CN201486712U - Reciprocating pressure-adjustable oil pump - Google Patents
Reciprocating pressure-adjustable oil pump Download PDFInfo
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- CN201486712U CN201486712U CN2009201407787U CN200920140778U CN201486712U CN 201486712 U CN201486712 U CN 201486712U CN 2009201407787 U CN2009201407787 U CN 2009201407787U CN 200920140778 U CN200920140778 U CN 200920140778U CN 201486712 U CN201486712 U CN 201486712U
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Abstract
The utility model relates to a reciprocating pressure-adjustable oil pump used for providing pressure fuel oil in the fuel oil injection system of a gasoline-fueled internal combustion engine. Most oil pumps used for providing pressure fuel oil in the fuel oil injection system of the existing common gasoline-fueled internal combustion engine adopt the structure that a DC motor is used to drive a rotor pump, and have the defects of large power consumption, large volume and short service life. The reciprocating pressure-adjustable oil pump mainly comprises an oil feeding device, an oil driving device and an oil draining device. An electronic system is used to control an electromagnetic coil to produce electromagnetic attraction force. A reciprocating plunger is driven. Oil is absorbed in, squeezed and drained out through the reciprocating movement of the plunger. The utility model has the advantages that through the pushing force produced by the return of the spring, the oil pressure produced by the plunger is stable; and by using the oil inlet cavity for exhausting bubbles and the oil inlet valve arranged at the position of the middle height of the oil inlet cavity, the oil filled with bubbles can be stably pressurized.
Description
Affiliated technical field
The utility model relates to a kind of reciprocating type adjustable pressure oil pump that the gasoline engine fuel injection system provides the pressure fuel oil that is used for.
Background technique
At present, provide the oil pump of pressure fuel oil in the common gasoline engine fuel injection system, the rotary pump that adopts electric rotating machine to drive mostly is characterized in driving rotor pump by direct current generator; Its shortcoming is that power consumption is big, volume is big, the life-span is short.Put-put will use such rotary pump, just must improve magnetogenerator, use high capacity cell instead to strengthen electric energy output to satisfy the needs of rotary pump, also to improve so that rotary pump is built in the fuel tank original narrow and small fuel tank, make and to change more place when put-put is used electric injection system, increased cost for this reason.Since rotary pump motor no matter run up or idle running in, all need to keep identical rotational speed and oil pressure to stablize, make that the life-span of rotary pump is shorter.In sum, if be transplanted on the small generator of use displacement gasoline engine, dinghy, snow breaker, the motorcycle, will occur machine (car) type is changed the deficiency big, that cost is high, reliability is low at the ripe rotary pump that uses on the multi-cylinder automobile.
Summary of the invention
The defective that the power consumption that is come out when existing rotary pump is applied to displacement gasoline engine is big, volume is big in order to overcome, the life-span is short, the utility model provides a kind of reciprocating type adjustable pressure oil pump, and not only power consumption is extremely low, volume is little, the life-span is long but also with low cost for this reciprocating type adjustable pressure pump.Use this reciprocating type adjustable pressure oil pump, the put-put of former use Carburetor can not need to change magnetogenerator, even 4 grades of AC magnetism motors of similar CG125 type motorcycle, the battery of 4 ampere-hours also are enough to allow this reciprocating type adjustable pressure oil pump obtain enough electric energy of proper functioning; This reciprocating type adjustable pressure oil pump volume has only 1/7 of common rotary pump, is used to use small generator, dinghy, snow breaker, the motorcycle of displacement gasoline engine, does not need fully original fuel tank is made any change; This reciprocating type adjustable pressure oil pump is realized the oil plant supercharging by the straight reciprocating motion of plunger, can be according to the reciprocating frequency of height synchronous change plunger of engine speed, rather than as rotary pump, must keep the running of higher speed, therefore this reciprocating type adjustable pressure oil pump operating life is very long, even motor is scrapped, this pump also still can continue to use.
The technological scheme that the correlation technique problem of the utility model solution rotary pump is adopted is: rely on electronics to control electromagnetic coil and produce electromagnetic attraction, and driving a reciprocating plunger, the to-and-fro motion by plunger sucks oil plant, extruding is discharged to oil plant.The utility model mainly comprises an oil plant inletting device, an oil plant drive unit, an oil plant discharger; Discharge from described oil plant discharger after the effect of the oil passing oil plant drive unit that enters from described oil plant inletting device.The oil plant inletting device is the valve of a unidirectional oil-feed, is made of valve block, oil-feed valve seat.The oil plant discharger is a unidirectional fuel-displaced valve, is made of ceramic ball, fuel tap spring, valve seat.Described oil plant drive unit mainly comprises a coil, a circular plunger, and one is held the reciprocating cylinder body of plunger, a spring that is used for plunger return, the spring seat of a fixing spring, the coil housing of encapsulated coil, pumping cylinder and a spring seat constitutes.Pumping cylinder, spring seat, the coaxial installation of spring, plunger is to-and-fro motion in pumping cylinder, coil is coaxial to be installed in outside the pumping cylinder, leave space (magnetic gap) between pumping cylinder and the spring pedestal, the magnetic field that makes coil electricity produce can be concentrated at magnetic gap, and constitutes the closed magnetic line of force of pumping cylinder, plunger, spring pedestal, coil housing, and very strong magneto drive plunger pressure spring motion can be arranged when making coil electricity, this moment, the oil plant inletting device was opened, and oil plant enters in the pumping cylinder chamber of plunger top; Behind coil blackout, electromagnetic attraction disappears, and plunger is subjected to the promotion of spring to do motion in the other direction, this moment, the oil plant inletting device cut out, oil plant is extruded in the pumping cylinder chamber of plunger top, oil pressure rises, and when oil pressure during greater than the closing pressure of oil plant discharger, oil plant is discharged from the oil plant discharger.With PWM voltage drive coil, make that plunger can be according to fuel injection system to the demand of fuel flow and to-and-fro motion by electronics, thereby the oil plant of convenient pressure is provided for the sparger of fuel injection system.
Described oil plant inletting device, considered especially the discharge of bubble is handled: the filler opening of the pump housing below, the exhaust bubble mouthful up, the oil plant suction port of oil plant inletting device is in the medium height position of filler opening, exhaust bubble mouth, the filler opening of the pump housing between the exhaust bubble mouthful be one in order to hold the oil-feed cavity of oil plant, bubble, such structure, make that because high ambient temperature causes the oil plant formed bubble that seethes with excitement major part directly mouthful is discharged from the exhaust bubble; Small part is by the bubble of plunger suction cylinder body, and when plunger was subjected to the promotion of spring just to begin to carry out compressional movement, because valve block is not closed at once, these a small amount of bubbles that are inhaled into can be discharged from the oil plant suction port of oil plant inletting device.
When plunger was subjected to the motion of electromagnetic attraction pressure spring, the oil plant in the plunger extrusion spring base made this part oil plant flow to coil by the spill port of spring seat, and was discharged to the oil-feed cavity through coil from the through hole on the coil housing; Such oil circulation has been taken away the heat that resistance produced of friction of cylinder body internal cause or coil
In the described oil plant drive unit, the elastic force of spring, the area of plunger is all fixed, as long as the PWM voltage that electronics drives guarantees that the stroke of plunger pressure spring motion is identical, the oil plant drive unit the maximum fuel pressure that can produce be exactly stable.By using the piston spring of different-stiffness characteristic, just can change maximum fuel pressure.
The beneficial effects of the utility model are, by drive reciprocating plunger by single electromagnetic coil and spring, be used to discharge bubble the oil-feed cavity, be positioned at the oiling valve of oil-feed cavity medium height position, make that the utility model volume is little, the oil plant of pressure stability can be provided, and have the ability of good heat-resistance, exhaust bubble.Owing to adopt the pwm pulse of the sparger working pulse that is synchronized with fuel injection system to drive electromagnetic coil, the feasible low characteristics of power consumption that the utlity model has.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model embodiment's a side view.
Fig. 2 is the utility model embodiment's an A--A sectional view.
Fig. 3 is the utility model embodiment's a D--D sectional view.
Fig. 4 is the plan view of oil-feed valve block of the present utility model.
Among the figure: 1. pumping cylinder, 2. plunger, 3. oil-feed valve block, 4. coil rack, 5. coil housing, 6. spring pedestal, 7. pump seat, 8. pump seat O-ring seal, 9. ceramic ball, 10. oil outlet, 11. pump cases, 12. oil outlet valve springs, 13. piston spring, 14. spring place kick, 15. pumping cylinder O-ring seals, 16. the oil-feed cavity, 17. go out oil groove, 18. filler openings, 19. exhaust bubble mouth, 20. oiling valve valve seats, 21. oil-feed valve ports.
Embodiment
The oil plant inletting device is made of pump seat (7), oil-feed valve port (21), oil-feed valve block (3), oiling valve valve seat (20).When plunger (2) during in the motion of the effect lower compression piston spring (13) of electromagnetic attraction, volume between oil-feed valve block (3) and plunger (2) top increases, produces negative pressure, oil-feed valve block (3) is left oil-feed valve port (21) on the pump seat (7) by this negative-pressure adsorption, and behind the oiling valve valve seat (20) that is adsorbed on the pumping cylinder (1), just no longer continue to follow plunger (2) motion, oil-feed valve port this moment (21) is opened, and oil plant enters the cylinder body at oil-feed valve block (3) and plunger (2) top from the slit at oil-feed valve block (3) edge.
The oil plant discharger is made of the go out oil groove (17), ceramic ball (9), oil outlet valve spring (12), oil outlet (10) around oil-feed valve port (21), goes out oil groove (17) and is communicated to ceramic ball (9).During the pressure of the high pressure fuel that the oil plant pressure in going out oil groove (17) is connect greater than oil outlet valve spring (12) and oil outlet (10), ball valve is opened.The oil plant discharger is a unidirectional fuel-displaced valve.
The oil plant drive unit is made of coil rack (4) and coil, plunger (2), pumping cylinder (1), piston spring (13), spring pedestal (6), coil housing (5) on skeleton.Pumping cylinder (1), spring pedestal (6), the coaxial installation of piston spring (13), plunger (2) to-and-fro motion in pumping cylinder (1), coil rack (4) and coil are coaxial to be installed in outside the pumping cylinder (1), leave space (magnetic gap) between pumping cylinder (1) and the spring pedestal (6), the magnetic field that makes coil electricity produce can be concentrated at magnetic gap, and by pumping cylinder (1), plunger (2), spring pedestal (6), coil housing (5) constitutes the closed magnetic line of force, very strong magneto drive plunger (2) compression plunger spring (13) motion can be arranged when making coil electricity, this moment, the oil plant inletting device was opened, and oil plant enters in the cylinder body on plunger (2) top; Behind coil blackout, electromagnetic attraction disappears, plunger (2) is subjected to the promotion of piston spring (13) to do reversing motion, this moment, the oil plant inletting device cut out, oil plant is extruded in the cylinder body on plunger (2) top, oil pressure rises, when oil pressure during greater than the closing pressure of oil plant discharger, oil passing goes out oil groove (17) around oil-feed valve port (21), discharges from the oil plant discharger.Have the piston spring (13) of different elastic force by use, can change the size of oil pressure.
Specially designed bubble is handled structure, is made of filler opening (18), oil-feed cavity (16), exhaust bubble mouthful (19), described oil plant inletting device.In Fig. 2, filler opening (18) below, exhaust bubble mouthful (19) up, the oil-feed valve port (21) of oil plant inletting device is in the medium height position of filler opening (18), exhaust bubble mouthful (19), and filler opening (18) is an oil-feed cavity (16) that is used to hold oil plant, bubble between exhaust bubble mouthful (19).When cause the oil plant boiling to form a large amount of bubbles owing to reasons such as high temperature, atmospheric pressure reductions, most of bubble directly vertical lifting is discharged from exhaust bubble mouthful (19); Small part is sucked the bubble of cylinder body (1) by plunger (2), when plunger (2) is promoted by piston spring (13), because oil-feed valve block (3) is not closed at once, these a small amount of bubbles that are inhaled into can be discharged from the oil-feed valve port (21) of oil plant inletting device, then outside exhaust bubble mouthful (19) excavationg pump.
Pump case (11) encapsulates entire pump, and seals by pump seat O-ring seal (8), pumping cylinder O-ring seal (15), and spring place kick (14) is used for the retaining spring the other end.
Course of action embodiment illustrated in fig. 3 is as follows:
By electronics PWM voltage drive coil.When plunger (2) during in the motion of the effect lower compression piston spring (13) of electromagnetic attraction, volume between oil-feed valve block (3) and plunger (2) top increases, produces negative pressure, oil-feed valve block (3) is left the oil-feed valve port (21) of pump seat (7) by this negative-pressure adsorption, and behind the oil-feed valve seat (20) that is adsorbed on the pumping cylinder (1), just no longer continue to follow plunger (2) motion, oil-feed valve port this moment (21) is opened, and oil plant enters the cylinder body at oil-feed valve block (3) and plunger (2) top from the slit at oil-feed valve block (3) edge.Behind coil blackout, electromagnetic attraction disappears, and plunger (2) is subjected to the promotion of piston spring (13) to do reversing motion, and the volume between oil-feed valve block (3) and plunger (2) top reduces at this moment, oil plant pressure increases, and a part of bubble that is inhaled into is discharged from oil-feed valve port (21); Further increase along with pressure, oil-feed valve block (3) leaves the oil-feed valve seat (20) on pumping cylinder (1) and closes oil-feed valve port (21), this moment oil plant in the cylinder body on plunger (2) top further be extruded, oil pressure continues to rise, during the pressure of the high pressure oil plant that is connected with oil outlet (10) greater than oil outlet valve spring (12) when oil pressure, ball valve is opened, the high pressure oil passing on plunger (2) top around oil-feed valve port (21) go out oil groove (17), through ceramic ball (9), be discharged to high-pressure oil pipe from oil outlet (10).
When plunger (2) is subjected to electromagnetic attraction compression plunger spring (13) motion, oil plant in the spring pedestal (6) is pushed, the spill port that makes oil plant pass through spring pedestal (6) is extruded to coil rack (4), and is discharged to oil-feed cavity (16) through coil from the through hole on the coil housing (5); Such oil circulation has been taken away the heat that resistance caused of pumping cylinder (1) because of friction or coil.
Because plunger (2) is very short to the compression stroke of piston spring (13), add and use the piston spring (13) that becomes rigidity, be linear relationship near level at the load of compression stroke inner plunger spring (13) and amount of deformation, therefore the elastic force at compression stroke inner plunger spring (13) is stable; The sectional area of plunger (2) is changeless simultaneously, therefore as long as the PWM voltage that electronics drives guarantees that the stroke of plunger (2) compression plunger spring (13) motion is identical, plunger (2) is enough little with the matching gap of pumping cylinder (1), so plunger (2) be subjected to the promotion of piston spring (13) do reversing motion the maximum fuel pressure that can produce be exactly stable.
Claims (2)
1. a reciprocating type adjustable pressure oil pump mainly is made of oiling valve, pumping cylinder (1), plunger (2), piston spring (13), spring pedestal (6), coil, outlet valve, exhaust bubble mouthful (19); Oiling valve comprises oil-feed valve port (21), oil-feed valve block (3), oiling valve valve seat (20); Outlet valve comprises oil groove (17), ceramic ball (9), oil outlet valve spring (12), oil outlet (10); It is characterized in that: oiling valve valve seat (20) and pumping cylinder (1) are integrated, and the oil groove of going out (17) are arranged around oil-feed valve port (21) and be communicated to outlet valve, and oil-feed valve port (21) is positioned at the medium height position of oil-feed cavity (16).
2. reciprocating type adjustable pressure oil pump according to claim 1, it is characterized in that: just be in compressed state after the piston spring (13) of change rigidity is packed between plunger (2) and the spring pedestal (6), the movement travel of plunger (2) is the working stroke of piston spring (13) just.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201407787U CN201486712U (en) | 2009-04-27 | 2009-04-27 | Reciprocating pressure-adjustable oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201407787U CN201486712U (en) | 2009-04-27 | 2009-04-27 | Reciprocating pressure-adjustable oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201486712U true CN201486712U (en) | 2010-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201407787U Expired - Fee Related CN201486712U (en) | 2009-04-27 | 2009-04-27 | Reciprocating pressure-adjustable oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201486712U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11273715B1 (en) * | 2018-11-19 | 2022-03-15 | Alan Vordermeier | Charging system for battery powered electric vehicles |
-
2009
- 2009-04-27 CN CN2009201407787U patent/CN201486712U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11273715B1 (en) * | 2018-11-19 | 2022-03-15 | Alan Vordermeier | Charging system for battery powered electric vehicles |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Fu Gang Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20160427 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |