CN1299926A - Moving-coil hydraulic ejector pump - Google Patents
Moving-coil hydraulic ejector pump Download PDFInfo
- Publication number
- CN1299926A CN1299926A CN 99120625 CN99120625A CN1299926A CN 1299926 A CN1299926 A CN 1299926A CN 99120625 CN99120625 CN 99120625 CN 99120625 A CN99120625 A CN 99120625A CN 1299926 A CN1299926 A CN 1299926A
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- China
- Prior art keywords
- moving
- coil
- oil
- fuel
- fuel injection
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- Fuel-Injection Apparatus (AREA)
Abstract
The moving-coil hydraulic jet pump comprises pump body, fuel-feeding electromagnetic valve, fuel-spraying electromagnetic valve and controller, the pump comprises shell, magnetic steel, moving coil and elastic piece. It adopts moving coil electromagnetic mechanism as power source and integrates the processes of fuel transmission, formation of fuel-spraying pressure and fuel spray nozzle into one body, so that its volume is small, structure is simple and reliable and production cost is low.
Description
The present invention relates to a kind of fuel of internal combustion engine jet pump, particularly a kind of moving-coil hydraulic ejector pump.
Existing internal combustion engine injection device is made up of three parts: (1) fuel pump-required pressure of maintenance fuel injection; (2) fuel oil manostat-constant ejecting system fuel pressure; (3) oil nozzle-adjusting nozzle ejection time and fuel injection quantity keep accurate linear relationship.It is a closed loop control process that the fuel pressure that obvious its fuel pump provides comes constant ejecting system fuel pressure with manostat, it comprise pressure data collection, with the continuous circulation of comparison, error Control and the feedback of Reference data, so the process of constant voltage actual be the closed loop control process of the electromechanical integration of a complexity.So its complex structure and price are high especially, therefore be not easy to popularize.
The purpose of this invention is to provide a kind of moving-coil hydraulic ejector pump that adopts the moving coil electromagnetic structure as pressure source, its collection transport of fuel, the formation of injection pressure, oil nozzle are one, and therefore, volume is little, simple in structure.
The object of the present invention is achieved like this: a kind of moving-coil hydraulic ejector pump is characterized in that it is made of the pump housing, oil-feed solenoid valve, solenoid fuel injection valve and controller; The pump housing is to be made of housing, magnet steel, moving-coil and spring sheet; Spring sheet is separated into oil pocket and magnetic force chamber with the cavity of the pump housing, oil pocket is connected with solenoid fuel injection valve with the oil-feed solenoid valve respectively, magnet steel is arranged in the magnetic force chamber, and the moving-coil that is connected with spring sheet is arranged in the magnetic pole groove of magnet steel, and controller is connected with oil-feed solenoid valve, solenoid fuel injection valve and moving-coil.
Working principle of the present invention is: pass to electric current by controller to moving-coil, according to Ampere law: establish and be full of oil and moving-coil in the oil pocket in addition during forward current, the resistance that the spring sheet moving-coil overcomes is moved right by original position, forms negative pressure in oil pocket, electric current is big more, and negative pressure is just big more.Open the oil-feed solenoid valve and change and open the solenoid valve endurance, under the effect of negative pressure, oil pocket just can suck specific fuel oil from fuel tank.The flow direction of closing the oil-feed solenoid valve this moment, changing electric current is for negative, and oil pocket becomes positive pressure by negative pressure, and electric current is big more, and positive pressure is just big more.Keep electric current constant, through after certain time-delay, oil pocket has been set up pressure stable, as the amount of fuel in the oil pocket much larger than fuel injection quantity, the endurance that changes the unlatching solenoid fuel injection valve so just can obtain corresponding fuel injection quantity on nozzle, fuel oil passes through nozzle with certain pressure, atomize under the effect of nozzle, to open the solenoid fuel injection valve time be linear relationship with the amount of fuel that has atomized thereby make, and finally realizes EFI.
The present invention compared with prior art, its remarkable advantage is: this injection apparatus adopts the moving coil electromagnetic structure as pressure source, its collection fuel conveying, the formation of injection pressure, oil nozzle are one, so its volume is little, simple in structure.Because it is equivalent to fuel oil oil pump, fuel oil manostat, oil nozzle are made in the cylindrical body that volume is approximately diameter 25MM, long 80MM, so that the structure of electric-jet type motor oversimplify greatly, so it have simple and reliable, cost is low, the advantage popularized easily.
The invention will be further described below in conjunction with drawings and Examples:
Accompanying drawing is a structural representation of the present invention.
Embodiment: present embodiment is the application of moving-coil hydraulic ejector pump in 125CC single cylinder petrol engine.As shown in the figure, this moving-coil hydraulic ejector pump comprises the pump housing 1, oil-feed solenoid valve 2, solenoid fuel injection valve 3 and controller 4; The pump housing 1 comprises housing 1.1, magnet steel 1.2, moving-coil 1.3 and spring sheet 1.4.Housing 1.1 adopts aluminum alloy to manufacture, wall thickness is 3MM, diameter is 25MM, length is 80MM, is the salable structure of cylindrical body, the spring sheet 1.4 of burn-oning of half place in cavity, its thickness is 0.5MM, diameter is 22MM, is 19MM place three wave-like types that radius is 1MM that are shaped at diameter, makes the diameter can displacement after stressed less than the part of 17.5MM.Be connected with moving-coil 1.3 on the right side of spring sheet 1.4, this moving-coil 1.3 is that 0.5MM, diameter are that the circle of 17.5MM, long 22MM and the high strength enamelled wire of last 20 circle 1MM diameters thereof are formed by thickness.After the dead in line of the axis of moving-coil 1.3 and spring sheet 1.4, be welded as a whole.Magnet steel 1.2 is with containing the diameter 22MM that rare earth elements is made, the permanent magnet of long 30MM, it is 2MM that a thickness is arranged at diameter 17.5 places, the degree of depth is the circular groove of 25MM, can make moving-coil 1.3 insert moving freely of also not rubbing, on spring sheet 1.4 left sides are oil pockets, two pipelines are arranged above it, negative pressure with oil-feed solenoid valve 2 or machinery is opened one-way valve and is connected, another pipeline is opened one-way valve with the malleation of solenoid fuel injection valve 3 or machinery and is connected, fuel tank 5 is connected with oil-feed solenoid valve 2 the other end pipelines, and nozzle 6 is connected with the other end that the malleation of solenoid fuel injection valve 3 or machinery is opened one-way valve.The tach signal that controller 4 provides according to the position signal and the engine rotation speed sensor of throttle position sensor, the position signal that crankshaft position sensor provides engine piston are extrapolated load and other situation, the i.e. operating mode of present engine.Under current working, controller 4 will obtain an electric current I and a time T to the oil mass correspondence according to the data of inner ROM storage, it is the time that injection pressure and solenoid fuel injection valve are opened, thereby reach motor and under corresponding operating mode, provide corresponding oil mass, make the efficient and the pollution of petrol engine be in the optimum state, so corresponding must there be the oil pocket oil suction of a moving-coil hydraulic ejector pump to stablize negative pressure (electric current I 1) for oil mass and oil-feed solenoid valve 4 is opened time T 1, stablize positive pressure (electric current I 2) with the oil pocket oil spout and solenoid fuel injection valve 3 is opened time T 2, whenever circle at motor, ECU can be from multiple said process, remain the optimum state of motor under every index, thereby realize petrolic EFIization.
Claims (1)
1, a kind of moving-coil hydraulic ejector pump is characterized in that it is made of the pump housing [1], oil-feed solenoid valve [2], solenoid fuel injection valve [3] and controller [4]; The pump housing [1] is to be made of housing [1.1], magnet steel [1.2], moving-coil [1.3] and spring sheet [1.4]; Spring sheet [1.4] is separated into oil pocket and magnetic force chamber with the cavity of the pump housing [1], oil pocket is connected with solenoid fuel injection valve [3] with oil-feed solenoid valve [2] respectively, magnet steel [1.2] is arranged in the magnetic force chamber, the moving-coil [1.3] that is connected with spring sheet [1.4] is arranged in the magnetic pole groove of magnet steel [1.2], and controller [4] is connected with oil-feed solenoid valve [2], solenoid fuel injection valve [3] and moving-coil [1.3].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99120625 CN1299926A (en) | 1999-12-16 | 1999-12-16 | Moving-coil hydraulic ejector pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99120625 CN1299926A (en) | 1999-12-16 | 1999-12-16 | Moving-coil hydraulic ejector pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1299926A true CN1299926A (en) | 2001-06-20 |
Family
ID=5281592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99120625 Pending CN1299926A (en) | 1999-12-16 | 1999-12-16 | Moving-coil hydraulic ejector pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1299926A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102282355B (en) * | 2009-01-13 | 2015-04-01 | 罗伯特·博世有限公司 | Fuel injection device |
-
1999
- 1999-12-16 CN CN 99120625 patent/CN1299926A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102282355B (en) * | 2009-01-13 | 2015-04-01 | 罗伯特·博世有限公司 | Fuel injection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |