CN204738888U - Gas injection valve for engine - Google Patents
Gas injection valve for engine Download PDFInfo
- Publication number
- CN204738888U CN204738888U CN201520496217.6U CN201520496217U CN204738888U CN 204738888 U CN204738888 U CN 204738888U CN 201520496217 U CN201520496217 U CN 201520496217U CN 204738888 U CN204738888 U CN 204738888U
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- moving coil
- air outlet
- valve
- gas
- spool
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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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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model provides a gas injection valve for engine, includes valve case, gas outlet case subassembly and upper cover subassembly. The valve case inner chamber divide into gas air inlet housing, gas high pressure studio, gas low pressure discharge chamber, gas outlet case subassembly includes motion dish, gas outlet case and packing ring, the upper cover subassembly includes upper cover, solenoid valve, locking bush and spring. The mode that adopts high -speed powerful electromagnetic valve drive armature realizes the valve open function. During solenoid valve powered on, motion dish subassembly receives powerful electromagnetic force, lifting rapidly, and valve open supplies the gas to the engine, during solenoid valve powered off, motion dish subassembly is taken a seat rapidly under the effect of spring pretightning force to the pressure differential that combines high -pressure gas to produce on the boss makes sealed respond wellly.
Description
Technical field
The utility model belongs to Diesel Engine Technique Field, is specifically related to fuel gas injection valve.
Background technique
Along with the increasingly stringent of boats and ships Abgasgesetz and the constantly soaring of fuel price, gas machine and duel fuel engine status is in the international market more and more important.Fuel injection system is as the key components and parts of gas machine, duel fuel engine, and its performance directly affects power character and the emission performance of motor.Fuel gas injection valve is one of kernel component of gaseous fuel electric controlled multi-point gas jet machine (containing double fuel machine), can realize each cylinder air feed and charge stratification by stages at regular time and quantity, its service behaviour has very important impact to the power character of gas machine or duel fuel engine, emission performance.
At present, the ability to provide the auxiliary items of China's fuel gas injection valve is lower, heavy dependence import, cause research and development and industry bad situation seriously under one's control, add the external blockade to its key technology, systematically carry out the independent research of fuel gas injection valve, form the series product with independent intellectual property right, seem very necessary and important.
Summary of the invention
The utility model proposes a kind of motor fuel gas injection valve, mainly for power per cylinder is the gaseous propellant engine of 100kW ~ 350kW multi-point injection or duel fuel engine design, it adopts ECM electric control controlling technique, with the switch of the form control combustion gas of powerful solenoid-driven moving coil assembly, thus realize carrying out stepless soft readjustment to gas injection initial point and injection duration, accurately can control the fuel gas injection amount to the every cylinder of main frame.
The technical solution of the utility model is as follows:
A kind of motor fuel gas injection valve, mainly comprise cover assembly, air outlet mangetic core assembly and valve chest, described air outlet mangetic core assembly is contained in valve chest, is covered fixing by cover assembly.
The inner chamber of described valve chest is divided into three regions: gas inlet room, combustion gas high-pressure work room, Low Pressure Gas Network discharge chamber, three is communicated with successively.
Described air outlet mangetic core assembly comprises moving coil, air outlet spool and packing ring, and described cover assembly comprises upper cover, solenoid valve, stop bushing and spring.Concrete structure is as follows:
Air outlet spool screw thread in upper cover and valve chest is rigidly connected, and solenoid valve and moving coil are arranged in upper cover and air outlet spool, and the coil receptacle of solenoid valve stretches out from upper cover.
Space in the spool of air outlet under moving coil is described Low Pressure Gas Network discharge chamber, described combustion gas high-pressure work room is formed between spool periphery, air outlet and valve chest, air outlet spool is symmetrical 8 annular air scoops along the circumferential direction, for being communicated with combustion gas high-pressure work room and Low Pressure Gas Network discharge chamber when valve is opened.
Described moving coil is divided into moving coil upper body and moving coil lower body, and both are rigidly connected by screw thread, and moving coil upper body is arranged in solenoid valve lower end surface as armature, upwards picks up moving coil upper body when being energized; At the central shaft of solenoid valve to being equipped with stop bushing and a spring, spring upper end withstands on stop bushing, and lower end is pressed on lower spring cup, and lower spring cup is contained in upper end, moving coil upper body; Near the outlet of air outlet spool, packing ring is housed, the lower end surface of Moving plate lower body and packing ring upper-end surface with coordinate, both end face cooperation positions correspond to the annular air scoop on the spool of air outlet, moving coil upper body is separated with packing ring when picking up, combustion gas high-pressure work room is communicated with Low Pressure Gas Network discharge chamber, is close to realizes sealing when power-off by the pretightening force both ends of the surface of spring.
The utility model has the advantage of:
1, Design of High-Speed Powerful Solenoid Based is adopted to drive the mode of armature to realize valve opening function: during solenoid valves, moving coil assembly is subject to powerful electromagnetic force, rapid lifting, and valve opening supplies combustion gas to motor; During solenoid valve power-off, take a seat rapidly at the move under influence dish assembly of initial tension of spring, and in conjunction with the pressure difference that pressurized gas produce on boss, make sealing effect good.The action of ripe electric control system controls solenoid valve can be adopted simultaneously, make whole system respond rapidly, precisely, be well positioned to meet the air feed rule of motor.
2, upper cover and air outlet spool, moving coil upper body (armature) use screw thread to be rigidly connected with moving coil lower body, make injection valve compact structure, reliability high.
3, moving coil upper body adopts high duty alloy material, and surface adopts coating process.Powerful electromagnetic force requirement can be met, the corrosion of combustion gas can be resisted again preferably.
4, single spring structure is used to design, moving coil lower body boss upper and lower surface devises difference in areas dexterously, and the pressure reduction utilizing high-pressure gas to produce to strengthen sealing effect, thus reduces the pretightening force requirement of spring, alleviate the shock of moving coil lower body and air outlet spool, improve working life.
5, solenoid valve lower end surface 0.1-0.2mm is protruded in stop bushing lower end surface, effectively avoids solenoid valve to clash into by moving coil upper body; Stop bushing, lower spring cup carry out high hardness surface treatment, wear-resisting and can anti-intense impact, long service life.
6, air outlet spool along the circumferential direction symmetrical annular air scoop, can be subject to radial combustion gas impact by balance exercise dish assembly, increase the stationarity of movement parts, and can ensure enough circulation areas.
8, the inner chamber of fuel gas injection valve is divided into three regions: gas inlet room, combustion gas high-pressure work room, Low Pressure Gas Network discharge chamber.Between gas inlet room and high-pressure work room, separate with high density, high-precision net-filter assembly, to ensure the pure of combustion gas; By high tenacity diaphragm seal between high-pressure work room and low pressure discharge chamber, and adopt pressure compensating method, working pressure is stablized.
Accompanying drawing explanation
Fig. 1 a is motor fuel gas injection valve section of structure (closed condition).
Fig. 1 b is motor fuel gas injection valve section of structure (opening state).
Fig. 2 is the outline drawing of fuel gas injection valve shown in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, this technology is described.
This fuel gas injection valve is mainly for power per cylinder is the gaseous propellant engine of 100kW ~ 350kW multi-point injection or duel fuel engine design.When it is opened completely, circulation area is 240mm
2~ 260mm
2, lift 1.2mm ~ 1.4mm, the highest suction pressure can reach 8bar, can bear air inlet/outlet Maximum differential pressure 3bar.Different according to air inlet/outlet pressure reduction, flow is adjustable within the scope of 0-200g/s, normally can run under-20 DEG C ~ 105 DEG C environment.
Participate in Fig. 1 a and Fig. 1 b, this fuel gas injection valve is made up of parts such as cover assembly 1, air outlet mangetic core assembly 3, net-filter assembly 2 and valve chests 4, adopts automatical control system, drives electromagnetic valve work, realizes the opening and closing function to valve.
Valve chest 4 inner chamber is divided into three regions: gas inlet room 41, combustion gas high-pressure work room 42, Low Pressure Gas Network discharge chamber 43.Between gas inlet room 41 and combustion gas high-pressure work room 42, separate with high density, high-precision net-filter assembly 2, to ensure the pure of combustion gas; Sealed by high tenacity seal membrane 5 between combustion gas high-pressure work room 42 and Low Pressure Gas Network discharge chamber 43, and adopt pressure compensating method, working pressure is stablized.
Cover assembly 1 comprises upper cover 11, solenoid valve 12, stop bushing 13 and spring 14.
Air outlet mangetic core assembly 3 comprises moving coil 31, air outlet spool 32 and packing ring 33.Moving coil 31 comprises Moving plate upper body 311 and moving coil lower body 312
Upper cover 11 is designed to screw thread with air outlet spool 32, moving coil upper body 311 with moving coil lower body 312 and is rigidly connected, and makes its compact overall structure, reliability high.
Upper cover 11 is rigidly connected with air outlet spool 32 screw thread in valve chest, and solenoid valve 12 and moving coil 31 are arranged in upper cover and air outlet spool, and the coil receptacle 121 of solenoid valve stretches out from upper cover 11.
Space in air outlet spool 32 under moving coil 31 is described Low Pressure Gas Network discharge chamber 43, described combustion gas high-pressure work room 42 is formed between air outlet spool 32 periphery and valve chest 4, air outlet spool 32 is symmetrical eight annular air scoops 321 along the circumferential direction, for being communicated with combustion gas high-pressure work room 42 and Low Pressure Gas Network discharge chamber 43 when valve is opened.
The moving coil upper body 311 of moving coil is arranged in solenoid valve 12 lower end surface as armature, upwards picks up moving coil upper body when being energized.At the central shaft of solenoid valve to being equipped with stop bushing 13 and spring 14, spring 14 upper end withstands on stop bushing 13, and lower end is pressed on lower spring cup 15, and lower spring cup 15 is contained in upper end, moving coil upper body 311.Near the outlet of air outlet spool, packing ring 33 is housed, the lower end surface of moving coil lower body 312 and packing ring 33 upper-end surface with coordinate, both end face cooperation positions correspond to the annular air scoop 321 on the spool of air outlet, radial combustion gas impact can be subject to by balance exercise dish assembly, increase the stationarity of movement parts, and enough circulation areas can be ensured.Moving coil upper body is separated with packing ring when picking up, and combustion gas high-pressure work room is communicated with Low Pressure Gas Network discharge chamber, is close to realizes sealing when power-off by the pretightening force both ends of the surface of spring.
Described moving coil upper body 311 adopts high duty alloy material, and surface adopts coating process, can meet powerful electromagnetic force requirement, can resist again the corrosion of combustion gas preferably.
Described fuel gas injection valve uses single spring structure to design, there is a circle boss 313 periphery of moving coil lower body 312, the upper and lower surface of boss has difference in areas, below area is greater than above, the pressure reduction utilizing high-pressure gas to produce is to strengthen sealing effect, thus reduce the pretightening force requirement of spring, alleviate the shock of moving coil lower body and air outlet spool, improve working life.
Solenoid valve lower end surface 0.1-0.2mm is protruded in described stop bushing 13 lower end surface, clashes into by moving coil upper body effectively to avoid solenoid valve.In addition, high hardness surface treatment is carried out to stop bushing, lower spring cup, wear-resisting and can anti-intense impact, long service life.
This fuel gas injection valve adopts Design of High-Speed Powerful Solenoid Based to drive the mode of armature to realize valve opening function: during solenoid valves, moving coil assembly is subject to powerful electromagnetic force, rapid lifting, and valve opening supplies combustion gas to motor; During solenoid valve power-off, take a seat rapidly at the move under influence dish assembly of initial tension of spring, and in conjunction with the pressure difference that pressurized gas produce on boss, make sealing effect good.
This fuel gas injection valve can adopt the action of ripe electric control system controls solenoid valve, makes whole system respond rapidly, precisely, be well positioned to meet the air feed rule of motor.
This fuel gas injection valve is arranged in intake manifold, can be used for gaseous propellant engine and the duel fuel engine of multi-point injection.It adopts ECM ECU (Electrical Control Unit) technology, and the quick unlatching of injection valve is controlled by high-speed electromagnetic valve, applies active force during solenoid valves to moving coil, and moving coil is moved upward, and starts air inlet; Injection valve quick closedown is controlled by spring.Specific works process is as follows: when solenoid valve is not energized, gaseous fuel enters suction chamber by fuel gas inlet, screen component enters the working voltage chamber of valve chest after filtering after filtration, under the differential pressure action that moving coil assembly produces moving coil lower body at initial tension of spring, pressurized gas, can well be pressed on packing ring, gaseous fuel can not be injected into engine intake; During solenoid valves, moving coil assembly is under the effect of electromagnetic attraction, overcome initial tension of spring, frictional force and other resistances and move upward, moving coil assembly is no longer compressed with packing ring, injection valve is opened, gaseous fuel flows into through the gap between moving coil lower body and packing ring low pressure chamber of giving vent to anger, and enters engine intake.
Fig. 2 is the profile of this fuel gas injection valve, as seen its compact structure.
Claims (7)
1. a motor fuel gas injection valve, comprises valve chest, air outlet mangetic core assembly and cover assembly, it is characterized in that:
The inner chamber of described valve chest is divided into three regions: gas inlet room, combustion gas high-pressure work room, Low Pressure Gas Network discharge chamber, and three is communicated with successively;
Described air outlet mangetic core assembly comprises moving coil, air outlet spool and packing ring;
Described cover assembly comprises upper cover, solenoid valve, stop bushing and spring;
Air outlet spool screw thread in upper cover and valve chest is rigidly connected, and solenoid valve and moving coil are arranged in upper cover and air outlet spool, and the coil receptacle of solenoid valve stretches out from upper cover;
Space in the spool of air outlet under moving coil is described Low Pressure Gas Network discharge chamber, described combustion gas high-pressure work room is formed between spool periphery, air outlet and valve chest, air outlet spool is symmetrical multiple annular air scoop along the circumferential direction, for being communicated with combustion gas high-pressure work room and Low Pressure Gas Network discharge chamber when valve is opened;
Described moving coil is divided into moving coil upper body and moving coil lower body, and both are rigidly connected by screw thread, and moving coil upper body is arranged in solenoid valve lower end surface as armature, upwards picks up moving coil upper body when being energized; At the central shaft of solenoid valve to being equipped with stop bushing and a spring, spring upper end withstands on stop bushing, and lower end is pressed on lower spring cup, and lower spring cup is contained in upper end, moving coil upper body; Near the outlet of air outlet spool, packing ring is housed, the lower end surface of Moving plate lower body and packing ring upper-end surface with coordinate, both end face cooperation positions correspond to the annular air scoop on the spool of air outlet, moving coil upper body is separated with packing ring when picking up, combustion gas high-pressure work room is communicated with Low Pressure Gas Network discharge chamber, is close to realizes sealing when power-off by the pretightening force both ends of the surface of spring.
2. motor fuel gas injection valve according to claim 1, it is characterized in that, there is a circle boss periphery of described moving coil lower body, and the upper and lower surface of boss has difference in areas, below area is greater than above, the pressure reduction utilizing high-pressure gas to produce is to strengthen sealing effect.
3. motor fuel gas injection valve according to claim 1, is characterized in that, solenoid valve lower end surface 0.1-0.2mm is protruded in described stop bushing lower end surface; Stop bushing, lower spring cup carry out high hardness surface treatment.
4. motor fuel gas injection valve according to claim 1, is characterized in that, is provided with net-filter assembly and separates between described gas inlet room and high-pressure work room.
5. motor fuel gas injection valve according to claim 1, is characterized in that, is provided with high tenacity seal membrane between described high-pressure work room and low pressure discharge chamber.
6. motor fuel gas injection valve according to claim 1, is characterized in that, moving coil upper body adopts alloy material, and surface adopts coating process.
7. motor fuel gas injection valve according to claim 1, is characterized in that, described air outlet spool is symmetrical eight annular air scoops along the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520496217.6U CN204738888U (en) | 2015-07-10 | 2015-07-10 | Gas injection valve for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520496217.6U CN204738888U (en) | 2015-07-10 | 2015-07-10 | Gas injection valve for engine |
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| Publication Number | Publication Date |
|---|---|
| CN204738888U true CN204738888U (en) | 2015-11-04 |
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ID=54420628
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520496217.6U Active CN204738888U (en) | 2015-07-10 | 2015-07-10 | Gas injection valve for engine |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275672A (en) * | 2015-07-10 | 2016-01-27 | 重庆红江机械有限责任公司 | Electric control gas injection valve for engine |
| CN107091172A (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 axial admission |
| CN107091354A (en) * | 2017-06-28 | 2017-08-25 | 哈尔滨工程大学 | Fuel gas injection valve is oriented in a kind of piezoelectric type of through type axial admission |
| 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 |
| CN107143437A (en) * | 2017-06-28 | 2017-09-08 | 哈尔滨工程大学 | Fuel gas injection valve is oriented to outside a kind of piezoelectric type of the through type with floating valve seat |
| CN107143438A (en) * | 2017-06-28 | 2017-09-08 | 哈尔滨工程大学 | A kind of outer guiding fuel gas injection valve of through type with floating valve seat |
| CN107165746A (en) * | 2017-06-28 | 2017-09-15 | 哈尔滨工程大学 | A kind of outer guiding fuel gas injection valve of bypass type with floating valve seat |
| CN107178451A (en) * | 2016-03-09 | 2017-09-19 | 曼柴油机和涡轮机公司-德国曼柴油机和涡轮机欧洲股份公司之分公司 | The injection valve of internal combustion engine |
| CN109563790A (en) * | 2016-08-10 | 2019-04-02 | 罗伯特·博世有限公司 | For being blown into the valve of the Electromagnetically activatable of gas |
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2015
- 2015-07-10 CN CN201520496217.6U patent/CN204738888U/en active Active
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275672A (en) * | 2015-07-10 | 2016-01-27 | 重庆红江机械有限责任公司 | Electric control gas injection valve for engine |
| CN107178451A (en) * | 2016-03-09 | 2017-09-19 | 曼柴油机和涡轮机公司-德国曼柴油机和涡轮机欧洲股份公司之分公司 | The injection valve of internal combustion engine |
| CN107178451B (en) * | 2016-03-09 | 2019-11-12 | 曼柴油机和涡轮机公司-德国曼柴油机和涡轮机欧洲股份公司之分公司 | The injection valve of internal combustion engine |
| CN109563790A (en) * | 2016-08-10 | 2019-04-02 | 罗伯特·博世有限公司 | For being blown into the valve of the Electromagnetically activatable of gas |
| 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 |
| CN107143438A (en) * | 2017-06-28 | 2017-09-08 | 哈尔滨工程大学 | A kind of outer guiding fuel gas injection valve of through type with floating valve seat |
| CN107165746A (en) * | 2017-06-28 | 2017-09-15 | 哈尔滨工程大学 | A kind of outer guiding fuel gas injection valve of bypass type with floating valve seat |
| CN107143437A (en) * | 2017-06-28 | 2017-09-08 | 哈尔滨工程大学 | Fuel gas injection valve is oriented to outside a kind of piezoelectric type of the through type with floating valve seat |
| CN107091354A (en) * | 2017-06-28 | 2017-08-25 | 哈尔滨工程大学 | Fuel gas injection valve is oriented in a kind of piezoelectric type of through type axial admission |
| CN107091172A (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 axial admission |
| CN107143438B (en) * | 2017-06-28 | 2023-05-30 | 哈尔滨工程大学 | Straight-through type external guiding gas injection valve with floating valve seat |
| CN107091172B (en) * | 2017-06-28 | 2023-06-09 | 哈尔滨工程大学 | Straight-through type axially-inlet internal guide gas injection valve |
| CN107143437B (en) * | 2017-06-28 | 2023-06-09 | 哈尔滨工程大学 | Straight-through piezoelectric type external guide gas injection valve with floating valve seat |
| CN107165746B (en) * | 2017-06-28 | 2023-06-09 | 哈尔滨工程大学 | Bypass type externally-guided gas injection valve with floating valve seat |
| 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 |
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