CN106593728A - Fuel rail assembly of gasoline engine - Google Patents
Fuel rail assembly of gasoline engine Download PDFInfo
- Publication number
- CN106593728A CN106593728A CN201611223375.XA CN201611223375A CN106593728A CN 106593728 A CN106593728 A CN 106593728A CN 201611223375 A CN201611223375 A CN 201611223375A CN 106593728 A CN106593728 A CN 106593728A
- Authority
- CN
- China
- Prior art keywords
- oil
- gasoline
- heater
- gasoline engine
- rail assembly
- 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.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 239000003921 oil Substances 0.000 claims description 33
- 239000010711 gasoline engine oil Substances 0.000 claims description 20
- 238000009434 installation Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 16
- 238000000889 atomisation Methods 0.000 abstract description 10
- 238000005086 pumping Methods 0.000 abstract 1
- 239000007921 spray Substances 0.000 description 13
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 206010068052 Mosaicism Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 210000003765 sex chromosome Anatomy 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
-
- 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
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/12—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating electrically
- F02M31/125—Fuel
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a fuel rail assembly of a gasoline engine. The fuel rail assembly comprises an oil inlet (4) and an oil channel. Two heaters are arranged in an oil track (5) and extend into an inner cavity of the oil track (5) from the two ends of the oil track (5). The portions, extending into the inner cavity of the oil track (5), of the heaters are each provided with a heater heating body. The heater heating bodies are located at the oil channel. By the adoption of the technical scheme, gasoline is heated before entering an air channel, the kinematic viscosity of gasoline is reduced due to the temperature increase of the gasoline, flowing resistance is reduced, the Reynolds number is increased, accordingly, the fuel turbulence intensity is improved, and pockets of oil are crushed advantageously; and meanwhile, due to continuous rise of the gasoline temperature, the gasoline expands in size, expansion is stacked with pressure spread by an oil pump for oil pumping, the jet pressure is improved indirectly, the jet speed can be increased advantageously, and the atomization effect is improved.
Description
Technical field
The invention belongs to the technical field of engine fuel feed system.More particularly it relates to a kind of gasoline engine
Oily rail assembly.
Background technology
With increasingly stricter emission regulation demands, the generation for reducing HC in cold-start phase is more and more closed
Note.
Oily rail injector assembly designs accurately oil beam jetted and not for the cold start-up contribution to be done of optimization mainly has
The disconnected aspect of fuel-oil atmozation quality two for being lifted.
At present, the in-cylinder direct-jet fuel system of domestic Ge great main engine plants research and development, effectively improves injection precision and combustion
Oil atomization effect, but cost is high, and the construction cycle is longer；Gas-duct jetting technology also continues to optimize improvement, by changing oil spout
Improving fuel atomization effect, the one kind being widely popularized the most is to change fuel injector nozzle hole number, spray orifice shape to the geometry of device
Optimizing spraying, general hole count selects 6～12 holes, while the diameter of single spray orifice reduces can be effectively improved for shape and spray orifice size
Spray particle diameter, hole count is more, after spraying SMD values are less, but the characterisitic parameter such as a engine power moment of torsion determines, institute
The maximum distributive value of needs and minimum distributive value just confirm therewith, generally according to distributive value size, there is an optimum orifice number,
It is so very little with respect to the optimizable space of SMD values, the space of the optimization of the hardware and software platform fuel injector interiors of products structure of maturation
It is minimum.
The Sauter mean diameter (Sauter mean diameter) of described SMD, i.e. oil droplet.
If increase hole count simply, SMD desired values are pursued, the risk of fuel injector blocking may be significantly increased；Simultaneously
For the processing technology of jet orifice plate, coherence request is all high.
As engine performance requires more and more higher, national legislation requires that more and more strictly combustion quality directly affects it
A series of performance indications such as dynamic property, economy and emission performance, and the quality of fuel atomization effect is to determine the pass of combustion position
Key link.Good atomizing effect is the future for realizing efficient burning, for energy-conservation, purification tool are of great significance.
The content of the invention
The present invention provides a kind of gasoline engine oil rail assembly, its objective is to improve gasoline engine fuel atomizing effect, particularly changes
Fuel atomization effect during kind gasoline engine low-temperature cool starting.
To achieve these goals, the technical scheme taken of the present invention is：
The gasoline engine oil rail assembly of the present invention, including oil-in, oil duct, in described oily rail heater is provided with.
The quantity of described heater is two, stretches into the inner chamber of oily rail from the two ends of described oily rail respectively.
Described heater stretches into the part of the inner chamber of oily rail, is respectively equipped with heater heater, and described heater is sent out
The position of hot body is located at respectively at described oil duct.
Described heater is arranged on described oily rail respectively by oily rail end caps.
Gasoline in described oily rail is heated to >=100 DEG C.
Described gasoline engine oil rail assembly is arranged on described gasoline engine by two clips.
Oil pipe at described oil duct is fixed respectively by supporting plate.
The fuel injector of described gasoline engine oil rail assembly installs little bowl and is fixed installation by multiple fuel injectors.
Described heater heater is resistance wire.
The present invention adopts above-mentioned technical proposal, is heated into before air flue in gasoline, and the lifting of gasoline temperature is reduced
The kinematic viscosity of gasoline, causes flow resistance to reduce the increase with Reynolds number, so that fuel oil turbulence intensity strengthens, contributes to oil
Beam it is broken；Simultaneously because the lasting rising of gasoline temperature, the pressure superposition that gasoline-volume expansion is propagated with oil pump pump oil, indirectly
Injection pressure is improve, contributes to the raising of jet velocity, improve atomizing effect.
Description of the drawings
Content shown in accompanying drawing and the mark in figure are briefly described as follows：
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the heater heater arrangement schematic diagram inside the oily rail of the present invention；
Fig. 3 is that gasoline does not heat the comparison diagram that 100 DEG C are heated to gasoline of the present invention in prior art.
Structural representation.
It is labeled as in figure：
1st, heater, 2, clip, 3, supporting plate, 4, oil-in, 5, oily rail, 6, supporting plate, 7, oily rail end caps, 8, plus
Hot device, 9, fuel injector little bowl is installed, 10, heater heater, 11, heater heater, 12, oil duct, 13, oil duct, 14, oily rail
End caps.
Specific embodiment
Below against accompanying drawing, by the description to embodiment, further details of is made to the specific embodiment of the present invention
Illustrate there is more complete, accurate and deep reason to inventive concept of the invention, technical scheme to help those skilled in the art
Solution.
Structure of the invention as shown in Figure 1 and Figure 2, is a kind of gasoline engine oil rail assembly, including oil-in 4, oil duct 12, oil
Road 13.
It is theoretical according to power breaking, when round jet sprays at a high speed from spray orifice, in fluid dynamic and environmental gas power
Comprehensive function under, first carry out primary atomization, continuous fluid column division becomes liquid piece and big drop, then carries out two grades of atomizations, by
Step is broken into a large amount of tiny droplets.In whole atomization process, gasoline temperature is improved, reduces viscosity and surface tension so that
The surface tension reduction of broken liquid internal viscous force and liquid is suppressed in atomization process, Reynolds number increase and Weber number subtract
Few, the lower drop of identical gas motion effect easily ruptures.Meanwhile, the circular jet of higher temperature sprays into gas medium, increases
The thermal instability of jet, it helps the improvement of atomizing effect.
In order to overcome the defect of prior art, realize improving the goal of the invention of gasoline engine fuel atomizing effect, the present invention is adopted
The technical scheme for taking is：
As shown in Figure 1 and Figure 2, gasoline engine oil rail assembly of the invention, in described oily rail 5 heater is provided with.In oily rail
Part increases heater and heats to gasoline, and cold gasoline is entered in oily rail by oil-in, after two ends heater is powered, stretches into oil
Resistance wire heating inside rail, gasoline in heating track, the gasoline after heating flows into fuel injector, is injected into air flue.This heating
Type oil rail technical costs is relatively low, and reliability preferably, improves gasoline engine fuel atomizing effect.
Gasoline sprays the flow regime before spray orifice, pressure propagation and is total to by injection pressure, nozzle chamber and gasoline physical characteristic
With decision.If heated into before air flue in gasoline, the lifting of gasoline temperature reduces the kinematic viscosity of gasoline, causes stream
Dynamic resistance reduces the increase with Reynolds number, so that fuel oil turbulence intensity strengthens, contributes to the broken of oily beam；Simultaneously because gasoline
The lasting rising of temperature, the pressure superposition that gasoline-volume expansion is propagated with oil pump pump oil, improves injection pressure indirectly, contributes to
The raising of jet velocity, improves atomizing effect.
The quantity of described heater is two, respectively heater 1 and heater 8, respectively from the two of described oily rail 5
Stretch into the inner chamber of oily rail 5 in end.
Because the diameter of oily rail 5 generally selects φ 10mm or φ 15mm, three-cylinder engine oil rail length about 240mm, four cylinders
Engine oil rail length about 280mm, volume 18840mm of fuel oil in rail3～49455mm3, volume is larger, and due to heater
Stretch into from the two of oily rail 5, the gasoline temperature into each fuel injector is different, therefore, oily rail internal galleries do particular design to solve
The certainly efficiency of heating surface and homogeneous heating sex chromosome mosaicism.
Described heater 1, heater 8 stretch into the part of the inner chamber of oily rail 5, be respectively equipped with heater heater 10, plus
Hot device heater 11, described heater heater 10, the position of heater heater 11 is located at respectively described oil duct 12, oil
At road 13.
Described heater heater 10, heater heater 11 are resistance wire.Gasoline is electrically heated.
Described heater 1, heater 8 is arranged on described by oily rail end caps 7, oily rail end caps 14 respectively
On oily rail 5.
Gasoline in described oily rail 5 is heated to >=100 DEG C.
It is No. 90, No. 93, No. 95 three boards by method octane number RON point according to the unleaded gasoline for vehicle of GB17930 productions
Number, relative density (water=1) 0.70～0.80, relative steam density (air=1) 3～4, -46 DEG C of flash-point, explosion limit
1.4%～7.6% (volume ratio), 415 DEG C～530 DEG C of autoignition temperature, maximum explosion pressure 0.813MPa, it is assumed that 100 DEG C of gasoline
Do not seethe with excitement, bubble-free is produced in gasoline.
Described gasoline engine oil rail assembly is arranged on described gasoline engine by two clips 2.
Oil pipe at described oil duct 12, oil duct 13 is fixed respectively by supporting plate 3, supporting plate 6.
The fuel injector of described gasoline engine oil rail assembly installs little bowl 9 and is fixed installation by multiple fuel injectors.
As shown in figure 3, left figure is the state diagram that gasoline is not heated in prior art, right figure is that gasoline of the present invention is heated to
100 DEG C of state diagram, both are combined contrast.It is obvious that being mainly bulky grain oil droplet in left figure.Typical oil beam angle degree exists
Under 50kPa fuel pressures, the spray model contrast of 100 DEG C of gasoline after 25 DEG C of gasoline spray models of normal temperature and heating can be obvious
Find out that the gasoline spray atomizing effect after 100 DEG C of heating is good compared with the spray atomization effect not heated, bulky grain oil droplet is significantly reduced.
The hot type oil rail assembly principle of heating of the present invention is simple, and optimization spraying SMD effects are obvious.For alternate-engine
Market has extensive researching value and economic worth.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that the present invention is implemented and do not receive aforesaid way
Restriction, as long as employing the improvement of various unsubstantialities that method of the present invention design and technical scheme are carried out, or without changing
Enter and the design of the present invention and technical scheme are directly applied to into other occasions, within protection scope of the present invention.
Claims (9)
1. a kind of gasoline engine oil rail assembly, including oil-in (4), oil duct (12,13), it is characterised in that：In described oily rail (5)
Inside it is provided with heater (1,8).
2. according to the gasoline engine oil rail assembly described in claim 1, it is characterised in that：The quantity of described heater (1,8) is
Two, stretch into the inner chamber of oily rail (5) from the two ends of described oily rail (5) respectively.
3. according to the gasoline engine oil rail assembly described in claim 2, it is characterised in that：Described heater (1,8) stretches into oily rail
(5) part of inner chamber, is respectively equipped with heater heater (10,11), and the position of described heater heater (10,11) is divided
Oil duct (12,13) place that Wei Yu be not described.
4. according to the gasoline engine oil rail assembly described in claim 2, it is characterised in that：Described heater (1,8) passes through respectively
Oily rail end caps (7,14) are on described oily rail (5).
5. according to the gasoline engine oil rail assembly described in claim 1, it is characterised in that：Gasoline heating in described oily rail (5)
To >=100 DEG C.
6. according to the gasoline engine oil rail assembly described in claim 1, it is characterised in that：Described gasoline engine oil rail assembly passes through two
Individual clip (2) is on described gasoline engine.
7. according to the gasoline engine oil rail assembly described in claim 1, it is characterised in that：The oil pipe at described oil duct (12,13) place
It is fixed by supporting plate (3,6) respectively.
8. according to the gasoline engine oil rail assembly described in claim 1, it is characterised in that：The oil spout of described gasoline engine oil rail assembly
Device installs little bowl (9) and is fixed installation by multiple fuel injectors.
9. according to the gasoline engine oil rail assembly described in claim 2, it is characterised in that：Described heater heater (10,11)
For resistance wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611223375.XA CN106593728A (en) | 2016-12-27 | 2016-12-27 | Fuel rail assembly of gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611223375.XA CN106593728A (en) | 2016-12-27 | 2016-12-27 | Fuel rail assembly of gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106593728A true CN106593728A (en) | 2017-04-26 |
Family
ID=58602686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611223375.XA Pending CN106593728A (en) | 2016-12-27 | 2016-12-27 | Fuel rail assembly of gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106593728A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047985A (en) * | 2021-04-20 | 2021-06-29 | 上海交通大学 | Avoid fuel direct contact's fuel heating common rail system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010169031A (en) * | 2009-01-23 | 2010-08-05 | Sanoh Industrial Co Ltd | Fuel heating system |
| CN201963449U (en) * | 2011-04-01 | 2011-09-07 | 山西华顿实业有限公司 | Auxiliary device for cold starting of methanol-fueled automobile |
| CN102635470A (en) * | 2011-02-11 | 2012-08-15 | 玛涅蒂玛瑞利塞斯特默汽车工商有限公司 | Fuel heater set with fuse effect |
| CN202451308U (en) * | 2012-01-16 | 2012-09-26 | 浙江吉利汽车研究院有限公司 | Preheating structure for automobile fuel rail fuel injector |
| CN205638753U (en) * | 2016-03-07 | 2016-10-12 | 马瑞利（中国）有限公司 | Be provided with main oil pipe's of water droplet form fuel oil rail |
-
2016
- 2016-12-27 CN CN201611223375.XA patent/CN106593728A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010169031A (en) * | 2009-01-23 | 2010-08-05 | Sanoh Industrial Co Ltd | Fuel heating system |
| CN102635470A (en) * | 2011-02-11 | 2012-08-15 | 玛涅蒂玛瑞利塞斯特默汽车工商有限公司 | Fuel heater set with fuse effect |
| CN201963449U (en) * | 2011-04-01 | 2011-09-07 | 山西华顿实业有限公司 | Auxiliary device for cold starting of methanol-fueled automobile |
| CN202451308U (en) * | 2012-01-16 | 2012-09-26 | 浙江吉利汽车研究院有限公司 | Preheating structure for automobile fuel rail fuel injector |
| CN205638753U (en) * | 2016-03-07 | 2016-10-12 | 马瑞利（中国）有限公司 | Be provided with main oil pipe's of water droplet form fuel oil rail |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047985A (en) * | 2021-04-20 | 2021-06-29 | 上海交通大学 | Avoid fuel direct contact's fuel heating common rail system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170426 |
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| RJ01 | Rejection of invention patent application after publication |