CN203146183U - Burning-controllable oil injecting nozzle matching part - Google Patents
Burning-controllable oil injecting nozzle matching part Download PDFInfo
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- CN203146183U CN203146183U CN 201320131242 CN201320131242U CN203146183U CN 203146183 U CN203146183 U CN 203146183U CN 201320131242 CN201320131242 CN 201320131242 CN 201320131242 U CN201320131242 U CN 201320131242U CN 203146183 U CN203146183 U CN 203146183U
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Abstract
The utility model discloses a burning-controllable oil injecting nozzle matching part which comprises an accurate matching part formed by a needle valve and a needle valve body. The burning-controllable oil injecting nozzle matching part is characterized in that the needle valve body of the oil injecting nozzle is provided with a plurality of layers of nozzle holes, and an umbrella-shaped taper angle of an upper layer of nozzle holes is larger than that of a lower layer of nozzle holes. According to the burning-controllable oil injecting nozzle matching part, the layers of nozzle holes are formed in the head portion of the needle valve, and the nozzle holes have different diameters. Oil bundle penetrating distances are controlled through the different diameters. An oil bundle with a long penetrating distance corresponds to a space with a large diameter on the upper portion of a combustion chamber, and an oil bundle with a short penetrating distance corresponds to a space with a relatively-small diameter on the lower portion of the combustion chamber. Due to the difference of the penetrating distances, under the condition that sprayed mist is not in contact with a wall, air in different zones in the combustion chamber is fully used. The diameters of the upper layer of nozzle holes and the lower layer of nozzle holes are different, so that sprayed mist weights of the upper layer and the lower layer are different, ignition time by compressing of the mist is different, and accordingly the purpose that combustible mixed air is ignited according to different zones and different time is achieved, pressure raising ratio is controlled, and knocking is avoided.
Description
Technical field
The utility model relates to a kind of internal combustion engine fuel injection system field, is specifically related to a kind of controlled injector nozzle matching parts that burns.
Background technique
In the research and development of burning controlling technology, spray into after volatile, hypoergia fuel (as: gasoline, ethanol, methyl alcohol) enters in the cylinder from intake duct, because the characteristic of himself can not compressedly be caught fire, too rare being difficult for lights and plug ignition can run into mixed gas, even under some operating mode, can light, also can run into the problem of extinguishing in the flame propagation, therefore also need adopt at in-cylinder injection high response fuel (as diesel oil), rely on its compression ignition to ignite by the flammable premixed gas of intake port injection preparation.But the in-cylinder direct injection oil nozzle of traditional combustion mode mostly is the individual layer hole type nozzle, or not from the controlled multilayer hole type nozzle that designs that burns.In case in-cylinder direct injection fuel oil compression ignition like this, the flammable premixed gas of being prepared by gas-duct jetting around will igniting simultaneously, burn very fast, the rate of pressure rise is big.The flammable premixing tolerance of being prepared by gas-duct jetting when load increases is along with increase, the air-fuel mixture amount of just igniting simultaneously just increases, just very big in the rate of pressure rise that reaches a certain amount of after-combustion generation like this, can cause engine knock, this is very unfavorable to motor, rough running can influence the travelling comfort of driving, also can reduce the reliability of motor.
The spray orifice that is provided with bilayer or multilayer at the needle-valve body head is also arranged in the prior art, the mutual intersection-type collision of the bundle of oil up and down of ejection has shortened the penetration distance of spraying, but have a large amount of polymerization of fluid drops together in the oil bundle atomization process, this will cause that the smoke intensity in the discharging raises.In addition, form be similar to a branch of behind the oil bundle intersection-type collision, bigger with the difficulty of combustion-chamber shape coupling, the flexibility of injection is restricted.
The model utility content
The utility model purpose is to provide a kind of fuel oil of cylinder internal spraying that can make can reach subregion, timesharing compression ignition in the bags at the defective of prior art, and the controlled injector nozzle matching parts of burning of the inflammable mixture of being prepared by gas-duct jetting around igniting.
The utility model adopts following technological scheme for achieving the above object:
A kind of controlled injector nozzle matching parts that burns comprises the precision pair that needle-valve and needle-valve body are formed, and it is characterized in that: the needle-valve body of described oil nozzle has the multilayer spray orifice, and the umbrella cone angle of upper strata spray orifice is greater than the umbrella cone angle of lower floor's spray orifice.
It is further characterized in that: the injection diameter of upper strata spray orifice is greater than the diameter of lower floor's spray orifice.
Further: described upper and lower layers nozzle hole number is identical or different.
Described upper and lower layers spray orifice alignment is arranged or is staggered.
The described spray orifice number of plies is the 2-5 layer, with the adaptation that is complementary of the shape of firing chamber.
The utility model arranges the multilayer spray orifice and adopts different injection diameters at the needle-valve body head.The penetration distance of the big then oil of injection diameter bundle is also longer, and the little then penetration distance of diameter is also shorter.The bigger space of oil bundle respective combustion chamber upper diameter of longer penetration distance, and the short less relatively space of oil bundle respective combustion chamber lower diameter of penetration distance has taken full advantage of the air of zones of different in the firing chamber under the situation that the difference of penetration distance makes spraying not be rebuffed.Upper and lower layers injection diameter difference makes that also the atomization quality of upper and lower layers is different, the moment of their compression ignitions is also just different, has reached the ignite purpose of inflammable mixture of subregion, timesharing like this, has just controlled the rate of pressure rise and has suppressed pinking.
Description of drawings
Fig. 1 is injector nozzle matching parts atomize schematic representation of the present utility model.
Fig. 2 is the partial enlarged drawing of the utility model needle-valve body head spray orifice.
Fig. 3 is embodiment's schematic representation that the utility model cooperates the firing chamber.
Embodiment
Be that example describes concrete structure and the use condition thereof that the utility model proposes in detail below in conjunction with accompanying drawing with double-deck spray orifice.
Fig. 1,2 injector nozzle matching parts are made up of needle-valve body 1 and needle-valve 2, and needle-valve body 1 head is provided with upper strata spray orifice 3 and lower floor's spray orifice 4.Among the figure, the umbrella cone angle of upper strata spray orifice 3 is greater than the umbrella cone angle of lower floor's 4 spray orifices.The upper strata oil bundle 9 of upper strata spray orifice 3 corresponding ejections, lower floor's oil bundle 10 of lower floor's spray orifice 4 and corresponding ejection.Upper strata oil bundle 9 and lower floor's oil bundle 10 do not intersect.The oil nozzle precision pair comprises piston 5, cylinder head 6, head gasket 7, cylinder liner 8 in the layout of firing chamber as shown in Figure 3.
The light volatile fuel of intake port injection with enter in the cylinder experience compression process when piston stroking upward, but this fuel is difficult to compression ignition, will adopt the compression ignition of in-cylinder direct injection diesel oil to ignite like this premixed gas that intake duct prepares after air mixes.Be full of flammable premixed gas in the firing chamber this moment, a large amount of flammable premixed gas if the traditional in-cylinder direct injection oil nozzle of employing will ignite simultaneously, along with this part the premixing tolerance of increase of loading also increases, the result is that the rate of pressure rise constantly increases, and finally causes pinking.
After adopting the utility model injector nozzle matching parts, as shown in Figure 3 because upper strata oil bundle 9 faces toward the firing chamber upper area, lower floor's oil bundle 10 is facing to the firing chamber lower area, and spray orifice 3 diameters in upper strata are greater than lower floor's spray orifice 4 diameters, make the oil bundle of in-cylinder direct injection can as far as possible all cover whole combustion chamber regions like this, there is the difference of upper and lower layers injection diameter to make that their atomization quality is also different again, the moment of compression ignition is also different like this, thereby reach subregion, timesharing comes the indoor inflammable mixture of being prepared by gas-duct jetting of pilot combustion, final realization combustion process is controlled, and has reduced the rate of pressure rise to suppress pinking.
Simultaneously, adopt the spray orifice design of multilayer up and down, under identical fuel injection quantity, can reduce injection diameter and improve atomization quality reduction particulate emission, simultaneously the small aperture can obtain short penetration distance, has reduced that oily bundle strikes the firing chamber and cylinder wall surface causes the higher risk of HC discharging.Under identical fuel injection quantity, adopt many spray orifices technology, can shorten oil injection duration, this brings more flexibility for the time control of multi-injection.
Claims (5)
1. the injector nozzle matching parts that burning is controlled comprises the precision pair that needle-valve and needle-valve body are formed, and it is characterized in that: the needle-valve body of described oil nozzle has the multilayer spray orifice, and the umbrella cone angle of upper strata spray orifice is greater than the umbrella cone angle of lower floor's spray orifice.
2. the controlled injector nozzle matching parts of burning according to claim 1, it is characterized in that: the injection diameter of upper strata spray orifice is greater than the diameter of lower floor's spray orifice.
3. the controlled injector nozzle matching parts of burning according to claim 1 and 2, it is characterized in that: described upper and lower layers nozzle hole number is identical or different.
4. the controlled injector nozzle matching parts of burning according to claim 1 and 2 is characterized in that: upper and lower layers spray orifice alignment arrangement or staggered.
5. the controlled injector nozzle matching parts of burning according to claim 1 and 2, it is characterized in that: the described spray orifice number of plies is the 2-5 layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320131242 CN203146183U (en) | 2013-03-21 | 2013-03-21 | Burning-controllable oil injecting nozzle matching part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320131242 CN203146183U (en) | 2013-03-21 | 2013-03-21 | Burning-controllable oil injecting nozzle matching part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203146183U true CN203146183U (en) | 2013-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 201320131242 Expired - Lifetime CN203146183U (en) | 2013-03-21 | 2013-03-21 | Burning-controllable oil injecting nozzle matching part |
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| CN (1) | CN203146183U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612875A (en) * | 2014-12-02 | 2015-05-13 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Novel high flow injector nozzle matching parts of common rail injector |
| CN105781839A (en) * | 2016-04-29 | 2016-07-20 | 吉林大学 | Double-needle-valve electronically-controlled fuel injector with double layers of orifices |
| CN106286058A (en) * | 2016-07-29 | 2017-01-04 | 中国北方发动机研究所(天津) | A kind of fuel injector |
| CN108167101A (en) * | 2017-12-28 | 2018-06-15 | 沈阳航空航天大学 | A kind of air-fuel mixture quality optimization method of diesel engine |
| CN112682235A (en) * | 2020-12-21 | 2021-04-20 | 中国北方发动机研究所(天津) | Engine combustion system based on non-uniform-aperture nozzle |
| CN112780465A (en) * | 2021-03-04 | 2021-05-11 | 哈尔滨工程大学 | Dual-fuel engine adopting gas high-pressure direct injection and stepped spray hole oil injector and combustion organization method thereof |
| CN112780464A (en) * | 2021-03-04 | 2021-05-11 | 哈尔滨工程大学 | Dual-fuel engine of stepped spray hole structure oil injector and combustion organization method thereof |
| CN112780463A (en) * | 2021-03-04 | 2021-05-11 | 哈尔滨工程大学 | Dual-fuel engine adopting dual-gas spray pipe and step spray hole oil sprayer and combustion organization method thereof |
| CN114294091A (en) * | 2021-12-17 | 2022-04-08 | 中国北方发动机研究所(天津) | Combustion system that side oil spout multilayer water conservancy diversion was lighted |
| CN114353120A (en) * | 2021-12-17 | 2022-04-15 | 中国北方发动机研究所(天津) | Camber surface diversion type combustion chamber suitable for multi-aperture nozzle |
-
2013
- 2013-03-21 CN CN 201320131242 patent/CN203146183U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612875A (en) * | 2014-12-02 | 2015-05-13 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Novel high flow injector nozzle matching parts of common rail injector |
| CN105781839A (en) * | 2016-04-29 | 2016-07-20 | 吉林大学 | Double-needle-valve electronically-controlled fuel injector with double layers of orifices |
| CN106286058A (en) * | 2016-07-29 | 2017-01-04 | 中国北方发动机研究所(天津) | A kind of fuel injector |
| CN108167101A (en) * | 2017-12-28 | 2018-06-15 | 沈阳航空航天大学 | A kind of air-fuel mixture quality optimization method of diesel engine |
| CN112682235A (en) * | 2020-12-21 | 2021-04-20 | 中国北方发动机研究所(天津) | Engine combustion system based on non-uniform-aperture nozzle |
| CN112780465A (en) * | 2021-03-04 | 2021-05-11 | 哈尔滨工程大学 | Dual-fuel engine adopting gas high-pressure direct injection and stepped spray hole oil injector and combustion organization method thereof |
| CN112780464A (en) * | 2021-03-04 | 2021-05-11 | 哈尔滨工程大学 | Dual-fuel engine of stepped spray hole structure oil injector and combustion organization method thereof |
| CN112780463A (en) * | 2021-03-04 | 2021-05-11 | 哈尔滨工程大学 | Dual-fuel engine adopting dual-gas spray pipe and step spray hole oil sprayer and combustion organization method thereof |
| CN114294091A (en) * | 2021-12-17 | 2022-04-08 | 中国北方发动机研究所(天津) | Combustion system that side oil spout multilayer water conservancy diversion was lighted |
| CN114353120A (en) * | 2021-12-17 | 2022-04-15 | 中国北方发动机研究所(天津) | Camber surface diversion type combustion chamber suitable for multi-aperture nozzle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170626 Address after: 214063 Jiangsu province Binhu District of Wuxi City Qian Rong Lu No. 15 Patentee after: China Faw Co.,Ltd. Address before: 214063 Jiangsu province Binhu District of Wuxi City Qian Rong Lu No. 15 Patentee before: CHINA FAW CORP LTD WUXI FUEL INJECTION EQUIPMENT RES INST,CHINA FIRST AUTOMOBILE WORKS |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |
|
| CX01 | Expiry of patent term |