CN206429332U - Diesel engine Unit injector fueller - Google Patents
Diesel engine Unit injector fueller Download PDFInfo
- Publication number
- CN206429332U CN206429332U CN201621321539.8U CN201621321539U CN206429332U CN 206429332 U CN206429332 U CN 206429332U CN 201621321539 U CN201621321539 U CN 201621321539U CN 206429332 U CN206429332 U CN 206429332U
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- CN
- China
- Prior art keywords
- injector
- rocker arm
- fuel
- unit injector
- drive rod
- 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.)
- Expired - Fee Related
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model discloses a kind of Diesel engine Unit injector fueller, including camshaft chest, injection cam axle, injector rocker arm and Unit injector, camshaft chest lateral surface is provided with fuel oil control magnetic valve, injection timing mechanism, fuel-flow control bar and injector rocker arm eccentric shaft are provided with camshaft chest, fuel oil control solenoid-driven fuel-flow control bar vertically moves and promotes the rack on Unit injector to move and realize distributive value control, injection timing mechanism is connected by the linkage with drive rod with injector rocker arm eccentric shaft, the movement of drive rod is converted into the rotation of injector rocker arm eccentric shaft, displacement transducer detects drive rod shift position and the accurate control realized to Unit injector injection timing that linked with proportion magnetic valve.The utility model drives injector rocker arm eccentric shaft by injection timing mechanism, adjusts injection advance angle, and controls solenoid valve control Unit injector throttle position with fuel oil, realizes that all operating mode distributive values of engine and injection timing are accurately controlled.
Description
Technical field
The utility model is related to technical field of engines, especially a kind of Diesel engine Unit injector for fuel injection
Fueller.
Background technology
Existing Unit injector Diesel engine typically uses mechanical pump nozzle or electrically-controlled pump nozzle.Mechanical pump nozzle by
Distributive value governor motion and injection equipment composition, injection pressure can reach 1600bar even more highs, but mechanical Unit injector is generally only
Simple realization fuel-flow control, it is impossible to directly reach Europe III and above discharge standard.The fuel injector of electronically controlled unit pump has independent oil
Pump, and integrated solenoid valve control needle-valve unlatching at the time of and the duration, can be adjusted flexibly, a work can be realized as desired
Make multi-injection in cyclic process, but it is complicated, and manufacture and maintenance cost are high.
Utility model content
The technical problems to be solved in the utility model is：Deficiency in the prior art is overcome to start there is provided a kind of can realize
The Diesel engine Unit injector fueller that all operating mode distributive values of machine and injection timing are accurately controlled.
The utility model solves the technical scheme that its technical problem used：A kind of Diesel engine Unit injector fuel feeding dress
Put, including camshaft chest, the injection cam axle in camshaft chest, the pump installed in camshaft chest lateral surface injection fuel oil
Nozzle, provided with the injector rocker arm for realizing Unit injector oil spout, described camshaft chest lateral surface between injection cam axle and Unit injector
It is provided with fuel oil control magnetic valve, injection timing mechanism, camshaft chest provided with fuel-flow control parallel with injection cam axle
Bar and injector rocker arm eccentric shaft, fuel oil control solenoid-driven fuel-flow control bar vertically move and promote the rack on Unit injector to move
The dynamic control realized to Unit injector distributive value, injection timing mechanism has timing driver, displacement transducer and ratio electromagnetism
Valve, injection timing mechanism is connected by the linkage with drive rod with injector rocker arm eccentric shaft, and timing driver, which is promoted, to be driven
Lever moves and realizes injector rocker arm eccentric shaft turns, and displacement transducer detection drive rod shift position feeds back to engine
ECU and the accurate control realized to Unit injector injection timing that linked with proportion magnetic valve.
Specifically, described fuel oil control magnetic valve has position sensor and electronic actuators, and fuel-flow control bar has
Fuel-flow control shift fork and propulsion shift fork, electronic actuators promotion fuel-flow control shift fork move and realized the movement of fuel-flow control bar,
Detection electronic actuators are connected with the propulsion shift fork driving rack movement moved with fuel-flow control bar, described position sensor
Displacement and feed back to ECU tappet.
And drive rod that described linkage includes be connected with timing driver, drive arm component and two ends respectively with
Drive rod and the connecting rod of driving arm component connection, driving arm component are connected with injector rocker arm eccentric shaft.
Further, described timing driver has connection drive rod and the hydraulic valve being opened and closed by proportional solenoid valve control
Bar, the return spring being sleeved on drive rod, by engine oil pump provide engine oil pressure overcome return spring elastic force only
Valve is returned, check-valves side, which is provided with, is used for the position magnet that displacement transducer detects drive rod shift position.
Preferably, to realize the oil spout of Unit injector, described injector rocker arm is arranged on injector rocker arm eccentric shaft, and oil spout is shaken
The installation axle center of arm and the installation axle center of camshaft chest have eccentric distance e, and injector rocker arm one end is contacted with injection cam axle, oil spout
The rocking arm other end is pressed on the spring base of Unit injector upper end.
The beneficial effects of the utility model are：The utility model controls solenoid-driven throttle lever longitudinal direction by fuel oil
It is mobile, and then the rack movement on Unit injector is driven, the control to Unit injector distributive value is realized, injection timing mechanism passes through connecting rod
Mechanism is connected with injector rocker arm eccentric shaft, and the axial movement of drive rod is converted into circumferentially rotating for injector rocker arm eccentric shaft, and
Proportion of utilization solenoid valve control, realizes that injection timing device promotes drive rod to be fixed optional position in defined range, finally
The effective eccentricity of injector rocker arm is controlled, the Regulation in all life process to injection advance angle is reached.
Brief description of the drawings
The utility model is further illustrated with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation after E direction view rotated ninety degrees in Fig. 1.
Fig. 3 is F direction views in Fig. 2.
Fig. 4 is B-B cross section structure diagrams in Fig. 3.
The displacement transducer 6. of 1. injector rocker arm eccentric shaft, 2. injection cam axle, 3. injector rocker arm, 4. Unit injector 5. in figure
The fuel-flow control bar 11. of 9. electronic actuators of timing driver 7. proportion magnetic valve, 8. position sensor 10. promotes shift fork
12. the hydraulic pressure of 17. camshaft chest of the connecting rod 15. of 13. drive rod of rack 14. driving 16. fuel-flow control shift fork of arm component 18.
The tappet of 21. position magnet of valve rod 19. check-valves, 20. return spring 22.
Embodiment
The utility model is further described presently in connection with accompanying drawing.These accompanying drawings are simplified schematic diagram only to show
Meaning mode illustrates basic structure of the present utility model, therefore it only shows the composition relevant with the utility model.
A kind of Diesel engine Unit injector fueller as shown in Figure 1 to 4, including camshaft chest 17, installed in convex
Injection cam axle 2 in wheel shaft room 17, the Unit injector 4 for spraying installed in the medial surface of camshaft chest 17 fuel oil, injection cam axle 2 with
Provided with the injector rocker arm 3 for realizing the oil spout of Unit injector 4 between Unit injector 4, the one end of injector rocker arm 3 is contacted with the surface of injection cam axle 2,
The other end of injector rocker arm 3 is connected to the upper end of Unit injector 4 and is pressed on the spring base of the upper end of Unit injector 4, passes through injection cam
The rotation of axle 2 drives injector rocker arm 3 to swing, pressure or trip spring seat and realize the oil spout of Unit injector 4.
The described lateral surface of camshaft chest 17 is separately installed with fuel oil control magnetic valve, injection timing mechanism, camshaft chest
The fuel-flow control bar 10 and injector rocker arm eccentric shaft 1 each parallel to injection cam axle 2 are provided with 17, wherein on fuel-flow control bar 10
With fuel-flow control shift fork 16 and propulsion shift fork 11, fuel-flow control shift fork 16 is connected with fuel oil control magnetic valve, the whole oil of driving
Amount control-rod 10 is moved axially, and promotes the quantity of shift fork 11 to be determined according to engine cylinder number, the spray of synchronous each cylinder pump nozzle 4 of driving
Oil mass, the guide groove that fuel-flow control bar 10 is circumferentially rotated can be limited by being provided with fuel-flow control bar；Injector rocker arm eccentric shaft 1 is installed
When, by processing neck on the inside of the outermost side support arm that camshaft chest 17 is installed, realize that injector rocker arm is inclined using circlip
The axially position of heart axle 1, described injector rocker arm 3 is arranged on injector rocker arm eccentric shaft 1, the installation axle center of injector rocker arm 3 with
The installation axle center of camshaft chest 17 has eccentric distance e.
Described fuel oil control magnetic valve includes position sensor 8 and the two parts of electronic actuators 9, fuel oil control magnetic valve
The outside of camshaft chest 17 is arranged on by four bolts, electronic actuators 9 promote fuel-flow control shift fork 16 to move, entered by back-up ring
And vertically moving for fuel-flow control bar 10 is realized, the tooth promoted on the driving Unit injector 4 of shift fork 11 moved with fuel-flow control bar 10
The movement of bar 12, which is realized, is connected with detection electronic actuators 9 on the control to the distributive value of Unit injector 4, described position sensor 8
Displacement and the tappet 22 for feeding back to ECU.
Described injection timing mechanism includes timing driver 6, displacement transducer 5 and proportion magnetic valve 7, injection timing
Mechanism is connected by linkage with injector rocker arm eccentric shaft 1, specifically, and described linkage includes and timing driver 6
The connecting rod that drive rod 13, driving arm component 15 and the two ends of connection are connected with drive rod 13 and driving arm component 15 respectively
14, driving arm component 15 is connected with injector rocker arm eccentric shaft 1.
Described timing driver 6 have connection drive rod 13 and by proportion magnetic valve 7 control opening and closing hydraulic valve stem 18,
The return spring 20 that is sleeved on drive rod 13 and the check-valves 19 for overcoming the elastic force of return spring 20, the side of check-valves 19 is provided with
The position magnet 21 of the shift position of drive rod 13 is detected for displacement transducer 5.During control, the pressure of engine oil pump supply
Machine oil is opened by being introduced into check-valves 19, the control hydraulic valve stem 18 of proportion magnetic valve 7 after machine filter, and pressure machine oil passes through check-valves
19 overcome the screen resilience of return spring 20, promote hydraulic valve stem 18 to realize that drive rod 13 moves linearly, and the straight line of drive rod 13
It is moved through the circumferential movement that linkage effect changes into driving arm component 15 so that injector rocker arm eccentric shaft 1 and actuating arm
Component synchronization is rotated, and displacement transducer 5 determines the shift position of drive rod 13 by the position of test position magnet 21 and fed back
To the ECU of engine, and the accurate control realized to the injection timing of Unit injector 4 that linked with proportion magnetic valve 7.
The opening and closing of aforementioned proportion magnetic valve 7, fuel oil control the action of magnetic valve, there is the electronic control unit of engine
(i.e. ECU) regulation control.ECU is detected according to the speed probe installed in flywheel shell of engine and the region of interest of camshaft chest 17
Engine speed and crank angle, throttle sensor signal and other sensor signals arrived carry out optimal fuel Injection Control,
By controlling proportion electro-magnet 7 to the adhesive of hydraulic valve stem 18 and putting from realizing the closing and unlatching of hydraulic valve, and pass through fuel oil
The control of magnetic valve magnet coil effective current is controlled, the optimal oil injection time of Unit injector 4 and supply time is realized.
In actual use, fueller is controlled by electronic control unit (ECU), passes through sensor collection vehicle and engine
The operation of operating condition and driver is intended to, the signal that ECU is inputted according to sensor, can under all working conditions to oil spout just
When and distributive value accurately controlled, bare machine can reach EuropeⅢ emission standard, and after increase after-treatment system, discharge can even reach
To the discharge standard of Europe IV, environmental-protecting performance is greatly improved.Unit injector 4 directly uses actuated by cams, and only the fuel feeding in oil spout, drives
Dynamic torque is low, and consumption power is small, and the fueller is lower than electronically controlled unit pump cost, and sexual valence is higher；Its Power coverage scope is wide,
It is adapted to use and marine diesel engine and generating set to heavy goods vehicles use, locomotive from light-duty.
The utility model controls solenoid-driven throttle lever 10 to vertically move by fuel oil, and then drives Unit injector 4
On rack 12 move, realize control to the distributive value of Unit injector 4, injection timing mechanism is inclined with injector rocker arm by linkage
Heart axle 1 is connected, and the axial movement of drive rod 13 is converted into circumferentially rotating for injector rocker arm eccentric shaft 1, and proportion of utilization electromagnetism
Valve 7 is controlled, and realizes that injection timing device promotes drive rod 13 to be fixed optional position in defined range, and final control oil spout is shaken
The effective eccentricity of arm 3, reaches the Regulation in all life process to injection advance angle.
Above-mentioned embodiment is only to illustrate technical concepts and features of the present utility model, and its object is to allow be familiar with this skill
The personage of art can understand content of the present utility model and be carried out, and protection model of the present utility model can not be limited with this
Enclose, all equivalent change or modifications made according to the utility model Spirit Essence should all cover in protection model of the present utility model
In enclosing.
Claims (5)
1. a kind of Diesel engine Unit injector fueller, including camshaft chest (17), the spray in camshaft chest (17)
Oily camshaft (2), the Unit injector (4) installed in camshaft chest (17) lateral surface injection fuel oil, injection cam axle (2) and Unit injector
(4) provided with the injector rocker arm (3) for realizing Unit injector (4) oil spout between, it is characterized in that：Described camshaft chest (17) lateral surface peace
Equipped with fuel oil control magnetic valve, injection timing mechanism, oil mass parallel with injection cam axle (2) is provided with camshaft chest (17)
Control-rod (10) and injector rocker arm eccentric shaft (1), fuel oil control solenoid-driven fuel-flow control bar (10) are vertically moved and promoted
The mobile control realized to Unit injector (4) distributive value of rack (12) on Unit injector (4), injection timing mechanism has timing driving
Device (6), displacement transducer (5) and proportion magnetic valve (7), injection timing mechanism pass through the linkage with drive rod (13)
It is connected with injector rocker arm eccentric shaft (1), timing driver (6) promotes drive rod (13) mobile and realizes injector rocker arm eccentric shaft
(1) rotate, displacement transducer (5) detection drive rod (13) shift position feed back to engine ECU and with proportion magnetic valve (7)
The accurate control to Unit injector (4) injection timing is realized in linkage.
2. Diesel engine Unit injector fueller according to claim 1, it is characterized in that：Described fuel oil control electromagnetism
Valve has position sensor (8) and electronic actuators (9), and fuel-flow control bar (10), which has fuel-flow control shift fork (16) and promoted, to be dialled
Pitch (11), electronic actuators (9) promote fuel-flow control shift fork (16) mobile and realize the movement of fuel-flow control bar (10), with oil mass
Mobile propulsion shift fork (11) the driving rack (12) of control-rod (10) is mobile, and detection is connected with described position sensor (8)
The displacement of electronic actuators (9) and the tappet (22) for feeding back to ECU.
3. Diesel engine Unit injector fueller according to claim 1, it is characterized in that：Described linkage includes
The drive rod (13) that is connected with timing driver (6), driving arm component (15) and two ends respectively with drive rod (13) and driving
The connecting rod (14) of arm component (15) connection, driving arm component (15) is connected with injector rocker arm eccentric shaft (1).
4. Diesel engine Unit injector fueller according to claim 3, it is characterized in that：Described timing driver
(6) there is connection drive rod (13) and the hydraulic valve stem (18) of opening and closing is controlled by proportion magnetic valve (7), drive rod (13) is sleeved on
On return spring (20), provide engine oil pressure by engine oil pump and overcome the check-valves of return spring (20) elastic force
(19), check-valves (19) is provided with sideways is used for the position magnet (21) that displacement transducer (5) detects drive rod (13) shift position.
5. Diesel engine Unit injector fueller according to claim 1, it is characterized in that：Described injector rocker arm (3)
On injector rocker arm eccentric shaft (1), the installation axle center of injector rocker arm (3) has inclined with the installation axle center of camshaft chest (17)
The heart is contacted away from e, injector rocker arm (3) one end with injection cam axle (2), and injector rocker arm (3) other end is pressed on Unit injector (4)
On the spring base of end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621321539.8U CN206429332U (en) | 2016-12-02 | 2016-12-02 | Diesel engine Unit injector fueller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621321539.8U CN206429332U (en) | 2016-12-02 | 2016-12-02 | Diesel engine Unit injector fueller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206429332U true CN206429332U (en) | 2017-08-22 |
Family
ID=59587688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621321539.8U Expired - Fee Related CN206429332U (en) | 2016-12-02 | 2016-12-02 | Diesel engine Unit injector fueller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206429332U (en) |
-
2016
- 2016-12-02 CN CN201621321539.8U patent/CN206429332U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170822 Termination date: 20211202 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |