CN206903792U - A kind of fuel pump injection mechanism - Google Patents
A kind of fuel pump injection mechanism Download PDFInfo
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- CN206903792U CN206903792U CN201720319295.8U CN201720319295U CN206903792U CN 206903792 U CN206903792 U CN 206903792U CN 201720319295 U CN201720319295 U CN 201720319295U CN 206903792 U CN206903792 U CN 206903792U
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- oil
- pressure
- regulating valve
- ejection cavity
- injection
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Abstract
A kind of fuel pump injection mechanism, injection mechanism is provided with the bottom of oil storage barrel, the injection mechanism includes pressure-regulating valve, jet pump and injection pipeline, and the injection pipeline includes oil inlet, oil suction chamber, ejection cavity, inlet port, oil-out, and the oil inlet connects oil suction chamber.Because the pressure release power provided with pressure-regulating valve, pressure-regulating valve carries out injection to assembly, reduced relative to using pump core shunting injection, the traffic requirement of pump core, under equal conditions, electric current is relatively low.And the caliber of jet pump attenuates place's flow velocity increase and pressure reduces, when pressure is decreased below the pressure of surrounding fluid, the fluid of inlet port strengthens induction efficiency i.e. to flowing at this.
Description
Technical field
The present invention relates to a kind of fuel pump injection mechanism.
Background technology
Fuel pump is one of basic composition of fuel injection system, and effect is after fuel oil is suctioned out from fuel tank, pressurizeing
It is transported in fuel feed pump, and fuel pressure regulator coordinates and establishes certain fuel pressure, fuel pump is to oil distributing pipe conveying high-pressure
Fuel oil, ensure to supply lasting fuel oil to atomizer.
Existing fuel pump shunts injection by pump core, big to the traffic requirement of pump core, it is therefore desirable to larger electric current, to lead
Cause power consumption bigger than normal.
The content of the invention
The technical problem that the utility model solves is to provide a kind of fuel pump jet leading device, it is possible to increase induction efficiency is same
When, reduce the traffic requirement of pump core, reduce energy resource consumption.
In order to solve the above technical problems, a kind of fuel pump injection mechanism provided by the utility model, fuel pump include pump
Core and oil storage barrel, injection mechanism is provided with the bottom of oil storage barrel, and the injection mechanism includes pressure-regulating valve, jet pump and injection
Pipeline, the injection pipeline include oil inlet, oil suction chamber, ejection cavity, inlet port, oil-out, and the oil inlet connects oil suction chamber,
Pressure-regulating valve is fixed on the side of oil suction chamber, the oil inlet connection oil suction chamber of the pressure-regulating valve, the pressure-regulating valve
Drain tap stretch into the ejection cavity, the jet pump is arranged in ejection cavity, the jet pump in the front of drain tap,
The inlet port is arranged on the lower end in front of jet pump, and inlet port connection ejection cavity, inlet port is perpendicular with ejection cavity, described to draw
The low side of chamber connection oil-out is penetrated, oil-out is perpendicular with ejection cavity, and the ejection cavity between the inlet port and oil-out is set
There is taper tube chamber.Because provided with pressure-regulating valve, the pressure release power of pressure-regulating valve carries out injection to assembly, relative to using pump core
Injection is shunted, the traffic requirement of pump core is reduced, and under equal conditions, electric current is relatively low.And the caliber of jet pump attenuate place flow velocity increase
And pressure reduces, when pressure is decreased below the pressure of surrounding fluid, the fluid of inlet port strengthens injection i.e. to inflow at this
Efficiency, lower the demand to electric current.
As an improvement, the low side in oil-out is provided with the excessive portion of circular arc towards the side of ejection cavity.In the low side of oil-out
Provided with the excessive portion of circular arc, avoid direct projection oil storage barrel wall from producing backflow, vortex, so as to further increase induction efficiency, reduce noise.
As an improvement, being provided with the installation chamber of the pressure-regulating valve of installation in the bottom of oil storage barrel, the side of chamber is installed
Provided with buckle slotted eye, buckle is provided with buckle slotted eye.Buckle is used for fixation pressure regulating valve, ease of assembly, dismounting and replacing.
Compared with prior art, the beneficial effects of the utility model are that the structure passes through the pressure release of pressure-regulating valve, injection
Pump and injection pipeline utilize Bernoulli Jacob's suction principle, increase induction efficiency, lower the demand to electric current.
Brief description of the drawings
Fig. 1 is the three-dimensional structure diagram of fuel pump injection mechanism.
Fig. 2 is the sectional view of fuel pump injection mechanism.
Embodiment
With reference to embodiment, the present invention will be described in further detail.
As shown in Fig. 1 to 2, as shown in Fig. 1 to 2, the present embodiment is a kind of fuel pump injection mechanism, and fuel pump includes pump core
（It is not shown）With oil storage barrel 1, injection mechanism is provided with the bottom of oil storage barrel 1, the injection mechanism includes pressure-regulating valve 2, drawn
Pump 3 and injection pipeline are penetrated, the injection pipeline includes oil inlet 41, oil suction chamber 42, ejection cavity 43, inlet port 44, oil-out 45,
The oil inlet 41 connects oil suction chamber 42, and pressure-regulating valve 2 is fixed on the side of oil suction chamber 42, and the pressure-regulating valve 2 enters
Hydraulic fluid port 41 connects oil suction chamber 42, and the drain tap of the pressure-regulating valve 2 is stretched into the ejection cavity 43, and the jet pump 3 is set
To put in ejection cavity 43, for the jet pump 3 in the front of drain tap, the inlet port 44 is arranged on the lower end in the front of jet pump 3,
Inlet port 44 connects ejection cavity 43, and inlet port 44 and ejection cavity 43 are perpendicular, and the ejection cavity 43 connects the low side of oil-out 45,
Oil-out 45 and ejection cavity 43 are perpendicular, and the ejection cavity 43 between the inlet port 44 and oil-out 45 is provided with taper tube chamber
46.In addition, being provided with the installation chamber 6 of the pressure-regulating valve 2 of installation in the bottom of oil storage barrel 1, the side of installation chamber 6 is provided with card
Catching groove hole 51, is provided with buckle 52 in the buckle slotted eye 51, and buckle 52 is used for fixation pressure regulating valve 2, ease of assembly, dismounting and more
Change.
During work, fuel oil of the fuel oil out of the entrance oil suction chamber 42 of oil inlet 41, oil suction chamber 42 is controlled by pressure-regulating valve 2
Pipeline inner pressure, and injection pressure is provided, after the pressure relief opening ejection of fuel oil jet pump 3, the top of inlet port 44 and conical pipe
At chamber 46, using rate of flow of fluid is increased and the caused suction action principle to surrounding fluid, in the steady flow of same flow tube
In, caliber attenuate place flow velocity increase and pressure reduce, when pressure is decreased below the pressure of surrounding fluid, around inlet port 44
Fluid is i.e. to inflow at this.The low side of fuel oil direct projection oil-out 45 after taper tube chamber 46, and in the low side face of oil-out 45
The excessive portion of circular arc is provided with to the side of ejection cavity 43, avoids the wall of direct projection oil storage barrel 1 from producing backflow, vortex, increases induction efficiency,
Reduce noise.
Claims (3)
1. a kind of fuel pump injection mechanism, fuel pump includes pump core and oil storage barrel, it is characterised in that is provided with the bottom of oil storage barrel
Injection mechanism, the injection mechanism include pressure-regulating valve, jet pump and injection pipeline,
The injection pipeline includes oil inlet, oil suction chamber, ejection cavity, inlet port, oil-out,
The oil inlet connects oil suction chamber, and pressure-regulating valve is fixed on the side of oil suction chamber, the oil inlet of the pressure-regulating valve
Oil suction chamber is connected, the drain tap of the pressure-regulating valve is stretched into the ejection cavity, and the jet pump is arranged in ejection cavity,
For the jet pump in the front of drain tap, the inlet port is arranged on the lower end in front of jet pump, inlet port connection ejection cavity, inhales
Hydraulic fluid port is perpendicular with ejection cavity, and the low side of the ejection cavity connection oil-out, oil-out is perpendicular with ejection cavity,
Ejection cavity between the inlet port and oil-out is provided with taper tube chamber.
2. fuel pump injection mechanism according to claim 1, it is characterised in that：Oil-out low side towards ejection cavity
Side is provided with the excessive portion of circular arc.
3. fuel pump injection mechanism according to claim 1, it is characterised in that：The pressure of installation is provided with the bottom of oil storage barrel
The installation chamber of force regulating valve, the side for installing chamber are provided with buckle slotted eye, buckle are provided with buckle slotted eye.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720319295.8U CN206903792U (en) | 2017-03-29 | 2017-03-29 | A kind of fuel pump injection mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720319295.8U CN206903792U (en) | 2017-03-29 | 2017-03-29 | A kind of fuel pump injection mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206903792U true CN206903792U (en) | 2018-01-19 |
Family
ID=61293844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720319295.8U Active CN206903792U (en) | 2017-03-29 | 2017-03-29 | A kind of fuel pump injection mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206903792U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876681A (en) * | 2022-04-25 | 2022-08-09 | 一汽奔腾轿车有限公司 | Injection backflow cavity structure for improving noise of fuel pump |
| CN114962093A (en) * | 2022-04-25 | 2022-08-30 | 一汽奔腾轿车有限公司 | Injection valve flow stabilizing cavity integrated structure for improving jet noise of fuel pump |
| CN115288897A (en) * | 2022-09-02 | 2022-11-04 | 重庆万力联兴实业(集团)有限公司 | Prevent concentrated fuel pump of static |
-
2017
- 2017-03-29 CN CN201720319295.8U patent/CN206903792U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876681A (en) * | 2022-04-25 | 2022-08-09 | 一汽奔腾轿车有限公司 | Injection backflow cavity structure for improving noise of fuel pump |
| CN114962093A (en) * | 2022-04-25 | 2022-08-30 | 一汽奔腾轿车有限公司 | Injection valve flow stabilizing cavity integrated structure for improving jet noise of fuel pump |
| CN115288897A (en) * | 2022-09-02 | 2022-11-04 | 重庆万力联兴实业(集团)有限公司 | Prevent concentrated fuel pump of static |
| CN115288897B (en) * | 2022-09-02 | 2024-07-30 | 重庆万力联兴实业(集团)有限公司 | Antistatic concentrated fuel pump |
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