CN208966463U - Diesel electric-controlled monoblock pump fuel oil circulator - Google Patents
Diesel electric-controlled monoblock pump fuel oil circulator Download PDFInfo
- Publication number
- CN208966463U CN208966463U CN201821645161.6U CN201821645161U CN208966463U CN 208966463 U CN208966463 U CN 208966463U CN 201821645161 U CN201821645161 U CN 201821645161U CN 208966463 U CN208966463 U CN 208966463U
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- China
- Prior art keywords
- valve rod
- pump housing
- valve
- pump
- rod assembly
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Abstract
The utility model discloses diesel electric-controlled monoblock pump fuel oil circulator, including the pump housing, it is placed in the electromagnet for being powered under the control of diesel engine ECU at the top of the pump housing and attracting and moving upwards, it is assemblied in the intracorporal upper valve base of pump, the valve rod assembly (3) being connect with armature being assemblied in upper valve base and the ball sealer being located between limit ball seat and lower valve base, valve rod assembly (3) necking segment shaft end circular conical surface uplink is bonded to form sealing surface with the internal conical surface of upper valve base lower port, downlink forms valve rod necking down asphalt channel, it is characterized by: pump housing side setting back leakage connection two (6), pump housing side wall is provided with the through-hole of connection valve rod assembly (3) necking segment and back leakage connection two (6).When distributive value reaches diesel engine needs, high pressure fuel is flowed through through the through-hole of valve rod necking down asphalt channel and pump housing side wall flows out the pump housing by back leakage connection two (6), the hydraulic coupling for acting on armature, fluctuating on valve rod assembly (3) is eliminated, oil pump oil mass stability is improved.
Description
Technical field
The utility model relates to diesel electric-controlled monoblock pump fuel oil circulator.
Background technique
Currently, well known air-cooled single-cylinder diesel engine electronically controlled unit pump, as shown in Fig. 2, having one to be placed at the top of the pump housing
Be powered under the control of diesel engine ECU the electromagnet for attracting armature to move upwards, be assemblied in the intracorporal upper valve base of pump, be assemblied in
The valve rod assembly 3 being connect with armature in upper valve base and the ball sealer being located between limit ball seat and lower valve base, valve rod assembly 3
Cylindrical surface and the same diameter of upper valve base centre bore, formed sealing surface；Under 3 necking segment shaft end circular conical surface uplink of valve rod assembly and upper valve base
The internal conical surface of portion port is bonded to form sealing surface, downlink formed valve rod necking down asphalt channel, lower valve base be provided with central passage and
Central passage lower part is provided with circular cone valve hole, and circular cone valve hole and ball sealer form ball valve, and fuel inlet fitting 4 is connected to lower valve base
Gasket type fuel-flow control is arranged on the electromagnet of pump housing upper end in central passage, back leakage connection 1 between electromagnet and valve rod
Mechanism 2, gasket type fuel control mechanism 2 include the gasket that is arranged on electromagnet and mounted in the gasket and stretch out armature
3 top of valve rod assembly between spring.
Air-cooled single-cylinder diesel engine electronically controlled unit pump fuel oil loop structure is as shown in Figures 2 and 3, moves downward process in plunger
In, at this point, electromagnet remains powered on the female cone for making 3 necking segment shaft end circular conical surface uplink and upper valve base lower port of valve rod assembly
Face paste closes to form sealing surface, and fuel oil enters the pump housing, the ball valve opened from lower valve base by low pressure oil duct from fuel inlet fitting 4
Flow into plunger cavity；During plunger moves upwards, the fuel oil in plunger cavity is compressed to fuel injector oil duct, and fuel oil enters high pressure
Oil pipe, when oil pressure is greater than the cracking pressure of atomizer, fuel injection beginning；When distributive value reaches diesel engine needs, electromagnet
It is powered off under the control of diesel engine ECU, the spring of gasket type fuel control mechanism 2 pushes valve rod assembly 3 to move downward, and makes
3 necking segment shaft end circular conical surface of valve rod assembly leaves the internal conical surface of upper valve base lower port, forms valve rod necking down asphalt channel, high
Compression ignition oil flows through valve rod assembly 3, gasket type fuel control mechanism 2 through conical valve, is left by back leakage connection 1, when in the pump housing
When oil pressure is lower than the closing pressure of atomizer, end of injection.
Although existing air-cooled single-cylinder diesel engine electronically controlled unit pump fuel oil loop structure can be realized fuel oil and recycle, but by
When fuel oil flows through valve rod assembly 3, to valve rod assembly 3 be applied with one from bottom to top, fluctuation hydraulic coupling as shown in figure 3, make
Lead to the adjusting oil pump oil mass that gasket type fuel control mechanism 2 can not be stable with the hydraulic coupling fluctuated on valve rod assembly 3, causes
Oil pump oil mass is unstable.
Summary of the invention
To solve above-mentioned technical problem of the existing technology, the utility model provides diesel electric-controlled monoblock pump fuel oil and follows
Loop device.The diesel electric-controlled monoblock pump fuel oil circulator of the utility model, including the pump housing, be placed at the top of the pump housing and sent out in diesel oil
It is powered under the control of motivation ECU and attracts the electromagnet moved upwards, be assemblied in the intracorporal upper valve base of pump, be assemblied in upper valve base
The valve rod assembly 3 being connect with armature and the ball sealer being located between limit ball seat and lower valve base, 3 necking segment shaft end of valve rod assembly
Circular conical surface uplink is bonded to form sealing surface with the internal conical surface of upper valve base lower port, and downlink forms valve rod necking down asphalt channel,
Lower valve base is provided with central passage and central passage lower part is provided with circular cone valve hole, circular cone valve hole centering ball sealer, fuel inlet fitting 4
Lower valve base central passage is connected to by low pressure oil duct, it is characterised in that: back leakage connection 26 is arranged in the pump housing side, in institute
The pump housing side wall stated is provided with the through-hole of connection valve rod assembly 3 necking segment and back leakage connection 26.
Further, screw-type fuel control mechanism 5, the screw-type fuel-flow control machine are set between electromagnet and valve rod
Structure 5 includes the adjustment screw being arranged on electromagnet, and the adjustment screw includes in electromagnet mounting hole
The adjusting screw being threadedly coupled with electromagnet, the adjusting screw lower end surface are contacted with the spring top surface mounted in valve stem tip,
The adjusting screw bar portion is set in the sealing ring that electromagnet mounting hole forms sealing, the adjusting screw upper surface setting
There is the precession slot with the cooperation of precession tool.
The diesel electric-controlled monoblock pump fuel oil circulator of the utility model has following good effect, the utility model
Diesel electric-controlled monoblock pump fuel oil circulator, fuel oil enter the pump housing from fuel inlet fitting 4, open from lower valve base by low pressure oil duct
The circular cone valve hole opened flows into plunger cavity, and electromagnet, which remains powered on, at this time keeps 3 end of valve rod assembly and upper valve base lower port close
It closes, fuel oil not can enter 3 necking segment of valve rod assembly；During plunger moves upwards, the fuel oil in plunger cavity is compressed to spray
Oily device oil duct, fuel oil enter high-pressure oil pipe, when oil pressure is greater than the cracking pressure of atomizer, fuel injection beginning；When distributive value reaches
Diesel engine needs, and electromagnet powers off under the control of diesel engine ECU, and the spring of screw-type fuel control mechanism 5 pushes away
Ovable valve stem component 3 moves downward, and 3 end of valve rod assembly and upper valve base lower port is made to form valve rod necking down asphalt channel, high pressure
Fuel oil is flowed through through the through-hole of valve rod necking down asphalt channel and pump housing side wall flows out the pump housing by back leakage connection 26, eliminates and acts on
The hydraulic coupling fluctuated on armature, valve rod assembly 3 improves oil pump oil mass stability.
Detailed description of the invention
Fig. 1 is the schematic diagram of the diesel electric-controlled monoblock pump fuel oil circulator of the utility model.
Fig. 2 is the schematic diagram of the diesel electric-controlled monoblock pump fuel oil circulator of the prior art.
Fig. 3 is flow schematic diagram at the top of the fuel oil of the diesel electric-controlled monoblock pump fuel oil circulator of the prior art.
In figure: 1. back leakage connections one, 2. gasket type fuel control mechanisms, 3. valve rod assemblies, 4. fuel inlet fittings, 5. screws
Formula fuel control mechanism, 6. back leakage connections two.
Specific embodiment
To further illustrate the principles of the present invention and structure, the embodiments of the present invention are carried out now in conjunction with attached drawing
It is described in detail.
Referring to Fig. 1, the diesel electric-controlled monoblock pump fuel oil circulator of the utility model, including the pump housing, it is placed in pump housing top
Portion is powered under the control of diesel engine ECU to be attracted the electromagnet moved upwards, is assemblied in the intracorporal upper valve base of pump, is assemblied in
The valve rod assembly 3 being connect with armature in upper valve base and the ball sealer being located between limit ball seat and lower valve base, valve rod assembly 3
Necking segment shaft end circular conical surface uplink is bonded to form sealing surface with the internal conical surface of upper valve base lower port, and downlink forms valve rod necking down
Asphalt channel, lower valve base is provided with central passage and central passage lower part is provided with circular cone valve hole, circular cone valve hole centering ball sealer,
Fuel inlet fitting 4 is connected to lower valve base central passage by low pressure oil duct, it is characterised in that: back leakage connection is arranged in the pump housing side
26, the pump housing side wall is provided with the through-hole of connection valve rod assembly 3 necking segment and back leakage connection 26.
Further, screw-type fuel control mechanism 5, the screw-type fuel-flow control machine are set between electromagnet and valve rod
Structure 5 includes the adjustment screw being arranged on electromagnet, and the adjustment screw includes in electromagnet mounting hole
The adjusting screw being threadedly coupled with electromagnet, the adjusting screw lower end surface are contacted with the spring top surface mounted in valve stem tip,
The adjusting screw bar portion is set in the sealing ring that electromagnet mounting hole forms sealing, the adjusting screw upper surface setting
There is the precession slot with the cooperation of precession tool.
The above, only the utility model preferred embodiment, therefore the utility model implementation cannot be limited with this
Range should still belong to this reality that is, according to equivalent changes and modifications made by present utility model application the scope of the patents and description
In the range of being covered with new patent.
Claims (2)
1. diesel electric-controlled monoblock pump fuel oil circulator including the pump housing, is placed in pump housing top in the control of diesel engine ECU
Lower be powered attracts the electromagnet moved upwards, is assemblied in the intracorporal upper valve base of pump, is assemblied in connecting in upper valve base with armature
Valve rod assembly (3) and the ball sealer being located between limit ball seat and lower valve base, on the circular conical surface of valve rod assembly (3) necking segment shaft end
Row is bonded to form sealing surface with the internal conical surface of upper valve base lower port, and downlink forms valve rod necking down asphalt channel, and lower valve base is opened
There is central passage and central passage lower part is provided with circular cone valve hole, circular cone valve hole centering ball sealer, fuel inlet fitting (4) passes through low
Pressure oil road is connected to lower valve base central passage, it is characterised in that: back leakage connection two (6) are arranged in the pump housing side, described
Pump housing side wall is provided with the through-hole of connection valve rod assembly (3) necking segment and back leakage connection two (6).
2. diesel electric-controlled monoblock pump fuel oil circulator according to claim 1, it is characterised in that: in electromagnet and valve
Screw-type fuel control mechanism (5) are set between bar, the screw-type fuel control mechanism (5) includes being arranged on electromagnet
Adjustment screw, the adjustment screw include the adjusting spiral shell being threadedly coupled in electromagnet mounting hole with electromagnet
Nail, the adjusting screw lower end surface are contacted with the spring top surface mounted in valve stem tip, and the adjusting screw bar portion is set in
Electromagnet mounting hole forms the sealing ring of sealing, and the adjusting screw upper surface is provided with the precession with the cooperation of precession tool
Slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821645161.6U CN208966463U (en) | 2018-10-11 | 2018-10-11 | Diesel electric-controlled monoblock pump fuel oil circulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821645161.6U CN208966463U (en) | 2018-10-11 | 2018-10-11 | Diesel electric-controlled monoblock pump fuel oil circulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208966463U true CN208966463U (en) | 2019-06-11 |
Family
ID=66759513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821645161.6U Expired - Fee Related CN208966463U (en) | 2018-10-11 | 2018-10-11 | Diesel electric-controlled monoblock pump fuel oil circulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208966463U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162849A (en) * | 2018-10-11 | 2019-01-08 | 成都威特电喷有限责任公司 | A kind of electronically controlled unit pump fuel oil loop structure |
-
2018
- 2018-10-11 CN CN201821645161.6U patent/CN208966463U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162849A (en) * | 2018-10-11 | 2019-01-08 | 成都威特电喷有限责任公司 | A kind of electronically controlled unit pump fuel oil loop structure |
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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: 20190611 Termination date: 20211011 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |