CN105422345B - A kind of dual fuel injector device - Google Patents
A kind of dual fuel injector device Download PDFInfo
- Publication number
- CN105422345B CN105422345B CN201510926660.7A CN201510926660A CN105422345B CN 105422345 B CN105422345 B CN 105422345B CN 201510926660 A CN201510926660 A CN 201510926660A CN 105422345 B CN105422345 B CN 105422345B
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- Prior art keywords
- fuel
- valve pocket
- needle valves
- plunger
- pressure
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Classifications
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention provides a kind of dual fuel injector device, it is to be integrated in overall structure to reduce double fuel supply part by two kinds of fuel injection systems, including the injector body structure being fixedly connected sequentially by upper structure, intermediate and lower structures, in addition to main spring, A fuel plunger, auxiliary spring, A fuel needle valves and B fuel needle valves；The side of the intermediate is provided with A fuel secondary import, the main import of A fuel and B fuel inlets.The present invention realizes internal combustion engine class power set while using variety classes fuel combustion, reduce influence of the fuel supply to air coefficient of charge, two kinds of different fuels can be effectively controlled to enter in combustion chambers of internal combustion engines the quality for participating in burner's matter, to meet internal combustion engine to performance characteristics requirement.
Description
Technical field
The invention belongs to fuel supply system for internal combustion engine technical field, more particularly, to a kind of dual fuel injector device.
Background technology
Single-fuel is used in general internal combustion engine working process, under increasingly serious environment and energy problem's pressure, is used
Double fuel or multi fuel can obtain more preferable economy, dynamic property requirement as combustion in IC engine medium, while can meet more
Plus strict Abgasgesetz.Single fuel supply is divided into supply mode in low-pressure fuel injection and the class of high-pressure injection two, its middle cylinder in cylinder
Low-pressure fuel injection formula is used primarily on the low spark ignition type engine fuel of compression ratio, and high-pressure injection supply mode is used primarily in compression ratio
On high and compression terminal injection engine fuel, for big-block engine and high speed engine, often reached using high-pressure injection
To higher fuel feed and the shorter supply time for spraying of continuity.
In the prior art, the mixing supplied more than the fuel feed system for the dual fuel engine developed using gas handling system
Device supplies form, directly affects engine aspirating system air coefficient of charge, and restriction combustion in IC engine performance is improved, internal combustion engine combustion
Material consumption is big, discharge many.
The content of the invention
In view of this, the present invention is directed to propose a kind of dual fuel injector device, is being used with meeting bi-fuel internal combustion engine
In-cylinder direct-jet technology is realized in variety classes Fuel Process.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of dual fuel injector device, including be fixedly connected sequentially by upper structure, intermediate and lower structures
Injector body structure, in addition to main spring, A fuel plunger, auxiliary spring, A fuel needle valves and B fuel needle valves；
Inner chamber one is provided with the substructure body, the bottom pyramidal part side of lower structures is provided with some and inner chamber
The B fuel jet orifices of one connection, conical section end is provided with A fuel jet orifices；The B fuel needle valves are set under A fuel needle valves
Portion, is provided with B fuel pressure chambers between the madial wall and B fuel needle valves of the inner chamber one；
The middle part of the intermediate, which is provided with inner chamber two, the inner chamber two, sets main spring, A fuel plunger, auxiliary spring and A
Fuel needle valve, main spring is arranged on A fuel plunger upper parts, and auxiliary spring is arranged in A fuel plungers, and the top of A fuel needle valves is set
Put in A fuel plunger inner support auxiliary springs；A fuel is formed between the bottom surface of the upper structure and A fuel plunger top surfaces low
Pressure pressure chamber, forms A fuel high pressure pressure chambers between the A fuel plunger bottom and the top of B fuel needle valves；
The side of the intermediate is provided with the secondary import of the A fuel connected with A fuel low pressure chambers and A fuel plungers
The main import of A fuel of space connection at where auxiliary spring；The side of the intermediate is communicated with the B fuel of B fuel pressure chambers
Import；
It is provided with the superstructure body in valve pocket one and valve pocket two, the valve pocket one and valve pocket two and is respectively mounted A fuel
The secondary relief valve of main relief valve and A fuel, the valve pocket one and valve pocket two are communicated at upper structure top and are respectively equipped with A fuel
Main relief hole 11 and A fuel pair relief hole 12；The bottom communication with cavity two of valve pocket two, the bottom connection A combustions of the valve pocket one
Expect the path where main inlet communication auxiliary spring.
Further, the valve pocket two is arranged in superstructure body at central axis, and the valve pocket one is arranged on top
The sidepiece of structure.
Further, the pointed portion of the B fuel needle valves is furnished with some spray-holes.
Further, the A fuel plunger member is provided with balance A fuel low pressure chambers and A fuel high pressure pressure chambers
Pressure balanced damping hole.
Relative to prior art, the present invention has the advantage that：
(1) dual fuel injection integrated double fuel supply system in former single-fuel injector pilot fuel device structure in cylinder, fuel directly sprays
Inject into combustion chamber, reduce influence of the fuel supply to air coefficient of charge, can effectively control two kinds of different fuels to enter interior
The quality of burner's matter is participated in combustion engine combustion chamber；Engine is improved by air demand and the optimized mix-proportion regulation of progress double fuel
Efficiency of combustion, so as to be effectively improved automotive fuel consumption, emission problem；Internal combustion engine class power set are realized while using different
Species fuel combustion, rationally controls each fuel injection amount and time for spraying to meet internal combustion engine to performance characteristics requirement；
(2) reasonable in design, it is simple easily to realize, easily promote the use of.
Brief description of the drawings
The accompanying drawing for constituting the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of dual fuel injector device described in the embodiment of the present invention.
Description of reference numerals：
The main relief valve of 1-A fuel, 2-A fuel pair relief valve, 3- upper structures, 4- main springs, 5- intermediates, 6-A combustions
Stock column plug, 7- auxiliary springs, 8-A fuel needle valves, 9-B fuel needle valves, 10- lower structures, the main relief hole of 11-A fuel, 12-A combustions
Expect pair relief hole, 13-A fuel low pressure chambers, 14-A fuel high pressure pressure chambers, 15-B fuel pressure chambers, 16-A fuel masters enter
Mouthful, the pair import of 17-A fuel, 18-B fuel inlets, 19-A fuel jet orifices, 20-B fuel jet orifices.
Embodiment
It should be noted that in the case where not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Mutually combination.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
A kind of dual fuel injector device, as shown in figure 1, including by upper structure 3, intermediate 5 and lower structures
The 10 injector body structures being fixedly connected sequentially, in addition to main spring 4, A fuel plunger 6, auxiliary spring 7, A fuel needle valves 8 and B
Fuel needle valve 9；
Be provided with inner chamber one in the lower structures 10, the bottom pyramidal part sides of lower structures 10 provided with it is some with
The B fuel jet orifices 20 that inner chamber one is connected, conical section end is provided with A fuel jet orifices 19；The B fuel needle valves 9 are set in A fuel
The bottom of needle-valve 8, forms the A fuel channels that A fuel leads to A fuel jet orifices 19 between B fuel needle valves 9 and A fuel needle valves 8；Institute
State and B fuel pressures chamber 15 is provided between the madial wall of inner chamber one and B fuel needle valves 9；
The middle part of the intermediate 5, which is provided with inner chamber two, the inner chamber two, sets main spring 4, A fuel plunger 6, auxiliary spring
7 and A fuel needle valves 8, main spring 4 is arranged on the top of A fuel plunger 6, and auxiliary spring 7 is arranged in A fuel plunger 6, A fuel needle valves
8 top is arranged on the inner support auxiliary spring 7 of A fuel plunger 6；The bottom surface of the upper structure 3 and the top surface of A fuel plunger 6 it
Between form A fuel low pressures chamber 13, A fuel high pressures are formed between the bottom of A fuel plunger 6 and the top of B fuel needle valves 9
Pressure chamber 14；
The side of the intermediate 5 is provided with the secondary import 17 of the A fuel connected with A fuel low pressures chamber 13 and A fuel columns
The main import 16 of A fuel that space is connected at the place of auxiliary spring 7 in plug 6, the connection of the A fuel low pressure chamber 13 A fuel pairs are entered
The effect of mouth 17 is the pressure for controlling A fuel in the A fuel low pressures chamber 13 of the intermediate 5；The side of the intermediate 5
It is communicated with the B fuel inlets 18 of B fuel pressures chamber 15；
It is provided with the upper structure 3 in valve pocket one and valve pocket two, the valve pocket one and valve pocket two and is respectively mounted A fuel
The secondary relief valve 2 of main relief valve 1 and A fuel, the valve pocket one and valve pocket two are communicated at the top of upper structure 3 and are respectively equipped with A
The main relief hole 11 of fuel and A fuel pair relief hole 12；The bottom communication with cavity two of valve pocket two, the bottom connection of the valve pocket one
Path where the main connection of import 16 auxiliary spring 7 of A fuel, it is pressure in control A fuel normal fuel systems that it, which is acted on,.
The valve pocket two is arranged in upper structure 3 at central axis, and the valve pocket one is arranged on upper structure 3
Sidepiece.
The pressure of the A fuel plunger 6 provided with balance A fuel low pressures chamber 13 and A fuel high pressures pressure chamber 14
The damping hole of balance.
The main import 16 of A fuel, the secondary import 17 of A fuel and B fuel inlets 18 as the extra quality outside service ducts of A/B,
The pointed portion of B fuel needle valves 9 is furnished with some spray-holes, realizes that fuel injection enters combustion chamber.
The dual fuel injection control method of the dual fuel injector device is as follows：
1) two kinds of character different fuels of A, B are supplied according to different quantity delivereds in fuel feed system；
2) A, B fuel enter injector by respective passage respectively, A fuel low pressure chamber 13 and A during off working state
The pressure of fuel high pressure pressure chamber 14 is identical, while keeping two under the damping hole adjustment effect of the design of the A fuel plunger 6
Individual pressure chamber pressure balance；B fuel is stored in the B fuel pressures chamber 15 and its pressure is slightly larger than A fuel low pressures chamber 13
With A fuel high pressures pressure chamber 14；
3) A fuel injections implementation is：The main relief valve 1 of A fuel and the secondary relief valve 2 of A fuel are closed simultaneously,
A fuel is inputted into the main import 16 of A fuel and the secondary import 17 of A fuel by external high pressure feed system, at the tip of A fuel needle valves 8
Position forms high-pressure forces and overcome after the active force of auxiliary spring 7, and A fuel needle valves 8 are opened, and A fuel passes through A fuel orifices
Burning is participated in into combustion chambers of internal combustion engines；
4) B fuel injections implementation is：External high pressure feed system inputs B fuel after B fuel inlets 18, in B combustions
High-pressure is formed in material pressure chamber 15 and is overcome after the effect of main spring 4, makes B fuel needle valves 9 and A fuel plunger 6, secondary bullet
Spring 7, A fuel needle valves 8 are opened simultaneously；B fuel is entered in combustion chambers of internal combustion engines by B fuel jet orifices 20 to be participated in burning；
The external fuel feed system of the fuel can be any one raising fuel pressure device, and its control mode can
Think mechanical or electric-controlled type and other modes.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (4)
1. a kind of dual fuel injector device, it is characterised in that：Including by upper structure, intermediate and lower structures successively
The injector body structure being fixedly connected, in addition to main spring, A fuel plunger, auxiliary spring, A fuel needle valves and B fuel needle valves；
Inner chamber one is provided with the substructure body, the bottom pyramidal part side of lower structures connects provided with some with inner chamber one
Logical B fuel jet orifices, conical section end is provided with A fuel jet orifices；The B fuel needle valves are set in the bottom of A fuel needle valves, institute
State and B fuel pressure chambers are provided between the madial wall of inner chamber one and B fuel needle valves；
The middle part of the intermediate, which is provided with inner chamber two, the inner chamber two, sets main spring, A fuel plunger, auxiliary spring and A fuel
Needle-valve, main spring is arranged on A fuel plunger upper parts, and auxiliary spring is arranged in A fuel plungers, and the top of A fuel needle valves is arranged on A
Fuel plunger inner support auxiliary spring；A fuel low pressures are formed between the bottom surface of the upper structure and A fuel plunger top surfaces
Chamber, forms A fuel high pressure pressure chambers between the A fuel plunger bottom and the top of B fuel needle valves；
The side of the intermediate is provided with secondary bullet in the secondary import of the A fuel connected with A fuel low pressure chambers and A fuel plungers
The main import of A fuel of space connection at where spring；The side of the intermediate is communicated with the B fuel inlets of B fuel pressure chambers；
A fuel masters are respectively mounted provided with valve pocket one and valve pocket two in the superstructure body, in the valve pocket one and valve pocket two to let out
The secondary relief valve of pressure valve and A fuel, the valve pocket one and valve pocket two be communicated at the top of upper structure at be respectively equipped with A fuel masters and let out
Press hole and A fuel pair relief holes；The bottom communication with cavity two of valve pocket two, the bottom connection main import of A fuel of the valve pocket one
Connect the path where auxiliary spring.
2. dual fuel injector device according to claim 1, it is characterised in that：The valve pocket two is arranged on superstructure
At internal central axis, the valve pocket one is arranged on the sidepiece of upper structure.
3. dual fuel injector device according to claim 1, it is characterised in that：The pointed portion of the B fuel needle valves
It is furnished with some spray-holes.
4. dual fuel injector device according to claim 1, it is characterised in that：The A fuel columns are beyond the Great Wall provided with balance A
The damping hole of the pressure of fuel low pressure chamber and A fuel high pressure pressure chambers.
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 CN105422345A (en) | 2016-03-23 |
| CN105422345B true CN105422345B (en) | 2017-09-15 |
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| 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 |
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| Country | Link |
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| CN (1) | CN105422345B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN111878276B (en) * | 2020-07-24 | 2021-09-14 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105422345A (en) | 2016-03-23 |
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