flows to cylinder axis around the cylinder.What elliposoidal firing chamber 30 squish that are made of cylinder head 20 in the invention and corresponding piston 10 flowed forms shown in Fig. 3-1 and Fig. 3-2, that is: piston 10 is up, the corresponding crowded stream interface 31 of piston-top surface and cylinder head is pushed air and is laterally reached radial motion, shown in the arrow among Fig. 3-2, the air motion in elliposoidal firing chamber 30 had both been strengthened in such motion, help again near spark plug, being formed with and be beneficial to the micro swirl that fiery karyomorphism becomes to grow up, and the large scale turbulent flow that in the flame propagation process, helps flame propagation, thereby raising rate of flame propagation, meanwhile, because strong wall gas flow has swept away a large amount of HC attached to combustion chamber wall surface, so the discharging of motor HC also can reduce greatly.This shows, can obviously improve burning by the cylinder head among the present invention with the crowded stream combustion system of the corresponding motor that piston constituted, and effectively reduce the discharging of HC.
Although in conjunction with the accompanying drawings the preferred embodiments of the present invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away under the scope situation that aim of the present invention and claim protect, can also make a lot of forms, these all belong within the protection of the present invention.
Claims (3)
1. a spherical motorcycle engine combustion chamber is made of the space between cylinder head and piston, and two ends are provided with intake duct and air outlet flue in the described cylinder head; It is characterized in that:
The end face of described piston is the frustoconic shape convex surface, and described frustoconic shape convex surface is provided with the concave curvatures that two difference are cut friendship with it, and the space that first concave curvatures forms is intake valve collision prevention hole, and the space that second concave curvatures forms is exhaust valve collision prevention hole;
It is petal space that the bottom surface of described cylinder head has been formed the side by spherical pit that passes through mutually up and down successively and elliposoidal pit;
Described cylinder head upper side is that petal space is corresponding with the position of above-mentioned piston head frustoconic shape projecting surface; After described piston and the cylinder head assembling, the space that frustoconic shape projecting surface on the described piston and described cylinder head upper side are constitutes the elliposoidal firing chamber of petal crowded stream interface.
2. spherical motorcycle engine combustion chamber according to claim 1, it is characterized in that: described intake duct is high-order tangential air flue, described air outlet flue is the curved air flue with helix feature, described inlet and outlet road cooperates, so that give full play to the inflation effect, guarantee the smooth and easy supply and the exhaust of mixed gas.
3. spherical motorcycle engine combustion chamber according to claim 1, it is characterized in that: be provided with the cooling water chamber that matches with the elliposoidal firing chamber above the described firing chamber, in order to satisfying the cooling action of the big aeration quantity of spherical combustion chamber, thereby reduce heat load, improve combustion efficiency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100566762A CN100460637C (en) | 2007-01-31 | 2007-01-31 | Spherical motorcycle engine combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100566762A CN100460637C (en) | 2007-01-31 | 2007-01-31 | Spherical motorcycle engine combustion chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101012770A true CN101012770A (en) | 2007-08-08 |
| CN100460637C CN100460637C (en) | 2009-02-11 |
Family
ID=38700475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100566762A Expired - Fee Related CN100460637C (en) | 2007-01-31 | 2007-01-31 | Spherical motorcycle engine combustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100460637C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009121230A1 (en) * | 2008-04-03 | 2009-10-08 | 隆鑫工业有限公司 | A combustion chamber structure of engine |
| CN102305144A (en) * | 2011-03-14 | 2012-01-04 | 隆鑫通用动力股份有限公司 | Composite spherical combustion chamber cylinder head for gasoline engine and gasoline engine |
| CN102305143A (en) * | 2011-03-14 | 2012-01-04 | 隆鑫通用动力股份有限公司 | Cylinder head for arched combustion chamber and gasoline engine employing same |
| CN102425504A (en) * | 2011-11-16 | 2012-04-25 | 力帆实业(集团)股份有限公司 | Three-valve engine piston |
| CN103061862A (en) * | 2012-12-18 | 2013-04-24 | 宁波大叶园林设备有限公司 | Two-stroke gasoline engine with scavenging passage ports for emission reduction of logarithmic differentiation equation turbulent flow channeling pieces |
| CN110388263A (en) * | 2019-08-16 | 2019-10-29 | 象限空间（天津）科技有限公司 | A kind of aviation two-stroke piston type engine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383913B (en) * | 2011-11-21 | 2013-01-16 | 江门王野摩托车制造有限公司 | Combustor structure in motorcycle engine |
| TWI454616B (en) * | 2012-08-22 | 2014-10-01 | Kwang Yang Motor Co | Engine heat dissipation of cylinder head |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2773327Y (en) * | 2004-05-31 | 2006-04-19 | 胡济荣 | Piston of IC engine |
-
2007
- 2007-01-31 CN CNB2007100566762A patent/CN100460637C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009121230A1 (en) * | 2008-04-03 | 2009-10-08 | 隆鑫工业有限公司 | A combustion chamber structure of engine |
| CN102305144A (en) * | 2011-03-14 | 2012-01-04 | 隆鑫通用动力股份有限公司 | Composite spherical combustion chamber cylinder head for gasoline engine and gasoline engine |
| CN102305143A (en) * | 2011-03-14 | 2012-01-04 | 隆鑫通用动力股份有限公司 | Cylinder head for arched combustion chamber and gasoline engine employing same |
| CN102305144B (en) * | 2011-03-14 | 2016-05-18 | 隆鑫通用动力股份有限公司 | Gasoline engine composite spherical combustion chamber cylinder head and gasoline engine thereof |
| CN102425504A (en) * | 2011-11-16 | 2012-04-25 | 力帆实业(集团)股份有限公司 | Three-valve engine piston |
| CN103061862A (en) * | 2012-12-18 | 2013-04-24 | 宁波大叶园林设备有限公司 | Two-stroke gasoline engine with scavenging passage ports for emission reduction of logarithmic differentiation equation turbulent flow channeling pieces |
| CN103061862B (en) * | 2012-12-18 | 2014-12-31 | 宁波大叶园林设备有限公司 | Two-stroke gasoline engine with scavenging passage ports for emission reduction of logarithmic differentiation equation turbulent flow channeling pieces |
| CN110388263A (en) * | 2019-08-16 | 2019-10-29 | 象限空间（天津）科技有限公司 | A kind of aviation two-stroke piston type engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100460637C (en) | 2009-02-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100460637C (en) | Spherical motorcycle engine combustion chamber | |
| KR101996085B1 (en) | COMBUSTION CHAMBER OF DIRECT INJECTION DIESEL ENGINE FOR REDUCING THE NOx | |
| CN103867332A (en) | Water-cooled engine and cylinder cover thereof | |
| CN104271916A (en) | Piston of an internal combustion engine | |
| CN111486019B (en) | Combustion chamber and gas engine | |
| CN106870120A (en) | A kind of high-efficiency engine combustion system | |
| CN109899174A (en) | A kind of combustion system for using gasoline ignition engine instead on the basis of diesel engine | |
| Subramanian et al. | Piston bowl optimization for single cylinder diesel engine using CFD | |
| CN201794675U (en) | Squeeze-flow type compact combustion system with high compression ratio | |
| CN104583545A (en) | Cylinder head with countersink | |
| CN201007242Y (en) | Motorcycle engine piston used for spherical-segment combustion chamber | |
| CN202707271U (en) | Piston of gasoline engine with high compression ratio | |
| CN201246211Y (en) | Motorcycle engine combustion chamber | |
| CN202946255U (en) | Cylinder end air passage structure | |
| CN204344331U (en) | Car engine air admittance combustion system, motor car engine and automobile | |
| CN201007241Y (en) | Motorcycle engine cylinder head used for ellipsoid burning chamber | |
| CN206860306U (en) | A kind of engine and its piston with turbulence chamber | |
| CN202360235U (en) | Intake port structure of small general gasoline engine | |
| US20130239933A1 (en) | Two-cycle engine | |
| CN102787936A (en) | Low-swirl-rate spiral air inlet passage of diesel | |
| CN105604724A (en) | Cylinder cover for single-cylinder swirl chamber diesel engine | |
| CN203488285U (en) | Air inlet pipe and engine with air inlet pipe | |
| CN203756312U (en) | Combustion chamber of gasoline engine | |
| CN106438090A (en) | Low-emission motorcycle engine | |
| CN206205985U (en) | Two stroke engine scavenging pressurizing and lubricating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090211 Termination date: 20100131 |