CN201810412U - Diesel engine piston combustion chamber - Google Patents
Diesel engine piston combustion chamber Download PDFInfo
- Publication number
- CN201810412U CN201810412U CN2010205667540U CN201020566754U CN201810412U CN 201810412 U CN201810412 U CN 201810412U CN 2010205667540 U CN2010205667540 U CN 2010205667540U CN 201020566754 U CN201020566754 U CN 201020566754U CN 201810412 U CN201810412 U CN 201810412U
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- combustion chamber
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- diesel engine
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Abstract
The utility model discloses a diesel engine piston combustion chamber. Based on the conventional diesel engine reentrant w-shaped combustion chamber, the combustion chamber is designed, wherein the aperture is phi 80.5 to phi 82.5mm and the depth is 1 to 2mm; the throat diameter is phi 63.5 to phi 65.5mm and a transition round corner on the part is R1 to R3mm; the inclination angle of an inclination plane between the throat and a top surface is 28 to 30 degrees; and the diameter of the combustion chamber is phi 65.5 to 67.5mm, the depth of the combustion chamber is 19.5 to 21.5mm, the radius of the cavity is R7 to R9mm, the diameter of a central lug boss is phi 4 to phi 6mm, the height of the lug boss is 8 to 10mm and the taper of the lug boss is 24 to 26 degrees. Compared with the conventional reentrant w-shaped combustion chamber, the combustion chamber contributes to quickly separating fuel from a wall after fuel impingement and reduces emission of hydrocarbon compounds (HC) and carbon smoke produced by fuel accumulation on the wall. The fuel and air can be fully mixed and combusted according to a required rule to achieve the optimal fuel consumption index and emission index.
Description
Technical field
The utility model belongs to field of internal combustion engine, relates to a kind of diesel engine piston, relates in particular to a kind of diesel engine piston firing chamber.
Background technique:
Along with the development of society, human progress, people's environmental consciousness constantly strengthens.In recent years, in China's field of internal combustion engine, road and non-road machine more and more cause people's great attention with the emission problem of diesel engine.The factor of influence discharging is a lot, and wherein the piston as main movement parts is bigger to the influence of complete machine emission performance.And the firing chamber of piston head is very important to the influence of discharging as the mixing and the burning place of oil, gas.
China and countries in the world government have all issued more and more strict Abgasgesetz in succession, and it is trend of the times that the toxic emission index of current diesel engine must satisfy domestic, international emission standard, and the discharging certificate of certification is equivalent to the production licence of diesel engine.Therefore, the diesel engine product wants to possess vast market prospect and competitive ability, presses for the environment-friendly motor of the low pollution of exploitation, low emission.
The direct injection diesel engine piston of each model of China is extensive use of straight mouthful toroidal combustion chamber or reducing toroidal combustion chamber at present, these two kinds of firing chambers all have the low and easy advantage of starting of specific fuel consumption, but the former can only satisfy I, the emission standard in II stage, and eliminating this structure is trend of the times.The reducing of latter firing chamber can be strengthened the gas turbulence of oral area, promotes the diffusion mixing and burning of oil, gas, satisfies II, the emission standard in III stage.
The model utility content:
The purpose of this utility model is to provide a kind of can satisfy the diesel engine piston firing chamber that V stage emission standard requires.
The technical solution of the utility model is: a kind of diesel engine piston firing chamber, and designing opening diameter Φ A on the basis of conventional diesel engine reducing toroidal combustion chamber is Φ 80.5～Φ 82.5mm, its degree of depth F is 1～2mm; Throat diameter Φ B is Φ 63.5～Φ 65.5mm, and the knuckle r of this place is R1～R3mm; Inclination angle of inclined plane α between aditus laryngis and end face is 28 °～30 °; Firing chamber diameter of phi D is Φ 65.5～Φ 67.5mm, and combustion-chamber depth H is 19.5～21.5mm, and the inner chamber radius R is R7～R9mm, and the diameter of phi C of central boss is Φ 4～Φ 6mm, and boss height F is 8～10mm, and the boss cone angle beta is 24 °～26 °.
The utility model can reach following good effect: compare with traditional reducing toroidal combustion chamber, separate with wall after helping the oil bundle to hit wall fast this firing chamber, thereby reduce HC (hydrocarbon), the carbon smoke exhaust that produces because of wall accumulation fuel oil; Can play the effect of strengthening extruding swirl, oil, gas rule is on request mixed and burning fully, reach best oil consumption and exhaust index, and the oil consumption index compares with former design, energy-conservation more than 10%.
Description of drawings:
Accompanying drawing is a kind of diesel engine piston chamber structure of the utility model schematic representation.
Embodiment:
Below in conjunction with accompanying drawing the utility model is further described.As shown in drawings, the opening diameter Φ A of a kind of diesel engine piston firing chamber is Φ 80.5～Φ 82.5mm, and its degree of depth F is 1～2mm; Throat diameter Φ B is Φ 63.5～Φ 65.5mm, and the knuckle r of this place is R1～R3mm; Inclination angle of inclined plane α between aditus laryngis and end face is 28 °～30 °; Firing chamber diameter of phi D is Φ 65.5～Φ 67.5mm, and combustion-chamber depth H is 19.5～21.5mm, and the inner chamber radius R is R7～R9mm, and the diameter of phi C of central boss is Φ 4～Φ 6mm, and boss height F is 8～10mm, and the boss cone angle beta is 24 °～26 °.
Many spray orifices nozzle of the low inertia that adopts the piston of a kind of diesel engine piston of the utility model firing chamber to be equipped with to be complementary with it, small pressure chamber, small aperture, high-pressure electric control rmc monomer pumps etc. are through the oil supply system of optimal design, by control to electronic controlled fuel system fuel supply rate curve, the many spray orifices nozzle that cooperates the small aperture, implement high-pressure injection, adopt rational nozzle cone angle, and to the simulation of intake swirl, can reach the ideal engine performance, the requirement of Euro V emissions is satisfied in toxic emission.
Compare with traditional reducing toroidal combustion chamber, this firing chamber has the inclined-plane that the inclination angle is α, make and formed a bigger inverted cone annulus in the reducing of firing chamber, separate with wall fast after helping the oil bundle to hit wall, thereby reduce HC (hydrocarbon), the carbon smoke exhaust that produces because of wall accumulation fuel oil.The boss of its bottom center is more a lot of greatly than traditional reentrant combustion chamber center projections, can improve air utilization ratio like this, the firing chamber bottom center air motion that has improved conventional construction a little less than, the propellant spray mist of oil is difficult for arriving the shortcoming that air utilization ratio is not high.The effect of strengthening extruding swirl can be played in this firing chamber, and oil, gas rule is on request mixed and burning fully, reaches best oil consumption and exhaust index.Model machine dress carries out testing property with the piston of this firing chamber, and the charge inter cooling electronic controlled diesel can reach European V stage emission standard, and the oil consumption index compares with former design, and is energy-conservation more than 10%.Every index reaches leading domestic level.
Claims (1)
1. diesel engine piston firing chamber, it is characterized in that: designing opening diameter Φ A on the basis of conventional diesel engine reducing toroidal combustion chamber is Φ 80.5～Φ 82.5mm, and its degree of depth F is 1～2mm; Throat diameter Φ B is Φ 63.5～Φ 65.5mm, and the knuckle r of this place is R1～R3mm; Inclination angle of inclined plane α between aditus laryngis and end face is 28 °～30 °; Firing chamber diameter of phi D is Φ 65.5～Φ 67.5mm, and combustion-chamber depth H is 19.5～21.5mm, and the inner chamber radius R is R7～R9mm, and the diameter of phi C of central boss is Φ 4～Φ 6mm, and boss height F is 8～10mm, and the boss cone angle beta is 24 °～26 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205667540U CN201810412U (en) | 2010-10-19 | 2010-10-19 | Diesel engine piston combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205667540U CN201810412U (en) | 2010-10-19 | 2010-10-19 | Diesel engine piston combustion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201810412U true CN201810412U (en) | 2011-04-27 |
Family
ID=43893354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205667540U Expired - Fee Related CN201810412U (en) | 2010-10-19 | 2010-10-19 | Diesel engine piston combustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201810412U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397951A (en) * | 2013-08-06 | 2013-11-20 | 江苏常工动力机械有限公司 | Piston combustion chamber structure |
| CN108488000A (en) * | 2018-03-14 | 2018-09-04 | 东风商用车有限公司 | A kind of burning chamber of diesel engine with water conservancy diversion inclined-plane |
| CN109854359A (en) * | 2018-10-30 | 2019-06-07 | 中国北方发动机研究所(天津) | A kind of eddy flow groove profile combustion chamber suitable for turbulence burning system |
-
2010
- 2010-10-19 CN CN2010205667540U patent/CN201810412U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397951A (en) * | 2013-08-06 | 2013-11-20 | 江苏常工动力机械有限公司 | Piston combustion chamber structure |
| CN108488000A (en) * | 2018-03-14 | 2018-09-04 | 东风商用车有限公司 | A kind of burning chamber of diesel engine with water conservancy diversion inclined-plane |
| CN109854359A (en) * | 2018-10-30 | 2019-06-07 | 中国北方发动机研究所(天津) | A kind of eddy flow groove profile combustion chamber suitable for turbulence burning system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FIRST TRACTOR CO., LTD. Free format text: FORMER OWNER: CHINA YITUO GROUP CO., LTD. Effective date: 20110808 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 471039 LUOYANG, HENAN PROVINCE TO: 471004 LUOYANG, HENAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110808 Address after: 471004 Jianshe Road, Jianxi, Henan, No. 154, Patentee after: First Tractor Co., Ltd. Address before: 471039 No. 39, Xiyuan Road, Jianxi District, Henan, Luoyang Patentee before: China Yituo Group Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20191019 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |