CN2893176Y - Contracting and expanding spray tube precombustion chamber separating combustion chamber diesel internal combustion engine - Google Patents
Contracting and expanding spray tube precombustion chamber separating combustion chamber diesel internal combustion engine Download PDFInfo
- Publication number
- CN2893176Y CN2893176Y CNU2006200020561U CN200620002056U CN2893176Y CN 2893176 Y CN2893176 Y CN 2893176Y CN U2006200020561 U CNU2006200020561 U CN U2006200020561U CN 200620002056 U CN200620002056 U CN 200620002056U CN 2893176 Y CN2893176 Y CN 2893176Y
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- combustion engine
- chamber
- diesel internal
- firebox
- contracting
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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
A diesel internal-combustion engine with a divided firebox of pre-firebox of a shrinking and expansion nozzle is mainly characterized by a shrinking and expansion nozzle arranged between an auxiliary firebox and a main firebox in the pre-firebox. The shrinking and expansion channel has easy structure and manufacturing technique and is applicable to high-speed diesel internal combustion engine; besides, the mixed gas atomization of the diesel internal-combustion engine with a divided firebox of pre-firebox of a shrinking and expansion nozzle is good in full burning and environment protection with the low contamination exhaust.
Description
Affiliated technical field
The utility model relates to a kind of pre-combustion separation type diesel internal combustion engine with contracting and expanding type nozzle structure, especially a kind of in combustion engine cylinder head the main combustion chamber connecting passage in precombustion chamber separated type subsidiary combustion chamber and the cylinder adopt the diesel engine of shrinkage expansion type nozzle structure.
Background technique
At present, the flowability of known because diesel oil and vapo(u)rability are all than gasoline difference, so diesel engine can not resemble the gasoline engine at the outside inflammable mixture that forms of cylinder, the inflammable mixture of diesel engine can only form in cylinder, because the formation time of the inflammable mixture of diesel engine is extremely short, firing chamber mixed gas composition everywhere is very inhomogeneous, in order to improve the performance of diesel engine, so there is the part diesel engine to adopt the separated type firing chamber, because what adopt between the main combustion chamber of existing precombustion chamber separated type firing chamber diesel engine and the pre-burning subsidiary combustion chamber is the gas channel of the identical flat type of diameter, the flat type passage can not be given full play to the power performance and the combustion performance of the combustion gas of high speed and high pressure.
Summary of the invention
What adopt between the main combustion chamber of existing precombustion chamber separated type firing chamber internal-combustion engine and the pre-burning subsidiary combustion chamber is the connecting passage of the identical flat type of diameter, can not give full play to the power performance and the combustion performance of high speed and high pressure inflammable gas in order to overcome the flat type passage.The utility model provides a kind of pre-combustion separation type diesel internal combustion engine with contracting and expanding type nozzle structure, can not only give full play to the power performance and the combustion performance of the combustion gas of high speed and high pressure, and can reduce the discharging of diesel internal combustion organic pollutants.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of pre-combustion separation type diesel internal combustion engine with contracting and expanding type nozzle structure is characterized in that the shrinkage expansion type connecting passage that is provided with between precombustion chamber subsidiary combustion chamber in the diesel engine cylinder head and the main combustion chamber in the cylinder is a shrinkage expansion type jet pipe.
It is supersonic nozzle type structure that passage between its main and auxiliary combustor of pre-combustion separation type diesel internal combustion engine with contracting and expanding type nozzle structure has adopted the structure of shrinkage expansion type, shrinkage expansion type passage is arranged in the diesel engine cylinder lid fully, the precombustion chamber subsidiary combustion chamber is divided into combustion section, the passages shrink section, passage diverging nozzle section.
Shrinkage expansion type passage between the main and auxiliary combustor directly is connected with subsidiary combustion chamber, in compression process, pressurized air enters precombustion chamber subsidiary combustion chamber through shrinkage expansion type passage with high speed or velocity of sound from main combustion chamber, and form strong amorphous turbulent flow therein, diesel oil sprays in face of airflow direction, tiny diesel oil oil droplet is crashed to pieces and by good atomizing, when the pressure of main and auxiliary combustor reaches certain one-tenth and spends, the diesel oil mixed gas is got angry burning in advance at the subsidiary combustion chamber top, the air-flow of subsidiary combustion chamber sharply raises because of combustion expansion pressure, and high-temperature high-pressure fuel gas enters cylinder main combustion chamber with velocity of sound or superelevation velocity of sound from the subsidiary combustion chamber ejection through shrinkage expansion type passage from the precombustion chamber subsidiary combustion chamber.
The beneficial effects of the utility model are, the major character of pre-combustion separation type diesel internal combustion engine with contracting and expanding type nozzle structure is arranged on the shrinkage expansion type passage between precombustion chamber subsidiary combustion chamber and the main combustion chamber, the structure and the manufacturing process of shrinkage expansion type passage are simple, be applicable to the high-speed diesel fuel internal-combustion engine, the atomizing of diesel oil mixed gas is good, sufficient combustion, the lower and environmental protection of pollutant emission.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a vertical section structure plan view of the present utility model.
Fig. 2 is a vertical section structure side view of the present utility model.
Fig. 3 is example structure figure of the present utility model.
Among the figure, 1. oil drain plug, 2. oil sump, 3. bent axle, 4. body, 5. outlet pipe, 6. piston, 7. suction tude, 8. cylinder head, 9. valve, 10. camshaft, 11. valve mechanism cover, 12. Injection Pump, 13. oil sprayers, 14. precombustion chamber separated type subsidiary combustion chamber, 15. precombustion chamber shrinkage expansion type jet pipe, 16. fuel oil filters, 17. coolant pumps, 18. lubricating oil filter, 19. lubricating pumps, 20. belt pulleys, 21. belt, 22. gear, 23. main combustion chambers, 24. shrinkage expansion type jet pipe expansion regions, 25. shrinkage expansion type jet pipe shrinking zone, 26. glow plugs.
Embodiment
In Fig. 3, by piston (6), cylinder head (8), shrinkage expansion type jet pipe expansion regions (24), shrinkage expansion type jet pipe shrinking zone (25), precombustion chamber separated type subsidiary combustion chamber (14), oil sprayer (13), shrinkage expansion type jet pipe (15), main combustion chamber (23), glow plug (26), body (4) has been formed the firing chamber of diesel engine.Precombustion chamber separated type subsidiary combustion chamber (14) in cylinder head in (8) links to each other with oil sprayer (13) glow plug (26).Main combustion chamber (23) in piston (6) and body (4) links to each other with precombustion chamber separated type subsidiary combustion chamber (14) in the cylinder head (8) by the shrinkage expansion type jet pipe expansion regions (24) in the shrinkage expansion type jet pipe (15) and shrinkage expansion type jet pipe shrinking zone (25).
Claims (1)
1 one kinds of pre-combustion separation type diesel internal combustion engine with contracting and expanding type nozzle structure is characterized in that the shrinkage expansion type connecting passage that is provided with between precombustion chamber subsidiary combustion chamber in the pre-combustion separation type diesel internal combustion engine with contracting and expanding type nozzle structure cylinder head and the main combustion chamber in the cylinder is a shrinkage expansion type jet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200020561U CN2893176Y (en) | 2006-02-06 | 2006-02-06 | Contracting and expanding spray tube precombustion chamber separating combustion chamber diesel internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200020561U CN2893176Y (en) | 2006-02-06 | 2006-02-06 | Contracting and expanding spray tube precombustion chamber separating combustion chamber diesel internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2893176Y true CN2893176Y (en) | 2007-04-25 |
Family
ID=38061341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200020561U Expired - Fee Related CN2893176Y (en) | 2006-02-06 | 2006-02-06 | Contracting and expanding spray tube precombustion chamber separating combustion chamber diesel internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2893176Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488018A (en) * | 2018-05-29 | 2018-09-04 | 重庆隆鑫发动机有限公司 | The Heavy End Aviation Fuel engine and aircraft of in-cylinder direct-jet |
| CN108757203A (en) * | 2018-05-29 | 2018-11-06 | 重庆隆鑫发动机有限公司 | The dual ignition plug cylinder head assembly and aero-engine of heavy fuel burning engine |
-
2006
- 2006-02-06 CN CNU2006200020561U patent/CN2893176Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488018A (en) * | 2018-05-29 | 2018-09-04 | 重庆隆鑫发动机有限公司 | The Heavy End Aviation Fuel engine and aircraft of in-cylinder direct-jet |
| CN108757203A (en) * | 2018-05-29 | 2018-11-06 | 重庆隆鑫发动机有限公司 | The dual ignition plug cylinder head assembly and aero-engine of heavy fuel burning engine |
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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: 20070425 |