CN105822462A - Inlet spray pipe of natural gas engine - Google Patents
Inlet spray pipe of natural gas engine Download PDFInfo
- Publication number
- CN105822462A CN105822462A CN201610312156.2A CN201610312156A CN105822462A CN 105822462 A CN105822462 A CN 105822462A CN 201610312156 A CN201610312156 A CN 201610312156A CN 105822462 A CN105822462 A CN 105822462A
- Authority
- CN
- China
- Prior art keywords
- spray
- natural gas
- center
- shower nozzle
- orifices
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0278—Port fuel injectors for single or multipoint injection into the air intake system
-
- 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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles (AREA)
Abstract
The invention relates to an inlet spray pipe of a natural gas engine. The inlet spray pipe is composed of an L-shaped pipe body and a spray head which is fixedly connected to one end of the pipe body. The diameter of the spray head is equal to that of the pipe body. A thread connected with a gas source pipeline is arranged at the other end of the pipe body. The outlet end of the spray head comprises a center spray hole formed in the axis of the spray head and two to four side spray holes symmetrically distributed in the periphery of the center spray hole. The included angles between the center lines of the side spray holes and the axis of the spray head range from 30 degrees to 80 degrees. The sum of the aperture of the center spray hole and the aperture of the side spray holes is equal to the area of the aperture of the pipe body. The inlet spray pipe is simple in structure and low in cost. The problems that mixed gas formed by an existing natural gas inlet channel spray head is low in evenness, and the gas inlet efficiency is low are solved. Meanwhile, a certain foundation is laid for achieving electronic control over distribution of different mixed gases in a cylinder, a gas inlet channel injection direction variable technology and a spray hole number variable technology.
Description
Technical field
The present invention relates to a kind of jet pipe being applied on natural gas engine, it is more particularly related to a kind of natural gas engine air intake duct jet pipe.
Background technology
Vehicle exhaust is one of factor causing this environmental problem, as a kind of engine replacing fuel, natural gas, because there is the advantages such as combustion cleaning, low price and aboundresources and by the extensive concern of countries in the world.Not only greatly reduce the content of particulates emission in the discharge of soot and air after natural gas engine application, but also alleviate energy crisis.At present, natural gas engine commonly used air intake duct multi-point injection mode, and presently used natural gas jet pipe is all to spray along air flue axis direction, up-to-date result of study shows, when fuel enters cylinder in the way of air intake duct multi-point injection, just as in-cylinder direct-jet, combustion gas and air non-uniform mixing.The difference of injection direction and the change of spray orifice number, mixed gas state in different cylinders can be formed, when the injection of combustion gas collides or angled with air flow with air intake duct wall or inlet valve, then can form relatively uniform mixed gas in cylinder, therefore combustion gas spray pattern in air intake duct and spray orifice number will greatly affect the concentration distribution of In-Cylinder Flow and fuel, and this will produce strong influence to engine combustion and emission performance.
Also the research to engine charge jet pipe is expanded both at home and abroad at present, notification number is that CN104775952A patent " 45 degree of jet pipes of dual fuel engine air intake duct " discloses a kind of dual fuel engine air intake duct jet pipe, and a feature therein is: four nozzle exits of horizontal tube are evenly distributed on the surrounding of nozzle exit block.But the spray orifice of this device is distributed only over surrounding, jet pipe center, without spray orifice, result in mixture homogeneity the highest, result also in higher intake resistance simultaneously so that charging efficiency reduces.
Summary of the invention
The present invention is for overcoming current natural gas engine air intake duct jet pipe mixture homogeneity the highest, and the defect that intake efficiency is low, proposes the natural gas engine air intake duct jet pipe of a kind of improved structure.
Natural gas engine air intake duct jet pipe of the present invention, is made up of L-type body and the shower nozzle isometrical with body being connected on this body one end, and the other end of this body is provided with the screw thread being connected with gas source pipe；
The port of export of described shower nozzle comprises a center of orifices being arranged on shower nozzle axial line and is symmetrically distributed in 2 to 4 other spray orifices of this center of orifices periphery, and the centrage of described other spray orifice and the angle of shower nozzle axial line are 30 °～80 °；The aperture area sum of center of orifices and other spray orifice is equal to the aperture area of body.
The aperture area of each other spray orifice of described shower nozzle is the most identical with shape.
Natural gas engine air intake duct jet pipe of the present invention has a following obvious technique effect:
Natural gas engine air intake duct jet pipe the most of the present invention can realize natural gas engine gas injection direction parallel with air intake duct axis direction and angled spray simultaneously, not only defines the gaseous mixture that the uniformity is of a relatively high, also improves intake efficiency.
The other spray orifice that natural gas engine air intake duct jet pipe the most of the present invention can process shower nozzle according to the actual requirements realizes along air intake duct axis direction eject position and the change in direction, and the Electronic Control for intake port injection direction-agile technology and spray orifice number variable technique has established certain basis.
In natural gas engine air intake duct jet pipe the most of the present invention can realize different cylinders by making different shower nozzles, gaseous mixture is distributed, and then provides technical support for gaseous mixture distribution in probing into natural gas engine difference cylinder to the impact of engine performance.
Natural gas engine air intake duct jet pipe the most of the present invention only needs special shower nozzle, and other all can be cost-effective from buying on the market, and research and development are simple simultaneously, the low cost tried out.
Accompanying drawing explanation
Fig. 1 is the front view of natural gas engine air intake duct jet pipe of the present invention；
Fig. 2 is the port of export side schematic view of shower nozzle 2 shown in Fig. 1；
Fig. 3 is the port of export side schematic view with another kind of nozzle structure；
Fig. 4 is the port of export side schematic view with another nozzle structure.
Detailed description of the invention
The present invention is described in further detail by the embodiment be given below in conjunction with accompanying drawing.
Embodiment 1
With reference to Fig. 1,2, a kind of natural gas engine air intake duct jet pipe, be made up of L-type body (1) and the shower nozzle (2) isometrical with body being connected on this body one end, the other end of this body is provided with and the screw thread of source of the gas pipeline bolt；
The port of export of described shower nozzle comprises a center of orifices being arranged on shower nozzle axial line (A) and is symmetrically distributed in 2 other spray orifices (B) of this center of orifices periphery, and the described centrage of other spray orifice is 30 °～80 ° with the angle (β) of the axial line of shower nozzle；The shape of 2 other spray orifices is identical with aperture area, and the aperture area sum of center of orifices and 2 other spray orifices is equal to the aperture area of body.
Embodiment 2
A kind of natural gas engine air intake duct jet pipe, is made up of L-type body (1) and the shower nozzle (2) isometrical with body being connected on this body one end, and the other end of this body is provided with and the screw thread of source of the gas pipeline bolt；
As shown in Figure 3, the port of export of described shower nozzle comprises a center of orifices being arranged on shower nozzle axial line (A) and is symmetrically distributed in 3 other spray orifices (B) of this center of orifices periphery, and the described other centrage of spray orifice is 30 °～80 ° with the angle (β) of shower nozzle axial line；The shape of 3 other spray orifices is identical with aperture area, and the aperture area sum of center of orifices and 3 other spray orifices is equal to the aperture area of body.
Embodiment 3
A kind of natural gas engine air intake duct jet pipe, is made up of L-type body (1) and the shower nozzle (2) isometrical with body being connected on this body one end, and the other end of this body is provided with and the screw thread of source of the gas pipeline bolt；
As shown in Figure 4, the port of export of described shower nozzle comprises a center of orifices being arranged on shower nozzle axial line (A) and is symmetrically distributed in 4 other spray orifices (B) of this center of orifices periphery, and the described other centrage of spray orifice is 30 °～80 ° with the angle (β) of shower nozzle axial line；The shape of 4 other spray orifices is identical with aperture area, and the aperture area sum of center of orifices and 4 other spray orifices is equal to the aperture area of body.
The operation principle of described natural gas engine air intake duct jet pipe:
During natural gas engine air intake duct jet pipe of the present invention work, the centrage of the other spray orifice of described natural gas engine air intake duct jet pipe shower nozzle is at an angle of with air flue axis, the axis of symmetry of center of orifices substantially overlaps with air flue axis, so natural gas can carry out sufficient premixing with air after entering air intake duct.
Natural gas realizes being at an angle of with air flue axis carrying out porous course of injection:
During work, natural gas enters natural gas engine air intake duct jet pipe from electromagnetic valve through nozzle entry 2 and arrives shower nozzle, then air intake duct is entered by angled air intake duct four wall and the center of orifices of tiltedly hitting of other spray orifice and air flue axis along air flue axis, finally all it is mixed in cylinder with air, i.e. achieve angled with air flue axis and parallel direction the porous of natural gas to spray, obtain gaseous mixture and of a relatively high intake efficiency in the relatively good cylinder of the uniformity.
Claims (2)
1. a natural gas engine air intake duct jet pipe, is made up of L-type body and the shower nozzle isometrical with body being connected on this body one end, and the other end of this body is provided with the screw thread being connected with gas source pipe, it is characterised in that:
The port of export of described shower nozzle comprises a center of orifices being arranged on shower nozzle axial line and is symmetrically distributed in 2 to 4 other spray orifices of this center of orifices periphery, and the centrage of described other spray orifice and the angle of shower nozzle axial line are 30 °～80 °；The aperture area sum of center of orifices and other spray orifice is equal to the aperture area of body.
2. according to the natural gas engine air intake duct jet pipe shone described in claim 1, it is characterised in that the aperture area of each other spray orifice of described shower nozzle is the most identical with shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610312156.2A CN105822462A (en) | 2016-05-12 | 2016-05-12 | Inlet spray pipe of natural gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610312156.2A CN105822462A (en) | 2016-05-12 | 2016-05-12 | Inlet spray pipe of natural gas engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105822462A true CN105822462A (en) | 2016-08-03 |
Family
ID=56528664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610312156.2A Pending CN105822462A (en) | 2016-05-12 | 2016-05-12 | Inlet spray pipe of natural gas engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105822462A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404121A (en) * | 2018-11-30 | 2019-03-01 | 中国船舶重工集团公司第七研究所 | Tonifying Qi Effuser device and diesel engine with it |
| CN110318911A (en) * | 2019-06-26 | 2019-10-11 | 哈尔滨工程大学 | A kind of natural gas engine gas injection apparatus with fountain nozzle arrangements |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11200953A (en) * | 1998-01-19 | 1999-07-27 | Nissan Motor Co Ltd | Injector of cng engine |
| CN2356152Y (en) * | 1999-02-08 | 1999-12-29 | 西安交通大学 | Gas fuel manifold mixer for double fuel engine |
| CN201215046Y (en) * | 2008-07-09 | 2009-04-01 | 重庆红旗缸盖制造有限公司 | Natural gas multi-point spraying apparatus for inlet manifold subassembly of automobile engine |
| CN203532100U (en) * | 2013-09-24 | 2014-04-09 | 吉林大学 | Device enabling fuel gas spraying direction and number of spray holes to be variable |
| WO2015075935A1 (en) * | 2013-11-21 | 2015-05-28 | 株式会社デンソー | Fuel injection device |
| CN204591546U (en) * | 2015-05-05 | 2015-08-26 | 吉林大学 | Duel fuel engine intake duct 45 degree of four hole jet pipe |
| CN204827715U (en) * | 2015-05-25 | 2015-12-02 | 哈尔滨工程大学 | Gaseous fuel or dual -fuel engine multiple aperture STREAMING gas burner |
-
2016
- 2016-05-12 CN CN201610312156.2A patent/CN105822462A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11200953A (en) * | 1998-01-19 | 1999-07-27 | Nissan Motor Co Ltd | Injector of cng engine |
| CN2356152Y (en) * | 1999-02-08 | 1999-12-29 | 西安交通大学 | Gas fuel manifold mixer for double fuel engine |
| CN201215046Y (en) * | 2008-07-09 | 2009-04-01 | 重庆红旗缸盖制造有限公司 | Natural gas multi-point spraying apparatus for inlet manifold subassembly of automobile engine |
| CN203532100U (en) * | 2013-09-24 | 2014-04-09 | 吉林大学 | Device enabling fuel gas spraying direction and number of spray holes to be variable |
| WO2015075935A1 (en) * | 2013-11-21 | 2015-05-28 | 株式会社デンソー | Fuel injection device |
| CN204591546U (en) * | 2015-05-05 | 2015-08-26 | 吉林大学 | Duel fuel engine intake duct 45 degree of four hole jet pipe |
| CN204827715U (en) * | 2015-05-25 | 2015-12-02 | 哈尔滨工程大学 | Gaseous fuel or dual -fuel engine multiple aperture STREAMING gas burner |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404121A (en) * | 2018-11-30 | 2019-03-01 | 中国船舶重工集团公司第七研究所 | Tonifying Qi Effuser device and diesel engine with it |
| CN109404121B (en) * | 2018-11-30 | 2019-11-19 | 中国船舶重工集团公司第七一一研究所 | Tonifying Qi Effuser device and diesel engine with it |
| CN110318911A (en) * | 2019-06-26 | 2019-10-11 | 哈尔滨工程大学 | A kind of natural gas engine gas injection apparatus with fountain nozzle arrangements |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104018956B (en) | A kind of Multi-point jetting type gas/dual fuel engine combustion gas and air premixing appts | |
| CN105422327B (en) | The variable EGR gas handling systems of composite injection bi-fuel internal combustion engine and method | |
| CN107806636A (en) | Diesel engine vent gas simulation generator | |
| CN107956619B (en) | Single-hole atomizing oil sprayer and rotational flow atomizing structure thereof | |
| CN105179111A (en) | Gas/dual-fuel engine intake manifold gas injection device | |
| CN105822462A (en) | Inlet spray pipe of natural gas engine | |
| CN103470404B (en) | Fuel gas injection position and nozzle number variset | |
| CN105179113B (en) | The porous radial-flow type gas nozzle of gaseous fuel/dual fuel engine | |
| CN101813039A (en) | turbulence mixer | |
| CN205001085U (en) | Gaseous dual -fuel engine air intake manifold gas jet device | |
| CN203978647U (en) | A kind of fuel gas injection mixing arrangement that is applied to multi-point injection gas engine | |
| CN104832319B (en) | A kind of gas/dual fuel engine combustion gas echelon injection apparatus | |
| CN205480995U (en) | Wind of lurex low -nitrogen combustion device fires full premix ware | |
| CN102235283A (en) | Fuel nozzle | |
| CN202328254U (en) | Burner for gas caloric value meter | |
| CN111005824A (en) | Intensified flow-guiding type large-flow injection device of gas fuel engine | |
| CN203532101U (en) | Device with variable fuel gas injection position and number of nozzles | |
| CN205578138U (en) | Natural gas engine intake duct spray tube | |
| CN114635814A (en) | Scaling spray pipe acceleration mixer for enhancing oil-gas mixing of high-intensity diesel engine | |
| CN204591546U (en) | Duel fuel engine intake duct 45 degree of four hole jet pipe | |
| CN204827715U (en) | Gaseous fuel or dual -fuel engine multiple aperture STREAMING gas burner | |
| CN203532100U (en) | Device enabling fuel gas spraying direction and number of spray holes to be variable | |
| CN202153194U (en) | Mixer for sample gases | |
| CN201568162U (en) | Flow-disturbing mixer | |
| CN204729189U (en) | A kind of gas/duel fuel engine combustion gas echelon injection apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160803 |