CN207813807U - A kind of fuel injector supporting mechanism and engine - Google Patents
A kind of fuel injector supporting mechanism and engine Download PDFInfo
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- CN207813807U CN207813807U CN201721872545.7U CN201721872545U CN207813807U CN 207813807 U CN207813807 U CN 207813807U CN 201721872545 U CN201721872545 U CN 201721872545U CN 207813807 U CN207813807 U CN 207813807U
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- fuel injector
- hole
- injection valve
- supporting mechanism
- lateral support
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Abstract
To overcome the problems, such as that fuel injector supporting mechanism is easily since lateral forces cause needle valve structure to damage in the prior art,The utility model provides a kind of fuel injector supporting mechanism,Including cylinder head,Fuel dispenser and fuel injector,Fuel injector includes injection valve and needle valve structure,Fuel dispenser connects the oil inlet of injection valve,Needle valve structure connects the oil outlet of injection valve,The link position of injection valve and needle valve structure is provided with lateral support platform,Nozzle opening is provided in cylinder head,Nozzle opening includes interconnected from outside to inside stepped hole,Lateral support hole and sealing hole,The end abutment of injection valve is on step surface,The outer wall of injection valve and the inner wall clearance fit of stepped hole,Lateral support platform coordinates with the transition of lateral support hole,Needle valve structure and sealing hole clearance fit,The first sealing ring is arranged on needle valve structure,First sealing ring is interference fitted with sealing hole.The utility model can reduce the lateral force that fuel injector is subject to, and can keep service life and the durability of engine.
Description
Technical field
The utility model belongs to technical field of engines, and in particular to a kind of fuel injector supporting mechanism and engine.
Background technology
Fuel injector is an important component of engine, effect be according to the calculated injection timing of Engine ECU and
Pulsewidth (distributive value), to inlet manifold or in-cylinder injection fuel oil, fuel injector is actually a solenoid valve, and ECU passes through control
The current switching (break-make of ground wire) of its electromagnetic valve coil controls the work of fuel injector.When have electric current by when, fuel injector
Plunger is attracted, and needle-valve rises, and realizes fuel oil injection.
In the prior art, mainly fuel injector is fixed in cylinder head by the bolt arrangement of outside setting, in fuel injector
Work in, fuel injector stressing conditions are complex, there is the effect of the lateral force perpendicular to fuel injector axial direction, with Fuel System
The effect of the increase for pressure of uniting, the lateral force suffered by fuel injector can be all the more apparent, it is possible to cause injector body needle-valve knot
The failure and damage of structure；It is also possible to cause the deformation of seal ring of fuel injector, so as to cause the seal failure of fuel injector, causes gas
Pressure and fuel leakage.
Utility model content
For existing fuel injector supporting mechanism easily since lateral forces cause that needle valve structure damages and seal failure is asked
Topic, the utility model provide a kind of fuel injector supporting mechanism and engine.
Technical solution is as follows used by the utility model solves above-mentioned technical problem：
On the one hand, the utility model embodiment provides a kind of fuel injector supporting mechanism, including cylinder head, fuel dispenser
And fuel injector, the fuel injector include injection valve and needle valve structure, the fuel dispenser is connected to the oil inlet of the injection valve
On mouth, the needle valve structure is connected on the oil outlet of the injection valve, the connection position of the injection valve and the needle valve structure
It installs and is equipped with lateral support platform, be provided with nozzle opening in the cylinder head, the nozzle opening includes interconnected from outside to inside platform
Rank hole, lateral support hole and sealing hole, the position that the stepped hole connects with the lateral support hole form step surface, the spray
The end abutment of fuel tap is on the step surface, and the inner wall clearance fit of the outer wall of the injection valve and the stepped hole is described
Lateral support platform coordinates with lateral support hole transition, the needle valve structure and the sealing hole clearance fit, the needle-valve
The first sealing ring is arranged in structure, first sealing ring is interference fitted with the sealing hole.
Optionally, the nozzle opening further includes the first pilot hole and the second pilot hole, first pilot hole and described
For two pilot holes between the lateral support hole and the sealing hole, first pilot hole and second pilot hole are cone
Shape hole, from the lateral support hole to the sealing hole direction, the radius of first pilot hole is gradually reduced, and described second leads
It is gradually reduced to the radius in hole.
Optionally, the end set of the injection valve towards the needle valve structure has shock ring, the shock ring to be resisted against
On the step surface, the inner wall clearance fit of the outer wall of the shock ring and the stepped hole.
Optionally, the fuel dispenser includes that supervisor, dispensing head and mounting portion, the dispensing head and mounting portion connect side by side
It being connected on the supervisor, the dispensing head is connect with the oil inlet of the injection valve, and the first mounting hole is provided on the mounting portion,
It is provided with the second mounting hole in the cylinder head, is provided with and is bolted between first mounting hole and second mounting hole.
Optionally, fitting groove is provided on the dispensing head, the fitting groove is connected to the supervisor, the injection valve
Oil inlet pipe is connected at oil inlet, the oil inlet pipe and the needle valve structure are located at the both ends that the injection valve is away from each other,
The second sealing ring is socketed on the oil inlet pipe, the oil inlet pipe stretches into the fitting groove, second sealing ring with it is described
Fitting groove is interference fitted.
Optionally, the fuel injector further includes having compression ring, and the compression ring includes lantern ring and is connected to the lantern ring two
Two elastic arcs of side, the lantern ring are socketed on the oil inlet pipe, and the lantern ring abuts the injection valve, the elastic arc
It is connected to the outer end face of the fitting groove on the dispensing head.
Optionally, card slot, the card slot and the opening of the fitting groove are additionally provided on the dispensing head towards consistent, institute
It further includes having fixture block to state fuel injector, and the fixture block is arranged side by side with the oil inlet pipe, and the fixture block stretches into the card slot.
Optionally, the fuel injector further includes having plug connector, and the plug connector includes interconnecting piece and plug division, the connection
The one end in portion connects the injection valve, and the other end of the interconnecting piece connects the plug division, and the plug division is equipped with grafting
Slot.
Optionally, multiple reinforcing ribs are provided on the outer wall of the interconnecting piece.
On the other hand, the utility model embodiment provides a kind of engine, including fuel injector as described above supports machine
Structure.
According to fuel injector supporting mechanism provided by the utility model, lateral support platform is provided on the fuel injector,
It is socketed with the first sealing ring on needle valve structure, is interference fitted by the elasticity between sealing hole and the first sealing ring, it can be effective
Ground seals the combustion chamber inside cylinder head with external environment, can buffer the side that fuel injector generates at work to a certain extent
To active force；By transition cooperation rigid between lateral support hole and lateral support platform, can be provided for fuel injector reliably
Support such as generates lateral force when fuel injector works, which can provide reversed support, make fuel injector uniform force, subtract
Few lateral force to needle valve structure and the first sealing ring, to keep service life and the durability of fuel injector.
Description of the drawings
Fig. 1 is the explosive view for the fuel injector supporting mechanism that one embodiment of the utility model provides；
Fig. 2 is the side shot figure for the fuel injector supporting mechanism that one embodiment of the utility model provides；
Fig. 3 is the side schematic view of its cylinder head of the fuel injector supporting mechanism of one embodiment of the utility model offer；
Fig. 4 is the explosion sectional view for the fuel injector supporting mechanism that one embodiment of the utility model provides；
Fig. 5 is the sectional view of its nozzle opening of the fuel injector supporting mechanism of one embodiment of the utility model offer；
Fig. 6 is the sectional view for the fuel injector supporting mechanism part-structure that one embodiment of the utility model provides；
Fig. 7 is the enlarged diagram at A in Fig. 6.
Reference numeral in Figure of description is as follows：
1, cylinder head；11, nozzle opening；111, sealing hole；112, the first pilot hole；113, the second pilot hole；114, lateral
Supported hole；115, stepped hole；12, the second mounting hole；2, fuel injector；21, injection valve；211, shock ring；22, needle valve structure；
221, the first sealing ring；23, lateral support platform；24, plug connector；241, interconnecting piece；2411, reinforcing rib；242, plug division；
2421, inserting groove；25, oil inlet pipe；251, the second sealing ring；26, compression ring；261, lantern ring；262, elastic arc；27, fixture block；3、
Fuel dispenser；31, it is responsible for；32, dispensing head；321, fitting groove；322, card slot；33, mounting portion；331, the first mounting hole；34、
Bolt.
Specific implementation mode
The technical issues of in order to keep the utility model solved, technical solution and advantageous effect are more clearly understood, below
In conjunction with accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific implementation described herein
Example is only used to explain the utility model, is not used to limit the utility model.
As shown in Fig. 1~7, one embodiment of the utility model discloses a kind of fuel injector supporting mechanism, including cylinder head 1,
Fuel dispenser 3 and fuel injector 2, the fuel injector 2 include injection valve 21 and needle valve structure 22, and the fuel dispenser 3 connects
On the oil inlet of the injection valve 21, the needle valve structure 22 is connected on the oil outlet of the injection valve 21, the oil spout
Valve 21 and the link position of the needle valve structure 22 are provided with lateral support platform 23, and nozzle opening 11, institute are provided in the cylinder head 1
State stepped hole 115, lateral support hole 114 and sealing hole 111 that nozzle opening 11 includes interconnected from outside to inside, the stepped hole
115 positions to connect with the lateral support hole 114 form step surface, and the end abutment of the injection valve 21 is in the step surface
On, the inner wall clearance fit of the outer wall of the injection valve 21 and the stepped hole 115, the lateral support platform 23 with it is described lateral
114 transition of supported hole coordinates, the needle valve structure 22 and 111 clearance fit of the sealing hole, is arranged on the needle valve structure 22
There are the first sealing ring 221, first sealing ring 221 to be interference fitted with the sealing hole 111.
It is provided with lateral support platform 23 on the fuel injector 2, the first sealing ring 221 is socketed on needle valve structure 22,
It, can be effectively by the burning inside cylinder head 1 by the elasticity interference fit between sealing hole 111 and the first sealing ring 221
Room is sealed with external environment, can buffer the lateral force that fuel injector 2 generates at work to a certain extent；By laterally propping up
It supports transition rigid between hole 114 and lateral support platform 23 to coordinate, can be that fuel injector 2 provides reliable support, in fuel injector 2
When work, lateral force is such as generated, which can provide reversed support, make 2 uniform force of fuel injector, reduce to needle valve structure
22 and first sealing ring 221 lateral force, to keep service life and the durability of fuel injector 2.
It should be understood that the lateral force because reducing needle valve structure 22 and the first sealing ring 221 so that fuel injector 2
In use, needle valve structure 22 is not easy to be influenced and be damaged by lateral force, and the first sealing ring 221 is not easy to by side
It is deformed, causes because of the deformation of the first sealing ring 221 close between fuel injector 2 and nozzle opening 11 to the influence of active force
Envelope failure, causes air pressure and fuel leakage.
In the present embodiment, lateral support hole 114 is cylindrical hole；Lateral support platform 23 is connected for multiple round platforms, and phase
Radius between round platform even is intervally arranged in small one and large one, and the periphery of the big round platform of radius is equipped with certain fillet, lateral to prop up
The maximum radius for supportting the round platform on platform 23 is not more than the aperture in lateral support hole 114, ensures outer wall and the side of lateral support platform 23
Coordinate to the inner wall energy transition of supported hole 114.
Above-mentioned fuel injector supporting mechanism solves the problems, such as following two：One is because in 2 outer wall of fuel injector and nozzle opening 11
Because hole is excessive between wall so that fuel injector 2 at work, can not be bonded between fuel injector 2 and nozzle opening 11, be caused without lateral
The support of active force, to reduce the service life of fuel injector 2.The second is because between 11 inner wall of 2 outer wall of fuel injector and nozzle opening
Because hole is too small or does not have hole so that be difficult to assemble between fuel injector 2 and nozzle opening 11, increase fuel injector 2 and nozzle opening
Assembling difficulty between 11.
As shown in figure 5, in the present embodiment, the nozzle opening 11 further includes the first pilot hole 112 and the second pilot hole
113, first pilot hole 112 and second pilot hole 113 are located at the lateral support hole 114 and the sealing hole 111
Between, first pilot hole 112 and second pilot hole 113 are bellmouth, from the lateral support hole 114 to described close
The radius in 111 direction of sealing of hole, first pilot hole 112 is gradually reduced, and the radius of second pilot hole 113 is gradually reduced.
It should be understood that between stepped hole 115, lateral support hole 114, the second pilot hole 113, the first pilot hole 112 and sealing hole 111
It is sequentially connected, and its radius is gradually reduced, needle valve structure 22 is that gap is matched with the first pilot hole 112 and the second pilot hole 113
It closes.Because the radius of the radius ratio sealing hole 111 in lateral support hole 114 is much larger, sealing hole 111 is such as straight with lateral support hole 114
It connects in succession, the connection difficulty between being increased greatly because of radius difference each other, so needing in sealing hole 111 and lateral support
First pilot hole 112 and the second pilot hole 113 are set between hole 114, pass through the first pilot hole 112 and the second pilot hole 113
Guiding role so that needle valve structure 22 can smoothly enter nozzle opening 11.
In the present embodiment, the end set of the injection valve 21 towards the needle valve structure 22 has shock ring 211, described
Shock ring 211 is resisted against on the step surface, the inner wall clearance fit of the outer wall of the shock ring 211 and the stepped hole 115.
Shock ring 211 can compensate for axial impact force caused by 2 course of work of fuel injector, can carry out axial constraint to fuel injector 2,
Meanwhile damper can slow down the axial vibrations of fuel injector 2, have good damping effect.
Specifically, shock ring 211 is arranged in injection valve 21 towards the end of needle valve structure 22, and shock ring 211 enters step
In hole 115, and shock ring 211 is abutted with step surface.The outer wall of shock ring 211 and the inner wall clearance fit of stepped hole 115.
As shown in Fig. 2, in the present embodiment, the fuel dispenser 3 includes being responsible for 31, dispensing head 32 and mounting portion 33,
The dispensing head 32 and mounting portion 33 are connected to side by side on the supervisor 31, the oil inlet of the dispensing head 32 and the injection valve 21
Mouthful connection, is provided with the first mounting hole 331 on the mounting portion 33, is provided with the second mounting hole 12 in the cylinder head 1, and described first
The connection of bolt 34 is provided between mounting hole 331 and second mounting hole 12.It should be understood that fuel dispenser 3 is by dividing
It is connect with fuel injector 2 with first 32, and fuel injector 2 is connected to the nozzle opening 11 in cylinder head 1；Fuel dispenser 3 passes through bolt 34
Mounting portion 33 is fixed on the second mounting hole 12 in cylinder head 1, is made in mounting portion 33 and the cylinder head 1 of fuel dispenser 3
The second mounting hole 12 be fixedly connected；By two reconnect so that connected between fuel dispenser 3 and cylinder head 1 it is more firm, no
Fuel dispenser 3 can be caused to loosen because of the interference of extraneous factor, the case where to generate fuel leakage.
As shown in figure 4, in the present embodiment, be provided with fitting groove 321 on the dispensing head 32, the fitting groove 321 with
The supervisor 31 is connected to, and oil inlet pipe 25, the oil inlet pipe 25 and the needle-valve knot are connected at the oil inlet of the injection valve 21
Structure 22 is located at the both ends that the injection valve 21 is away from each other, and is socketed with the second sealing ring 251 on the oil inlet pipe 25, it is described into
Oil pipe 25 stretches into the fitting groove 321, and second sealing ring 251 is interference fitted with the fitting groove 321.By in oil inlet
The second sealing ring 251 is arranged on pipe 25 so that can be sealed between oil inlet pipe 25 and fitting groove 321, because the second sealing ring 251 has
There is certain elasticity so that interference fit can be realized between the second sealing ring 251 and fitting groove 321.
In the present embodiment, the fuel injector 2 further includes having compression ring 26, and the compression ring 26 includes lantern ring 261 and connects
Two elastic arcs 262 of 261 both sides of the lantern ring are connected to, the lantern ring 261 is socketed on the oil inlet pipe 25, and the lantern ring
261 abut the injection valve 21, and the elastic arc 262 is connected to the outer end face of the fitting groove 321 on the dispensing head 32.It can
With understanding, fuel injector 2 is connect by oil inlet pipe 25 with the fitting groove 321 on fuel dispenser 3, by being covered on oil inlet pipe 25
If the second sealing ring 251 makes to be tightly connected between fuel injector 2 and fuel dispenser 3, then by injection valve 21 and assembly
One compression ring 26 is set between slot 321, the axial direction of fuel injector 2 can be limited, prevent fuel dispenser 3 because pressure is excessive
And damage fuel injector 2.By the way that compression ring 26 is arranged between fuel dispenser 3 and fuel injector 2, because compression ring 26 has certain bullet
Property power so that with certain cushioning effect power when fuel dispenser 3 presses to fuel injector 2；And between fuel injector 2 and nozzle opening 11
Equipped with shock ring 211, shock ring 211 can be abutted to step surface, between the outer wall and the inner wall of stepped hole 115 of shock ring 211
Gap coordinates so that can be connected between fuel injector 2 and nozzle opening 11；In this way, fuel dispenser 3, fuel injector 2 and nozzle opening 11 it
Between can realize connection.
As shown in figs. 1 and 4, in the present embodiment, the fuel injector 2 further includes having plug connector 24, and the plug connector 24 wraps
Include interconnecting piece 241 and plug division 242, one end of the interconnecting piece 241 connects the injection valve 21, the interconnecting piece 241 it is another
One end connects the plug division 242, and the plug division 242 is equipped with inserting groove 2421.
In the present embodiment, card slot 322, the card slot 322 and the fitting groove 321 are additionally provided on the dispensing head 32
Opening towards consistent, the fuel injector 2 further includes having fixture block 27, and the fixture block 27 is arranged side by side with the oil inlet pipe 25, institute
Fixture block 27 is stated to stretch into the card slot 322.Specifically, fixture block 27 is mounted on the plug connector 24 of fuel injector 2；More specifically, block
Block 27 is connected on the interconnecting piece 241 of plug connector 24, passes through the card slot being inserted into the fixture block 27 on interconnecting piece 241 on dispensing head 32
In 322, fuel dispenser 3 effectively can carry out position-limiting action to fuel injector 2, and fuel injector 2 can be limited by card slot 322
Rotate in a circumferential direction angle, ensure that the design management and control of spray angle in 2 installation process of fuel injector.
In the present embodiment, multiple reinforcing ribs 2411 are provided on the outer wall of the interconnecting piece 241.By in interconnecting piece
Reinforcing rib 2411 is set on 241 outer wall, can improve fuel injector 2 structural stability of itself, and fuel injector 2 with cylinder
When nozzle opening 11 on lid 1 coordinates, there is larger cooperation area between fuel injector 2 and cylinder head 1, it can be to fuel injector 2
It is circumferentially limited so that the positioning between fuel injector 2 and cylinder head 1 is more stable, also, without increasing other components, dress
It is standby more convenient.
Another embodiment of the utility model provides a kind of engine, including above-mentioned fuel injector supporting mechanism.
Engine further includes cylinder (not marked in figure), and cylinder includes cylinder head 1, and cylinder head 1 is equipped with multiple be spaced apart
The nozzle opening 11 of arrangement, fuel injector 2 are mounted in nozzle opening 11.
Due to being had above-mentioned technique effect according to the fuel injector supporting mechanism of the utility model above-described embodiment,
It is provided with lateral support platform 23 on the fuel injector 2, the first sealing ring 221 is socketed on needle valve structure 22, passes through sealing hole
111 and the first elasticity between sealing ring 221 be interference fitted, can effectively by inside cylinder head 1 combustion chamber and external rings
Border seals, and can buffer the lateral force that fuel injector 2 generates at work to a certain extent；By lateral support hole 114 with
Rigid transition cooperation between lateral support platform 23 can be that fuel injector 2 provides reliable support, when fuel injector 2 works, such as
Lateral force is generated, which can provide reversed support, make 2 uniform force of fuel injector, reduce to needle valve structure 22 and first
The lateral force of sealing ring 221, to keep service life and the durability of fuel injector 2.Because reducing the lateral work that fuel injector 2 receives
Firmly, service life and the durability of fuel injector 2 are improved, and engine has used above-mentioned fuel injector 2, to improve engine
Service life and durability have higher economic value.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (10)
1. a kind of fuel injector supporting mechanism, which is characterized in that including cylinder head, fuel dispenser and fuel injector, the fuel injector
Including injection valve and needle valve structure, the fuel dispenser is connected on the oil inlet of the injection valve, and the needle valve structure connects
It being connected on the oil outlet of the injection valve, the link position of the injection valve and the needle valve structure is provided with lateral support platform,
It is provided with nozzle opening in the cylinder head, the nozzle opening includes interconnected from outside to inside stepped hole, lateral support hole and close
Sealing of hole, the position that the stepped hole connects with the lateral support hole form step surface, and the end abutment of the injection valve is in institute
It states on step surface, the inner wall clearance fit of the outer wall of the injection valve and the stepped hole, the lateral support platform and the side
Coordinate to supported hole transition, the needle valve structure and the sealing hole clearance fit, it is close to be arranged with first on the needle valve structure
Seal, first sealing ring are interference fitted with the sealing hole.
2. fuel injector supporting mechanism according to claim 1, which is characterized in that the nozzle opening further includes the first pilot hole
With the second pilot hole, first pilot hole and second pilot hole be located at the lateral support hole and the sealing hole it
Between, first pilot hole and second pilot hole are bellmouth, from the lateral support hole to the sealing hole direction, institute
The radius for stating the first pilot hole is gradually reduced, and the radius of second pilot hole is gradually reduced.
3. fuel injector supporting mechanism according to claim 1, which is characterized in that the injection valve is towards the needle valve structure
End set there is shock ring, the shock ring to be resisted against on the step surface, the outer wall of the shock ring and the stepped hole
Inner wall clearance fit.
4. fuel injector supporting mechanism according to claim 1, which is characterized in that the fuel dispenser includes supervisor, divides
With head and mounting portion, the dispensing head and mounting portion are connected to side by side on the supervisor, the dispensing head and the injection valve
Oil inlet connects, and the first mounting hole is provided on the mounting portion, and the second mounting hole, first installation are provided in the cylinder head
It is provided with and is bolted between hole and second mounting hole.
5. fuel injector supporting mechanism according to claim 4, which is characterized in that it is provided with fitting groove on the dispensing head,
The fitting groove is connected to the supervisor, and oil inlet pipe, the oil inlet pipe and the needle are connected at the oil inlet of the injection valve
Valve arrangement is located at the both ends that the injection valve is away from each other, and the second sealing ring, the oil inlet pipe are socketed on the oil inlet pipe
It stretches into the fitting groove, second sealing ring is interference fitted with the fitting groove.
6. fuel injector supporting mechanism according to claim 5, which is characterized in that the fuel injector further includes having compression ring,
The compression ring includes lantern ring and is connected to two elastic arcs of the lantern ring both sides, and the lantern ring is socketed on the oil inlet pipe
On, and the lantern ring abuts the injection valve, the elastic arc is connected to the outer end face of the fitting groove on the dispensing head.
7. fuel injector supporting mechanism according to claim 5, which is characterized in that it is additionally provided with card slot on the dispensing head,
The card slot is consistent with the opening of fitting groove direction, and the fuel injector further includes having fixture block, the fixture block and the oil inlet
Tube side-by-side is arranged, and the fixture block stretches into the card slot.
8. fuel injector supporting mechanism according to claim 5, which is characterized in that the fuel injector further includes having plug connector,
The plug connector includes interconnecting piece and plug division, and one end of the interconnecting piece connects the injection valve, the interconnecting piece it is another
End connects the plug division, and the plug division is equipped with inserting groove.
9. fuel injector supporting mechanism according to claim 8, which is characterized in that be provided on the outer wall of the interconnecting piece more
A reinforcing rib.
10. a kind of engine, which is characterized in that include the fuel injector support machine as described in any one of claim 1~9
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721872545.7U CN207813807U (en) | 2017-12-26 | 2017-12-26 | A kind of fuel injector supporting mechanism and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721872545.7U CN207813807U (en) | 2017-12-26 | 2017-12-26 | A kind of fuel injector supporting mechanism and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207813807U true CN207813807U (en) | 2018-09-04 |
Family
ID=63331328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721872545.7U Active CN207813807U (en) | 2017-12-26 | 2017-12-26 | A kind of fuel injector supporting mechanism and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207813807U (en) |
-
2017
- 2017-12-26 CN CN201721872545.7U patent/CN207813807U/en active Active
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