CN207568754U - A kind of heating unit for vehicle injection system and oily rail injector assembly - Google Patents
A kind of heating unit for vehicle injection system and oily rail injector assembly Download PDFInfo
- Publication number
- CN207568754U CN207568754U CN201721643340.1U CN201721643340U CN207568754U CN 207568754 U CN207568754 U CN 207568754U CN 201721643340 U CN201721643340 U CN 201721643340U CN 207568754 U CN207568754 U CN 207568754U
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- Prior art keywords
- fuel
- heating
- heating unit
- circulation passage
- heating part
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 137
- 238000002347 injection Methods 0.000 title claims abstract description 7
- 239000007924 injection Substances 0.000 title claims abstract description 7
- 239000000446 fuel Substances 0.000 claims abstract description 100
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 99
- 238000009835 boiling Methods 0.000 description 6
- 239000003502 gasoline Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model provides a kind of heating unit for vehicle injection system and oily rail injector assembly, is related to engine fuel feed system technical field.Oily rail injector assembly includes oily rail and the corresponding heating unit of multiple oil outlets and multiple fuel injectors.Oil outlet is coaxially disposed with fuel injector.Heating unit includes ontology and heater plug.Ontology has fuel inlet, fuel outlet and the heating chamber of connection fuel inlet and fuel outlet.Heater plug has the heating part for being heated to fuel, and heating part is set in heating chamber, and circulation passage is cooperatively formed with heating chamber.Circulation passage has opposite arrival end and the port of export, and the arrival end of circulation passage is connected by ingate with fuel inlet, and the port of export of circulation passage is connected with fuel outlet.Ingate is configured to that fuel is made along heating part tangentially to enter so that fuel is flowed into spiral type around heating part.The utility model reduces arrangement difficulty, reduces cost, increases substantially heat transfer efficiency.
Description
Technical field
The utility model is related to engine fuel feed system technical fields, and vehicle oil spout system is used for more particularly to one kind
The heating unit of system and oily rail injector assembly.
Background technology
The cost of methanol is more much lower than gasoline, therefore, gradually increases using methanol as fuel automobile.At present, multi-point gas-duct sprays
The oily rail injector assembly for penetrating formula petrol engine is generally designed using PTC heating fuel injectors or heating unit in oily rail
Inside pipe (both ends setting heating rod).When in the prior art, using PTC heating fuel injectors, the efficiency of heating surface is low, generates heat not
Methanol is heated to room temperature by foot at a lower temperature.And using heating unit inside oily rail pipe, such as：The both ends of oily rail into
Row heating.This mode is more demanding to arrangement space, and heats the methanol temperature difference uneven, each fuel injector sprays, mark
Fixed more difficult with control, the efficiency of heating surface is low.And it is relatively tired to be easy to cause startup in methanol engine cold start-up for above device
The problems such as difficult, automobile is shaken, unstable idle speed.
Utility model content
One purpose of the utility model is to provide for a kind of heating unit for vehicle injection system, existing to solve
The problem of heating devices heat efficiency is low in technology.
The utility model one is further objective is that a kind of oily rail injector assembly will be provided, to solve methanol engine
Methanol evaporation is difficult during low-temperature cool starting, starts the problems such as more difficult.
Particularly, the utility model provides a kind of heating unit for vehicle injection system, before flowing into fuel injector
Fuel heated, including：
Ontology has fuel inlet, fuel outlet and the heating chamber for connecting the fuel inlet and the fuel outlet；
Heater plug is fixedly installed at the ontology, has the heating part for being heated to the fuel, the heating part
It is set in the heating chamber, circulation passage is cooperatively formed with the heating chamber；
Wherein, the circulation passage has opposite arrival end and the port of export, and the arrival end of the circulation passage is by entering
Oral pore is connected with the fuel inlet, and the port of export of the circulation passage is connected with the fuel outlet；
The ingate be configured to make the fuel tangentially to enter along the heating part so that the fuel into spiral type around
The heating part flowing.
Optionally, the ingate is vertical with the circulation passage.
Optionally, the ingate is configured to trapezoidal hole, and one end area close to the circulation passage is less than the other end
Area.
Optionally, the fuel inlet and the fuel outlet are at same axis.
Optionally, axis where the axis of the heating chamber and the fuel outlet is into predetermined angle.
Optionally, the cup holder for installing the fuel injector is further included, the cup holder is fixedly installed in the fuel outlet
Place.
Optionally, the ontology further includes the sensor cavity for disposing temperature sensor, the sensor cavity with it is described
The port of export of circulation passage is connected.
Optionally, the heating part is secondary heating part close to the part of the arrival end, and the heating part goes out described in
The part at mouth end is main heating part, and the operating temperature of the main heating part is higher than the operating temperature of the secondary heating part.
Optionally, the main heating part constructs tapered close to one end of the port of export.
Particularly, the utility model additionally provides a kind of oily rail injector assembly, including：
It is provided with the oily rail of multiple oil outlets；
With the heating unit described in any one of multiple corresponding claim 1-9 of oil outlet, it is each described plus
The fuel inlet of thermal is connected with the corresponding oil outlet；With
The multiple fuel injectors being installed at cup holder；
Wherein, the oil outlet is coaxially disposed with the corresponding fuel injector.
The heating unit of the utility model, since the ingate that the arrival end with circulation passage is connected is configured to make fuel edge
Heating part tangentially enters, and fuel is made to be flowed into spiral type around heating part, improves unit volume methanol fuel and is heated with heater plug
The area of portion's contact, is conducive to heat transfer, improves the efficiency of heating surface.In addition, ingate is vertical with the circulation passage, and construct
For trapezoidal hole, one end area close to the circulation passage is less than the area of the other end, increases the flow velocity of methanol, further improve
Heat transfer.
Further, the fuel inlet of the heating unit of the utility model subtracts with the fuel outlet at same axis
Lack the torque generated during fuel feeding, reduce the risk of leakage.
Further, the oily rail injector assembly of the utility model, the contact area of heating unit and oily rail is big, is conducive to
It is sufficiently sealed.In addition, it is only necessary to heating unit and original oily rail, cup holder be welded together, are easily assembled.
According to the accompanying drawings to the detailed description of the utility model specific embodiment, those skilled in the art will be more
Add the above-mentioned and other purposes, advantages and features of clear the utility model.
Description of the drawings
Some specific realities of the utility model are described in detail by way of example rather than limitation with reference to the accompanying drawings hereinafter
Apply example.Identical reference numeral denotes same or similar component or part in attached drawing.It should be appreciated by those skilled in the art that
What these attached drawings were not necessarily drawn to scale.In attached drawing：
Fig. 1 is the schematic apparatus figure according to the heating unit of the utility model one embodiment；
Fig. 2 is the schematic apparatus figure of the ontology of heating unit shown in Fig. 1；
Fig. 3 is the schematic installation diagram according to the oily rail injector assembly of the utility model one embodiment.
Reference numeral is in figure：
1- heating units, 2- oil rails, 3- fuel injectors,
11- ontologies, 12- heater plugs, 13- temperature sensors, 14- cup holders,
111- fuel inlets, 112- fuel outlets, 113- heating chambers, 114- ingates, 115- sensor cavities, 116- cone spiral shells
Pit, 117- straight threads hole, 121- heating parts.
Specific embodiment
Fig. 1 is the schematic apparatus figure according to the heating unit of the utility model one embodiment.Fig. 2 is added shown in Fig. 1
The schematic apparatus figure of the ontology of thermal.As shown in Figure 1, reference may also be made to Fig. 2, for the heating unit 1 of vehicle injection system,
Fuel before inflow fuel injector 3 can be heated, including ontology 11 and heater plug 12.Ontology 11 have fuel inlet 111,
Fuel outlet 112 and the heating chamber 113 of connection fuel inlet 111 and fuel outlet 112.Heater plug 12 is fixedly installed in ontology
At 11, there is the heating part 121 for being heated to fuel, heating part 121 is set in heating chamber 113, coordinates with heating chamber 113
Form circulation passage.Circulation passage has opposite an arrival end and the port of export, the arrival end of circulation passage by ingate 114 with
Fuel inlet 111 is connected, and the port of export of circulation passage is connected with fuel outlet 112.Ingate 114 is configured to add fuel edge
Hot portion 121 tangentially enters so that fuel is flowed into spiral type around heating part 121.
The heating unit 1 of the utility model, since the ingate 114 that the arrival end with circulation passage is connected is configured to make combustion
Material along heating part 121 tangentially enter, fuel is made to be flowed into spiral type around heating part 121, improve unit volume methanol fuel with
The area of 12 heating part 121 of heater plug contact, is conducive to heat transfer, improves the efficiency of heating surface.In addition, methanol is in circulation passage
When being flowed into spiral type around heating part 121, boiling phenomenon can be generated, heat transfer is more preferable.
In an embodiment of the utility model, ingate 114 is vertical with circulation passage, and is configured to trapezoidal hole, close
One end area of circulation passage is less than the area of the other end, increases the flow velocity of methanol, further improves heat transfer.In addition, plus
Ingate 114 inside thermal 1 can also be vertical with heating chamber 113, and deviates 113 axis of heating chamber so that methanol edge adds
Hot chamber 113 tangentially enters, can be around 121 helical flow of the heating part of heater plug 12.
In another embodiment, the fuel inlet 111 of the heating unit 1 of the utility model with fuel outlet 112 same
At axis, reduce the torque generated during fuel feeding, reduce the risk of leakage.
In order to be heated evenly methanol fuel, the efficiency of heating surface, axis and 112 place of fuel outlet of heating chamber 113 are improved
Axis is into predetermined angle.Preferably, predetermined angle can be 90 °.
In one embodiment of the utility model, heating unit 1 further includes the cup holder for installing fuel injector 3, cup holder
It is fixedly installed at fuel outlet 112, which can easily install fuel injector 3.Cup holder can be welded on heating unit 1
At fuel outlet 112.
In order to control the temperature of methanol, ontology 11 further includes the sensor cavity for disposing temperature sensor 13
115, sensor cavity 115 is connected with the port of export of circulation passage.It can be according to the methanol temperature in heating chamber 113, to preheating
The power of plug 12 is controlled.
In order to further improve the efficiency of heating surface, 12 heating part 121 of heater plug is configured to cylinder, and heating part is close to arrival end
Part be secondary heating part, heating part is main heating part close to the part of the port of export, the operating temperature of main heating part higher than secondary plus
The operating temperature in hot portion.Further, main heating part constructs tapered, structure novel close to the port of export, is more favorable for heating, add
1 internal structure of thermal is conducive to carry out convection current heat transfer.By the special construction, spiral type streamline, increase convection current heat transfer are generated
Coefficient, part of fuel flow back after flowing through heater plug 12 with collision with wall generation, there is the effect of reheating.
With reference to Fig. 1 and Fig. 2, heating unit 1 is by methanol inlet 1, trapezoidal hole 2, heating chamber 113, sensor cavity 115, methanol
Outlet 5, straight thread 6, sealing cone 7, pipe screw thread 8 form.Heater plug 12 is installed at straight thread hole 117, on heater plug 12
The straight thread of straight thread and heating unit 1 coordinates, and is sealed by sealing cone.Temperature sensor 13 is installed on taper thread hole
At 116, pipe screw thread and the pipe screw thread of heating unit 1 on temperature sensor 13 coordinate, and are sealed using pipe screw thread.Heating part
121 end is main heating part, and middle and back is secondary heating part, and the temperature of main heating part is high, and the temperature of secondary heater strip is slightly lower.Methanol
Entrance is coaxial with exporting, and compared to out-of-alignment scheme, reduces the torque generated during fuel feeding, reduces the risk of leakage.
In the prior art, due to the presence of heater, cause fuel injector axis with oily rail oil outlet axis not in same
On straight line, when fuel injector is sprayed, there are certain torques, there is certain risk of leakage.Particularly, inventor is found that a kind of new
Oily rail injector assembly, to solve the above problems.
Fig. 3 is the schematic installation diagram according to the oily rail injector assembly of the utility model one embodiment.Such as Fig. 3 institutes
Show, a kind of oil rail injector assembly, including：
It is provided with the oily rail 2 of multiple oil outlets；
Heating unit 1 corresponding with multiple oil outlets, the fuel inlet 111 of each heating unit 1 with it is corresponding fuel-displaced
Mouth is connected；With
The multiple fuel injectors 3 being installed at cup holder；
Wherein, oil outlet is coaxially disposed with fuel injector 3.
As shown in figure 3, heating unit 1 includes heater plug 12, ontology 11, temperature sensor 13 and cup holder 14.Heating unit 1
It is welded on oily rail 2, is sealed by welding.
The alternative gasoline cold start-up scheme of the program reduces the parts such as gasoline fuel tank, oil pump, nozzle, reduces arrangement
Difficulty reduces cost, and the cold start-up for carrying out the heat protocol is tested.Above-mentioned oil rail injector assembly homogeneous heating, warm raising speed
Degree is fast, and methanol is heated before flowing into each fuel injector 3, and utilizes the high temperature of heater plug 12, and methanol is made to boil to a certain degree,
Certain methanol steam is generated, and using boiling heat transfer, increases substantially heat transfer efficiency.
Heating unit 1 is arranged among 2 pipe of fuel injector 3 and oily rail by the utility model, and fuel-displaced 2 pipe of rail of oil stream is fuel-displaced
Mouth and fuel injector 3 are coaxial, and oily rail injector assembly arrangement is simple.Heating unit 1 and 2 contact area of oily rail are big, are conducive to fully
Sealing.It only needs to weld together heating unit 1 and original oily rail 2, cup holder 14, be easily assembled.
As shown in figure 3, this oily rail injector assembly includes oily rail 2, heating unit 1, fuel injector 3.The core of this assembly
Part is heating unit 1, and heating unit 1 is mounted between oil pipe and cup holder, is wherein only inserted heater plug 12 in heating unit 1, only
There are one heating unit 1 heater plug 12 and temperature sensor 13 are inserted at both ends respectively.Utilize the signal pair of temperature sensor 13
Heater plug 12 is controlled.
The oil rail injector assembly workflow is as follows：Methanol through oily rail 2 enter each heating unit 1 in, from square hole into
Enter inside heating unit 1, the trapezoidal hole and 113 circular hole of heating chamber for connecting fuel inlet 111 and heating chamber 113 are tangent, make methanol
It is flowed into spiral type around heater plug 12, compared to conventional circular hole, improves unit volume methanol fuel and heated with heater plug 12
The area of column contact, is conducive to heat transfer.Simultaneously when methanol fuel encounters 12 head of heater plug, reflux can be generated.
The temperature highest on 12 head of heater plug, makes methanol be heated again.
The boiling point of methanol is 64.7 DEG C, and after -30 DEG C of methanol flows into heating chamber 113, the part that is contacted with heater plug 12
Methanol temperature can be higher, can generate boiling phenomenon after flowing certain distance, generate part methanol steam, increase the evaporation of methanol
Amount, is conducive to combustion mixture and reaches inflammability limit.Meanwhile certain boiling can achieve the effect that boiling heat transfer, increase is led
The magnitude of hot coefficient promotes the efficiency that heat is transmitted.Meanwhile trapezoidal hole, compared to borehole structure, helical flow makes methanol flow rate
Increase, and volume flow is constant, the time flowed through in equal volume needed for heating unit 1 is identical, but convective heat-transfer coefficient bigger, more has
Conducive to heat transfer.
So far, although those skilled in the art will appreciate that detailed herein have shown and described the more of the utility model
A exemplary embodiment, still, still can be according to the utility model public affairs in the case where not departing from the spirit and scope of the utility model
The content opened directly determines or derives many other variations or modifications for meeting the utility model principle.Therefore, this practicality is new
The range of type is understood that and regards as to cover other all these variations or modifications.
Claims (10)
1. a kind of heating unit for vehicle injection system heats the fuel before inflow fuel injector, which is characterized in that
Including：
Ontology has fuel inlet, fuel outlet and the heating chamber for connecting the fuel inlet and the fuel outlet；
Heater plug is fixedly installed at the ontology, has the heating part heated to the fuel, the heating part is set to institute
It states in heating chamber, circulation passage is cooperatively formed with the heating chamber；
Wherein, the circulation passage has opposite arrival end and the port of export, and the arrival end of the circulation passage passes through ingate
It is connected with the fuel inlet, the port of export of the circulation passage is connected with the fuel outlet；
The ingate is configured to that the fuel is made along the heating part tangentially to enter so that the fuel into spiral type around described
It flows heating part.
2. heating unit according to claim 1, which is characterized in that the ingate is vertical with the circulation passage.
3. heating unit according to claim 2, which is characterized in that the ingate is configured to trapezoidal hole, close to described
One end area of circulation passage is less than the area of the other end.
4. heating unit according to claim 1, which is characterized in that the fuel inlet is with the fuel outlet same
At axis.
5. heating unit according to claim 1, which is characterized in that the axis of the heating chamber and the fuel outlet institute
In axis into predetermined angle.
6. heating unit according to claim 1, which is characterized in that the cup holder for installing the fuel injector is further included,
The cup holder is fixedly installed at the fuel outlet.
7. heating unit according to claim 1, which is characterized in that the ontology further includes to dispose temperature sensor
Sensor cavity, the sensor cavity is connected with the port of export of the circulation passage.
8. heating unit according to claim 1, which is characterized in that the heating part is close to the part of the arrival end
Secondary heating part, the heating part are main heating part close to the part of the port of export, and the operating temperature of the main heating part is higher than
The operating temperature of the pair heating part.
9. heating unit according to claim 8, which is characterized in that the main heating part is close to one end of the port of export
It constructs tapered.
10. a kind of oil rail injector assembly, which is characterized in that including：
It is provided with the oily rail of multiple oil outlets；
With the heating unit described in any one of multiple corresponding claim 1-9 of oil outlet, each heating dress
The fuel inlet put is connected with the corresponding oil outlet；With
The multiple fuel injectors being installed at cup holder；
Wherein, the oil outlet is coaxially disposed with the corresponding fuel injector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721643340.1U CN207568754U (en) | 2017-11-30 | 2017-11-30 | A kind of heating unit for vehicle injection system and oily rail injector assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721643340.1U CN207568754U (en) | 2017-11-30 | 2017-11-30 | A kind of heating unit for vehicle injection system and oily rail injector assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207568754U true CN207568754U (en) | 2018-07-03 |
Family
ID=62689350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721643340.1U Active CN207568754U (en) | 2017-11-30 | 2017-11-30 | A kind of heating unit for vehicle injection system and oily rail injector assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207568754U (en) |
-
2017
- 2017-11-30 CN CN201721643340.1U patent/CN207568754U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 637900 No. 180, Section 1, Jianan Road, Jialing District, Nanchong City, Sichuan Province Patentee after: GEELY SICHUAN COMMERCIAL VEHICLE Co.,Ltd. Country or region after: China Patentee after: Zhejiang Geely Remote New Energy Commercial Vehicle Group Co.,Ltd. Patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Address before: 637900 No. 180, Section 1, Jianan Road, Jialing District, Nanchong City, Sichuan Province Patentee before: GEELY SICHUAN COMMERCIAL VEHICLE Co.,Ltd. Country or region before: China Patentee before: ZHEJIANG GEELY NEW ENERGY COMMERCIAL VEHICLE GROUP Co.,Ltd. Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Address after: 637900 No. 180, Section 1, Jianan Road, Jialing District, Nanchong City, Sichuan Province Patentee after: GEELY SICHUAN COMMERCIAL VEHICLE Co.,Ltd. Country or region after: China Patentee after: ZHEJIANG GEELY NEW ENERGY COMMERCIAL VEHICLE GROUP Co.,Ltd. Patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Address before: 637900 No. 180, Section 1, Jianan Road, Jialing District, Nanchong City, Sichuan Province Patentee before: GEELY SICHUAN COMMERCIAL VEHICLE Co.,Ltd. Country or region before: China Patentee before: ZHEJIANG GEELY NEW ENERGY COMMERCIAL VEHICLES Co.,Ltd. Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240311 Address after: 310051 No. 1760, Jiangling Road, Hangzhou, Zhejiang, Binjiang District Patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Country or region after: China Patentee after: Zhejiang Geely Remote New Energy Commercial Vehicle Group Co.,Ltd. Patentee after: Tianjin Alcohol Hydrogen Research and Development Co.,Ltd. Address before: 637900 No. 180, Section 1, Jianan Road, Jialing District, Nanchong City, Sichuan Province Patentee before: GEELY SICHUAN COMMERCIAL VEHICLE Co.,Ltd. Country or region before: China Patentee before: Zhejiang Geely Remote New Energy Commercial Vehicle Group Co.,Ltd. Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. |
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| TR01 | Transfer of patent right |