CN106121867A - A kind of gaseous propellant engine fuel gas electric spray valve - Google Patents
A kind of gaseous propellant engine fuel gas electric spray valve Download PDFInfo
- Publication number
- CN106121867A CN106121867A CN201610771921.7A CN201610771921A CN106121867A CN 106121867 A CN106121867 A CN 106121867A CN 201610771921 A CN201610771921 A CN 201610771921A CN 106121867 A CN106121867 A CN 106121867A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve block
- fuel gas
- electric spray
- block
- 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.)
- Granted
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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
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- 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)
- Analytical Chemistry (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a kind of gaseous propellant engine fuel gas electric spray valve, including housing, electromagnetic valve components and valve hole part.Valve hole part includes spool, valve block, valve seat and armature, valve block is arranged in spool, valve block is fixing with armature lower end to be connected, during electromagnetic valve components energising, under electromagnetic force, armature pulls described valve block to move up, make to be formed between the lower surface of valve block and the upper surface of valve seat blast tube, during electromagnetic valve components power-off, the lower surface of valve block forms sealing surface with the upper surface laminating of valve seat, blocks blast tube.The present invention can be applicable to high speed gas machine and dual fuel engine, it is possible to meets fast response time, and gas metering is accurate, covers power per cylinder scope and extensively waits requirement.
Description
Technical field
The present invention relates to gas machine and dual fuel engine parts, use more specifically to a kind of gaseous propellant engine
Fuel gas electric spray valve.
Background technology
NOx, SOx in waste gas and particle content limit value are defined the strictest by new Abgasgesetz.Along with market
Strong pursuit to cleaning power, Engine Industry is just greatly developing gaseous propellant engine technology.Gas machine ferryboat is in Norway
Successful operation, towboat also will following closely.For many years, double fuel even trifuel engine is as LNG ship oceangoing ship and sea
The power of upper oil gas platform.Gaseous fuel has a feature of himself as one of main fuel: low temperature, unlubricated, the most dry
Dry and corrosivity.In view of the difference of gaseous fuel Yu traditional fuel, design and the manufacture of fuel feed system will certainly
Face many new challenges.
Gaseous propellant engine fuel gas electric spray valve, as the kernel component in fuel feed system, sealing surface is easy
There is cold-welding effect, accelerate sealing surface wear, and then limit the service life of electric spray valve.Gaseous fuel as flammable gas and
It is susceptible to leakage, occurs toward air intake duct direction leakage can cause the decline of engine performance, the external world can be caused toward extraneous leakage
Environmental security hidden danger, should adopt an effective measure the most in the design process, disclosure risk is down to minimum.In order to make gas machine work
Stablizing, it is desirable to the fast response time of fuel gas injection valve, concordance is good.
Summary of the invention
It is an object of the invention to provide a kind of gaseous propellant engine fuel gas electric spray valve, it is possible to be applicable to high speed gas
Machine and dual fuel engine, it is possible to meet fast response time, gas metering is accurate, covers power per cylinder scope and extensively waits requirement.
Gaseous propellant engine fuel gas electric spray valve of the present invention, including housing, electromagnetic valve components and valve hole part, electricity
Magnet valve parts and valve hole part are arranged on housing, and electromagnetic valve components is positioned at above valve hole part.Described electromagnetic valve components includes
Solenoid valve casing and iron-core coil.
Described valve hole part includes spool, valve block, valve seat and armature, and the lower end of armature is positioned at the centre bore of spool；Valve
Sheet is arranged in spool, and valve block is positioned at the lower section of armature, and valve block is connected by screw and armature lower end are fixing, the lower surface of valve block
Matching with the upper surface of valve seat, during electromagnetic valve components energising, under electromagnetic force, described armature pulls described valve block upwards
Mobile, make to be formed between the lower surface of valve block and the upper surface of valve seat blast tube, during electromagnetic valve components power-off, the following table of valve block
Face forms sealing surface with the upper surface laminating of valve seat, blocks blast tube, and this blast tube enters with the combustion gas being arranged on housing
Mouth connects with gas outlet.Realization preferably seals, and need to carry out described valve block lower surface and described valve seat upper surface strictly
Roughness control.
Further, valve block is arranged in spool by spring, and the two ends up and down of spring are connected with spool and valve block respectively.Bullet
Spring is taken a seat for described valve block and is provided stable restoring force, alleviates the abrasion of sealing surface, and spring can play the role of positioning simultaneously so that
Described valve block and the first air channel of described valve seat and the second air channel are able to precise match and form sealing surface, valve block at spring and
It is pressed on described valve seat under the synergy of draught head, there is good self sealss effect.Meanwhile, the spring of setting is permissible
Pressure reduction sudden change before and after electric spray valve, the pressure in motor intake manifold, higher than during for combustion gas atmospheric pressure, prevents engine charge
Pour in down a chimney entrance fuel gas supply conduit.
Further, the sidewall of valve block offering passage, the lower surface of valve block offers the first air channel, the first ventilation
Groove connects with described passage, and the upper surface of valve seat offers the second air channel, and the lower surface of valve seat offers pod apertures, water conservancy diversion
Hole connects with the second air channel.Ensureing not formed in upstream when described valve block is opened to dam, reduce the pressure loss, seat bottom portion sets
Pod apertures, communicate with the second air channel of described valve seat upper surface, fuel gas injection can be made more stable.
Further, described first air channel is made up of the multiple concentric annular grooves being arranged in valve block lower surface, each annular
Connected by pore between groove；Second air channel is made up of the multiple concentric annular groove structures being arranged in valve seat upper surface, each
Connected by pore between cannelure.This structure, in the case of the design lift of valve block is less, can form bigger circulation
Area.Circulation area means that more greatly this electric spray valve will have broader range of flow, the power model of the electromotor that can mate
Enclosing and increase the most accordingly, purposes is more extensive.Owing to lift is less, therefore, stroke speed when valve block is taken a seat is less, and this design can
To alleviate the shock of movement parts, increase the sealing surface life-span.
Further, described housing uses hard aluminium alloy to make, it is to avoid described electromagnetic valve components is done by described housing
Disturb, on the premise of proof strength, improve response speed.Meanwhile, the weight of electric spray valve assembly is alleviated.
Further, electromagnetic valve components and valve hole part are coaxially mounted on housing.
Further, the iron core of described iron-core coil is E shape, uses ferrum silicochromium flaky material stacking to form, it is provided that more
Big electromagnetic force, the most effectively suppresses the current vortex in described iron core to produce, and then weakens current vortex to described electromagnetic valve components
The impact of response speed.
Further, between magnet valve parts and housing, between valve hole part and housing and the fuel gas inlet of housing and combustion
Gas outlet is around mounted on the O RunddichtringO of high performance fluorubber material, blocks the leakage path of combustion gas, improves EFI
The reliability of valve and safety in utilization.
Gaseous propellant engine fuel gas electric spray valve of the present invention, owing to having said structure, electromagnetic valve components is energized
Time, under electromagnetic force, armature pulls valve block to move up, and sealing surface is unfolded into blast tube, electromagnetic valve components power-off
Time, under the effect of spring force and gravity, valve block is taken a seat, and the lower surface of valve block forms sealing surface with the upper surface laminating of valve seat
Form sealing surface and block blast tube, all use the structure of concentric annular groove to set at the lower surface of valve block with the upper surface of valve seat
Meter, this structure, in the case of the design lift of valve block is less, can form bigger circulation area, makes electric spray valve will have more
Wide range of flow, the power bracket of the electromotor that can mate increases the most accordingly, and purposes is more extensive.The present invention has response speed
Degree is fast, and gas metering is accurate, covers the features such as power per cylinder scope is wide.It is 90kW～600kW that the present invention is applied to power per cylinder
High speed gas machine or dual fuel engine.When fully opening, actual internal area is 400mm2～500mm2, lift 0.38mm
～0.42mm, can be properly functioning under-20 DEG C～105 DEG C of environment.
Accompanying drawing explanation
Fig. 1 is the axonometric drawing of the present invention；
Fig. 2 is the internal structure schematic diagram of the present invention；
Fig. 3 is the structural representation of electromagnetic valve components in the present invention；
Fig. 4 is the structural representation of valve hole part in the present invention；
Fig. 5 is the axonometric drawing of middle valve plate of the present invention；
Fig. 6 is the axonometric drawing of valve seat in the present invention；
Fig. 7 is the axonometric drawing of another angle of valve seat in the present invention.
Detailed description of the invention
In order to technical scheme is explained further, come that the present invention will be described in detail below in conjunction with the accompanying drawings.
See shown in Fig. 1 to Fig. 7, this gaseous propellant engine fuel gas electric spray valve, including housing 9, electromagnetic valve components and
Valve hole part, electromagnetic valve components and valve hole part are coaxially mounted on housing, and electromagnetic valve components is positioned at above valve hole part.Housing
9 use hard aluminium alloys to make, between magnet valve parts and housing 9, between valve hole part and housing 9 and the combustion gas of housing 9
The O RunddichtringO 10 of high performance fluorubber material it is mounted on around import and gas outlet.Described electromagnetic valve components includes
Solenoid valve casing 1 and iron-core coil 2, the iron core 21 of iron-core coil 2 is E shape, uses ferrum silicochromium flaky material stacking to form.
Described valve hole part includes that spool 4, valve block 6, valve seat 7 and armature 3, described spool 4 lower edge are pressed on described valve seat 7
On.Described armature 3 is T-shaped, and its lower end is positioned at the centre bore of spool 4.Valve block 6 is arranged in spool 4 by multiple springs 5,
The two ends up and down of spring 5 are connected with spool 4 and valve block 6 respectively.Valve block 6 is positioned at the lower section of armature 3, and valve block 6 is by screw 8 and rank
Ferrum 3 lower end is fixing to be connected, and the lower surface of valve block 6 matches with the upper surface of valve seat 7, the sidewall of valve block 6 offers multiple logical
Pore 61, the lower surface of valve block 6 offers the first air channel 62, and the first air channel 62 is multiple concentric annular groove structure composition,
Connected by pore between each cannelure.The upper surface of valve seat 7 offers the second air channel 71, the second air channel 71 be also
Multiple concentric annular groove structures form, and are connected by pore between each cannelure.The lower surface of valve seat 7 offers 18 and leads
Discharge orifice 72, pod apertures 72 connects with the second air channel 71.During electromagnetic valve components energising, under electromagnetic force, armature 3 pulls valve
Sheet 6 moves up, and makes to be formed between lower surface and the upper surface of valve seat of valve block 6 blast tube, during electromagnetic valve components power-off, valve
The lower surface of sheet 6 and the laminating of the upper surface of valve seat form sealing surface, and (during laminating, the first air channel 62 is mutual with the second air channel 71
Stagger), block blast tube, this blast tube connects with the fuel gas inlet being arranged on housing and gas outlet.
Claims (8)
1. a gaseous propellant engine fuel gas electric spray valve, including housing (9), electromagnetic valve components and valve hole part, electromagnetic valve
Parts and valve hole part are arranged on housing, and electromagnetic valve components is positioned at above valve hole part, it is characterised in that:
Described electromagnetic valve components includes solenoid valve casing (1) and iron-core coil (2)；
Described valve hole part includes spool (4), valve block (6), valve seat (7) and armature (3), and the lower end of armature is positioned at the center of spool
In hole；Valve block is arranged in spool, and valve block is positioned at the lower section of armature, and valve block is fixing with armature lower end to be connected, the lower surface of valve block
Matching with the upper surface of valve seat, during electromagnetic valve components energising, under electromagnetic force, described armature (3) pulls described valve block
(6) move up, make to be formed between lower surface and the upper surface of valve seat of valve block (6) blast tube, during electromagnetic valve components power-off,
The upper surface laminating of the lower surface of valve block (6) and valve seat forms sealing surface, blocks blast tube, this blast tube be arranged on shell
Fuel gas inlet on body connects with gas outlet.
Gaseous propellant engine fuel gas electric spray valve the most according to claim 1, it is characterised in that: valve block (6) passes through spring
(5) being arranged in spool (4), the two ends up and down of spring are connected with spool (4) and valve block (6) respectively.
Gaseous propellant engine fuel gas electric spray valve the most according to claim 1 or claim 2, it is characterised in that: the sidewall of valve block (6)
On offer passage (61), the lower surface of valve block offers the first air channel (62), and the first air channel is with described passage even
Logical；The upper surface of valve seat (7) offers the second air channel (71), and the lower surface of valve seat offers pod apertures (72), pod apertures with
Second air channel connection.
Gaseous propellant engine fuel gas electric spray valve the most according to claim 3, it is characterised in that: described first air channel
(62) it is made up of the multiple concentric annular grooves being arranged in valve block lower surface, is connected by pore between each cannelure；Second leads to
Air drain (71) is made up of the multiple concentric annular groove structures being arranged in valve seat upper surface, between each cannelure by pore even
Logical.
Gaseous propellant engine fuel gas electric spray valve the most according to claim 1, it is characterised in that: described housing (9) uses
Hard aluminium alloy is made.
Gaseous propellant engine fuel gas electric spray valve the most according to claim 1, it is characterised in that: described electromagnetic valve components and
Valve hole part is coaxially mounted on housing (9).
Gaseous propellant engine fuel gas electric spray valve the most according to claim 1, it is characterised in that: described iron-core coil (2)
Iron core (21) be E shape, use ferrum silicochromium flaky material stacking form.
Gaseous propellant engine fuel gas electric spray valve the most according to claim 1, it is characterised in that: at magnet valve parts and housing
(9) it is respectively mounted sealing ring (10) between, between valve hole part and housing and around the fuel gas inlet of housing and gas outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610771921.7A CN106121867B (en) | 2016-08-31 | 2016-08-31 | A kind of gaseous propellant engine fuel gas electric spray valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610771921.7A CN106121867B (en) | 2016-08-31 | 2016-08-31 | A kind of gaseous propellant engine fuel gas electric spray valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106121867A true CN106121867A (en) | 2016-11-16 |
| CN106121867B CN106121867B (en) | 2019-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610771921.7A Active CN106121867B (en) | 2016-08-31 | 2016-08-31 | A kind of gaseous propellant engine fuel gas electric spray valve |
Country Status (1)
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107084075A (en) * | 2017-06-28 | 2017-08-22 | 哈尔滨工程大学 | A kind of anti-reverse integrated form intersects annular groove gaseous fuel jet mixing device |
| CN107084076A (en) * | 2017-06-28 | 2017-08-22 | 哈尔滨工程大学 | A kind of integrated form ring manifold wall gaseous fuel jet mixing device of mixed admission |
| CN107091359A (en) * | 2017-06-28 | 2017-08-25 | 哈尔滨工程大学 | A kind of interior guiding fuel gas injection valve of through type mixed admission |
| CN107091362A (en) * | 2017-06-28 | 2017-08-25 | 哈尔滨工程大学 | A kind of double electromagnetism fuel gas injection valves of adjustable actual internal area coaxial-type |
| CN107120214A (en) * | 2017-06-28 | 2017-09-01 | 哈尔滨工程大学 | A kind of anti-reverse integrated form ring manifold wall gaseous fuel jet mixing device |
| CN107131075A (en) * | 2017-06-28 | 2017-09-05 | 哈尔滨工程大学 | Fuel gas injection valve is oriented in a kind of piezoelectric type of the through type with floating valve seat |
| CN107131076A (en) * | 2017-06-28 | 2017-09-05 | 哈尔滨工程大学 | A kind of interior guiding fuel gas injection valve of through type with floating valve seat |
| CN107165748A (en) * | 2017-06-28 | 2017-09-15 | 哈尔滨工程大学 | Fuel gas injection valve is oriented to outside a kind of piezoelectric type of through type mixed admission |
| CN108915904A (en) * | 2018-08-23 | 2018-11-30 | 中国船舶重工集团公司第七研究所 | Gas engine unbalanced fuel gas injection valve |
| CN109404167A (en) * | 2018-12-29 | 2019-03-01 | 重庆红江机械有限责任公司 | Fuel gas injection valve and the gas or dual fuel engine for using it |
| CN111183305A (en) * | 2017-09-26 | 2020-05-19 | 株式会社山田制作所 | Valve device |
| CN113898498A (en) * | 2021-10-08 | 2022-01-07 | 重庆红江机械有限责任公司 | Axial-flow type intrinsically safe gas injection valve |
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| EP0491404A1 (en) * | 1990-12-19 | 1992-06-24 | Japan Electronic Control Systems Co., Ltd. | Fuel injection valve |
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| US20150000641A1 (en) * | 2013-06-26 | 2015-01-01 | Robert Bosch Gmbh | Method and device for injecting a gaseous medium |
| CN105649818A (en) * | 2014-11-28 | 2016-06-08 | 罗伯特·博世有限公司 | Direct-injecting gas injector with elastomer sealing seats and sealing edges |
| CN205977465U (en) * | 2016-08-31 | 2017-02-22 | 重庆红江机械有限责任公司 | Gaseous fuel is gas electricity injection valve for engine |
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2016
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| EP0491404A1 (en) * | 1990-12-19 | 1992-06-24 | Japan Electronic Control Systems Co., Ltd. | Fuel injection valve |
| CN101384845A (en) * | 2006-02-15 | 2009-03-11 | 罗伯特·博世有限公司 | Valve module for supplying in particular gaseous media |
| US20150000641A1 (en) * | 2013-06-26 | 2015-01-01 | Robert Bosch Gmbh | Method and device for injecting a gaseous medium |
| CN105649818A (en) * | 2014-11-28 | 2016-06-08 | 罗伯特·博世有限公司 | Direct-injecting gas injector with elastomer sealing seats and sealing edges |
| CN205977465U (en) * | 2016-08-31 | 2017-02-22 | 重庆红江机械有限责任公司 | Gaseous fuel is gas electricity injection valve for engine |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165748A (en) * | 2017-06-28 | 2017-09-15 | 哈尔滨工程大学 | Fuel gas injection valve is oriented to outside a kind of piezoelectric type of through type mixed admission |
| CN107091362A (en) * | 2017-06-28 | 2017-08-25 | 哈尔滨工程大学 | A kind of double electromagnetism fuel gas injection valves of adjustable actual internal area coaxial-type |
| 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 |
| CN107091359A (en) * | 2017-06-28 | 2017-08-25 | 哈尔滨工程大学 | A kind of interior guiding fuel gas injection valve of through type mixed admission |
| CN107131076A (en) * | 2017-06-28 | 2017-09-05 | 哈尔滨工程大学 | A kind of interior guiding fuel gas injection valve of through type with floating valve seat |
| CN107120214A (en) * | 2017-06-28 | 2017-09-01 | 哈尔滨工程大学 | A kind of anti-reverse integrated form ring manifold wall gaseous fuel jet mixing device |
| CN107131075A (en) * | 2017-06-28 | 2017-09-05 | 哈尔滨工程大学 | Fuel gas injection valve is oriented in a kind of piezoelectric type of the through type with floating valve seat |
| CN107084075A (en) * | 2017-06-28 | 2017-08-22 | 哈尔滨工程大学 | A kind of anti-reverse integrated form intersects annular groove gaseous fuel jet mixing device |
| CN107084076A (en) * | 2017-06-28 | 2017-08-22 | 哈尔滨工程大学 | A kind of integrated form ring manifold wall gaseous fuel jet mixing device of mixed admission |
| CN111183305A (en) * | 2017-09-26 | 2020-05-19 | 株式会社山田制作所 | Valve device |
| CN111183305B (en) * | 2017-09-26 | 2021-12-14 | 株式会社山田制作所 | Valve device |
| US11255249B2 (en) | 2017-09-26 | 2022-02-22 | Yamada Manufacturing Co., Ltd. | Valve device |
| CN108915904A (en) * | 2018-08-23 | 2018-11-30 | 中国船舶重工集团公司第七研究所 | Gas engine unbalanced fuel gas injection valve |
| CN109404167A (en) * | 2018-12-29 | 2019-03-01 | 重庆红江机械有限责任公司 | Fuel gas injection valve and the gas or dual fuel engine for using it |
| CN109404167B (en) * | 2018-12-29 | 2020-11-24 | 重庆红江机械有限责任公司 | Gas injection valve and gas or dual-fuel engine adopting same |
| CN113898498A (en) * | 2021-10-08 | 2022-01-07 | 重庆红江机械有限责任公司 | Axial-flow type intrinsically safe gas injection valve |
| CN113898498B (en) * | 2021-10-08 | 2024-02-06 | 重庆红江机械有限责任公司 | Axial-flow type intrinsically safe fuel gas injection valve |
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|---|---|
| CN106121867B (en) | 2019-08-20 |
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