CN102116222B - Oil-gas electronic injector of electronic injection piston-type engine - Google Patents
Oil-gas electronic injector of electronic injection piston-type engine Download PDFInfo
- Publication number
- CN102116222B CN102116222B CN 201010028037 CN201010028037A CN102116222B CN 102116222 B CN102116222 B CN 102116222B CN 201010028037 CN201010028037 CN 201010028037 CN 201010028037 A CN201010028037 A CN 201010028037A CN 102116222 B CN102116222 B CN 102116222B
- Authority
- CN
- China
- Prior art keywords
- fuel
- gas
- electromagnetic
- electromagnetic valve
- removable
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Fuel-Injection Apparatus (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The invention relates to an oil-gas electronic injector of an electronic injection piston-type engine, which is an electronic injection device capable of respectively or simultaneously supplying oil and gas to the electronic injection piston-type engine. The traditional electronic injection engine can realize dual-fuel converted supply or simultaneous supply without improving the engine any longer after using the electronic injection device. The electronic injection device belongs to the technical field of electromechanics, is a product applied to the electronic injection piston-type engine and can be widely used for automotive engines and generator sets. The electronic injection device is basically the same as the traditional multipoint electronic injection device in shape and size and comprises an upper fuel-oil fuel-gas inlet, an upper electromagnetic valve, a lower electromagnetic valve, a lower fuel-oil fuel-gas outlet, an electromagnetic valve circuit interface, and the like, wherein the upper fuel-oil fuel-gas inlet is arranged in a metal shell. The invention realizes that one device completes dual-fuel supply.
Description
Affiliated technical field:
The present invention relates to multiple spot EFI reciprocating engine with same device a kind of double fuel electric injection device of fuel feeding, air feed respectively or simultaneously; No longer need change after using this device, just can realize that conversion is supplied with or supplied with simultaneously to the motor dual-fuel motor.Belong to the electrical category technology and be applied to the product on the reciprocating engine, be widely used in the product that uses on motor car engine and the generator set.
Background technique and present application feature:
At present; The fuel supply of EFI reciprocating engine is that the multiple spot electric injection device is supplied with basically; Fuel also is fuel oil (gasoline or diesel oil) basically, and it has been widely used in various fields such as automobile and generator set, along with the anxiety of the energy; And the appearance of clean energy resource (rock gas and LPG), the increasing clean energy resource of bringing into use replaces the mode of fuel oil to use.And the fuel supply of reciprocating engine will realize the double fuel supply; And to exchange supply to two kinds of fuel; The electric injection device of available engine just can not have been satisfied the demand, and must reequip present repacking to motor; Be on air intake branch of the engine, to install a cover air feed electric injection device in addition additional just can reach the motor proper functioning, realize that double fuel exchanges supply and supplies with simultaneously.For petrol engine, be single fuel supply, when promptly using combustion gas, fuel oil supply system is not worked, and when using fuel oil, gas supply system is not worked.All will carry out work for DENG fuel oil and two kinds of systems of combustion gas, and diesel oil and two kinds of fuel of combustion gas to be supplied with according to a certain percentage just also and can reach the motor proper functioning.How no matter how above two cover systems work; Original engine electric spray device is to satisfy the dual-fuel requirement; To on air intake branch of the engine, install the fuel gas electric spray device in addition additional, make motor have two cover electric injection devices could satisfy double fuel and supply with that motor installs additional more loaded down with trivial details; The annex that increases is more, uses the popularization of clean fuel to be very limited to automobile.
Make the reciprocating engine proper functioning, need not install change additional to it again, just can reach fuel oil, combustion gas and supply with respectively with simultaneously, the realization double fuel is supplied with same electric injection device.Such double fuel electric injection device has been arranged, used double fuel to be more widely used automobile.Realized that really reciprocating engine uses the double fuel EFI of a cover electric injection device to supply with, and makes reciprocating engine fuel saving and clean environment firendly more.
Task of the present invention:
Can not carry out the situation that double fuel is supplied with in order to overcome present reciprocating engine multiple spot electric injection device, the present invention proposes EFI reciprocating engine oil gas double fuel EFI device.This device can make reciprocating engine can satisfy fuel oil, can satisfy a kind of double fuel electric injection device of fuel gas supply again.This device divides two kinds: a kind of is for the motor that ignition mechanism is arranged; This motor only needs a kind of fuel supply just can proper functioning, so fuel-firing gas-firing is same import; Outlet is respectively different outlets, and the exchange of using this device can carry out fuel oil and combustion gas is supplied with; A kind of in addition is the compression ignite class motor that does not have ignition mechanism, and fuel oil and combustion gas will be supplied with simultaneously, and its import is respectively independently import, and outlet is respectively different outlets, and two kinds of fuel will be supplied with according to a certain percentage simultaneously, and motor could proper functioning.
Technological scheme of the present invention:
The technological scheme that technical solution problem of the present invention is adopted is seen Fig. 1, shown in Figure 2.Adopt and the essentially identical shape and size of using now of multiple spot electric injection device; In a metal shell (1) the inside two electromagnetic coils (2) and (4) are up and down arranged; Two removable electromagnetic valve cores (6) and (7) up and down, two Motionless electromagnetic cores (6A) and (7A), two Returnning springs (3) and (5) up and down up and down; A bottom fuel outlet atomising device (10) and a gas outlet (11); The circuit interface (8) of coil working up and down, top fuel oil, fuel gas inlet (9) or independently top fuel inlet (9) and fuel gas inlet (12) respectively will be carried out the Sealing (13) of proper functioning in addition; In fact fuel filter compositions such as (14) is exactly to have adorned two solenoid valves in the electric injection device to control the dual-fuel supply.
Realization and technical characteristics for the double fuel EFI device that the ignition mechanism motor is arranged:
Shown in accompanying drawing 1, this installs interior two solenoid valves is exactly to play control fuel oil and combustion gas opening and closing effect respectively, and last solenoid valve is realized the switch of fuel oil, and following solenoid valve is realized the switch of combustion gas.For the motor that ignition mechanism is arranged, only need a kind of fuel just can work, fuel oil and combustion gas can be used separately.When using fuel oil; Fuel oil gets into from upper inlet (9), gets into valve body through filter (14) back, arrives the bottom again; At this moment to after last electromagnetic coil (2) energising; Go up removable electromagnetic valve core (7) and open the fuel oil valve, fuel oil gets in the engine piston from atomising device (10) ejection, realizes the supply of fuel oil.When using combustion gas, combustion gas also gets into from same upper inlet (9), gets in the valve body through filter (14) back; Arrive the bottom again; At this moment to after electromagnetic coil (4) is switched on down, following removable electromagnetic valve core (6) is opened gas valve, and combustion gas gets in the engine piston from gas outlet (11) ejection.It is respectively through the work of coil electricity up and down that supply is exchanged in fuel oil and combustion gas, opens two different valves and has just realized the dual-fuel supply.Because fuel oil gets into motor and will atomize to fuel oil, so fuel oil must be atomising device (10) ejection from the centre, combustion gas does not need atomizing, then is from peripheral gas outlet (11) ejection of atomising device.
Realization and technical characteristics for the compression-ignition engine double fuel EFI device that does not have ignition mechanism:
Shown in accompanying drawing 2, for compression ignite class motor, it is to carry out compression ignite by the compression fuel oil; Do not have ignition mechanism, and combustion gas can not compression ignite, in the time of making compression ignite class motor use the such clean energy resource of combustion gas to act as a fuel; Will supply with according to a certain percentage with fuel oil and two kinds of fuel of combustion gas; Motor elder generation compression ignite fuel oil, fuel oil refires combustion gas, makes the motor proper functioning.Satisfy compression ignite class motor and carry out the double fuel supply, the double fuel electric injection device that will use fuel oil and combustion gas independently to supply with is respectively supplied with, and this device is identical with the said apparatus principle; Structure is also basic identical; Just fuel oil and combustion gas are independent respectively the supplies, and fuel oil is to get into from upper inlet (9), gets in the valve body through filter (14) back; Arrive the bottom again; After last electromagnetic coil (2) energising, go up removable electromagnetic valve core (7) and open, fuel oil gets in the engine piston from atomising device (10) ejection; And combustion gas is to get into from fuel gas inlet (12); Get in the valve body to the bottom through filter (14) back; After following electromagnetic coil (4) energising, following removable electromagnetic valve core (6) is opened, and combustion gas gets in the engine piston from gas outlet (11) ejection; The supply ratio of these two kinds of fuel is to lean on the outer circuit of two coil interfaces (8) to control; The length of two coil electrify times just can realize that control valve opens the length of time, reaches the control of the scale of fuel oil and fuel gas supply, to satisfy the normal need of engine operation.
Specific embodiment of the present invention (1)
Embodiments of the invention (1) are as shown in Figure 1, and this device is an employed multiple spot BBG double fuel EFI device on the automobile of gasoline class, his size and shape and existing basic identical, and it can carry out conversion and control to fuel oil and combustion gas.When using gasoline; Gasoline gets into from upper inlet (9), and in electric injection device, the fuel feeding pulse signal that automobile ECU sends is through electromagnetic coil circuit interface (8) through filter (14) back; Last coil (2) is controlled; Make solenoid valve work, control gasoline from atomising device (10) ejection, make the motor proper functioning through the opening and closing of last removable electromagnetic valve core (7); Combustion gas gets into from upper inlet (9) when using combustion gas; Back in electric injection device through filter (14); The gas supply pulse signal that automobile ECU sends is controlled lower coil (4) through electromagnetic coil circuit interface (8), makes down solenoid valve work; Control combustion gas through the opening and closing of following removable electromagnetic valve core (6) and be ejected in the engine piston, make the motor proper functioning from gas outlet (11).This embodiment's conversion is through the ECU control transformation of automobile, and gas supply is the solenoid valve work of going up, and the supply of combustion gas is solenoid valve work down.Last solenoid valve work, following solenoid valve is not just worked following solenoid valve work; Last solenoid valve is not just worked; Thereby realize the dual-fuel supply, this mode has only a solenoid valve in work, and its fuel oil and combustion gas all are to get into from upper inlet (9); Fuel oil is atomising device (10) ejection from lower central, and combustion gas is the peripheral gas outlet of atomising device (10) (11) ejection from the bottom.
Specific embodiment of the present invention (2)
Embodiments of the invention (2) are as shown in Figure 3, and this device is an employed multiple spot BBG double fuel EFI device on the automobile of gasoline class, his size and shape and existing basic identical, and it can carry out conversion and control to fuel oil and combustion gas.When using gasoline; Gasoline gets into from import (9), and in electric injection device, the fuel feeding pulse signal that automobile ECU sends is through electromagnetic coil circuit interface (8) through filter (14) back; Last coil (2) is controlled; Make solenoid valve work, control gasoline from atomising device (10) ejection, make the motor proper functioning through the opening and closing of last mobile electromagnetic valve core (7); Combustion gas gets into from import (9) when using combustion gas; In electric injection device, at this moment automobile ECU sends the gas supply pulse signal through electromagnetic coil circuit interface (8), still last coil (2) is controlled through filter (14) back; Make solenoid valve work; Control opening and turn-offing of combustion gas through the opening and closing of last removable electromagnetic valve core (7), and the control of gas outlet (11) then is that automobile ECU is when sending the air feed pulse; Also to send an air feed high level signal and control lower coil (4) work; Make down solenoid valve be in the energising working state all the time, make down removable electromagnetic valve core (6) be in the state of opening all the time, combustion gas could spray from gas outlet (11).This embodiment's the fuel oil and the conversion of combustion gas are to change through the switch of solenoid valve under the ECU control of automobile, that is to say; Go up solenoid valve work when using fuel oil; Following solenoid valve is not worked, and when using combustion gas, last solenoid valve is still worked; At present solenoid valve also will be worked always together, and combustion gas could spray from gas outlet (11).This embodiment and embodiment's (1) difference is on the structure of following removable electromagnetic valve core (6); Thereby brought solenoid valve work different; The effect of following solenoid valve is to play the change gas outlet; Two kinds of implementation results are the same, and fuel oil remains from atomising device (10) ejection, and combustion gas also is from peripheral gas outlet (11) ejection of atomising device.
Specific embodiment of the present invention (3)
Embodiments of the invention (3) are as shown in Figure 2; This device is the multiple spot BBG double fuel EFI device that on the diesel oil type motor, uses; His size and shape and existing basic identical; This device carries out fuel feeding and air feed simultaneously to diesel oil and combustion gas, and diesel oil and combustion gas are independently to supply with respectively, and the ratio of diesel oil and combustion gas is the diesel oil and different realization of combustion gas switch off time in one-period that sends through Engine ECU.Promptly through lower coil (2) and (4) switch off time length in electromagnetic coil circuit interface (8) control, the asynchronism(-nization) that electromagnetic valve core is opened reaches the ratio of controlling diesel oil and combustion gas.Diesel oil is to get into from upper inlet (9), gets in the EFI device through filter (14) back, arrives the bottom again, after last electromagnetic coil (2) energising, goes up removable electromagnetic valve core (7) and opens, and diesel oil gets in the engine piston from atomising device (10) ejection; And combustion gas is to get into from fuel gas inlet (12); Get in the EFI device to the bottom through filter (14) back; After following electromagnetic coil (4) energising, following removable electromagnetic valve core (6) is opened, and combustion gas gets in the engine piston from gas outlet (11) ejection; In fuel oil and the combustion gas while spirt piston, make the motor proper functioning.This embodiment can find out that also fuel oil and fuel gas inlet are respectively independently, but the outlet of fuel oil and combustion gas remains fuel oil from atomising device (10) ejection, and combustion gas is from peripheral gas outlet (11) ejection of atomising device (10).
Effect of the present invention and advantage
The function and the working method of EFI reciprocating engine oil gas double fuel EFI device product of the present invention are that the repacking of present dual-fuel automobile has realized not having revolutionary meaning, and the positive realistic meanings of ten minutes also arranged.After using this device, can carry out the repacking that double fuel is supplied with very easily to piston type multiple spot BBG.To repack dual-fuel automobile into to existing automobile; Make repacking become easily simple; Only need change the EFI device of former car into EFI double fuel EFI device of the present invention, add an oil-gas change-over switch again and just can realize the dual-fuel supply, no longer motor installed additional and changed.
Description of drawings
Fig. 1: the longitudinal section schematic diagram of structure that ignition mechanism BBG oil gas double fuel EFI device and specific embodiment (1) are arranged
Fig. 2: the longitudinal section schematic diagram of structure that does not have ignition mechanism compression-ignition engine oil gas double fuel EFI device and specific embodiment (3)
Fig. 3: the longitudinal section schematic diagram of structure of specific embodiment (2).
Claims (2)
1. a reciprocating engine oil gas double fuel EFI device has two electromagnetic coils, two removable electromagnetic valve cores up and down up and down a metal shell the inside; Two Motionless electromagnetic cores up and down; Two Returnning springs up and down, a bottom fuel outlet atomising device and a gas outlet, the circuit interface of coil working up and down around atomising device; A top fuel inlet; Also have the Sealing and the fuel filter of proper functioning, it is characterized by: fuel oil or combustion gas are used separately, and this top fuel inlet is the import of fuel oil or combustion gas; Top fuel inlet and fuel filter are connected with last Motionless electromagnetic core and last electromagnetic coil, and the removable electromagnetic valve core of going up is arranged in the last electromagnetic coil, are provided with upper reset spring between last Motionless electromagnetic core and the last removable electromagnetic valve core; Electromagnetic coil was arranged at the electromagnetic coil bottom under following Motionless electromagnetic core reached, and removable electromagnetic valve core is down arranged in the following electromagnetic coil, and following Returnning spring is being connected with following electromagnetic coil lower end outside the removable electromagnetic valve core down; The lower end of two removable electromagnetic valve cores is connected with atomising device up and down, and going up removable electromagnetic valve core is fuel tap, and following removable electromagnetic valve core is a burnt gas switch, and combustion gas is from the peripheral ejection of atomising device; When using fuel oil, fuel oil gets into from upper inlet, through getting into valve body behind the filter; Arrive the bottom again, at this moment, go up removable electromagnetic valve core and open the fuel oil valve after the last electromagnetic coil energising; Fuel oil gets in the engine piston from the atomising device ejection of centre, realizes the supply of fuel oil; When using combustion gas, combustion gas also gets into from upper inlet, through getting into behind the filter in the valve body; Arrive the bottom again; At this moment to after electromagnetic coil is switched on down, following removable electromagnetic valve core is opened gas valve, and combustion gas gets in the engine piston from the peripheral gas outlet ejection of atomising device.
2. a reciprocating engine oil gas double fuel EFI device has two electromagnetic coils, two removable electromagnetic valve cores up and down up and down a metal shell the inside; Two Motionless electromagnetic cores up and down, two Returnning springs up and down, a bottom fuel outlet atomising device and a gas outlet around atomising device; The circuit interface of coil working about in the of one; Two independently imports of difference also have the Sealing and the fuel filter of proper functioning, and fuel filter comprises fuel oil filter and gas filter; It is characterized by: fuel oil and combustion gas are used simultaneously; Two respectively independently the import middle and upper part be fuel inlet, be fuel gas inlet between the power-on and power-off magnetic coil, fuel oil and combustion gas be the outlet separately that is routed to the bottom through separately respectively; Fuel inlet and fuel oil filter are connected with last Motionless electromagnetic core and last electromagnetic coil, and the removable electromagnetic valve core of going up is arranged in the last electromagnetic coil, are provided with upper reset spring between last Motionless electromagnetic core and the last removable electromagnetic valve core; Electromagnetic coil was arranged at the electromagnetic coil bottom under following Motionless electromagnetic core reached, and removable electromagnetic valve core is down arranged in the following electromagnetic coil, and following Returnning spring is being connected with following electromagnetic coil lower end outside the removable electromagnetic valve core down; The lower end of two removable electromagnetic valve cores is connected with atomising device up and down, and going up removable electromagnetic valve core is fuel tap, and following removable electromagnetic valve core is a burnt gas switch, realizes that two kinds of fuel open and close simultaneously or separately, and combustion gas is from the peripheral ejection of atomising device; Fuel oil is that fuel inlet gets into from top, through getting in the EFI device behind the fuel oil filter, arrives the bottom again, after the last electromagnetic coil energising, goes up removable electromagnetic valve core and opens, and fuel oil gets in the engine piston from the atomising device ejection; Combustion gas is to get into from fuel gas inlet, arrives the bottom in the EFI device through getting into behind the gas filter, and after the following electromagnetic coil energising, following removable electromagnetic valve core is opened, and combustion gas gets in the engine piston from the gas outlet ejection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010028037 CN102116222B (en) | 2010-01-06 | 2010-01-06 | Oil-gas electronic injector of electronic injection piston-type engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010028037 CN102116222B (en) | 2010-01-06 | 2010-01-06 | Oil-gas electronic injector of electronic injection piston-type engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102116222A CN102116222A (en) | 2011-07-06 |
| CN102116222B true CN102116222B (en) | 2012-12-05 |
Family
ID=44215126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010028037 Expired - Fee Related CN102116222B (en) | 2010-01-06 | 2010-01-06 | Oil-gas electronic injector of electronic injection piston-type engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102116222B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368853B (en) * | 2016-11-01 | 2018-01-30 | 重庆大江动力设备制造有限公司 | Carburetor and its fuel-firing gas-firing switching mechanism |
| CN114483397B (en) * | 2021-12-29 | 2023-03-24 | 潍柴动力股份有限公司 | Dual-fuel injection device and dual-fuel engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856713A (en) * | 1988-08-04 | 1989-08-15 | Energy Conservation Innovations, Inc. | Dual-fuel injector |
| EP0546985A1 (en) * | 1991-12-10 | 1993-06-16 | New Sulzer Diesel Ag | Fuel injection valve for a reciprocating internal combustion engine optionally operating on diesel oil or on a gaseous fuel |
| CN1401053A (en) * | 2000-02-11 | 2003-03-05 | 韦斯特波特研究公司 | Method and apparatus for dual fuel injection into an internal combustion engine |
| US6732959B2 (en) * | 2002-09-04 | 2004-05-11 | Delphi Technologies, Inc. | Dual-coil outwardly-opening fuel injector |
| CN1589369A (en) * | 2001-11-20 | 2005-03-02 | 韦斯特波特研究公司 | Dual fuel injection valve and method of operating a dual fuel injection valve |
| CN201679581U (en) * | 2010-01-06 | 2010-12-22 | *** | Oil gas dual-fuel electric sprayer for electric spraying piston type engine |
-
2010
- 2010-01-06 CN CN 201010028037 patent/CN102116222B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856713A (en) * | 1988-08-04 | 1989-08-15 | Energy Conservation Innovations, Inc. | Dual-fuel injector |
| EP0546985A1 (en) * | 1991-12-10 | 1993-06-16 | New Sulzer Diesel Ag | Fuel injection valve for a reciprocating internal combustion engine optionally operating on diesel oil or on a gaseous fuel |
| CN1401053A (en) * | 2000-02-11 | 2003-03-05 | 韦斯特波特研究公司 | Method and apparatus for dual fuel injection into an internal combustion engine |
| CN1589369A (en) * | 2001-11-20 | 2005-03-02 | 韦斯特波特研究公司 | Dual fuel injection valve and method of operating a dual fuel injection valve |
| US6732959B2 (en) * | 2002-09-04 | 2004-05-11 | Delphi Technologies, Inc. | Dual-coil outwardly-opening fuel injector |
| CN201679581U (en) * | 2010-01-06 | 2010-12-22 | *** | Oil gas dual-fuel electric sprayer for electric spraying piston type engine |
Non-Patent Citations (1)
| Title |
|---|
| JP昭62-121854A 1987.06.03 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102116222A (en) | 2011-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201679581U (en) | Oil gas dual-fuel electric sprayer for electric spraying piston type engine | |
| CN102705120A (en) | Dual-fuel electric control monomer ejector | |
| CN102003317B (en) | Gasoline direct spray oil sprayer | |
| CN104136749B (en) | Double-fuel diesel engine | |
| CN103890346A (en) | Multi-fuel delivery system | |
| CN208950706U (en) | A kind of two-stroke Double-cylinder piston type heavy oil aero-engine | |
| CN102817756A (en) | Gasoline direct injection fuel injection pump | |
| CN102116222B (en) | Oil-gas electronic injector of electronic injection piston-type engine | |
| CN202718789U (en) | Dual-fuel electric-controlled single injector | |
| CN104870783A (en) | Fuel system retrofit kit for an engine | |
| CN202937390U (en) | Electromagnetic actuator for gasoline direct injection oil atomizer | |
| CN104343593A (en) | Gas inlet device of gas fuel engines and fuel gas injection control method | |
| CN201696151U (en) | Fuel supply device of dual-fuel engine | |
| CN213807910U (en) | Single-nozzle dual-fuel cold start device of methanol engine | |
| CN101713356B (en) | Vehicle ultrasonic fuel atomization device | |
| CN201582014U (en) | Automobile ultrasonic fuel-oil atomization device | |
| CN105927398B (en) | A kind of in-cylinder direct-jet gasoline and natural gas hybrid fuel system and control method | |
| CN102235284A (en) | Scavenging air duct spraying device of double-stroke kerosene engine | |
| CN102758713B (en) | Electrically controlled dual-fuel injector assembly and method of work thereof | |
| CN201851245U (en) | Gasoline direct injection (GDI) injector | |
| CN101666271A (en) | Intelligent spraying system and spraying method | |
| CN101936244A (en) | Internal combustion engine high pressure fuel system | |
| CN204783291U (en) | Automobile gasoline, two fuel supply system of natural gas | |
| CN106958501B (en) | A kind of biliquid direct-injection nozzle | |
| CN201826976U (en) | High-frequency compressed natural gas and liquefied petroleum gas sprayer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20220106 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |