CN102434349A - Fuel injection system and aircraft engine with same - Google Patents
Fuel injection system and aircraft engine with same Download PDFInfo
- Publication number
- CN102434349A CN102434349A CN2011102938728A CN201110293872A CN102434349A CN 102434349 A CN102434349 A CN 102434349A CN 2011102938728 A CN2011102938728 A CN 2011102938728A CN 201110293872 A CN201110293872 A CN 201110293872A CN 102434349 A CN102434349 A CN 102434349A
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- Prior art keywords
- fuel
- oil
- injection system
- sparger
- fuel injection
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- 239000000446 fuel Substances 0.000 title claims abstract description 112
- 238000002347 injection Methods 0.000 title claims abstract description 32
- 239000007924 injection Substances 0.000 title claims abstract description 32
- 239000002828 fuel tank Substances 0.000 claims abstract description 16
- 239000010687 lubricating oil Substances 0.000 claims abstract description 11
- 239000000295 fuel oil Substances 0.000 claims description 98
- 239000003921 oil Substances 0.000 claims description 81
- 239000000945 filler Substances 0.000 claims description 18
- 239000007921 spray Substances 0.000 claims description 11
- 206010022000 influenza Diseases 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000000284 extract Substances 0.000 abstract 1
- 238000013021 overheating Methods 0.000 abstract 1
- 239000006200 vaporizer Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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- Fuel-Injection Apparatus (AREA)
Abstract
The present invention provides a fuel injection system comprising: the fuel pump (1) extracts fuel from a fuel tank (10) and conveys the fuel to the fuel control servo (3) and the fuel distributor (5); the two components regulate the fuel flow and evenly distribute the fuel to the fuel nozzle (7). The fuel injection system of the invention uses the fuel control servo and the fuel distributor, can freely adjust the flow of the fuel and evenly distribute the amount of the fuel flowing to each fuel nozzle, thereby ensuring even fuel supply to each cylinder and avoiding uneven temperature of each cylinder or overheating of a single cylinder; on the other hand, the air is heated and heated through the lubricating oil pool, so that the phenomenon of low-temperature icing at the fuel nozzle is avoided.
Description
Technical field
The present invention relates to engine art, especially, relate to a kind of fuel injection system.A kind of aeroengine that comprises this ejecting system also is provided.
Background technique
The oil-fired system of aviation piston engine adopts the carburetor-type fuel system usually.Referring to Fig. 1 and Tu `, in the carburetor-type oil supply system, comprise fuel pump 01 and vaporizer 02.Fuel pump 01 flows to fuel nozzle 04 after fuel oil is extracted out from oil sump, and air stream 05 is injected in the vaporizer 02, and trunnion 06 place and fuel vapor in vaporizer 02 are converged, and is sent in the motor 03 after fuel oil is dispelled atomizing.Concrete principle is: air stream is through trunnion 06 place of vaporizer 02; Produce negative pressure at trunnion 06 place; Fuel oil in vaporizer 02 oil pocket is mixed in vaporizer with air and the formation mixed gas that gasifies by the sucking-off fuel oil by sucking-off, and mixed gas gets into each cylinder through the suction tude of each cylinder of motor.Fuel oil is when vaporizer mixing chamber and air mixing; Because fuel evaporation, the temperature of air will reduce widely, makes airborne moisture content form white shape; And make on mixing locular wall and the closure icing; Thereby make the vaporizer cisco unity malfunction, influence flight safety, need increase air heating apparatus for this reason.Air and fuel oil mix the back getting into each cylinder in the vaporizer mixing chamber, can produce the mixed gas maldistribution, cause each cylinder non-uniform temperature, even it is overheated to produce single cylinder.
Summary of the invention
The object of the invention is to provide a kind of fuel injection system, with the uneven technical problem of each temperature cylinder that the vaporizer mixing chamber freezes easily, each cylinder causes because of the mixed gas maldistribution that solves available engine.
For realizing above-mentioned purpose, the invention provides a kind of fuel injection system, comprising: fuel pump, fuel oil control servomechanism, fuel oil sparger and a plurality of fuel nozzle, the oil inlet end of fuel pump is communicated with fuel tank; The filler opening of fuel oil control servomechanism is connected with the oil outlet end of fuel pump; The filler opening of fuel oil sparger is connected with the oil outlet of fuel oil control servomechanism; The fuel oil sparger has a plurality of oil outlets; A plurality of fuel nozzles are connected with a plurality of oil outlets of fuel oil sparger correspondingly, and in the pairing fuel nozzle of this each oil outlet, carry the fuel oil of equivalent by each oil outlet.
Further; The oil inlet end of fuel pump is communicated with fuel tank through first oil inlet pipe; The filler opening of fuel oil control servomechanism is connected with the oil outlet end of fuel pump through second oil inlet pipe; The filler opening of fuel oil sparger is connected through the oil outlet of oil outlet tube with fuel oil control servomechanism, and fuel nozzle is connected with the oil outlet of fuel oil sparger through spray bar; First oil inlet pipe, second oil inlet pipe and oil outlet tube are soft oil pipe; Spray bar is the hard oil pipe.
Further, fuel oil control servomechanism comprises the oil-feed governor valve, and the oil-feed governor valve is communicated with the filler opening of fuel oil control servomechanism, and fuel oil control servomechanism is used to regulate the fuel flow that control flows into the filler opening of fuel oil control servomechanism.
Further, the fuel oil sparger comprises the fuel oil divider, and the fuel oil divider is provided with the valve that is communicated with each oil outlet of fuel oil sparger, and the fuel oil divider is through the fuel flow in the spray bar that the valve adjusting gets into each fuel nozzle is connected.
Further, each fuel nozzle correspondence is connected with a cylinder head; Be provided with spiral cylinder head air flue between each fuel nozzle and the corresponding cylinder head.
Further, fuel injection system also comprises admission line and lubricating oil pond, and admission line is divided into a plurality of branch roads after passing the lubricating oil pond, and a plurality of branch roads are connected with a plurality of cylinder head air flues respectively correspondingly.
Further, on first oil inlet pipe, also be provided with pressure switch and electric fuel punp.
Further, the number of fuel tank is a plurality of, and first end of first oil inlet pipe is provided with a fuel oil selector, and the fuel oil selector is communicated with a plurality of fuel tanks simultaneously; Be provided with the oil filter at the oil outlet place of each fuel tank.
A kind of aeroengine includes above-mentioned fuel injection system.
The present invention has following beneficial effect: fuel injection system of the present invention is owing to used fuel oil control servomechanism and fuel oil sparger; Can freely regulate the flow of fuel oil and the amount of fuel that uniform distribution flows to each fuel nozzle; Thereby guarantee evenly, avoid each temperature cylinder inhomogeneous or single cylinder is overheated each cylinder fuel feeding; On the other hand, air is through lubricating oil pond and be heated intensification, thereby avoided occurring at the fuel nozzle place phenomenon that low temperature freezes.
Except top described purpose, feature and advantage, the present invention also has other purpose, feature and advantage.To do further detailed explanation to the present invention with reference to figure below.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the fuel injection system structural representation of existing technology; And
Fig. 2 is the structural representation of vaporizing chamber of the fuel injection system of existing technology;
Fig. 3 is the fuel injection system structural representation of the preferred embodiment of the present invention; And
Fig. 4 is the fuel injection system principle schematic of the preferred embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Referring to Fig. 3, a kind of fuel injection system is used for fuel from fuel tank is extracted out and is pumped in the intake duct of each cylinder head of motor.This fuel injection system comprises: fuel pump 1, fuel oil control servomechanism 3, fuel oil sparger 5, a plurality of fuel nozzle 7 and admission line 14.The oil inlet end 11 of fuel pump 1 is communicated with fuel tank 10 through first oil inlet pipe 21; The fuel oil of fuel tank 10 the insides is under the pumping of fuel pump 1; Be transported in the fuel oil control servomechanism 3 through second oil inlet pipe 22; Fuel oil is regulated flow through fuel oil control servomechanism 3 and is delivered to fuel oil sparger 5 again, and fuel oil sparger 5 has a plurality of oil outlets 52, after 5 uniform distributions of fuel oil sparger, is transported in a plurality of fuel nozzles 7 afterwards.Air through after the supercharging at fuel nozzle 7 places with after fuel oil mixes, form mist of oil, again mist of oil is delivered in the intake duct of each cylinder head of motor.
Fuel oil control servomechanism 3 comprises filler opening 31, oil outlet 32 and oil-feed governor valve 33.The filler opening 31 of fuel oil control servomechanism 3 is connected with the oil outlet end 12 of fuel pump 1 through second oil inlet pipe 22; The oil outlet 32 of fuel oil control servomechanism 3 is connected with fuel oil sparger 5 through oil outlet tube 4; Oil-feed governor valve 33 is communicated with filler opening 31, regulates the fuel flow that control flows into filler opening 31.Like this; Owing to be provided with oil-feed governor valve 33; Therefore can be sent to the fuel flow of fuel oil control servomechanism 3 according to the need fuel-flow control of each cylinder of motor, thereby control is transported to the fuel flow in the fuel oil sparger 5, makes the demand of fuel oil output quantity and each cylinder adapt.If this fuel oil control servomechanism 3 is not set, then the fuel oil output quantity can not effectively be controlled, and oil mass is crossed conference and caused that oil inflame is insufficient, loss increases, and fuel utilization ratio diminishes; Oil mass is crossed that I haven't seen you for ages and is caused each cylinder fuel oil shortage, and outputting power is not enough.Preferably, first oil inlet pipe 21, second oil inlet pipe 22 and oil outlet tube 4 are soft oil pipe.
In conjunction with reference to Fig. 4, admission line 14 comprises air-strainer 141, stagnation pressure air flue 142 and closure 143, and air gets into stagnation pressure air flue 142 behind air-strainer 141; Form pressurized gas; Pressurized gas pass lubricating oil pond 15 behind closure 143, pressurized gas are divided into a plurality of branch roads after passing lubricating oil pond 15, and a plurality of branch roads are connected with a plurality of cylinder head air flues 13 respectively correspondingly; Get into cylinder head air flue 13, and mix with the fuel oil of fuel nozzle 7 ejections at cylinder head air flue 13 places.Because the temperature of lubricating oil is very high in the lubricating oil pond 15, generally about 200 ℃, therefore, after pressurized gas passed lubricating oil pond 15, its temperature also can raise.Mix with fuel oil so again, avoided effectively when mixing, freezing.
Preferably, on first oil inlet pipe 21 of this fuel injection system, also be provided with pressure switch 8 and electric fuel punp 9; First end at first oil inlet pipe 21 is provided with a fuel oil selector 12, and this fuel oil selector 17 is communicated with two or more fuel tanks 10 simultaneously; Be provided with oil filter 18 at the oil outlet place of fuel tank 10.
A kind of aeroengine has fuel injection system, and this fuel injection system is above-mentioned fuel injection system.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a fuel injection system is characterized in that, comprising: fuel pump (1), fuel oil control servomechanism (3), fuel oil sparger (5) and a plurality of fuel nozzle (7),
The oil inlet end (11) of said fuel pump (1) is communicated with fuel tank (10);
The filler opening (31) of said fuel oil control servomechanism (3) is connected with the oil outlet end (12) of said fuel pump (1);
The filler opening (51) of said fuel oil sparger (5) is connected with the oil outlet (32) of said fuel oil control servomechanism (3); Said fuel oil sparger (5) has a plurality of oil outlets (52);
Said a plurality of fuel nozzle (7) is connected with a plurality of oil outlets (52) of said fuel oil sparger (5) correspondingly, and carries the fuel oil of equivalent in each pairing said fuel nozzle of said oil outlet (52) (7) to this by each said oil outlet (52).
2. fuel injection system according to claim 1 is characterized in that,
The oil inlet end (11) of said fuel pump (1) is communicated with fuel tank (10) through first oil inlet pipe (21); The filler opening (31) of said fuel oil control servomechanism (3) is connected with the oil outlet end (12) of said fuel pump (1) through second oil inlet pipe (22); The filler opening (51) of said fuel oil sparger (5) is connected through the oil outlet (32) of oil outlet tube (4) with said fuel oil control servomechanism (3), and said fuel nozzle (7) is connected with the oil outlet (52) of said fuel oil sparger (5) through spray bar (6);
Said first oil inlet pipe (21), said second oil inlet pipe (22) and said oil outlet tube (4) are soft oil pipe;
Said spray bar (6) is the hard oil pipe.
3. fuel injection system according to claim 1 is characterized in that,
Said fuel oil control servomechanism (3) comprises oil-feed governor valve (33); Said oil-feed governor valve (33) is communicated with the filler opening (31) of said fuel oil control servomechanism (3), and said fuel oil control servomechanism (3) is used for regulating the fuel flow that control flows into the filler opening (31) of said fuel oil control servomechanism (3).
4. fuel injection system according to claim 3 is characterized in that,
Said fuel oil sparger (5) comprises fuel oil divider (53); Said fuel oil divider (53) is provided with the valve that is communicated with each said oil outlet (52) of said fuel oil sparger (5), and said fuel oil divider (53) is through the fuel flow in the said spray bar (6) that said valve adjusting gets into each said fuel nozzle (7) is connected.
5. fuel injection system according to claim 4 is characterized in that,
Each said fuel nozzle (7) correspondence is connected with a cylinder head;
Be provided with spiral cylinder head air flue (13) between each said fuel nozzle (7) and its corresponding cylinder head.
6. fuel injection system according to claim 5 is characterized in that,
Said fuel injection system also comprises admission line (14) and lubricating oil pond (15), and said admission line (14) is divided into a plurality of branch roads after passing said lubricating oil pond (15), and a plurality of said branch roads are connected with a plurality of said cylinder head air flues (13) respectively correspondingly.
7. fuel injection system according to claim 6 is characterized in that,
On said first oil inlet pipe (21), also be provided with pressure switch (8) and electric fuel punp (9).
8. fuel injection system according to claim 7 is characterized in that,
The number of said fuel tank (10) is a plurality of, and first end of said first oil inlet pipe (21) is provided with a fuel oil selector (17), and said fuel oil selector (17) is communicated with a plurality of said fuel tanks (10) simultaneously;
Be provided with oil filter (18) at the oil outlet place of each said fuel tank (10).
9. an aeroengine has fuel injection system, it is characterized in that, said fuel injection system is each described fuel injection system in the claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102938728A CN102434349A (en) | 2011-09-30 | 2011-09-30 | Fuel injection system and aircraft engine with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102938728A CN102434349A (en) | 2011-09-30 | 2011-09-30 | Fuel injection system and aircraft engine with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102434349A true CN102434349A (en) | 2012-05-02 |
Family
ID=45982636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102938728A Pending CN102434349A (en) | 2011-09-30 | 2011-09-30 | Fuel injection system and aircraft engine with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102434349A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956621A (en) * | 2017-12-12 | 2018-04-24 | 成都航利电气有限公司 | A kind of main fuel pump performance test device |
| CN111674560A (en) * | 2020-06-19 | 2020-09-18 | 四川省天域航通科技有限公司 | Unmanned aerial vehicle oil circuit repacking structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4442673A (en) * | 1980-11-24 | 1984-04-17 | Juanita J. Haworth | Combination cycle, dual process engine |
| US4556037A (en) * | 1983-05-18 | 1985-12-03 | Shirley A. Wisdom | Apparatus for the uniform distribution of fuel to a multi cylinder spark ignition engine |
| US4918925A (en) * | 1987-09-30 | 1990-04-24 | General Electric Company | Laminar flow fuel distribution system |
| US5213084A (en) * | 1990-06-20 | 1993-05-25 | Robert Bosch Gmbh | Fuel injection system for internal combustion engines |
| CN101784788A (en) * | 2007-08-23 | 2010-07-21 | 欧陆汽车有限责任公司 | Injection system for an internal combustion engine |
| CN101956618A (en) * | 2009-07-17 | 2011-01-26 | 罗伯特.博世有限公司 | Move the method for the fuel system of internal-combustion engine with metering unit and petrolift |
-
2011
- 2011-09-30 CN CN2011102938728A patent/CN102434349A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4442673A (en) * | 1980-11-24 | 1984-04-17 | Juanita J. Haworth | Combination cycle, dual process engine |
| US4556037A (en) * | 1983-05-18 | 1985-12-03 | Shirley A. Wisdom | Apparatus for the uniform distribution of fuel to a multi cylinder spark ignition engine |
| US4918925A (en) * | 1987-09-30 | 1990-04-24 | General Electric Company | Laminar flow fuel distribution system |
| US5213084A (en) * | 1990-06-20 | 1993-05-25 | Robert Bosch Gmbh | Fuel injection system for internal combustion engines |
| CN101784788A (en) * | 2007-08-23 | 2010-07-21 | 欧陆汽车有限责任公司 | Injection system for an internal combustion engine |
| CN101956618A (en) * | 2009-07-17 | 2011-01-26 | 罗伯特.博世有限公司 | Move the method for the fuel system of internal-combustion engine with metering unit and petrolift |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956621A (en) * | 2017-12-12 | 2018-04-24 | 成都航利电气有限公司 | A kind of main fuel pump performance test device |
| CN111674560A (en) * | 2020-06-19 | 2020-09-18 | 四川省天域航通科技有限公司 | Unmanned aerial vehicle oil circuit repacking structure |
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| PB01 | Publication | ||
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Application publication date: 20120502 |