CN201802503U - Diesel engine piston - Google Patents
Diesel engine piston Download PDFInfo
- Publication number
- CN201802503U CN201802503U CN2010205634852U CN201020563485U CN201802503U CN 201802503 U CN201802503 U CN 201802503U CN 2010205634852 U CN2010205634852 U CN 2010205634852U CN 201020563485 U CN201020563485 U CN 201020563485U CN 201802503 U CN201802503 U CN 201802503U
- Authority
- CN
- China
- Prior art keywords
- diameter
- diesel engine
- combustion chamber
- piston
- ratio
- 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)
Abstract
The utility model discloses a diesel engine piston. The top of the piston is provided with a combustion chamber (2) the longitudinal section of which is W-shaped. The reducing diameter d1 of the combustion chamber (2) and the maximum diameter d2 of the combustion chamber (2) have a ratio ranging from 0.945 to 0.955. The reducing diameter d1 and the piston diameter D have a ratio ranging from 0.57 to 0.59. The reducing diameter d1 and the combustion chamber (2) pit depth h have a ratio ranging from 3.56 to 3.76. By adopting the reducing combustion chamber and optimizing the ratio of the combustion chamber reducing diameter to the combustion chamber maximum diameter, the ratio of the reducing diameter to the piston diameter and the ratio of the reducing diameter to the combustion chamber pit depth, the diesel engine piston enables the combustion chamber to match with a fuel injector with high injection pressure and high atomization quality and improves the combustion quality of the diesel engine. The power performance and the economical efficiency of the diesel engine are also enhanced. The diesel engine is enabled to have the optimum performances. Furthermore, the diesel engine emission level is effectively improved and satisfies the demands of the National Emission Standard Four of China.
Description
Technical field
The utility model relates to a kind of diesel engine piston, belongs to diesel engine part device technique field.
Technical background
Along with the raising day by day of the worsening shortages and the environmental protection consciousness of the world oil energy, the Economy of diesel engine and the requirement of discharging are strict day by day, and corresponding Abgasgesetz is launched respectively in countries in the world, and diesel emission is proposed requirements at the higher level.Be to improve the diesel combustion quality, present diesel electric-controlled system is more and more to be used, and injection pressure has been brought up to more than the 1600bar, the oil sprayer atomization quality be improved significantly.The atomizing feature that be to adapt to oil sprayer has proposed new requirement to the structure of burning chamber of diesel engine, and the chamber structure of prior art can not meet design requirement.
Summary of the invention
The technical problems to be solved in the utility model is: a kind of diesel engine piston that adapts to diesel engine high-performance and more maximum discharge standard is provided.
Technical solution of the present utility model is: a kind of diesel engine piston, the top of described piston is provided with the firing chamber, the longitudinal cross-section, firing chamber is ω shape, maximum diameter d 2 ratios of the reentrant diameter d1 of firing chamber and firing chamber are 0.945～0.955, reentrant diameter d1 and piston diameter D ratio are 0.57～0.59, and the pit depth h ratio of reentrant diameter d1 and firing chamber 2 is 3.56～3.76.
Technique effect of the present utility model is: the utility model is being guaranteed the diesel engine compression ratio, and under the certain prerequisite of combustion chamber volume, adopt the ratio of the maximum diameter of reentrant combustion chamber and reentrant diameter by the optimized combustion chamber and firing chamber, the ratio of reentrant diameter and piston diameter, the ratio of the pit depth of reentrant diameter and firing chamber, make firing chamber and high injection pressure, the oil sprayer of high atomization quality is complementary, improve the burning quality of diesel engine, improve engine power performance, Economy, make diesel engine performance reach best, and effectively improve the emission level of diesel engine, satisfy state's IV and above emission standard requirement.
Description of drawings
Fig. 1 is the utility model diesel engine piston top cross-sectional view.
Among the figure: 1, piston, 2, the firing chamber.
Embodiment
Describe in detail below by accompanying drawing 1 and embodiment:
Embodiment 1:
A kind of diesel engine piston, the top of described piston 1 is provided with firing chamber 2, the longitudinal cross-section of firing chamber 2 is ω shape, maximum diameter d 2 ratios of the reentrant diameter d1 of firing chamber 2 and firing chamber 2 are 0.945, reentrant diameter d1 and piston diameter D ratio are 0.57, and the pit depth h ratio of reentrant diameter d1 and firing chamber 2 is 3.56.
Embodiment 2:
A kind of diesel engine piston, the top of described piston 1 is provided with firing chamber 2, the longitudinal cross-section of firing chamber 2 is ω shape, maximum diameter d 2 ratios of the reentrant diameter d1 of firing chamber 2 and firing chamber 2 are 0.95, reentrant diameter d1 and piston diameter D ratio are 0.58, and the pit depth h ratio of reentrant diameter d1 and firing chamber 2 is 3.66.
Embodiment 3:
A kind of diesel engine piston, the top of described piston 1 is provided with firing chamber 2, the longitudinal cross-section of firing chamber 2 is ω shape, maximum diameter d 2 ratios of the reentrant diameter d1 of firing chamber 2 and firing chamber 2 are 0.955, reentrant diameter d1 and piston diameter D ratio are 0.59, and the pit depth h ratio of reentrant diameter d1 and firing chamber 2 is 3.76.
Above embodiment's diesel engine piston, all be ratio by the maximum diameter d 2 of optimizing and revising reentrant diameter d1 and firing chamber 2, the ratio of reentrant diameter d1 and piston diameter D, the ratio of the pit depth h of reentrant diameter d1 and firing chamber 2, the atomization characteristics of firing chamber and high injection pressure oil sprayer is complementary, make diesel engine performance reach best, and effectively improve the emission level of diesel engine, satisfy state's IV and above emission standard requirement.
Claims (2)
1. diesel engine piston, the top of described piston is provided with firing chamber (2), longitudinal cross-section, firing chamber (2) is ω shape, it is characterized in that: maximum diameter d 2 ratios of the reentrant diameter d1 of firing chamber (2) and firing chamber (2) are 0.945～0.955, reentrant diameter d1 and piston diameter D ratio are 0.57～0.59, and the pit depth h ratio of reentrant diameter d1 and firing chamber (2) is 3.56～3.76.
2. according to the described a kind of diesel engine piston of claim 1, it is characterized in that: maximum diameter d 2 ratios of the reentrant diameter d1 of described firing chamber (2) and firing chamber (2) are 0.95, reentrant diameter d1 and piston diameter D ratio are 0.58, and the pit depth h ratio of reentrant diameter d1 and firing chamber (2) is 3.66.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205634852U CN201802503U (en) | 2010-10-09 | 2010-10-09 | Diesel engine piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205634852U CN201802503U (en) | 2010-10-09 | 2010-10-09 | Diesel engine piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201802503U true CN201802503U (en) | 2011-04-20 |
Family
ID=43872005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205634852U Expired - Fee Related CN201802503U (en) | 2010-10-09 | 2010-10-09 | Diesel engine piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201802503U (en) |
-
2010
- 2010-10-09 CN CN2010205634852U patent/CN201802503U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201802503U (en) | Diesel engine piston | |
| CN202900500U (en) | Oil inlet and outlet valve assembly for common rail high-pressure oil pump | |
| CN201100186Y (en) | Diesel engine combustion room | |
| CN102780160B (en) | High energy spark plug | |
| CN202194718U (en) | Combustor chamber of diesel engine capable of satisfying homogeneous charge compression ignition | |
| CN202176403U (en) | Combustion chamber for gasoline engine | |
| CN202405617U (en) | Motor spark plug | |
| CN206681844U (en) | A kind of high-efficiency engine combustion system | |
| CN202176418U (en) | Novel natural gas engine piston combustion chamber | |
| CN203560000U (en) | Diesel engine piston combustion chamber structure | |
| CN201835935U (en) | Fuel-saving type piston of motorcycle | |
| CN204611817U (en) | Pitch combustion furnace fuel injection system | |
| CN102337960A (en) | Diesel engine combustion chamber | |
| CN204677337U (en) | A kind of universal Diesel Fuel-Natural Gas Dual fuel Electricity Spurt System | |
| CN203906110U (en) | Novel diesel engine piston | |
| CN203285560U (en) | Single cylinder diesel engine piston with novel combustion pits | |
| CN202914198U (en) | Energy conservation and emission reduction combustion system of direct injection type diesel engine | |
| CN201173150Y (en) | Four stroke gas engine rapid combustion system | |
| CN210829519U (en) | Single-cylinder diesel engine piston | |
| CN202797607U (en) | High-energy spark plug | |
| CN201679557U (en) | Pressure accumulation forced air intake type internal combustion engine | |
| CN203296950U (en) | Pool-shaped combustion chamber of diesel engine using natural gas as fuel | |
| CN202133099U (en) | Fuel fan heater | |
| CN202100322U (en) | Motorcycle engine combustion chamber | |
| CN202361378U (en) | Spinning-cup type dual-purpose burner using fuel and gas |
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 |
Granted publication date: 20110420 Termination date: 20171009 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |