CN105156234A - Combination gas blending device for gaseous propellant engine - Google Patents
Combination gas blending device for gaseous propellant engine Download PDFInfo
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- CN105156234A CN105156234A CN201510689537.8A CN201510689537A CN105156234A CN 105156234 A CN105156234 A CN 105156234A CN 201510689537 A CN201510689537 A CN 201510689537A CN 105156234 A CN105156234 A CN 105156234A
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- valve body
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- sparger
- armature
- gaseous propellant
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- 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
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Abstract
The invention discloses a combination gas blending device for a gaseous propellant engine and relates to stepless fuel gas ejectors and mixing devices for gaseous propellant engines. By the adoption of the combination gas blending device for the gaseous propellant engine, engine and ejector performance matching is achieved, and the problem that fuel gas and air can not be evenly mixed is solved. The stepless fuel gas ejector is composed of a fuel gas inlet, an upper ejector valve, a lower ejector valve, an upper ejector shell and a lower ejector shell, wherein an electromagnetic valve capable of achieving proportional control according to loads is arranged in each ejector valve. The fuel gas mixing device is composed of a gas pressurizer shell, a fuel gas diversion and injection pipe and a swirler and can be used for secondary dispersion and mixing of fuel gas, and the swirler is provided with a blade structure. By arranging the electromagnetic valves capable of achieving proportional control according to loads in the ejector valves, small-flow precision control of fuel gas during starting and low-load operation can be achieved, and high-flow fuel gas requirement during high-load operation can be met. Through the arrangement of the diversion and injection pipe and the swirler, mixing of fuel gas and air can be promoted.
Description
Technical field
The present invention relates to a kind of mixed gas allotment of gaseous propellant engine, mixing arrangement, particularly a kind of stepless gas injector for gaseous propellant engine and mixing arrangement.
Background technique
Development internal-combustion engine alternative fuel realizes one of very effective means of its energy-saving and emission-reduction, has great role to the oil crisis and environmental situation solving more and more sternness.Gaseous fuel (as rock gas, petroleum gas), has the advantages such as combustion cleaning, calorific value be large, especially its rich reserves of natural gas, because and become the first-selection of following internal-combustion engine alternative fuel.But internal-combustion engine is of a great variety at present, model power difference is very far away, on dissimilar internal-combustion engine basis exploitation or when transforming gaseous propellant engine as, the requirement of the gaseous-fuel injector be equipped with also just differs greatly, corresponding gaseous-fuel injector can not be configured separately according to the demand of different motor, and the parameter of sparger and mounting point can make a big impact to the usability of motor, when the fuel injection amount range that sparger is too small cannot meet the powerful Power operation requirement of motor, particularly adopt the promptness that cannot meet fuel gas injection during manifold multi-point injection, when the fuel injection amount range that sparger is excessive, to make to open spray fuel quantity excessive, particularly boat diesel engine, supporting is all large discharge sparger, and motor is when underrun, make fuel injection amount inaccuracy, cause the waste of fuel and power character, Economy and emission performance to decline, at present, the transformation unit of motor producer or motor is in order to meet the requirement of high-power marine gas engine gas supply amount, mostly be for every cylinder, multiple small flow sparger be installed and control each low-flow electromagnetic valve separately, but the quantity of sparger is by manifold structure size restrictions, and the jet speed of response of variable working condition can be caused to decline away from suction tude installation, and multiple small flow sparger also can make the unreliability of control difficulty and system increase to each cylinder supply combustion gas, also can produce electromagnetic interference, cause system works unstable.Meanwhile, can there is the problem of combustion gas and air undercompounding, combustion efficiency is declined when intake manifold is installed, emission performance is deteriorated.
Summary of the invention
The object of this invention is to provide a kind of gaseous propellant engine mixed gas rectifying means, in order to solve in the internal-combustion engine enterprising promoting the circulation of qi fluid fuel engine research, development in basis and transformation process of different capacity scope, injector performance matching problem and combustion gas and air can not mixed uniformly problems.
The object of the present invention is achieved like this: it comprises stepless gas injector and gas mixing unit; Described stepless gas injector comprises valve body 7, spheroid 24, steel ball and spring 25, electromagnetic valve body 27, armature 31, valve core spring 29 and electromagnetic coil 30 under combustion gas inlet pipe 1, sparger upper valve body 20, sparger, seal between the outer cylinder surface of combustion gas inlet pipe 1 and sparger upper valve body 20 in the cavity that combustion gas inlet pipe 1 inserts sparger upper valve body 20 upper end, steel ball and spring 25 pushes up lower end tapping to combustion gas inlet pipe 1 to form one-way valve structures from lower end spheroid 24;
The upper end of valve core spring 29 withstands on the lower end of electromagnetic valve body 27, the lower end of valve core spring 29 withstands on the upper end of armature 31, armature 31 is arranged in the center slideway under sparger in valve body 7 inner chamber, the shaft axis place of armature 31 has blast tube 15, blast tube 15 through electromagnetic valve body 27 through with the inner chamber of upper valve body 20 always, electromagnetic coil 30 is looped around outside electromagnetic valve body 27, and electromagnetic coil 30 is connected on proportional control circuit;
Gas mixing unit comprises gas pressurizer shell 13, gas diversion injection pipe 10, cyclone separator 40 and intake duct 50, the lower end outer round surface shrouding gas voltage stabilizer shell 13 of valve body 7 under sparger, under sparger, the outer round surface of valve body 7 and the bore area of gas pressurizer shell 13 form closed cavity, at least two radial grooves 33 are had between the outer round surface of valve body 7 lower end and bore area under sparger, described multiple radial groove 33 is uniformly distributed along the outer round surface of valve body under sparger 7, and the cross section of described radial groove 33 is rectangle;
The lower end surface center of gas pressurizer shell 13 is connected with one end of gas diversion injection pipe 10, the other end of gas diversion injection pipe 10 bends 90 degree and is inserted into air flue 50, the other end end face of gas diversion injection pipe 10 is closed and adjacent with the air inlet 50-1 of intake duct 50, the other end outer round surface of gas diversion injection pipe 10 is processed with multiple radial spray orifice 11, described multiple radial spray orifice 11 is uniformly distributed along gas diversion injection pipe 10 outer round surface, air inlet 50-1 is provided with cyclone separator 40.
1, the present invention arranges the solenoid valve that can realize gas flow proportional control according to control signal in valve body, the small-flow precise not only can taking into account combustion gas when startup and Smaller load controls, can meet again the large discharge requirement of combustion gas during high load, and water conservancy diversion injection pipe and cyclone separator can promote the mixing of combustion gas and air.This invention has compact structure, controls flexibly, and combustion gas and the feature such as air mixes, be conducive to Economy and the emission performance of improving motor.
2, the shape of cross section of radial groove 33 is rectangles, and this height that armature is lifted and jet amount direct proportionality, can simplify control algorithm.
2, gas diversion injection pipe 10 lower center axis overlaps with intake duct 50 center line, and the combustion gas direction that radial spray orifice is sprayed is vertical with air draught direction, is conducive to mixing.
3, the blade structure of cyclone separator can increase the shock of gas, formed turbulent flow, make air and combustion gas mixing more even.Meanwhile, fixed blade also can increase its working life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.Fig. 2 is A place structure for amplifying schematic diagram in Fig. 1.Fig. 3 is D place structure for amplifying schematic diagram in Fig. 1.Fig. 4 is C place structure for amplifying schematic diagram in Fig. 1.Fig. 5 is E place structure for amplifying schematic diagram in Fig. 1.Fig. 6 is F place structure for amplifying schematic diagram in Fig. 1.Fig. 7 is B place structure for amplifying schematic diagram in Fig. 1.Fig. 8 is hydrocyclone structure schematic diagram of the present invention.Fig. 9 is the A-A sectional view of Fig. 8.
Embodiment
Embodiment one: illustrate present embodiment below in conjunction with Fig. 1 to Fig. 9.Present embodiment comprises stepless gas injector and gas mixing unit; Described stepless gas injector comprises valve body 7, sparger upper shell 19 and sparger lower shell body 16 under combustion gas inlet pipe 1, sparger upper valve body 20, sparger, spheroid 24, steel ball and spring 25, electromagnetic valve body 27, armature 31, valve core spring 29 and electromagnetic coil 30, seal between the outer cylinder surface of combustion gas inlet pipe 1 and sparger upper valve body 20 in the cavity that combustion gas inlet pipe 1 inserts sparger upper valve body 20 upper end, steel ball and spring 25 pushes up lower end tapping to combustion gas inlet pipe 1 to form one-way valve structures from lower end spheroid 24; Spheroid 24, steel ball and spring 25, sparger upper valve body 20 constitute the one-way valve part of gas injector jointly, ensure that combustion gas can not reverse flow.
The upper end of valve core spring 29 withstands on the lower end of electromagnetic valve body 27, the lower end of valve core spring 29 withstands on the upper end of armature 31, armature 31 is arranged in the center slideway under sparger in valve body 7 inner chamber, the shaft axis place of armature 31 has blast tube 15, blast tube 15 through electromagnetic valve body 27 through with the inner chamber of upper valve body 20 always, electromagnetic coil 30 is looped around outside electromagnetic valve body 27, electromagnetic coil 30 is connected on proportional control circuit, the electric current that electromagnetic coil 30 flows through is controlled in proportion, thus control the axial position of armature 31 under sparger in valve body 7,
Gas mixing unit comprises gas pressurizer shell 13, gas diversion injection pipe 10, cyclone separator 40 and intake duct 50, the lower end outer round surface shrouding gas voltage stabilizer shell 13 of valve body 7 under sparger, under sparger, the outer round surface of valve body 7 and the bore area of gas pressurizer shell 13 form closed cavity, at least two radial grooves 33 are had between the outer round surface of valve body 7 lower end and bore area under sparger, described multiple radial groove 33 is uniformly distributed along the outer round surface of valve body under sparger 7, and the cross section of described radial groove 33 is rectangle;
The lower end surface center of gas pressurizer shell 13 is connected with one end of gas diversion injection pipe 10, the other end of gas diversion injection pipe 10 bends 90 degree and is inserted into air flue 50, the other end end face of gas diversion injection pipe 10 is closed and adjacent with the air inlet 50-1 of intake duct 50, the other end outer round surface of gas diversion injection pipe 10 is processed with multiple radial spray orifice 11, described multiple radial spray orifice 11 is uniformly distributed along gas diversion injection pipe 10 outer round surface, air inlet 50-1 is provided with cyclone separator 40.
Stepless gas injector described in the present invention, sparger upper valve body 20 is provided with wiring slot 21, proportion of installation solenoid valve in valve body 7 chamber under sparger, proportional electromagnetic valve mainly comprises electromagnetic valve body 27, spring seat 28, valve core spring 29, electromagnetic coil 30, armature 31 etc.The electromagnetic valve body 27 of stepless gas injector and armature 31 center processing blast tube 15, blast tube 15 leads to gas storage chamber 34, when solenoid valve 17 is energized, armature 31 is promoted, combustion gas flows to nozzle 33 from gas storage chamber 34, after electromagnetic coil 30 power-off, armature 31 is taken a seat under valve core spring 29 acts on, and armature 31 place of taking a seat is sealed by sealing material.
Under different operating modes, engine electric-controlled unit, by the various sensor signals collected, sends signal to proportional control circuit, drives solenoid valve, by controlling the lifting and taking a seat of control system of switching on or off electricity armature 31 of electromagnetic coil 30, and then the injection controlling combustion gas whether.When electromagnetic coil 30 no electric circuit, armature 31 is pressed on valve seat by valve core spring 29, and armature 31 is not opened, and combustion gas is not sprayed; When electromagnetic coil 30 is energized, electromagnetic valve body 27 pairs of armature 31 have electromagnetic force, and when its electromagnetic force is greater than the pretightening force of valve core spring 29, armature 31 is opened, and the combustion gas be stored in gas storage chamber 34 starts to spray.ECU can according to the different size adjusting control voltage signal at any time of load, the electrical current of electromagnetic coil 30 is changed according to the difference of load, can the suction of control ratio electromagnet adjust according to load like this, thus the height that armature 31 lifts can be controlled, realize the combustion gas of different amount and accurately spray into cylinder in time.
Embodiment two: illustrate present embodiment below in conjunction with Fig. 1 to Fig. 9.Present embodiment specifically defines described cyclone separator 40 and comprises flange body 38 and blast fan 37 compared with mode of execution one, blast fan 37 is fixedly embedded in the center drilling place of flange body 38, described blast fan 37 and gas diversion injection pipe 10 and intake duct 50 coaxial inner conductor.
Gas mixing unit is made up of gas pressurizer shell 13, gas diversion injection pipe 10 and cyclone separator 40, the secondary disperse that can realize combustion gas with mix.
The metastable gas pressure chamber arranged below stepless gas injector, the combustion gas that sparger can be ejected is collected, and plays the effect of voltage stabilizing, and gas pressurizer shell 13 is connected with valve body under sparger 7 by screw thread, and is sealed by sealing gasket 14.
Gas mixing unit has secondary disperse and mixed construction, and one-level disperse is realized by gas diversion injection pipe 10 with mixing, and secondary disperse is realized by cyclone separator.Gas diversion injection pipe 10 is connected with plenum shell 13, gas diversion injection pipe 10 sidewall is processed with radial spray orifice 11, the gross area of spray orifice 11 can meet the requirement of sparger peak rate of flow, and during installation, water conservancy diversion injection pipe 10 central axis overlaps with suction tude or air inlet passage center line.
Cyclone separator 40 is arranged between intake manifold and cylinder cap by flange body 38.
Blade structure can increase the shock of gas, forms turbulent flow, makes mixing more even.Meanwhile, fixed blade can increase working life.
Embodiment three: illustrate present embodiment below in conjunction with Fig. 1 to Fig. 9.Present embodiment specifically defines in sparger upper valve body 20 and lower valve body 7 compared with mode of execution one a mutually corresponding chamber, sparger upper valve body 20 and lower valve body 7 adopt seam locate and utilize sealing gasket 18 to seal, positioning hole 4 is positioned at lower valve body, and upper valve body 20 and lower valve body 7 are assembled compression by Flange joint by sparger upper shell 19 and lower shell body 16.
Embodiment four: illustrate present embodiment below in conjunction with Fig. 1 to Fig. 9.Present embodiment specifically defines the fuel gas inlet part that blast tube 15 and seal ring 23 constitute gas injector compared with mode of execution one.
Embodiment five: illustrate present embodiment below in conjunction with Fig. 1 to Fig. 9.Present embodiment specifically defines ECU compared with mode of execution one, potentiometer 35, amplifier 36 constitute proportional control circuit.
Embodiment six: illustrate present embodiment below in conjunction with Fig. 1 to Fig. 9.Present embodiment specifically defines sparger upper shell 19 compared with mode of execution one and upper valve body 20 and lower valve body 7 are assembled compression by bolt 2 and bolt 5 by lower shell body 16, and joint scribbles sealer.Sealing gasket 9 ensure that sealing when installing stepless gas injector, and sealing gasket 18 ensure that the inside of sparger can not be revealed.In the middle part of armature 31, external diameter is less than armature 31 two ends external diameter, can alleviate armature quality like this, reduces electromagnet suction, thus can reduce the heat of electric current generation.
Embodiment seven: illustrate present embodiment below in conjunction with Fig. 1 to Fig. 9.Present embodiment specifically defines when electromagnetic coil 30 no electric circuit compared with mode of execution one, and valve core spring 29 is compacted to armature 31 on valve seat, to guarantee its sealing.Armature 31 take injector body as valve seat, can ensure compact structure between coupling part of the present invention so on the one hand, is conducive to the sealing to combustion gas on the other hand, because of armature take a seat area comparatively large and its on have sealing material.Armature 31 and the surface contacted with armature 31 all have nitriding layer and all scribble polytetrafluoroethylene floor, and its surface hardness is increased, and when armature moves up and down, because polytetrafluoroethylene floor dry friction coefficient is low, can reduce friction, increase working life.
Claims (10)
1. a gaseous propellant engine mixed gas rectifying means, is characterized in that it comprises stepless gas injector and gas mixing unit, described stepless gas injector comprises combustion gas inlet pipe (1), sparger upper valve body (20), valve body (7) under sparger, spheroid (24), steel ball and spring (25), electromagnetic valve body (27), armature (31), valve core spring (29) and electromagnetic coil (30), combustion gas inlet pipe (1) insert sparger upper valve body (20) upper end cavity in and seal between the outer cylinder surface of combustion gas inlet pipe (1) and sparger upper valve body (20), steel ball and spring (25) from lower end spheroid (24) top to the lower end tapping of combustion gas inlet pipe (1) to form one-way valve structures,
The upper end of valve core spring (29) withstands on the lower end of electromagnetic valve body (27), the lower end of valve core spring (29) withstands on the upper end of armature (31), armature (31) is arranged in the center slideway under sparger in valve body (7) inner chamber, the shaft axis place of armature (31) has blast tube (15), blast tube (15) through electromagnetic valve body (27) through with the inner chamber of upper valve body (20) always, electromagnetic coil (30) is looped around electromagnetic valve body (27) outward, electromagnetic coil (30) is connected on proportional control circuit,
Gas mixing unit comprises gas pressurizer shell (13), gas diversion injection pipe (10), cyclone separator (40) and intake duct (50), lower end outer round surface shrouding gas voltage stabilizer shell (13) of valve body (7) under sparger, under sparger, the outer round surface of valve body (7) and the bore area of gas pressurizer shell (13) form closed cavity, at least two radial grooves (33) are had between the outer round surface of valve body (7) lower end and bore area under sparger, described multiple radial groove (33) is uniformly distributed along the outer round surface of valve body under sparger (7), the cross section of described radial groove (33) is rectangle,
The lower end surface center of gas pressurizer shell (13) is connected with one end of gas diversion injection pipe (10), the other end of gas diversion injection pipe (10) bends 90 degree and is inserted into air flue (50), the other end end face of gas diversion injection pipe (10) is closed and adjacent with the air inlet (50-1) of intake duct (50), the other end outer round surface of gas diversion injection pipe (10) is processed with multiple radial spray orifice (11), described multiple radial spray orifice (11) is uniformly distributed along gas diversion injection pipe (10) outer round surface, air inlet (50-1) is provided with cyclone separator (40).
2. a kind of gaseous propellant engine mixed gas rectifying means according to claim 1, is characterized in that sparger upper valve body (20) is provided with wiring slot (21).
3. a kind of gaseous propellant engine mixed gas rectifying means according to claim 1, is characterized in that armature (31) place of taking a seat is sealed by sealing material.
4. a kind of gaseous propellant engine mixed gas rectifying means according to claim 1,2 or 3, it is characterized in that described cyclone separator (40) comprises flange body (38) and blast fan (37), blast fan (37) is fixedly embedded in the center drilling place of flange body (38), described blast fan (37) and gas diversion injection pipe (10) and intake duct (50) coaxial inner conductor.
5. a kind of gaseous propellant engine mixed gas rectifying means according to claim 1,2 or 3, it is characterized in that gas pressurizer shell (13) is connected with valve body under sparger (7) by screw thread, and sealed by sealing gasket (14).
6. a kind of gaseous propellant engine mixed gas rectifying means according to claim 1,2 or 3, is characterized in that ECU, potentiometer (35), amplifier (36) constitute proportional control circuit.
7. a kind of gaseous propellant engine mixed gas rectifying means according to claim 1,2 or 3, it is characterized in that in sparger upper valve body (20) and lower valve body (7), there is a mutually corresponding chamber, sparger upper valve body (20) and lower valve body (7) adopt seam location and utilize sealing gasket (18) to seal, positioning hole (4) is positioned at lower valve body, and upper valve body (20) and lower valve body (7) assembling are compressed by Flange joint by sparger upper shell (19) and lower shell body (16).
8. a kind of gaseous propellant engine mixed gas rectifying means according to claim 7, it is characterized in that upper valve body (20) and lower valve body (7) assembling are compressed by bolt (2) and bolt (5) by sparger upper shell (19) and lower shell body (16), joint scribbles sealer.
9. a kind of gaseous propellant engine mixed gas rectifying means according to claim 1,2 or 3, is characterized in that armature (31) middle part external diameter is less than armature (31) two ends external diameter.
10. a kind of gaseous propellant engine mixed gas rectifying means according to claim 1,2 or 3, is characterized in that armature (31) surface and the surface contacted with armature (31) all have nitriding layer and all scribble polytetrafluoroethylene floor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510689537.8A CN105156234A (en) | 2015-10-21 | 2015-10-21 | Combination gas blending device for gaseous propellant engine |
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| CN201510689537.8A CN105156234A (en) | 2015-10-21 | 2015-10-21 | Combination gas blending device for gaseous propellant engine |
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| CN201510689537.8A Pending CN105156234A (en) | 2015-10-21 | 2015-10-21 | Combination gas blending device for gaseous propellant engine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485397A (en) * | 2016-01-29 | 2016-04-13 | 成都杜嘉机电有限公司 | Electromagnetic valve for regulating gas flow |
| CN105673256A (en) * | 2016-01-29 | 2016-06-15 | 成都杜嘉机电有限公司 | Gas flow adjusting valve |
| CN107061061A (en) * | 2017-06-28 | 2017-08-18 | 哈尔滨工程大学 | A kind of integrated form of mixed admission intersects annular groove gaseous fuel jet mixing device |
| CN107131074A (en) * | 2017-06-28 | 2017-09-05 | 哈尔滨工程大学 | A kind of integrated form ring manifold wall gaseous fuel jet mixing device with piezo actuator |
| CN107420207A (en) * | 2017-06-28 | 2017-12-01 | 哈尔滨工程大学 | A kind of integrated form of axial admission intersects annular groove gaseous fuel jet mixing device |
| CN109236504A (en) * | 2018-11-22 | 2019-01-18 | 潍坊力创电子科技有限公司 | Gas engine air/gas mixing arrangement |
| CN111305989A (en) * | 2020-02-18 | 2020-06-19 | 哈尔滨工程大学 | Coaxial double-pipe gas injection device of natural gas hydrogen double-gas fuel starting electrode |
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| CN204572256U (en) * | 2015-04-10 | 2015-08-19 | 尹平 | Automobile high efficiency burnt gas mixer |
| CN205064127U (en) * | 2015-10-21 | 2016-03-02 | 中国船舶重工集团公司第七�三研究所 | Gaseous fuel engine gas mixture modulating device |
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| US4946107A (en) * | 1988-11-29 | 1990-08-07 | Pacer Industries, Inc. | Electromagnetic fuel injection valve |
| US20010032895A1 (en) * | 2000-02-10 | 2001-10-25 | Meyer Andrew E. | Variable orifice electronically controlled common rail injector (VOECRRI) |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485397A (en) * | 2016-01-29 | 2016-04-13 | 成都杜嘉机电有限公司 | Electromagnetic valve for regulating gas flow |
| CN105673256A (en) * | 2016-01-29 | 2016-06-15 | 成都杜嘉机电有限公司 | Gas flow adjusting valve |
| CN107061061A (en) * | 2017-06-28 | 2017-08-18 | 哈尔滨工程大学 | A kind of integrated form of mixed admission intersects annular groove gaseous fuel jet mixing device |
| CN107131074A (en) * | 2017-06-28 | 2017-09-05 | 哈尔滨工程大学 | A kind of integrated form ring manifold wall gaseous fuel jet mixing device with piezo actuator |
| CN107420207A (en) * | 2017-06-28 | 2017-12-01 | 哈尔滨工程大学 | A kind of integrated form of axial admission intersects annular groove gaseous fuel jet mixing device |
| CN107420207B (en) * | 2017-06-28 | 2023-05-30 | 哈尔滨工程大学 | Integrated cross ring groove gas fuel injection mixing device with axial air inlet |
| CN107131074B (en) * | 2017-06-28 | 2023-08-01 | 哈尔滨工程大学 | Integrated annular manifold wall surface gas fuel injection mixing device with piezoelectric actuator |
| CN109236504A (en) * | 2018-11-22 | 2019-01-18 | 潍坊力创电子科技有限公司 | Gas engine air/gas mixing arrangement |
| CN109236504B (en) * | 2018-11-22 | 2023-08-29 | 潍坊力创电子科技有限公司 | Air/gas mixing device for gas engine |
| CN111305989A (en) * | 2020-02-18 | 2020-06-19 | 哈尔滨工程大学 | Coaxial double-pipe gas injection device of natural gas hydrogen double-gas fuel starting electrode |
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Application publication date: 20151216 |