CN201972803U - Cylinder cover of motorcycle engine - Google Patents
Cylinder cover of motorcycle engine Download PDFInfo
- Publication number
- CN201972803U CN201972803U CN2011200071653U CN201120007165U CN201972803U CN 201972803 U CN201972803 U CN 201972803U CN 2011200071653 U CN2011200071653 U CN 2011200071653U CN 201120007165 U CN201120007165 U CN 201120007165U CN 201972803 U CN201972803 U CN 201972803U
- Authority
- CN
- China
- Prior art keywords
- firing chamber
- plug hole
- combustion chamber
- cylinder head
- cylinder cover
- 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
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 utility model discloses a cylinder cover of a motorcycle engine. The cylinder cover is connected and mounted with a head cover and a cylinder body respectively; a combustion chamber capable of being used for mixed gas combustion is arranged in a space formed by mounting and matching a pit on the bottom surface in the cylinder cover with the top surface of a piston; a gas inlet passage, a gas exhaust passage, a gas inlet valve, a gas exhaust valve, a cooling wind passage and a spark plug hole are formed in the cylinder cover; the spark plug hole is formed at the top of the combustion chamber; the combustion chamber is in an ellipse shape; the surface area of the combustion chamber is 60 cm2 to 70cm2; the volume of the combustion chamber is 15 cm3 to 17.8cm3; the surface-to-volume ratio of the combustion chamber is 3.93 to 3.98; the squish flow gap distance from the top surface of a plug to the top surface of the combustion chamber of the cylinder cover is 1.4mm plus/minus 0.1mm, and the squish gas area is 764 mm2 to 1047mm2; the gas inlet passage comprises two tangential gas inlet passages symmetrically producing gas inlet squish flow and rotating round a longitudinal shaft of the cylinder cover; and the distance from the spark plug hole to the gas inlet valve is 1mm smaller than the distance from the spark plug hole to the gas exhaust valve.
Description
Technical field
The utility model belongs to the cylinder head of motor, and what relate generally to is that a kind of motorcycle engine is used the cylinder head of squeezing stream firing chamber technology.
Background technique
Current, how to utilize combustion-chamber shape to control compression and squeeze intensity and the occurrence positions that stream forms, make compression squeeze stream and help accelerating the velocity of propagation of flame of the phase of burning, make burning rapidly, be beneficial to the diffusion of edge gas simultaneously, favourable to antiknock quality, the Economy of raising motor complete machine is a vital task of field of internal combustion engine.Simultaneously, global energy-conservation advocating and the enforcement of state's III Abgasgesetz also is a urgent task.
Motor at motorcycle adopts the stream firing chamber technology of squeezing, utilize combustion-chamber shape to control compression and squeeze intensity and the occurrence positions that stream forms, make compression squeeze stream and help accelerating the velocity of propagation of flame of the phase of burning, make burning rapidly, be beneficial to the diffusion of edge gas simultaneously, favourable to antiknock quality, can improve the Economy of motor complete machine, to global energy-conservation advocate and very big effect is played in the enforcement of state's III Abgasgesetz.
Summary of the invention
The purpose of this utility model is to propose a kind of motorcycle engine cylinder cap, has realized the active combustion of lean mixture gas, is beneficial to the diffusion of edge gas simultaneously, and is favourable to antiknock quality, reached fuel-efficient target.
For solving the problems of the technologies described above, the utility model adopts following technical proposal:
A kind of motorcycle engine cylinder cap, cylinder head respectively with skull and cylinder body connection, cylinder head inner bottom surface pit is installed with piston-top surface and is cooperated the space that forms for supplying the firing chamber of mixed gas burning, be provided with intake duct, air outlet flue, intake valve, exhaust valve, cooling duct and spark-plug hole in the cylinder head, spark-plug hole is positioned at top of combustion chamber, described firing chamber be shaped as ellipse, combustor surface is long-pending to be 60-70cm
2, combustion chamber volume is 15-17.8cm
3, the surface to volume ratio of firing chamber is 3.93-3.98; Described piston-top surface is 1.4mm ± 0.1mm to the crowded ebb interval distance of head combustion chamber end face, and its quench area is 764-1047mm
2Described intake duct produces the air inlet eddy flow by two symmetries and forms around the tangential inlet duct of cylinder head longitudinal axis rotation; The distance of spark-plug hole and intake valve is than the little 1mm of distance of spark-plug hole and exhaust valve.
In above-mentioned motorcycle engine combustion chamber, the bus and the cylinder head of described tangential inlet duct are tangent, the tangential inlet duct straight shape, and the bore of tangential inlet duct from the inlet end to the exhaust end narrows gradually.
The beneficial effects of the utility model are:
1, compression ratio is meant the ratio of cylinder total volume and combustion chamber volume, its expression piston compressed degree of gas in the cylinder when lower dead center moves on to top dead center, and compression ratio is an important parameter weighing the motor car engine performance index; The surface to volume ratio of firing chamber is meant the long-pending ratio with its volume of combustor surface.Owing to use the technology of squeezing the stream firing chamber, make the compression ratio of motor also be controlled in the scope of 9.1-9.2 as far as possible, combustion chamber surface to volume ratio F/V is controlled in the scope of 3.93-3.98;
2, spark-plug location deflection intake valve one side is not only favourable to antiknock quality, and improves flame area spreading rate and rate of burning;
3, increase the quench area ratio, improved the performance of motor, not only help the raising of power but also can suitably reduce fuel consumption rate;
4, piston is reciprocating in cylinder, and the volume in the cylinder constantly changes, and when piston was positioned at top dead center position, piston head and the formed space of cylinder head internal surface were called the firing chamber, and this spatial volume is called combustion chamber volume.By adopting the technology of squeezing the stream firing chamber, make the air motion that forms suitable intensity in the firing chamber can increase velocity of propagation of flame, the boundary of catching fire of expansion mixed gas, rarer mixed gas can burn;
5, squeezing stream is meant near top dead center, air is by flowing to laterally (or radially) gas motion of cylinder axis ground around the cylinder, in the time of piston stroking upward, the corresponding crowded stream interface of piston and cylinder head is pushed air and is produced laterally and radial motion, cylinder head is moved with the strong air flow that oval combustion chamber produced between the corresponding piston, help accelerating the velocity of propagation of flame of the phase of burning, make burning rapidly, be beneficial to the diffusion of edge gas simultaneously, favourable to antiknock quality, can improve the Economy of motor complete machine.
Description of drawings
Fig. 1 is a cylinder head transverse sectional view of the present utility model;
Fig. 2 is a cylinder head longitudinal sectional view of the present utility model.
Embodiment
Below in conjunction with drawings and embodiments the utility model is described in further detail.
As depicted in figs. 1 and 2, the application of the utility model motorcycle engine is squeezed in the cylinder head 1 that flows the firing chamber and is provided with intake duct 6, air outlet flue 7, intake valve 8, exhaust valve 9, cooling duct 10 and spark-plug hole 11, and cylinder head 1 inner bottom surface pit 4 is installed to cooperate to form with piston 5 end faces and can be supplied the firing chamber 12 of mixed gas burning; Intake duct 6 produces the air inlet eddy flow by two symmetries and forms around the tangential inlet duct of cylinder head 1 longitudinal axis rotation, the bus of tangential inlet duct and cylinder head 1 are tangent, the tangential inlet duct straight shape, the bore of tangential inlet duct from the inlet end to the exhaust end narrows gradually, thereby can guarantee the smooth and easy supply and the exhaust of mixed gas; The distance of spark-plug hole 11 and intake valve 8 is than the distance little 1mm of spark-plug hole 11 with exhaust valve 9, and the position of spark-plug hole 11 directly influences the length of flame travel, thereby influences antiknock quality, can improve flame area spreading rate and rate of burning; Piston 5 end faces to the crowded ebb interval distance of cylinder head 1 firing chamber 12 end faces is 1.4mm ± 0.1mm, suitably increases the squish gap, can improve the performance of motor, not only helps the raising of power, can also suitably reduce fuel consumption rate.
Describe the action principle of the utility model ridge shape motorcycle engine combustion chamber below in detail:
As shown in Figure 2, the action principle that the utility model squeezes stream firing chamber technology is: in intake stroke, fresh charge is under the suction function of suction port at descent of piston, enter cylinder body, and the burning mixture that enters cylinder body is in compression stroke, when piston stroking upward, under the acting in conjunction of the firing chamber between piston and the cylinder head, form strong squish eddy current.
The above only is preferred embodiment of the present utility model, is not structure of the present utility model is done any pro forma restriction.Every foundation technical spirit of the present utility model all still belongs in the scope of the technical solution of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (2)
1. motorcycle engine cylinder cap, cylinder head (1) respectively with skull (2) and cylinder body (3) connection, cylinder head (1) inner bottom surface pit (4) is installed with piston (5) end face and is cooperated the space that forms for supplying the firing chamber (12) of mixed gas burning, be provided with intake duct (6) in the cylinder head (1), air outlet flue (7), intake valve (8), exhaust valve (9), cooling duct (10) and spark-plug hole (11), spark-plug hole (11) is positioned at top, firing chamber (12), it is characterized in that: described firing chamber (12) be shaped as ellipse, firing chamber (12) surface area is 60-70cm
2, firing chamber (12) volume is 15-17.8cm
3, the surface to volume ratio of firing chamber (12) is 3.93-3.98; Described piston (5) end face is 1.4mm ± 0.1mm to the crowded ebb interval distance of cylinder head (1) firing chamber (12) end face, and its quench area is 764-1047mm
2Described intake duct (6) produces the air inlet eddy flow by two symmetries and forms around the tangential inlet duct of cylinder head (1) longitudinal axis rotation; The distance of spark-plug hole (11) and intake valve (8) is than the distance little 1mm of spark-plug hole (11) with exhaust valve (9).
2. motorcycle engine cylinder cap according to claim 1 is characterized in that: the bus of described tangential inlet duct and cylinder head (1) are tangent, the tangential inlet duct straight shape, and the bore of tangential inlet duct from the inlet end to the exhaust end narrows gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200071653U CN201972803U (en) | 2011-01-12 | 2011-01-12 | Cylinder cover of motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200071653U CN201972803U (en) | 2011-01-12 | 2011-01-12 | Cylinder cover of motorcycle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201972803U true CN201972803U (en) | 2011-09-14 |
Family
ID=44577910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200071653U Expired - Fee Related CN201972803U (en) | 2011-01-12 | 2011-01-12 | Cylinder cover of motorcycle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201972803U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748077A (en) * | 2011-06-21 | 2012-10-24 | 摩尔动力(北京)技术股份有限公司 | Small-clearance volume explosion-exhaust engine |
| CN109578131A (en) * | 2017-09-29 | 2019-04-05 | Ifp新能源公司 | Oval combustion chamber |
-
2011
- 2011-01-12 CN CN2011200071653U patent/CN201972803U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748077A (en) * | 2011-06-21 | 2012-10-24 | 摩尔动力(北京)技术股份有限公司 | Small-clearance volume explosion-exhaust engine |
| CN102748077B (en) * | 2011-06-21 | 2014-07-16 | 摩尔动力(北京)技术股份有限公司 | Small-clearance volume explosion-exhaust engine |
| CN109578131A (en) * | 2017-09-29 | 2019-04-05 | Ifp新能源公司 | Oval combustion chamber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9027529B2 (en) | Piston positioned for reciprocal movement in a combustion engine cylinder | |
| CN106870120A (en) | A kind of high-efficiency engine combustion system | |
| CN105804856B (en) | A kind of opposed pistons two-stroke directly spraying petrol engine combustion camber in cylinder | |
| CN106640455A (en) | Cylinder cover combustion system of middle-arranged oil atomizer for direct-injection gasoline engine | |
| CN207018102U (en) | A kind of gasoline compression ignition piston combustion bowl | |
| CN202348419U (en) | Dual VVT (Variable Valve Timing) piston combustion chamber | |
| CN201972803U (en) | Cylinder cover of motorcycle engine | |
| CN205955853U (en) | Directly spout vortex top land combustion chamber | |
| CN202108579U (en) | Combustion system of vortex type diesel engine | |
| CN201810411U (en) | Cylinder cover of diesel engine | |
| CN204591503U (en) | Direct spray petrol engine in cylinder cylinder | |
| CN203081564U (en) | Pressurized diesel engine piston combustion chamber | |
| CN106523149B (en) | A kind of opposed pistons gasoline engine dual reflux scavenging combustion system | |
| CN205936807U (en) | Combustion chamber structure | |
| CN106762101A (en) | A kind of directly jetting gasoline engine combustion system and control method | |
| CN107100756A (en) | A kind of piston for directly jetting gasoline engine channel-style combustion chamber | |
| CN2906088Y (en) | Improved diesel engine 4125 cylinder cover assembly | |
| CN203050906U (en) | Cylinder inside direct-injection gasoline-engine piston | |
| CN201554570U (en) | Direct-injection gasoline engine piston | |
| CN206681844U (en) | A kind of high-efficiency engine combustion system | |
| CN101251040A (en) | Engine combustion chamber structure | |
| CN206860304U (en) | A kind of piston for directly jetting gasoline engine channel-style combustion chamber | |
| KR20090064171A (en) | Piston head for gasoline direct injection engine | |
| CN204961060U (en) | Novel combustion chamber | |
| CN206175057U (en) | Oblique air flue side combusion chamber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110914 Termination date: 20120112 |