CN105781801A - Air jet flow control method of double-fuel engine - Google Patents
Air jet flow control method of double-fuel engine Download PDFInfo
- Publication number
- CN105781801A CN105781801A CN201610185137.8A CN201610185137A CN105781801A CN 105781801 A CN105781801 A CN 105781801A CN 201610185137 A CN201610185137 A CN 201610185137A CN 105781801 A CN105781801 A CN 105781801A
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- CN
- China
- Prior art keywords
- valve
- moving valve
- nozzle
- connector
- valve nozzle
- 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
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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
-
- 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
- F02M21/0251—Details of actuators therefor
- F02M21/0254—Electric actuators, e.g. solenoid or piezoelectric
-
- 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
- F02M21/0257—Details of the valve closing elements, e.g. valve seats, stems or arrangement of flow passages
- F02M21/026—Lift valves, i.e. stem operated valves
-
- 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
Abstract
The invention discloses an air jet flow control method of a double-fuel engine. The method comprises an electromagnetic valve base; a moving valve body and a shell are arranged in the electromagnetic valve base in sequence from inside to outside; the upper end of the shell extends outwards; a connecting piece with a hollow internal is arranged at the lower end of the shell; a gap is formed between the upper end of the connecting piece and the lower end of the moving valve body; an extending end of the shell is in threaded connection with a valve nozzle; an air way communicating with the middle part of the connecting piece is formed in the moving valve body; a spring is arranged in the air way; two through holes communicating with the air way are formed in the side wall of the moving valve body; the upper end of the moving valve body communicates with the internal of the valve nozzle; and multiple air jet holes are formed in the periphery of the top end of the valve nozzle. The multiple air jet holes are formed in the outer periphery of the top of the valve nozzle for adapting to stable gas output in increment or decrement of gas quantity in the air way; and the valve nozzle is in threaded connection with the extending end of the shell, so that the valve nozzle can be quickly replaced when being damaged to prevent whole replacement of such parts as a valve element and the electromagnetic valve base, and the use cost is reduced.
Description
Technical field
The present invention relates to gas injection rail, specifically refer to the spray air flow control method of a kind of double fuel engine.
Background technology
Along with the rapid growth of automobile pollution, environmental pollution and petroleum resources shortage problem are on the rise.For this, the R&D work of new-energy automobile is actively developed in countries in the world.Wherein, gas-fueled vehicles are low with its discharge, suppress greenhouse effect and break away from oil is relied on three big characteristics, are just worldwide popularized and promote.In China, many city bus and taxi have great amount of fuel oil car to use instead or are using compressed natural gas (CNG) or liquefied petroleum gas (LPG) instead.Along with increasing rapidly of China's gas combustion automobile recoverable amount, develop matched combustion heater also imperative.
In the electronic controlled gas injection system of gaseous propellant engine, one of device of most critical is gas ejector, and its performance quality directly affects the jet quality of fuel.But, the structure spraying rail spool in prior art is complicated, and the stability of nozzle flow is not enough, in adjustment process, the adjustment of gas flow is comparatively delayed, and the gas flow change such as ejected by nozzle when strengthening or reduce flow output is slower.
Summary of the invention
It is an object of the invention to provide the spray air flow control method of a kind of double fuel engine, increase the rate of change of fuel gas supply amount in spray rail and then the purpose of gas flow flexible modulation.
The purpose of the present invention is achieved through the following technical solutions:
nullA kind of spray air flow control method of double fuel engine，Including the solenoid valve seat being provided with solenoid on inwall，Moving valve it is disposed with from inside to outside in described solenoid valve seat、Housing，Described housing upper end stretches out，And the connector of inner hollow it is provided with in described housing lower end，Gap is left between connector upper end and moving valve lower end，Elongated end at housing is threaded valve nozzle，Have inside described moving valve and the air flue connected in the middle part of connector，Spring is arranged in air flue，And on described moving valve sidewall, have two through holes connected with air flue，Moving valve upper end is internal with valve nozzle to be connected，And on the circumference on valve nozzle top, have the straight tube that multiple fumarole also includes the dead in line of axis and valve nozzle，Described straight tube is made up of body and connecting tube，Described body lower end is connected with the open end at moving valve top，And connecting tube upper end runs through the top of valve nozzle，Connecting tube lower end is run through the end face of body and downwardly extends，It is provided with outwardly in connecting tube bottom outer rim and between inboard wall of tube body, forms annular seal space，And in annular seal space, it is marked with the fluid of 1/2 volume；During adjusting gas flow output, by the changes of magnetic field of solenoid, moving valve in the vertical direction is made to do rectilinear motion, to regulate the contact area size of through hole and inner walls.
In prior art, the supply of combustion gas is directly transmitted often through fuel gas pipeline, does not reach the requirement of precise fine-adjustment in the adjustment of air demand so that gas supply cannot practical requirement；When the present invention works, for supply normal discharge, moving valve contacts with each other with the corresponding end face of connector, and through hole is blocked by inner walls completely, combustion gas enters in air flue by inside connector, flows in straight tube by the open end at air flue top, eventually passes straight tube upper end and flows out；And when needs increase gas supply amount, by solenoid, the magnetic field around moving valve is changed in solenoid valve seat, make to depart between moving valve and connector, namely moving valve moves up, now, the through hole connected with air flue is internal with valve nozzle gradually to be connected, namely can be passed through in the open end entrance valve nozzle at through hole and moving valve top by the combustion gas of the internal output of connector, the combustion gas input quantity that only need to increase connector place then can increase the combustion gas output that valve nozzle is final, compared with prior art, under the same premise increasing combustion gas input quantity, the output of single gas distribution channel is well below the output of double, two gas distribution channels, and then realize the rate of change of fuel gas supply amount in spray rail, reach the purpose of gas flow flexible modulation.And, the excircle at valve nozzle top arranges multiple fumarole, the combustion gas being suitable in air flue gas quantity when increasing or reduce stably exports, wherein valve nozzle is threadeded with the elongated end of housing, when valve nozzle is impaired, it can be carried out quick-replaceable, and then avoid the integral replacing to the parts such as spool and solenoid valve seat, reduce use cost.
Further, the axis of straight tube and the dead in line of valve nozzle, improve outside combustion gas while the stability of spray, it is ensured that the flow ejection efficiency at valve nozzle place；And straight tube is made up of body and connecting tube, during supply, connecting tube is fixed, and body, when servo-actuated valve body moves together, utilizes the fluid in annular seal space to be fully sealed the coupling part between body and connecting tube, to reach the purpose preventing gas from leakage occurring.
In described gap, cushion pad is installed.For reducing the impact between moving valve and connector end, at gap location, cushion pad is installed, ensure that on the one hand and the vertical direction that moving valve remains stable for moves back and forth, can also will reduce the abrasion of moving valve end face on the other hand, extend the service life of moving valve.
In the junction of described valve nozzle outer wall Yu housing elongated end inwall, O is installed.Due to valve nozzle with housing elongated end for threadeding, for strengthening the connection sealing between valve nozzle and housing further, O is set and can not only realize strengthening the purpose of sealing property, combustion gas can also be cushioned when ejection to the impact dynamics between housing and valve nozzle junction, the stability overall to ensure device.
The present invention compared with prior art, has such advantages as and beneficial effect:
1, the present invention arranges multiple fumarole on the excircle at valve nozzle top, the combustion gas being suitable in air flue gas quantity when increasing or reduce stably exports, wherein valve nozzle is threadeded with the elongated end of housing, when valve nozzle is impaired, it can be carried out quick-replaceable, and then avoid the integral replacing to the parts such as spool and solenoid valve seat, reduce use cost；
2, the present invention reduces the impact between moving valve and connector end, at gap location, cushion pad is installed, ensure that on the one hand and the vertical direction that moving valve remains stable for moves back and forth, can also will reduce the abrasion of moving valve end face on the other hand, extend the service life of moving valve；
3, the present invention arranges O and can not only realize strengthening the purpose of sealing property, moreover it is possible to cushion combustion gas when ejection to the impact dynamics between housing and valve nozzle junction, the stability overall to ensure device.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by the embodiment of the present invention, constitutes the part of the application, is not intended that the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is present configuration schematic diagram；
Fig. 2 is the enlarged drawing at A place in Fig. 1；
Labelling and corresponding parts title in accompanying drawing:
1-through hole, 2-fumarole, 3-straight tube, 31-fluid, 32-annular seal space, 33-connecting tube, 4-spring, 5-moving valve, 6-housing, 7-air flue, 8-connector, 9-solenoid valve seat, 10-cushion pad, 11-O type circle, 12-valve nozzle.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, and exemplary embodiment and the explanation thereof of the present invention are only used for explaining the present invention, not as a limitation of the invention.
Embodiment 1
nullAs depicted in figs. 1 and 2，The present embodiment includes the solenoid valve seat 9 being provided with solenoid on inwall，Moving valve 5 it is disposed with from inside to outside in described solenoid valve seat 9、Housing 6，Described housing 6 upper end stretches out，And the connector 8 of inner hollow it is provided with in described housing 6 lower end，Gap is left between connector 8 upper end and moving valve 5 lower end，Elongated end at housing 6 is threaded valve nozzle 12，Described moving valve 5 is internal to be had and the air flue 7 connected in the middle part of connector 8，Spring 4 is arranged in air flue 7，And on described moving valve 5 sidewall, have two through holes 1 connected with air flue 7，Moving valve 5 upper end is internal with valve nozzle 12 to be connected，And on the circumference on valve nozzle 12 top, have multiple fumarole 2，Also include the straight tube 3 of axis and the dead in line of valve nozzle 12，Described straight tube 3 is made up of body and connecting tube 33，Described body lower end is connected with the open end at moving valve 5 top，And connecting tube 33 upper end runs through the top of valve nozzle 12，Connecting tube 33 lower end is run through the end face of body and downwardly extends，It is provided with outwardly in connecting tube 33 bottom outer rim and between inboard wall of tube body, forms annular seal space 32，And in annular seal space 32, it is marked with the fluid 31 of 1/2 volume；During adjusting gas flow output, by the changes of magnetic field of solenoid, moving valve 5 in the vertical direction is made to do rectilinear motion, to regulate the contact area size of through hole 1 and housing 6 inwall.
During work, for supply normal discharge, moving valve 5 contacts with each other with the corresponding end face of connector 8, and through hole 1 is blocked by housing 6 inwall completely, combustion gas enters in air flue 7 by connector 8 is internal, flowed in straight tube 12 by the open end at air flue 7 top, eventually pass straight tube 12 end and flow out；And when needs increase gas supply amount, by solenoid, the magnetic field around moving valve 5 is changed in solenoid valve seat 9, make to depart between moving valve 5 and connector 8, namely moving valve 5 moves up, now, the through hole 1 connected with air flue 7 is internal with valve nozzle 12 gradually to be connected, namely can be passed through in the open end entrance valve nozzle 12 at through hole 1 and moving valve 5 top by the combustion gas of the internal output of connector 8, the combustion gas input quantity that only need to increase connector 8 place then can increase the combustion gas output that valve nozzle 12 is final, compared with prior art, under the same premise increasing combustion gas input quantity, the output of single gas distribution channel is well below the output of double, two gas distribution channels, and then realize the rate of change of fuel gas supply amount in spray rail, reach the purpose of gas flow flexible modulation.And, the excircle at valve nozzle 12 top arranges multiple fumarole 2, the combustion gas being suitable in air flue 7 gas quantity when increasing or reduce stably exports, wherein valve nozzle 12 is threadeded with the elongated end of housing 6, when valve nozzle 12 is impaired, it can be carried out quick-replaceable, and then avoid the integral replacing to parts such as spool and solenoid valve seats 9, reduce use cost.Further, the dead in line of the axis of straight tube 3 and valve nozzle 12, while improving the stability sprayed outside combustion gas, it is ensured that the flow ejection efficiency at valve nozzle 12 place；And straight tube 3 is made up of body and connecting tube 33, during supply, connecting tube 33 is fixed, body, when servo-actuated valve body 5 moves together, utilizes the fluid 31 in annular seal space 32 to be fully sealed the coupling part between body and connecting tube 33, to reach the purpose preventing combustion gas from leakage occurring.
Wherein, the present embodiment is reduce the impact between moving valve 5 and connector 8 end, installs cushion pad 10 at gap location, ensure that on the one hand and moves back and forth on the vertical direction that moving valve 5 remains stable for, can also will reduce the abrasion of moving valve 5 end face on the other hand, extend the service life of moving valve 5.Due to valve nozzle 12 with housing 6 elongated end for threadeding, for strengthening the connection sealing between valve nozzle 12 and housing 6 further, O 11 is set and can not only realize strengthening the purpose of sealing property, combustion gas can also be cushioned when ejection to the impact dynamics between housing 6 and valve nozzle 12 junction, the stability overall to ensure device.
Above-described detailed description of the invention; the purpose of the present invention, technical scheme and beneficial effect have been further described; it is it should be understood that; the foregoing is only the specific embodiment of the present invention; the protection domain being not intended to limit the present invention; all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (3)
- null1. the spray air flow control method of a double fuel engine，Including the solenoid valve seat (9) being provided with solenoid on inwall，It is characterized in that: in described solenoid valve seat (9), be disposed with moving valve (5) from inside to outside、Housing (6)，Described housing (6) upper end stretches out，And the connector (8) of inner hollow it is provided with in described housing (6) lower end，Gap is left between connector (8) upper end and moving valve (5) lower end，Elongated end at housing (6) is threaded valve nozzle (12)，Described moving valve (5) is internal has the air flue (7) connected with connector (8) middle part，Spring (4) is arranged in air flue，And on described moving valve (5) sidewall, have two through holes (1) connected with air flue (7)，Moving valve (5) upper end is internal with valve nozzle (12) to be connected，And on the circumference on valve nozzle (12) top, have multiple fumarole (2)，Also include the straight tube (3) of axis and the dead in line of valve nozzle (12)，Described straight tube (3) is made up of body and connecting tube (33)，Described body lower end is connected with the open end at moving valve (5) top，And connecting tube (33) upper end runs through the top of valve nozzle (12)，Connecting tube (33) lower end is run through the end face of body and downwardly extends，It is provided with outwardly in connecting tube (33) bottom outer rim and between inboard wall of tube body, forms annular seal space (32)，And in annular seal space (32), it is marked with the fluid (31) of 1/2 volume；During adjusting gas flow output, by the changes of magnetic field of solenoid, moving valve (5) in the vertical direction is made to do rectilinear motion, to regulate the contact area size of through hole (1) and housing (6) inwall；For supply normal discharge, moving valve contacts with each other with the corresponding end face of connector, and through hole is blocked by inner walls completely, and combustion gas enters in air flue by inside connector, flow in straight tube by the open end at air flue top, eventually pass straight tube upper end and flow out；And when needs increase gas supply amount, by solenoid, the magnetic field around moving valve is changed in solenoid valve seat, make to depart between moving valve and connector, namely moving valve moves up, now, the through hole connected with air flue is internal with valve nozzle gradually to be connected, and namely can be passed through by the combustion gas of the internal output of connector in the open end entrance valve nozzle at through hole and moving valve top, and the combustion gas input quantity that only need to increase connector place then can increase the combustion gas output that valve nozzle is final.
- 2. the spray air flow control method of a kind of double fuel engine according to claim 1, it is characterised in that: cushion pad (10) is installed in described gap.
- 3. the spray air flow control method of a kind of double fuel engine according to claim 1, it is characterised in that: in the junction of described valve nozzle (12) outer wall Yu housing (6) elongated end inwall, O (11) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610185137.8A CN105781801A (en) | 2016-03-29 | 2016-03-29 | Air jet flow control method of double-fuel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610185137.8A CN105781801A (en) | 2016-03-29 | 2016-03-29 | Air jet flow control method of double-fuel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105781801A true CN105781801A (en) | 2016-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610185137.8A Pending CN105781801A (en) | 2016-03-29 | 2016-03-29 | Air jet flow control method of double-fuel engine |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5150690A (en) * | 1989-09-29 | 1992-09-29 | Ortech Corporation | Flow control system |
| US5398657A (en) * | 1993-03-01 | 1995-03-21 | General Motors Corporation | Fuel injection |
| US5884611A (en) * | 1997-10-14 | 1999-03-23 | Cummins Engine Company, Inc. | Effervescent injector for diesel engines |
| CN2332820Y (en) * | 1998-08-11 | 1999-08-11 | 青岛仪表厂 | LPG evaporating device for motorcycle |
| DE10133190A1 (en) * | 2001-07-07 | 2003-01-16 | Deutz Ag | Pre-chamber mixture enrichment process for IC engines with mixture at least temporarily enriched by enrichment fuel fed into ignition chamber |
| CN103321782A (en) * | 2013-07-11 | 2013-09-25 | 烟台杰瑞石油服务集团股份有限公司 | Dual-fuel modified system |
| KR20130140383A (en) * | 2012-06-14 | 2013-12-24 | 현대자동차주식회사 | Fuel supply apparatus for dimethylether common rail and method thereof |
| CN105604740A (en) * | 2016-01-29 | 2016-05-25 | 成都杜嘉机电有限公司 | CNG (Compressed Natural Gas) injection system for automobile |
-
2016
- 2016-03-29 CN CN201610185137.8A patent/CN105781801A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5150690A (en) * | 1989-09-29 | 1992-09-29 | Ortech Corporation | Flow control system |
| US5398657A (en) * | 1993-03-01 | 1995-03-21 | General Motors Corporation | Fuel injection |
| US5884611A (en) * | 1997-10-14 | 1999-03-23 | Cummins Engine Company, Inc. | Effervescent injector for diesel engines |
| CN2332820Y (en) * | 1998-08-11 | 1999-08-11 | 青岛仪表厂 | LPG evaporating device for motorcycle |
| DE10133190A1 (en) * | 2001-07-07 | 2003-01-16 | Deutz Ag | Pre-chamber mixture enrichment process for IC engines with mixture at least temporarily enriched by enrichment fuel fed into ignition chamber |
| KR20130140383A (en) * | 2012-06-14 | 2013-12-24 | 현대자동차주식회사 | Fuel supply apparatus for dimethylether common rail and method thereof |
| CN103321782A (en) * | 2013-07-11 | 2013-09-25 | 烟台杰瑞石油服务集团股份有限公司 | Dual-fuel modified system |
| CN105604740A (en) * | 2016-01-29 | 2016-05-25 | 成都杜嘉机电有限公司 | CNG (Compressed Natural Gas) injection system for automobile |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160720 |
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| RJ01 | Rejection of invention patent application after publication |