CN203879614U - Insert of combustion chambers of small vortex air-cooled diesel engine - Google Patents
Insert of combustion chambers of small vortex air-cooled diesel engine Download PDFInfo
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- CN203879614U CN203879614U CN201420255514.7U CN201420255514U CN203879614U CN 203879614 U CN203879614 U CN 203879614U CN 201420255514 U CN201420255514 U CN 201420255514U CN 203879614 U CN203879614 U CN 203879614U
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- connecting passage
- combustion chamber
- diesel engine
- insert
- air
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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 discloses an insert of combustion chambers of a small vortex air-cooled diesel engine, and belongs to the technical field of internal combustion engines. A circular groove is formed in the upper surface of the insert, a starting hole which is communicated with the lower surface of the insert is formed in the bottom of the groove, a divergent conical connecting channel A and a divergent conical connecting channel B are further arranged on a side of the starting hole, small end holes are formed in the upper surface of the connecting channel A, and small end holes are formed in the lower surface of the connecting channel B. The insert has the advantages that air on two sides of the main combustion chamber can be sufficiently utilized, the difference in the concentration of mixed gas in the main combustion chamber can be reduced, the insert is favorable for mixed combustion after fuel oil is ejected, the mixed gas can be uniformly and completely combusted, and the air utilization rate, particularly the utilization rate of the air on the two sides of the main combustion chamber, can be increased; a combustion condition of the main combustion chamber can be improved, the insert is favorable for reducing the exhaust temperature, a fuel consumption rate of the diesel engine can be reduced, an emission statue of the diesel engine can be improved, and exhaust pollution can be reduced.
Description
Technical field
The utility model relates to combustion chambers of internal combustion engines accessory, belongs to technical field of internal combustion engines.。
Background technique
Internal-combustion engine is China's major impetus machinery, and there are direct spray type and non-direct spray type (eddy cell type, pre-burning cell-type etc.) in its firing chamber.Wherein swirl chamber diesel occupies critical role in Chinese national economy, as power such as automobile, tractor, agricultural water pump, reaper, small engineering machinery, spitkits, be widely used in the industry-by-industries such as traffic, agricultural, industry, nearly 8,000,000 of Annual output is obvious characteristic and the advantage of China's internal combustion engine development.
The firing chamber of vortex type internal-combustion engine is divided into main combustion chamber and subsidiary combustion chamber, and wherein subsidiary combustion chamber consists of with internal-combustion engine vortex chamber jointly inserting of internal-combustion engine, and several passages by inserting, are connected main combustion chamber with subsidiary combustion chamber.
The structure that internal-combustion engine is inserted, shape and size combustion motor combustion performance have a significant impact, and are mainly manifested in the following aspects:
(1) uniformity that fuel oil mixes in firing chamber with air;
(2) strength of vortex of air and the mobility of mixed gas;
(3) fuel spray is in the deposition of chamber wall;
(4) utilization ratio of air, and the utilization ratio of air directly has influence on the adequacy of fuel combustion, also has influence on the exhaust index of diesel engine.
For the structure of vortex diesel engine insert, the exploration of shape and size, it is the emphasis of vortex diesel engine improvement in performance work always.
In existing technology, inserting except starting hole of traditional vortex diesel engine, only has a connecting passage or Twin channel, and Entry Interface generally all adopts uniform section passage, in patent 201210178387.0 and 200910024451.8.This technology exists vortex diesel engine burning indoor air flows insufficient, and the connecting passage direction that traditional swirl chamber diesel is inserted misalignment main combustion chamber both sides, therefore the air of main combustion chamber both sides can not make full use of, in main combustion chamber, mixture strength difference is larger, and then velocity of combustion is slow, burn inhomogeneous, cause fuel consume high, the smoke intensity of gas and Visible pollutant discharge are poor.
Summary of the invention
The utility model object is to propose a kind of small-sized vortex type air-cooled diesel engine combustion chamber insert, and this structure of inserting has increased the area of main and auxiliary combustor's connecting passage, has improved the air-fuel mixture speed of main and auxiliary combustor, thereby improves the combustion performance of internal-combustion engine.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of small-sized vortex type air-cooled diesel engine combustion chamber insert, the described upper surface of inserting is circular groove, in the bottom of groove, be provided with the starting hole with the lower surface UNICOM of inserting, it is characterized in that: the side in starting hole is also provided with connecting passage A and the connecting passage B of flaring taper, wherein the upper surface of connecting passage A is little stomidium, and the lower surface of connecting passage B is little stomidium.
Said structure is further limited, and described connecting passage A and connecting passage B be for being obliquely installed, and the center line of itself and affiliated circular groove tilts 40 °, and connecting passage A and connecting passage B have the angle of flare of 2 ° ~ 15 °.
Said structure is further limited, and the angle that described connecting passage A and the center line of connecting passage B are is 2 ° ~ 8 °.
Said structure is further limited, and described connecting passage A and the upper and lower port of connecting passage B are fillet.
Said structure is further limited, and described connecting passage A and the cross section of connecting passage B are racetrack structure, and the cross section in starting hole is round structure.
Said structure is further limited, and described connecting passage A is between connecting passage B and starting hole.
The beneficial effect that adopts technique scheme to produce is: the utility model improves the connecting pipeline structure of main and auxiliary combustor, utilize Twin channel arranged in form in the both sides of main combustion chamber, and two connecting passages are the tapered structure to both sides flaring, can increase the area of main and auxiliary combustor's connecting passage like this, take full advantage of the air of both sides in main combustion chamber, air-fuel mixture speed increases, the concentration difference of main combustion chamber mixed gas reduces, burn more even more rapidly, improved air utilization ratio, thereby improve the combustion position of firing chamber, be conducive to improve fuel consume and emission performance, the center line of connecting passage A and connecting passage B is not parallel, there is differential seat angle in the median plane of two passages, when air enters subsidiary combustion chamber by passage, two strands of air can intersect, and its two strands of air form the weak air stream of the last one one, drive flowing of the interior air of subsidiary combustion chamber, also can improve air-fuel mixture speed.
Accompanying drawing explanation
Fig. 1 is main sectional view of the present utility model;
Fig. 2 is the plan view of Fig. 1;
Fig. 3 is the worm's eye view of Fig. 1;
Fig. 4 is the structural representation that the utility model is applied to combustion chambers of internal combustion engines;
Wherein: 1, oil sprayer, 2, cylinder head, 3, subsidiary combustion chamber, 4, insert, 5, starting hole, 6, connecting passage A, 7, connecting passage B, 8, main combustion chamber.
Specific embodiments
With reference to accompanying drawing 1, the utility model is specifically related to a kind of small-sized vortex type air-cooled diesel engine combustion chamber insert, for cylinder bore, is 60 ~ 80mm, and displacement per cylinder is the small air-cooled diesel engine combustion chamber insert of 0.2 ~ 0.5 liter.
Concrete structure of the present utility model is as shown in accompanying drawing 1-3, comprise: (4) upper surface of inserting is circular groove, in the bottom of groove, be provided with the starting hole (5) with (4) the lower surface UNICOM of inserting, a side in starting hole (5) is also provided with connecting passage A (6) and the connecting passage B (7) of flaring taper, wherein the upper surface of connecting passage A (6) is little stomidium, the lower surface of connecting passage B (7) is little stomidium, connecting passage A (6) is positioned between connecting passage B (7) and starting hole (5), connecting passage A (6) and connecting passage B (7) are for being obliquely installed, formed like this taper connection channel design of two variable cross sections.
40 ° of the center line inclinations of two passages in the utility model total fresh and affiliated circular groove, and connecting passage A (6) and connecting passage B (7) have the angle of flare of 2 ° ~ 15 °.The angle that the center line of connecting passage A (6) and connecting passage B (7) is is 2 ° ~ 8 °.The upper and lower port of connecting passage A (6) and connecting passage B (7) is fillet.The cross section of connecting passage A (6) and connecting passage B (7) is racetrack structure, and the cross section in starting hole (5) is round structure.
Structure accompanying drawing 4 while specifically using according to the utility model is known, and when diesel engine piston is in up compression process, the air in cylinder is pushed by piston, through connecting passage A (6) and connecting passage B (7), flows into subsidiary combustion chamber (3).Owing to there is differential seat angle in the connecting passage A (6) of cone structure and the median plane of connecting passage B (7), so two strands of air can form intersection when air flows into subsidiary combustion chamber (3) through two connecting passages.And connecting passage A (6) and (7) one of connecting passage B are contraction mouths, one is extension mouth, when flowing through, air forms two strands of weak air of the last one one, high velocity air drives low speed flow, form strong organized rotatablely moving, impel the fuel oil and the air that spray in vortex chamber to mix.
The arrangement of two connecting passages in the utility model is reasonable, connecting passage A (6) is tangent with the sidewall of subsidiary combustion chamber (3), aim at subsidiary combustion chamber (3) wall, impel strength of vortex stronger, connecting passage B (7) is near subsidiary combustion chamber (3) central authorities, aim at oil spout direction, the path while impelling gas to flow out is short.Two connecting passage complementations, make strength of vortex stronger, and air-fuel mixture is rapider.
The utility model has improved the structure of original passage of inserting, two connecting passages are the taper to both sides flaring, its cross section changes, the two ends up and down of two connecting passages communicate with main and auxiliary combustor to hold greatly with small end respectively, increased like this area of main and auxiliary combustor's connecting passage, take full advantage of the air of both sides in main combustion chamber, air-fuel mixture speed increases, the concentration difference of main combustion chamber mixed gas reduces, burn more even more rapidly, improve air utilization ratio, thereby improved the combustion position of firing chamber, be conducive to improve fuel consume and emission performance.
Claims (6)
1. a small-sized vortex type air-cooled diesel engine combustion chamber insert, described (4) upper surface of inserting is circular groove, in the bottom of groove, be provided with the starting hole (5) being communicated with (4) lower surface of inserting, it is characterized in that: the side in starting hole (5) is also provided with the connecting passage A(6 of flaring taper) and connecting passage B(7), connecting passage A(6 wherein) upper surface is little stomidium, connecting passage B(7) lower surface be little stomidium.
2. according to a kind of small-sized vortex type air-cooled diesel engine combustion chamber insert described in right 1, it is characterized in that: described connecting passage A(6) and connecting passage B(7) for being obliquely installed, the center line of itself and affiliated circular groove tilts 40 °, and connecting passage A(6) and connecting passage B(7) angle of flare of 2 ° ~ 15 ° there is.
3. according to a kind of small-sized vortex type air-cooled diesel engine combustion chamber insert described in right 1, it is characterized in that: described connecting passage A(6) and connecting passage B(7) the center line angle that is be 2 ° ~ 8 °.
4. according to a kind of small-sized vortex type air-cooled diesel engine combustion chamber insert described in right 1, it is characterized in that: described connecting passage A(6) and connecting passage B(7) upper and lower port be fillet.
5. according to a kind of small-sized vortex type air-cooled diesel engine combustion chamber insert described in right 1, it is characterized in that: described connecting passage A(6) and connecting passage B(7) cross section be racetrack structure, starting hole (5) cross section be round structure.
6. according to a kind of small-sized vortex type air-cooled diesel engine combustion chamber insert described in right 1, it is characterized in that: described connecting passage A(6) be positioned at connecting passage B(7) and start between hole (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420255514.7U CN203879614U (en) | 2014-05-20 | 2014-05-20 | Insert of combustion chambers of small vortex air-cooled diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420255514.7U CN203879614U (en) | 2014-05-20 | 2014-05-20 | Insert of combustion chambers of small vortex air-cooled diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203879614U true CN203879614U (en) | 2014-10-15 |
Family
ID=51680120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420255514.7U Expired - Fee Related CN203879614U (en) | 2014-05-20 | 2014-05-20 | Insert of combustion chambers of small vortex air-cooled diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203879614U (en) |
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2014
- 2014-05-20 CN CN201420255514.7U patent/CN203879614U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20160520 |