CN103967674B - A kind of diesel oil premixed natural gas nozzle and method of work thereof - Google Patents
A kind of diesel oil premixed natural gas nozzle and method of work thereof Download PDFInfo
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- CN103967674B CN103967674B CN201410182631.XA CN201410182631A CN103967674B CN 103967674 B CN103967674 B CN 103967674B CN 201410182631 A CN201410182631 A CN 201410182631A CN 103967674 B CN103967674 B CN 103967674B
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Abstract
The present invention relates to a kind of diesel oil premixed natural gas nozzle, comprise rock gas needle-valve, mixed gas needle-valve, nozzle head, rock gas needle-valve head and mixed gas needle-valve head form sealing strip; Rock gas needle-valve and mixed gas needle-valve can move up and down along nozzle head inner chamber; Rock gas needle-valve outer surface is combined with mixed gas needle-valve internal surface and forms rock gas passage; Rock gas spray orifice is evenly equipped with bottom mixed gas needle-valve; Described sealing strip is between rock gas passage and rock gas spray orifice; Nozzle head inside has mixed gas spray orifice and fuel gallery, and mixed gas needle-valve outer surface is combined with nozzle head and forms double fuel mixing chamber, and double fuel mixing chamber is communicated with fuel gallery and rock gas spray orifice.The present invention enters firing chamber, improving combustion efficiency after can realizing uniform fuel mixing, improves power of IC engine; Adjustment fuel mixing ratio can be required according to output power of internal combustion engine, improve fuel mixing ratio, in full working scope, obtain excellent Economy, power character and emission performance.
Description
Technical field
The invention belongs to engine fuel supply systems technology field, be specifically related to a kind of diesel oil premixed natural gas nozzle and method of work thereof.
Background technique
Traditional combustion engine generally adopts single fuel combustion to do work, and adopt single-fuel injector pilot fuel device to supply final tache as fuel, its fuel supply system structure and performance are tending towards improving and meet Current internal combustion engines performance requirement.Face the problems such as the environment of exhausted crisis and sternness at petroleum base class A fuel A, require stricter sophisticated design processing request to tradition list fuel supply mode, this also increases fuel supply system and manufactures working service cost.And adopt the gaseous fuels such as the larger rock gas of current storage volume to carry out double fuel supply as auxiliary power fuel, better Economy and emission performance can be obtained, alleviate energy problem further.
Internal-combustion engine adopts in double fuel combustion process, and gaseous fuel is present stage one of the main fuel substituting traditional fuel, gaseous fuel is carried out mixing as auxiliary fuel and mixes that to burn its fuel supply system in application process be one of bi-fuel internal combustion engine key technology.Gaskraftstoffzufuhranlage many employings air inlet pipeline of domestic duel fuel engine developed at present mixes gaseous fuel air feed form, and this burning mode of mixing directly affects engine aspirating system charge air systems.Improving mixture combustion efficiency for reducing gaseous fuel supply to the impact of gas handling system air charge, adopting gaseous fuel supply structure and traditional single-fuel injector pilot fuel device structure assembly fuel combination supply system.By proportioning regulable control mode, fuel combination is sprayed after the meat Homogeneous phase mixing of sparger premix chamber and enter firing chamber, not only increase double fuel mixing like this and mix burning uniformity, and make fuel combustion more fully finally can obtain excellent Economy and good row's characteristic.
Summary of the invention
Content of the present invention is to be solved is that bi-fuel internal combustion engine fuel in combustion chamber mixes uneven technical problem.
Technological scheme of the present invention is: a kind of diesel oil premixed natural gas nozzle, comprises rock gas needle-valve 1, mixed gas needle-valve 2, nozzle head 3, it is characterized in that: rock gas needle-valve 1 head and mixed gas needle-valve 2 head form sealing strip; Rock gas needle-valve 1 and mixed gas needle-valve 2 can move up and down along nozzle head 3 inner chamber; Rock gas needle-valve 1 outer surface is combined with mixed gas needle-valve 2 meat surface and forms rock gas passage 7; Rock gas spray orifice 5 is evenly equipped with bottom mixed gas needle-valve 2; Described sealing strip is between rock gas passage 7 and rock gas spray orifice 5; Nozzle head 3 inside has mixed gas spray orifice 6 and fuel gallery 8, and mixed gas needle-valve 2 outer surface is combined with nozzle head 3 and forms double fuel mixing chamber 4, and double fuel mixing chamber 4 is communicated with fuel gallery 8 and rock gas spray orifice 5.
Beneficial effect of the present invention: the present invention can realize bi-fuel internal combustion engine fuel Homogeneous phase mixing before entering combustion chambers of internal combustion engines, fuel combination sprays with homogeneous mixture form and enters combustion chambers of internal combustion engines participation burning.Adopt double fuel premixing supply mode, change current gaseous fuel based on the fuel supply mode of suction tude supply, thus solve because gas handling system air charge reduces problems such as causing engine combustion efficiency declines, power ascension difficulty; Requirement can be exported according to power of IC engine further by double fuel pre-blend approach and carry out fuel mix-proportion adjustment, improve fuel mixing ratio accuracy, thus all can obtain excellent Economy, power character and emission performance in each operating mode of motor.
Accompanying drawing explanation
Fig. 1 is a kind of diesel oil premixed natural gas nozzle arrangements schematic diagram.
1 rock gas needle-valve, 2 mixed gas needle-valves, 3 nozzle heads, 4 double fuel mixing chambers, 5 rock gas spray orifices, 6 mixed gas spray orifices, 7 rock gas passages, 8 fuel galleries
Embodiment
A kind of diesel oil premixed natural gas nozzle, comprises rock gas needle-valve 1, mixed gas needle-valve 2, nozzle head 3, it is characterized in that: rock gas needle-valve 1 head and mixed gas needle-valve 2 head form sealing strip; Rock gas needle-valve 1 and mixed gas needle-valve 2 can move up and down along nozzle head 3 inner chamber; Rock gas needle-valve 1 outer surface is combined with mixed gas needle-valve 2 internal surface and forms rock gas passage 7; Rock gas spray orifice 5 is evenly equipped with bottom mixed gas needle-valve 2; Described sealing strip is between rock gas passage 7 and rock gas spray orifice 5; Nozzle head 3 inside has mixed gas spray orifice 6 and fuel gallery 8, and mixed gas needle-valve 2 outer surface is combined with nozzle head 3 and forms double fuel mixing chamber 4, and double fuel mixing chamber 4 is communicated with fuel gallery 8 and rock gas spray orifice 5.
Preferred rock gas needle-valve 1 and mixed gas needle-valve 2 adopt spring-like or solenoid valve class device.
The sealing strip of preferred rock gas needle-valve 1 head and mixed gas needle-valve 2 head adopts conical surface seal or ball face sealing.
Preferred rock gas passage 7 is matching gap or pipeline.
1 pair of diesel oil premixed natural gas nozzle operation method is described by reference to the accompanying drawings:
A kind of diesel oil premixed natural gas nozzle operation method, is characterized in that:
The first step: under the effect of external pressure source device, forms high-pressure natural gas respectively, forms high pressure fuel in fuel gallery 8, be full of high pressure fuel in double fuel mixing chamber 4 in rock gas passage 7;
Second step: control rock gas needle-valve 1 lift amount, rock gas needle-valve 1 is promoted, high-pressure natural gas is sprayed by rock gas spray orifice 5 and enters the double fuel mixing chamber 4 being full of high pressure fuel, forms eddy current, completes double fuel mixing;
3rd step: control mixed gas needle-valve 2 lift amount, mixed gas needle-valve 2 is promoted, double fuel mixture is sprayed by the mixed gas spray orifice 6 of nozzle head 3 and enters combustion chambers of internal combustion engines;
4th step: control mixed gas needle-valve 2 lift amount, mixed gas needle-valve 2 is declined, mixed gas spray orifice 6 stops spraying;
5th step: control rock gas needle-valve 1 lift amount, rock gas needle-valve 1 is declined, and rock gas spray orifice 5 stops to double fuel mixing chamber 4 air feed, completes a diesel spray circulation.
Claims (5)
1. a diesel oil premixed natural gas nozzle, comprise rock gas needle-valve (1), mixed gas needle-valve (2), nozzle head (3), it is characterized in that: rock gas needle-valve (1) head and mixed gas needle-valve (2) head form sealing strip; Rock gas needle-valve (1) and mixed gas needle-valve (2) can move up and down along nozzle head (3) inner chamber; Rock gas needle-valve (1) outer surface is combined with mixed gas needle-valve (2) internal surface and forms rock gas passage (7); Mixed gas needle-valve (2) bottom is evenly equipped with rock gas spray orifice (5); Described sealing strip is positioned between rock gas passage (7) and rock gas spray orifice (5); Nozzle head (3) inside has mixed gas spray orifice (6) and fuel gallery (8), mixed gas needle-valve (2) outer surface and nozzle head (3) combine and form double fuel mixing chamber (4), and double fuel mixing chamber (4) is communicated with fuel gallery (8) and rock gas spray orifice (5).
2. diesel oil premixed natural gas nozzle according to claim 1, is characterized in that: described rock gas needle-valve (1) and mixed gas needle-valve (2) adopt spring-like or solenoid valve class device.
3. diesel oil premixed natural gas nozzle according to claim 1, is characterized in that: described sealing strip is conical surface seal or ball face sealing.
4. diesel oil premixed natural gas nozzle according to claim 1, is characterized in that: rock gas passage (7) is matching gap or pipeline.
5. a diesel oil premixed natural gas nozzle operation method, is characterized in that:
The first step: under the effect of external pressure source device, in rock gas passage (7), form high-pressure natural gas respectively, in fuel gallery (8), form high pressure fuel, double fuel mixing chamber is full of high pressure fuel in (4);
Second step: control rock gas needle lift amount, high-pressure natural gas is sprayed by rock gas spray orifice (5) and enters the double fuel mixing chamber (4) being full of high pressure fuel, forms eddy current and completes double fuel mixing;
3rd step: control mixed gas needle-valve (2) lift amount, double fuel mixture is sprayed by the mixed gas spray orifice (6) of nozzle head (3) and enters combustion chambers of internal combustion engines participation burning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410182631.XA CN103967674B (en) | 2014-04-24 | 2014-04-24 | A kind of diesel oil premixed natural gas nozzle and method of work thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410182631.XA CN103967674B (en) | 2014-04-24 | 2014-04-24 | A kind of diesel oil premixed natural gas nozzle and method of work thereof |
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| Publication Number | Publication Date |
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| CN103967674A CN103967674A (en) | 2014-08-06 |
| CN103967674B true CN103967674B (en) | 2016-04-06 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837639A (en) * | 2017-04-13 | 2017-06-13 | 沈阳航空航天大学 | A kind of close collision formula dual fuel engine nozzle assembly |
| CN106968857B (en) * | 2017-04-14 | 2023-02-28 | 无锡职业技术学院 | Gasoline engine fuel injector nozzle |
| CN109826738B (en) * | 2019-02-26 | 2020-10-23 | 一汽解放汽车有限公司 | Dual-fuel injector |
| CN110080915B (en) * | 2019-05-31 | 2021-01-15 | 西安交通大学 | Gas/liquid dual-fuel low-pressure direct injection system |
| CN110848059B (en) * | 2019-12-02 | 2021-09-07 | 北京交通大学 | Combustion-supporting injection device and method for internal combustion engine and internal combustion engine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100594300C (en) * | 2005-11-04 | 2010-03-17 | 吉林大学 | Double-liquid nozzle |
| US8322325B2 (en) * | 2006-06-29 | 2012-12-04 | The University Of British Columbia | Concurrent injection of liquid and gaseous fuels in an engine |
| KR20090012056A (en) * | 2007-07-27 | 2009-02-02 | 베르트질레 슈바이츠 악티엔게젤샤프트 | An injection nozzle for fuel |
| US8967502B2 (en) * | 2011-05-11 | 2015-03-03 | Caterpillar Inc. | Dual fuel injector and engine using same |
| CN102705120B (en) * | 2012-06-19 | 2015-03-11 | 哈尔滨工程大学 | Dual-fuel electric control monomer ejector |
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