CN105422345A - Dual-fuel ejector device - Google Patents
Dual-fuel ejector device Download PDFInfo
- Publication number
- CN105422345A CN105422345A CN201510926660.7A CN201510926660A CN105422345A CN 105422345 A CN105422345 A CN 105422345A CN 201510926660 A CN201510926660 A CN 201510926660A CN 105422345 A CN105422345 A CN 105422345A
- Authority
- CN
- China
- Prior art keywords
- fuel
- needle valve
- plunger
- valve pocket
- dual
- 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
Links
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
- F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
- F02M43/04—Injectors peculiar thereto
-
- 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/06—Other fuel injectors peculiar thereto
-
- 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
- F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
- F02M2547/006—Springs assisting hydraulic closing force
Abstract
The invention provides a dual-fuel ejector device. Two fuel ejecting systems are integrated into an integral structure, so as to decrease dual-fuel supply parts. The dual-fuel ejector device comprises an ejector main body structure which is formed through fixedly connecting an upper structure body, a middle body and a lower structure body in sequence, as well as a main spring, an A fuel plunger, a sub spring, an A fuel needle valve and a B fuel needle valve, wherein an A fuel sub inlet, an A fuel main inlet and a B fuel inlet are formed in the side surface of the middle body. According to the dual-fuel ejector device, an internal combustion engine power device adopts fuels of different types for combustion, so that the influence of fuel supply to the air volumetric efficiency is reduced, two different fuels can be effectively controlled to enter a combustion chamber of the internal combustion engine for participating in combustion, the quality of working mediums is guaranteed, and the requirement of the internal combustion engine on performances and characteristics is met.
Description
Technical field
The invention belongs to fuel supply system for internal combustion engine technical field, especially relate to a kind of dual fuel injection apparatus.
Background technique
Single-fuel is adopted in general internal combustion engine working process, under increasingly serious environment and energy problem's pressure, adopt double fuel or multi fuel can obtain better Economy, power character requirement as combustion in IC engine medium, stricter Abgasgesetz can be met simultaneously.In cylinder, single fuel supply is divided into low-pressure fuel injection and high-pressure injection two class, wherein in cylinder, the low-pressure fuel injection formula of supply mode is mainly used on the low Spark ignition type engine fuel of compression ratio, it is high with on the engine fuel of compression terminal injection that high-pressure injection supply mode is mainly used in compression ratio, for big-block engine and high speed engine, high-pressure injection is often adopted to reach higher fuel feed and continue shorter supply time for spraying.
In prior art, the mixer air feed form of fuel supply system many employings gas handling system air feed of the duel fuel engine developed, directly affect engine aspirating system air charge coefficient, restriction combustion in IC engine performance improves, and motor fuel consumption is large, discharge is many.
Summary of the invention
In view of this, the present invention is intended to propose a kind of dual fuel injection apparatus, realizes in-cylinder direct injection technology to meet bi-fuel internal combustion engine in employing variety classes Fuel Process.
For achieving the above object, technological scheme of the present invention is achieved in that
A kind of dual fuel injection apparatus, comprises the injector body structure be fixedly connected sequentially by upper structure, intermediate and lower structures, also comprises main spring, A fuel plunger, auxiliary spring, A fuel needle valve and B fuel needle valve;
Be provided with inner chamber one in described lower structures, the bottom pyramidal part side of lower structures is provided with some B fuel jet orifices be communicated with inner chamber one, and conical section end is provided with A fuel jet orifice; Described B fuel needle valve is set in the bottom of A fuel needle valve, is provided with B fuel pressure chamber between the madial wall of described inner chamber one and B fuel needle valve;
The middle part of described intermediate is provided with inner chamber two, main spring, A fuel plunger, auxiliary spring and A fuel needle valve are set in described inner chamber two, main spring is arranged on A fuel plunger upper part, and auxiliary spring is arranged in A fuel plunger, and the top of A fuel needle valve is arranged on A fuel plunger inner support auxiliary spring; Form A fuel low pressure chamber between the bottom surface of described upper structure and A fuel plunger end face, between described A fuel plunger bottom and the top of B fuel needle valve, form A fuel high pressure pressure chamber;
The side of described intermediate is provided with the main import of A fuel that the secondary import of the A fuel be communicated with A fuel low pressure chamber is communicated with space, place, auxiliary spring place in A fuel plunger; The side of described intermediate is provided with the B fuel inlet being communicated with B fuel pressure chamber;
Valve pocket one and valve pocket two is provided with in described upper structure, install the main Decompression valves of A fuel and the secondary Decompression valves of A fuel respectively in described valve pocket one and valve pocket two, described valve pocket one and valve pocket two are communicated to upper structure top place and are respectively equipped with the main relief hole 11 of A fuel and the secondary relief hole 12 of A fuel; Communication with cavity two bottom described valve pocket two, the bottom of described valve pocket one is communicated with the path at A fuel main inlet communication auxiliary spring place.
Further, described valve pocket two is arranged on central axis place in upper structure, and described valve pocket one is arranged on the sidepiece of upper structure.
Further, the pointed portion of described B fuel needle valve is furnished with some spray-holes.
Further, described A fuel column plug member is provided with the pressure balanced damping hole of balance A fuel low pressure chamber and A fuel high pressure pressure chamber.
Relative to prior art, the present invention has following advantage:
(1) dual fuel injection integrated double fuel supply system in former single-fuel injector pilot fuel device structure in cylinder, fuel is directly injected into into firing chamber, reduce the impact of fuel supply on air charge coefficient, effectively can control two kinds of different fuels and enter the quality participating in burner's matter in combustion chambers of internal combustion engines; By air demand and carry out double fuel optimized mix-proportion and regulate and improve engine combustion efficiency, thus effectively improve motor fuel consumption, emission problem; Realize internal-combustion engine class power plant and adopt variety classes fuel combustion simultaneously, each fuel injection amount of conservative control and time for spraying are to meet internal-combustion engine to performance characteristics requirement;
(2) reasonable in design, is simple and easy to realize, easily promotes the use of.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of dual fuel injection apparatus described in the embodiment of the present invention.
Description of reference numerals:
The main Decompression valves of 1-A fuel, the secondary Decompression valves of 2-A fuel, 3-upper structure, 4-main spring, 5-intermediate, 6-A fuel plunger, 7-auxiliary spring, 8-A fuel needle valve, 9-B fuel needle valve, 10-lower structures, the main relief hole of 11-A fuel, the secondary relief hole of 12-A fuel, 13-A fuel low pressure chamber, 14-A fuel high pressure pressure chamber, 15-B fuel pressure chamber, the main import of 16-A fuel, the secondary import of 17-A fuel, 18-B fuel inlet, 19-A fuel jet orifice, 20-B fuel jet orifice.
Embodiment
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
A kind of dual fuel injection apparatus, as shown in Figure 1, comprise the injector body structure be fixedly connected sequentially by upper structure 3, intermediate 5 and lower structures 10, also comprise main spring 4, A fuel plunger 6, auxiliary spring 7, A fuel needle valve 8 and B fuel needle valve 9;
Be provided with inner chamber one in described lower structures 10, the bottom pyramidal part side of lower structures 10 is provided with some B fuel jet orifices 20 be communicated with inner chamber one, and conical section end is provided with A fuel jet orifice 19; Described B fuel needle valve 9 is set in the bottom of A fuel needle valve 8, forms the A fuel channel that A fuel leads to A fuel jet orifice 19 between B fuel needle valve 9 and A fuel needle valve 8; B fuel pressure chamber 15 is provided with between the madial wall of described inner chamber one and B fuel needle valve 9;
The middle part of described intermediate 5 is provided with inner chamber two, main spring 4, A fuel plunger 6, auxiliary spring 7 and A fuel needle valve 8 are set in described inner chamber two, main spring 4 is arranged on A fuel plunger 6 top, auxiliary spring 7 is arranged in A fuel plunger 6, and the top of A fuel needle valve 8 is arranged on A fuel plunger 6 inner support auxiliary spring 7; Form A fuel low pressure chamber 13 between the bottom surface of described upper structure 3 and A fuel plunger 6 end face, between described A fuel plunger 6 bottom and the top of B fuel needle valve 9, form A fuel high pressure pressure chamber 14;
The side of described intermediate 5 is provided with the main import 16 of A fuel that the secondary import 17 of the A fuel be communicated with A fuel low pressure chamber 13 is communicated with space, place, auxiliary spring 7 place in A fuel plunger 6, and the effect that described A fuel low pressure chamber 13 is communicated with the secondary import 17 of A fuel is the pressure of control A fuel in the A fuel low pressure chamber 13 of described intermediate 5; The side of described intermediate 5 is provided with the B fuel inlet 18 being communicated with B fuel pressure chamber 15;
Valve pocket one and valve pocket two is provided with in described upper structure 3, install the main Decompression valves 1 of A fuel and the secondary Decompression valves 2 of A fuel respectively in described valve pocket one and valve pocket two, described valve pocket one and valve pocket two are communicated to upper structure 3 top place and are respectively equipped with the main relief hole 11 of A fuel and the secondary relief hole 12 of A fuel; Communication with cavity two bottom described valve pocket two, the bottom main import 16 of connection A fuel of described valve pocket one is communicated with the path at auxiliary spring 7 place, and its effect is pressure in control A fuel normal fuel system.
Described valve pocket two is arranged on central axis place in upper structure 3, and described valve pocket one is arranged on the sidepiece of upper structure 3.
Described A fuel plunger 6 is provided with the pressure balanced damping hole of balance A fuel low pressure chamber 13 and A fuel high pressure pressure chamber 14.
The main import of described A fuel 16, the secondary import 17 of A fuel and B fuel inlet 18 are as the extra quality outside service duct of A/B, and described B fuel needle valve 9 pointed portion is furnished with some spray-holes, realize fuel injection and enter firing chamber.
The dual fuel injection controlling method of described dual fuel injection apparatus is as follows:
1) A, B two kinds of proterties different fuels are had to supply according to different delivery volume in fuel supply system;
2) A, B fuel enters sparger respectively by respective passage, during off working state, A fuel low pressure chamber 13 is identical with the pressure of A fuel high pressure pressure chamber 14, keeps two pressure chamber pressure balances under the damping hole regulating action of the design of described A fuel plunger 6 simultaneously; Store B fuel in described B fuel pressure chamber 15 and its pressure slightly larger than A fuel low pressure chamber 13 and A fuel high pressure pressure chamber 14;
3) A fuel injection implementation is: the main Decompression valves 1 of A fuel and the secondary Decompression valves 2 of A fuel are in closed condition simultaneously, by external high pressure supply system, A fuel is inputted the main import 16 of A fuel and the secondary import 17 of A fuel, after the most advanced and sophisticated position formation high-pressure forces of A fuel needle valve 8 overcomes described auxiliary spring 7 active force, A fuel needle valve 8 is opened, and A fuel is entered in combustion chambers of internal combustion engines by A fuel orifice and participates in burning;
4) B fuel injection implementation is: external high pressure supply system is by after B fuel input B fuel inlet 18, in B fuel pressure chamber 15, form high-pressure and after overcoming the effect of described main spring 4, B fuel needle valve 9 and A fuel plunger 6, auxiliary spring 7, A fuel needle valve 8 are opened simultaneously; B fuel is entered in combustion chambers of internal combustion engines by B fuel jet orifice 20 and participates in burning;
The external fuel supply system of described fuel can be that any one improves fuel pressure device, and its control mode can be mechanical type or electric-controlled type and other modes.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a dual fuel injection apparatus, is characterized in that: comprise the injector body structure be fixedly connected sequentially by upper structure, intermediate and lower structures, also comprises main spring, A fuel plunger, auxiliary spring, A fuel needle valve and B fuel needle valve;
Be provided with inner chamber one in described lower structures, the bottom pyramidal part side of lower structures is provided with some B fuel jet orifices be communicated with inner chamber one, and conical section end is provided with A fuel jet orifice; Described B fuel needle valve is set in the bottom of A fuel needle valve, is provided with B fuel pressure chamber between the madial wall of described inner chamber one and B fuel needle valve;
The middle part of described intermediate is provided with inner chamber two, main spring, A fuel plunger, auxiliary spring and A fuel needle valve are set in described inner chamber two, main spring is arranged on A fuel plunger upper part, and auxiliary spring is arranged in A fuel plunger, and the top of A fuel needle valve is arranged on A fuel plunger inner support auxiliary spring; Form A fuel low pressure chamber between the bottom surface of described upper structure and A fuel plunger end face, between described A fuel plunger bottom and the top of B fuel needle valve, form A fuel high pressure pressure chamber;
The side of described intermediate is provided with the main import of A fuel that the secondary import of the A fuel be communicated with A fuel low pressure chamber is communicated with space, place, auxiliary spring place in A fuel plunger; The side of described intermediate is provided with the B fuel inlet being communicated with B fuel pressure chamber;
Valve pocket one and valve pocket two is provided with in described upper structure, install the main Decompression valves of A fuel and the secondary Decompression valves of A fuel respectively in described valve pocket one and valve pocket two, described valve pocket one and valve pocket two are communicated to upper structure top place and are respectively equipped with the main relief hole 11 of A fuel and the secondary relief hole 12 of A fuel; Communication with cavity two bottom described valve pocket two, the bottom of described valve pocket one is communicated with the path at A fuel main inlet communication auxiliary spring place.
2. dual fuel injection apparatus according to claim 1, is characterized in that: described valve pocket two is arranged on central axis place in upper structure, and described valve pocket one is arranged on the sidepiece of upper structure.
3. dual fuel injection apparatus according to claim 1, is characterized in that: the pointed portion of described B fuel needle valve is furnished with some spray-holes.
4. dual fuel injection apparatus according to claim 1, is characterized in that: described A fuel column plug member is provided with the pressure balanced damping hole of balance A fuel low pressure chamber and A fuel high pressure pressure chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510926660.7A CN105422345B (en) | 2015-12-11 | 2015-12-11 | A kind of dual fuel injector device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510926660.7A CN105422345B (en) | 2015-12-11 | 2015-12-11 | A kind of dual fuel injector device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105422345A true CN105422345A (en) | 2016-03-23 |
| CN105422345B CN105422345B (en) | 2017-09-15 |
Family
ID=55500810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510926660.7A Active CN105422345B (en) | 2015-12-11 | 2015-12-11 | A kind of dual fuel injector device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105422345B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812356A (en) * | 2018-12-19 | 2019-05-28 | 潍柴动力股份有限公司 | Dual fuel injection system and dual fuel engine with it |
| CN111535958A (en) * | 2020-05-29 | 2020-08-14 | 一汽解放汽车有限公司 | Dual-fuel injector and injection method thereof |
| CN111878276A (en) * | 2020-07-24 | 2020-11-03 | 一汽解放汽车有限公司 | Fuel injector and engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6073862A (en) * | 1998-09-16 | 2000-06-13 | Westport Research Inc. | Gaseous and liquid fuel injector |
| CN202718789U (en) * | 2012-06-19 | 2013-02-06 | 哈尔滨工程大学 | Dual-fuel electric-controlled single injector |
| CN103244321A (en) * | 2013-04-28 | 2013-08-14 | 哈尔滨工程大学 | Dual-fuel dual-piezoelectric control type injector |
-
2015
- 2015-12-11 CN CN201510926660.7A patent/CN105422345B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6073862A (en) * | 1998-09-16 | 2000-06-13 | Westport Research Inc. | Gaseous and liquid fuel injector |
| CN202718789U (en) * | 2012-06-19 | 2013-02-06 | 哈尔滨工程大学 | Dual-fuel electric-controlled single injector |
| CN103244321A (en) * | 2013-04-28 | 2013-08-14 | 哈尔滨工程大学 | Dual-fuel dual-piezoelectric control type injector |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812356A (en) * | 2018-12-19 | 2019-05-28 | 潍柴动力股份有限公司 | Dual fuel injection system and dual fuel engine with it |
| CN109812356B (en) * | 2018-12-19 | 2020-06-26 | 潍柴动力股份有限公司 | Dual-fuel injection system and dual-fuel engine with same |
| CN111535958A (en) * | 2020-05-29 | 2020-08-14 | 一汽解放汽车有限公司 | Dual-fuel injector and injection method thereof |
| CN111535958B (en) * | 2020-05-29 | 2021-07-13 | 一汽解放汽车有限公司 | Dual-fuel injector and injection method thereof |
| CN111878276A (en) * | 2020-07-24 | 2020-11-03 | 一汽解放汽车有限公司 | Fuel injector and engine |
| CN111878276B (en) * | 2020-07-24 | 2021-09-14 | 一汽解放汽车有限公司 | Fuel injector and engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105422345B (en) | 2017-09-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9803564B2 (en) | Dual-fuel fuel injector | |
| US9581119B2 (en) | Auxiliary chamber gas supplying device for gas engine | |
| CN105189967A (en) | Sub-chamber fuel supply device for gas internal combustion engine | |
| US20140331960A1 (en) | Flame jet ignition engine | |
| US7305968B2 (en) | Injection system for an internal-combustion engine | |
| EP1612405B1 (en) | An injection system for an internal-combustion engine | |
| EP2740915B1 (en) | Spark ignition engine | |
| CN105422345A (en) | Dual-fuel ejector device | |
| CN103180600B (en) | Fuel-injection valve for an internal combustion engine | |
| US20210164428A1 (en) | Fuel system for reducing fuel targeting errors and engine operating method | |
| CN204783409U (en) | Oil spraying device | |
| CN102933831B (en) | Pressure regulator | |
| CN104196664A (en) | Conical surface sealed high pressure common rail fuel injector controller | |
| CN101963119B (en) | Piezoelectric high-pressure common rail electronic control injector | |
| CN206299503U (en) | A kind of single-cylinder air-cooled diesel engine electrical control oil spray pump | |
| CN105756825B (en) | Combined electromagnetic oil spout is pressurized piezoelectricity jet hybrid fuel jet device | |
| CN108443040A (en) | Medium and heavy-duty engines monomer crosspointer valve twin-jet nozzle high pressure common rail injector | |
| CN114992669A (en) | Fuel nozzle with regulating valve and fuel supply mode | |
| CN103161633A (en) | High-pressure fuel feeding pump | |
| CN112081673A (en) | Dual-fuel injector | |
| CN105756829B (en) | Combined mechanical oil spout is pressurized piezoelectricity jet hybrid fuel jet device | |
| KR102034334B1 (en) | Fuel injection arrangement | |
| CN109184987A (en) | The variable pressure accumulation type heavy oil electric-controlled fuel injector of fuel injection characteristic | |
| CN109083786A (en) | The variable booster-type heavy oil piezoelectricity-electromagnetism bivalve electric-controlled fuel injector of fuel injection characteristic | |
| CN103603754B (en) | A kind of grouping cavate air inlet device altogether |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |