CN103967674A - Diesel premixing natural gas nozzle and working method thereof - Google Patents
Diesel premixing natural gas nozzle and working method thereof Download PDFInfo
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- CN103967674A CN103967674A CN201410182631.XA CN201410182631A CN103967674A CN 103967674 A CN103967674 A CN 103967674A CN 201410182631 A CN201410182631 A CN 201410182631A CN 103967674 A CN103967674 A CN 103967674A
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Abstract
The invention relates to a diesel premixing natural gas nozzle. The diesel premixing natural gas nozzle comprises a natural gas needle valve, a mixed gas needle valve and a nozzle head. A sealing zone is formed by the head of the natural gas needle valve and the head of the mixed gas needle valve. The natural gas needle valve and the mixed gas needle valve can move up and down along an inner cavity of the nozzle head. A natural gas channel is formed by combining the outer surface of the natural gas needle valve and the inner surface of the mixed gas needle valve. Natural gas spraying holes are evenly distributed in the bottom of the mixed gas needle valve. The sealing zone is located between the natural gas channel and the natural gas spraying holes. The nozzle head is internally provided with mixed gas spraying holes and a fuel channel. A double-fuel mixing cavity is formed by combining the outer surface of the mixed gas needle valve and the nozzle head, and is communicated with the fuel channel and the natural gas spraying holes. By means of the diesel premixing natural gas nozzle, fuels can be evenly mixed before entering a combustion chamber, the burning efficiency and the power of an internal combustion engine can be improved, the fuel mixture proportion can be adjusted according to the output power requirements of the internal combustion engine, the fuel mixture proportion can be improved, and superior economy, power performance and emission performance can be achieved under the total working condition.
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 acting, adopts single-fuel injector pilot fuel device to supply with final tache as fuel, and its fuel supply system structure and performance are tending towards improving and meet current engine performance requirement.At petroleum base class A fuel A, face exhausted crisis and the severe problems such as environment, tradition list fuel supply mode is required to have stricter precision design processing request, this has also strengthened fuel supply system and has manufactured working service cost.And adopt the gaseous fuels such as rock gas that current storage volume is larger to carry out double fuel supply as auxiliary power fuel, and can obtain better Economy and emission performance, further alleviate energy problem.
Internal-combustion engine adopts in double fuel combustion process, and gaseous fuel is one of main fuel that present stage substitutes traditional fuel, mixes that to mix its fuel supply system in burning application process be one of bi-fuel internal combustion engine key technology using gaseous fuel as auxiliary fuel.The gaskraftstoffzufuhranlage of the domestic duel fuel engine of developing at present adopts air inlet pipeline to mix gaseous fuel air feed form more, and this burning mode of mixing directly affects engine aspirating system charge air systems.For having reduced gaseous fuel, supply with the impact of gas handling system air charge and improve mixture combustion efficiency, adopting gaseous fuel supply structure and traditional single-fuel injector pilot fuel device structure assembly fuel combination supply system.After regulating control mode that fuel combination is evenly mixed in sparger premix chamber by proportioning, spray and enter firing chamber, so not only improved double fuel and mixed and to mix burning uniformity, and made fuel combustion more fully finally can obtain good 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 is mixed inhomogeneous technical problem.
Technological scheme of the present invention is: a kind of diesel oil premixing rock gas nozzle, comprise rock gas needle-valve 1, mixed gas needle-valve 2, nozzle head 3, and it is characterized in that: rock gas needle-valve 1 head and mixed gas needle-valve 2 heads form sealing strip 9; Rock gas needle-valve 1 and mixed gas needle-valve 2 can move up and down along nozzle head 3 inner chambers; Rock gas needle-valve 1 outer surface is combined with mixed gas needle-valve 2 internal surfaces and is formed rock gas passage 7; Mixed gas needle-valve 2 bottoms are evenly equipped with rock gas spray orifice 5; Described sealing strip 9 is between rock gas passage 7 and rock gas spray orifice 5; Nozzle head 3 inside have mixed gas spray orifice 6 and fuel gallery 8, and mixed gas needle-valve 2 outer surfaces and nozzle head 3 are in conjunction with forming 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 and evenly mix before entering combustion chambers of internal combustion engines, fuel combination sprays and enters combustion chambers of internal combustion engines participation burning with homogeneous mixture form.Adopt double fuel premixing supply mode, changed current gaseous fuel and take suction tude supply as main fuel supply mode, thereby solve because gas handling system air charge reduces, cause the problems such as engine combustion efficiency decline, power ascension difficulty; By double fuel pre-blend approach, can further according to power of IC engine output, require to carry out the adjustment of fuel mixing ratio, improve fuel mixing ratio accuracy, thereby all can obtain good 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 jet blower heads, 4 double fuel mixing chambers, 5 rock gas spray orifices, 6 mixed gas spray orifices, 7 rock gas passages, 8 fuel galleries, 9 sealing strips
Embodiment
A diesel oil premixing rock 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 heads form sealing strip 9; Rock gas needle-valve 1 and mixed gas needle-valve 2 can move up and down along nozzle head 3 inner chambers; Rock gas needle-valve 1 outer surface is combined with mixed gas needle-valve 2 internal surfaces and is formed rock gas passage 7; Mixed gas needle-valve 2 bottoms are evenly equipped with rock gas spray orifice 5; Described sealing strip 9 is between rock gas passage 7 and rock gas spray orifice 5; Nozzle head 3 inside have mixed gas spray orifice 6 and fuel gallery 8, and mixed gas needle-valve 2 outer surfaces and nozzle head 3 are in conjunction with forming double fuel mixing chamber 4, and double fuel mixing chamber 4 is communicated with fuel gallery 8 and rock gas spray orifice 5.
Preferably rock gas needle-valve 1 and mixed gas needle-valve 2 adopt spring-like or solenoid valve class device.
Preferably the sealing strip 9 of rock gas needle-valve 1 head and mixed gas needle-valve 2 heads adopts conical surface seal or ball face sealing.
Preferably rock gas passage 7 is matching gap or pipeline.
1 pair of diesel oil premixing rock gas nozzle method of work is described by reference to the accompanying drawings:
A diesel oil premixing rock gas nozzle method of work, is characterized in that:
The first step: externally under the effect of pressure source device, respectively at the interior formation high-pressure natural gas of rock gas passage 7,8 form high pressure fuels in fuel gallery, be full of high pressure fuel in double fuel mixing chamber 4;
Second step: control rock gas needle-valve 1 lift amount, rock gas needle-valve 1 is promoted, high-pressure natural gas is sprayed and entered the double fuel mixing chamber 4 that is full of high pressure fuel by rock gas spray orifice 5, forms eddy current, completes double fuel and mixes;
The 3rd step: control mixed gas needle-valve 2 lift amount, mixed gas needle-valve 2 is promoted, double fuel mixture enters combustion chambers of internal combustion engines by mixed gas spray orifice 6 injections of nozzle head 3;
The 4th step: control mixed gas needle-valve 2 lift amount, mixed gas needle-valve 2 is declined, mixed gas spray orifice 6 stops spraying;
The 5th step: control rock gas needle-valve 1 lift amount, rock gas needle-valve 1 is declined, 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 premixing rock 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 (9); 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 is formed rock gas passage (7); Mixed gas needle-valve (2) bottom is evenly equipped with rock gas spray orifice (5); Described sealing strip (9) 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) are in conjunction with forming 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 premixing rock 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 premixing rock gas nozzle according to claim 1, is characterized in that: described sealing strip (9) is conical surface seal or ball face sealing.
4. diesel oil premixing rock gas nozzle according to claim 1, is characterized in that: rock gas passage (7) is matching gap or pipeline.
5. a diesel oil premixing rock gas nozzle method of work, is characterized in that:
The first step: externally, under the effect of pressure source device, form respectively high-pressure natural gas, form high pressure fuel in rock gas passage (7) in fuel gallery (8), 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 and entered the double fuel mixing chamber (4) that is full of high pressure fuel by rock gas spray orifice (5), forms eddy current and completes double fuel and mix;
The 3rd step: control mixed gas needle-valve (2) lift amount, double fuel mixture enters combustion chambers of internal combustion engines participation burning by mixed gas spray orifice (6) injection of nozzle head (3).
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 |
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| 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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| CN103967674A true CN103967674A (en) | 2014-08-06 |
| CN103967674B CN103967674B (en) | 2016-04-06 |
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Cited By (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 |
| CN106968857A (en) * | 2017-04-14 | 2017-07-21 | 无锡职业技术学院 | Petrol engine fuel injector nozzle |
| CN109826738A (en) * | 2019-02-26 | 2019-05-31 | 一汽解放汽车有限公司 | A kind of dual fuel injector |
| CN110080915A (en) * | 2019-05-31 | 2019-08-02 | 西安交通大学 | A kind of gas/liquid double fuel low pressure direct injection system |
| CN110848059A (en) * | 2019-12-02 | 2020-02-28 | 北京交通大学 | Combustion-supporting injection device and method for internal combustion engine and internal combustion engine |
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| CN1766304A (en) * | 2005-11-04 | 2006-05-03 | 吉林大学 | Double-liquid nozzle |
| WO2008000095A1 (en) * | 2006-06-29 | 2008-01-03 | The University Of British Columbia | Concurrent injection of liquid and gaseous fuels in an engine |
| CN101354000A (en) * | 2007-07-27 | 2009-01-28 | 瓦特西拉瑞士股份有限公司 | Injection nozzle for fuel |
| CN102705120A (en) * | 2012-06-19 | 2012-10-03 | 哈尔滨工程大学 | Dual-fuel electric control monomer ejector |
| US20120285417A1 (en) * | 2011-05-11 | 2012-11-15 | Caterpillar Inc. | Dual Fuel Injector And Engine Using Same |
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2014
- 2014-04-24 CN CN201410182631.XA patent/CN103967674B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1766304A (en) * | 2005-11-04 | 2006-05-03 | 吉林大学 | Double-liquid nozzle |
| WO2008000095A1 (en) * | 2006-06-29 | 2008-01-03 | The University Of British Columbia | Concurrent injection of liquid and gaseous fuels in an engine |
| CN101354000A (en) * | 2007-07-27 | 2009-01-28 | 瓦特西拉瑞士股份有限公司 | Injection nozzle for fuel |
| US20120285417A1 (en) * | 2011-05-11 | 2012-11-15 | Caterpillar Inc. | Dual Fuel Injector And Engine Using Same |
| CN102705120A (en) * | 2012-06-19 | 2012-10-03 | 哈尔滨工程大学 | Dual-fuel electric control monomer ejector |
Cited By (6)
| 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 |
| CN106968857A (en) * | 2017-04-14 | 2017-07-21 | 无锡职业技术学院 | Petrol engine fuel injector nozzle |
| CN109826738A (en) * | 2019-02-26 | 2019-05-31 | 一汽解放汽车有限公司 | A kind of dual fuel injector |
| CN109826738B (en) * | 2019-02-26 | 2020-10-23 | 一汽解放汽车有限公司 | Dual-fuel injector |
| CN110080915A (en) * | 2019-05-31 | 2019-08-02 | 西安交通大学 | A kind of gas/liquid double fuel low pressure direct injection system |
| CN110848059A (en) * | 2019-12-02 | 2020-02-28 | 北京交通大学 | Combustion-supporting injection device and method for internal combustion engine and internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103967674B (en) | 2016-04-06 |
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