CN202176403U - Combustion chamber for gasoline engine - Google Patents
Combustion chamber for gasoline engine Download PDFInfo
- Publication number
- CN202176403U CN202176403U CN2011202841944U CN201120284194U CN202176403U CN 202176403 U CN202176403 U CN 202176403U CN 2011202841944 U CN2011202841944 U CN 2011202841944U CN 201120284194 U CN201120284194 U CN 201120284194U CN 202176403 U CN202176403 U CN 202176403U
- Authority
- CN
- China
- Prior art keywords
- combustion chamber
- relief opening
- water conservancy
- conservancy diversion
- suction port
- 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 - Lifetime
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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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- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The utility model relates to the field of double stroke gasoline engines, in particular to a combustion chamber for a gasoline engine, which comprises an air cylinder body, an air cylinder cover, a piston and a spark plug. The air cylinder body is provided with an air inlet and an air outlet, a flow guide boss is arranged at the top of the piston, the inner wall of the air cylinder cover is provided with a combustion cavity and an avoidance pit, the flow guide boss is identical with the avoidance pit in shape, and the spark plug is arranged in the combustion cavity. The combustion chamber for the gasoline engine is convenient to operate, simple in structure and high in utilization rate of fresh combustible gas.
Description
Technical field
The utility model relates to the two-stroke gasoline engine field, specifically a kind of oily machine firing chamber.
Background technique
Float amount carburetor type two-stroke gasoline engine is in light weight, and power per liter is big, is widely used as the power of universal machine.Existing float petrol machine mostly adopts flat head piston, though flat head piston processing is simple; Low cost of manufacture, hot area is little, but can't form organized air motion in the cylinder; During engine charge, inflammable mixture directly flows to relief opening by suction port through piston head easily, for the float amount carburetor type two-stroke gasoline engine of using flat head piston; There is more serious fuel oil short-circuit loss, causes its power character, Economy and emission performance all relatively poor.In addition, in the whole gas exchange process of two-stroke gasoline engine, there is 30%～40% fresh inflammable mixture in scavenging process, to discharge outside the cylinder approximately with waste gas.
Along with the rise in float amount carburetor type two-stroke gasoline engine market, the shortage of petroleum resources and the raising that engine emission is required; To the particularly research of the firing chamber of float amount carburetor type two-stroke gasoline engine of float amount carburetor type two-stroke gasoline engine, significant.
The model utility content
The utility model provides a kind of easy to operate, simple in structure, fresh inflammable mixture utilization ratio high combustion chamber of petrol engine.
The utility model is realized through following technical proposals:
A kind of combustion chamber of petrol engine; Comprise cylinder block, cylinder head, piston and spark plug; Said cylinder block is provided with suction port and relief opening, and said piston head is provided with the water conservancy diversion boss, and said cylinder head inwall is provided with burning cavity and dodges pit; Said water conservancy diversion boss with dodge pit shape and match, said spark plug is located in the burning cavity.
Said water conservancy diversion boss is an evagination circular arc near one side of relief opening, on one side be indent circular arc near suction port.
Said burning cavity is hemisphere.
Said relief opening and suction port are located at the cylinder block bottom, and said relief opening is higher than said suction port.
The beneficial effect that the utility model brought is:
In the utility model; Said combustion chamber of petrol engine comprises cylinder block, cylinder head, piston and spark plug; Can effectively reduce the fuel oil short-circuit loss of float amount carburetor type two-stroke gasoline engine; Improve its compression ratio, its power character, Economy and emission performance all are improved, and meet the requirement of present energy-saving and emission-reduction, low-carbon (LC); Said piston head is provided with the water conservancy diversion boss; Under the guiding of water conservancy diversion boss; The incoming mixture that gets into cylinder during air inlet flows to cylinder top, and the fuel oil short-circuit loss that incoming mixture directly flows and causes to relief opening when having reduced air inlet is improved its Economy and reduces discharging; Said cylinder head inwall is provided with burning cavity and dodges pit, said water conservancy diversion boss with dodge pit shape and match, saidly dodge pit to cooperate the design of water conservancy diversion boss be in order to step down for the water conservancy diversion boss; Said spark plug is located in the burning cavity, is used for igniting; Said water conservancy diversion boss is an evagination circular arc near one side of relief opening; Near suction port is indent circular arc on one side; Incoming mixture indent circular arc along the water conservancy diversion boss when suction port gets into upwards flows, and this moment, the water conservancy diversion boss blocked relief opening, can prevent that incoming mixture from directly discharging from relief opening; When incoming mixture upwards flowed, the waste gas that fires on top was discharged from relief opening along the evagination circular arc of water conservancy diversion boss; Said burning cavity is hemisphere, and this design can make at piston and close in the compression stroke of relief opening, forms stronger extruding swirl in the cylinder; Extruding swirl squeezes away near the former denseer waste gas of spark plug that rests on; Make incoming mixture be expressed near the spark plug, help the spark plug reliable ignition, thereby make engine combustion speed fast; The thermal efficiency is high, and discharging reduces; Said relief opening and suction port are located at the cylinder block bottom, and said relief opening is higher than said suction port, directly discharge from relief opening in order to prevent incoming mixture.
Description of drawings
Below in conjunction with accompanying drawing the utility model is done further explain.
Fig. 1 is the structural representation of said combustion chamber of petrol engine first state of the utility model;
Fig. 2 is the structural representation of said combustion chamber of petrol engine second state of the utility model;
Fig. 3 is the structural representation of the said cylinder head of the utility model;
Fig. 4 is the said structure of piston schematic representation of the utility model.
The label that component names is corresponding among the figure is following:
1, cylinder block; 11, suction port; 12, relief opening; 2, cylinder head; 21, burning cavity; 22, dodge pit; 3, piston; 31, water conservancy diversion boss; 311, evagination circular arc; 312, indent circular arc; 4, spark plug.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further to detail:
Embodiment as the said combustion chamber of petrol engine of the utility model; Like Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, comprise cylinder block 1, cylinder head 2, piston 3 and spark plug 4, said cylinder block 1 is provided with suction port 11 and relief opening 12; Said piston 3 tops are provided with water conservancy diversion boss 31; Said cylinder head 2 inwalls are provided with burning cavity 21 and dodge pit 22, said water conservancy diversion boss 31 with dodge pit 22 shapes and match, said spark plug 4 is located in the burning cavity 21.Under the guiding of water conservancy diversion boss 31, the incoming mixture that gets into cylinder during air inlet flows to cylinder top, and the fuel oil short-circuit losses that incoming mixture directly flows and causes to relief opening 12 when having reduced air inlet are improved its Economy and reduce discharging; Said design of dodging pit 22 cooperation water conservancy diversion boss 31 is in order to step down for water conservancy diversion boss 31; Said spark plug 4 is used for igniting.
In the present embodiment, one side said water conservancy diversion boss 31 near relief opening 12 be evagination circular arc 311, Yi Bian be indent circular arc 312 near suction port 11.Incoming mixture indent circular arc 312 along water conservancy diversion boss 31 when suction port 11 gets into upwards flows; Water conservancy diversion boss 31 blocks relief opening 12 at this moment; Can prevent that incoming mixture is directly from relief opening 12 discharges; When incoming mixture upwards flowed, the waste gas that fires on top was discharged from relief opening 12 along the evagination circular arc 311 of water conservancy diversion boss 31.
In the present embodiment, said burning cavity 21 is hemisphere.This design can make at piston 3 and close in the compression stroke of relief opening 12; Form stronger extruding swirl in the cylinder, extruding swirl squeezes away near the former spark plug 4 denseer waste gas that rest on, and makes incoming mixture be expressed near the spark plug 4; Help spark plug 4 reliable ignitions; Thereby make engine combustion speed fast, the thermal efficiency is high, and discharging reduces.
In the present embodiment, said relief opening 12 is located at cylinder block 1 bottom with suction port 11, and said relief opening 12 is higher than said suction port 11.This kind design is directly discharged from relief opening 12 in order to prevent incoming mixture.
Claims (4)
1. combustion chamber of petrol engine; It is characterized in that comprising cylinder block, cylinder head, piston and spark plug; Said cylinder block is provided with suction port and relief opening, and said piston head is provided with the water conservancy diversion boss, and said cylinder head inwall is provided with burning cavity and dodges pit; Said water conservancy diversion boss with dodge pit shape and match, said spark plug is located in the burning cavity.
2. combustion chamber of petrol engine as claimed in claim 1, one side it is characterized in that said water conservancy diversion boss near relief opening be evagination circular arc, on one side be indent circular arc near suction port.
3. combustion chamber of petrol engine as claimed in claim 2 is characterized in that said burning cavity is hemisphere.
4. combustion chamber of petrol engine as claimed in claim 3 it is characterized in that said relief opening and suction port be located at the cylinder block bottom, and said relief opening is higher than said suction port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202841944U CN202176403U (en) | 2011-08-05 | 2011-08-05 | Combustion chamber for gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202841944U CN202176403U (en) | 2011-08-05 | 2011-08-05 | Combustion chamber for gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202176403U true CN202176403U (en) | 2012-03-28 |
Family
ID=45866288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202841944U Expired - Lifetime CN202176403U (en) | 2011-08-05 | 2011-08-05 | Combustion chamber for gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202176403U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269042A (en) * | 2011-08-05 | 2011-12-07 | 嘉兴善拓机械有限公司 | Combustion chamber of gasoline engine |
-
2011
- 2011-08-05 CN CN2011202841944U patent/CN202176403U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269042A (en) * | 2011-08-05 | 2011-12-07 | 嘉兴善拓机械有限公司 | Combustion chamber of gasoline engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120328 |
|
| CX01 | Expiry of patent term |