CN204436778U - Variable-displacement piston type fuel supply pump and variable-flow low-pressure oil supply device - Google Patents
Variable-displacement piston type fuel supply pump and variable-flow low-pressure oil supply device Download PDFInfo
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- CN204436778U CN204436778U CN201520066515.1U CN201520066515U CN204436778U CN 204436778 U CN204436778 U CN 204436778U CN 201520066515 U CN201520066515 U CN 201520066515U CN 204436778 U CN204436778 U CN 204436778U
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- variable
- lower cavity
- piston type
- electromagnetic coil
- upper chamber
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- 239000000446 fuel Substances 0.000 title claims abstract description 48
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 13
- 238000002347 injection Methods 0.000 claims abstract description 26
- 239000007924 injection Substances 0.000 claims abstract description 26
- 239000002828 fuel tank Substances 0.000 claims abstract description 20
- 239000000945 filler Substances 0.000 claims abstract description 10
- 239000003921 oil Substances 0.000 claims description 38
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000000295 fuel oil Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 9
- 230000001105 regulatory effect Effects 0.000 abstract description 6
- 230000008569 process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000003134 recirculating effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses a kind of variable-displacement piston type fuel supply pump and variable-flow low-pressure oil supply device, piston type fuel supply pump comprises cylinder body and piston, described cylinder body is provided with filler opening and oil outlet, described piston is made up of upper chamber and lower cavity, the two is set in together and is slidably connected, electromagnetic coil is provided with in described lower cavity, movable core in described electromagnetic coil is connected with the inwall of described upper chamber, is provided with Returnning spring between described upper chamber and the inner chamber of lower cavity.Variable-flow low-pressure oil supply device comprises fuel tank, filter cleaner, oiling valve, piston type fuel supply pump, outlet valve, input pressure sensor, controller, return pressure sensor, connecting rod and bent axle.The utility model can the pump delivery of regulating piston formula oil transportation in real time, and structure is simple, and regulating method is convenient and reliable, fully meets the fuel feeding requirement of injection pump of engine under various operating mode.
Description
Technical field
The utility model relates to the oil supplying device of motor, is specifically related to variable-displacement piston type fuel supply pump and variable-flow low-pressure oil supply device.
Background technique
Fuel oil supply system is the heart of motor, and its performance directly has influence on combustion oil injection, the burning of atomization and motor and discharge.Along with energy shortage and environmental pollution are on the rise, also more and more higher to the requirement of engine fuel supply technology.The low-pressure oil supply device of conventional engines is generally made up of parts such as fuel tank, fuel filter and piston type fuel supply pumps, and piston type fuel supply pump is driven by fuel injection camshaft.When fuel injection camshaft rotates, fuel supply pump piston is reciprocating in the piston cavity of fuel supply pump housing.By the to-and-fro motion of fuel supply pump piston, the Seal cage volume realizing oil transfer pump inside increases and reduces, and by fuel from fuel tank sucking-off, overcomes the resistance of fuel filter, will have the fuel delivery injection pump of engine of certain pressure and flow.Due to the piston type fuel supply pump in conventional engines low-pressure oil supply device, its pump housing and piston structure are all changeless, namely traditional piston type fuel supply pump is metering pump, it is changeless that camshaft turns over one turn of fluid volume that can discharge, therefore at various speeds, the complex working conditions such as the high low-load of motor cannot be met to the demand of fuel delivery.
Through finding the retrieval of prior art document and patent, public announcement of a patent application CN 103629034 A, the low pressure oil transfer pump of patent name Injection Pump, this patented technology provides a kind of low pressure oil transfer pump comprising oil transfer pump outer ring, rotor, blade, cover of feed pump, make oil pump inner chamber have applicable pressure, ensure that fully oil-filled; But this blade oil transfer pump remains a kind of metering pump, oil transportation pump delivery cannot be changed in operation process.
License notification number CN 1811158 B, patent name variable discharge fuel pump, this patented technology provides a kind of variable-displacement high-pressure service pump, can be used to the pressurized fuel supply keeping multiple oil sprayer in common rail fuel combustion system; But the fuel pressure that the fuel pump that this patent relates to provides is higher, and fuel pump has the shell of formation first pump chamber and the second pump chamber in its design, also has the first plunger and the second plunger two plungers.This pump also comprises at least one driver, and this driver operationally engages with at least one in the first and second plungers, thus at least one making in the first plunger and the second plunger moves between the first and second end positions.Complex structure, manufactures difficulty, adds the manufacture cost of pump.
Model utility content
Technical problem to be solved in the utility model: for above-mentioned the deficiencies in the prior art, the recirculating oil quantity of the Injection Pump that provides a kind of and design uniqueness, oil transportation pump delivery can be regulated in real time, reduces and improve fuel delivery efficiency.
The technical solution of the utility model is: a kind of variable-displacement piston type fuel supply pump, comprise cylinder body and piston, described cylinder body is provided with filler opening and oil outlet, described piston is made up of upper chamber and lower cavity, the two is set in together and is slidably connected, be provided with electromagnetic coil in described lower cavity, the movable core in described electromagnetic coil is connected with the inwall of described upper chamber, is provided with Returnning spring between described upper chamber and the inner chamber of lower cavity.
The diameter of described upper chamber is greater than the diameter of described lower cavity, the end of described upper chamber is along the circumferential direction provided with at least two rolling steel balls, the outer cylinder surface corresponding position of described lower cavity is provided with straight-line groove, and described rolling steel balls is arranged in corresponding described straight-line groove and does upper and lower to-and-fro motion.
Described electromagnetic coil is connected with power supply and controller; The external cylindrical surface of described upper chamber coordinates with the internal surface slipper seal of described cylinder body.Described electromagnetic coil is positioned at the center of described lower cavity, and the quantity of described Returnning spring is two or more, and is uniformly distributed along the circumference in described electromagnetic coil surrounding.
A kind of variable-flow low-pressure oil supply device containing the oil transportation of variable-displacement piston type, also comprise fuel tank and Injection Pump, the filler opening of described cylinder body is communicated with described fuel tank by oiling valve, the oil outlet of described cylinder body is communicated with the filler opening of input pressure sensor with described Injection Pump by outlet valve, the fuel oil of certain pressure and flow is provided to described Injection Pump, the return opening of described Injection Pump is connected through the return opening of return pressure sensor with described fuel tank, the unnecessary fluid provided by described Injection Pump flows back to described fuel tank, the lower end of described lower cavity is connected with bent axle by connecting rod, described input pressure sensor, return pressure sensor are connected with controller respectively with electromagnetic coil.Filter cleaner is provided with between described fuel tank and oiling valve.
The beneficial effects of the utility model are:
1, according to the pressure signal of input pressure sensor and return pressure sensor, the utility model judges that oil transfer pump discharge capacity needs increase still to reduce, and then the electric current of electromagnetic coil is adjusted by controller, thus in engine operation process, oil transportation pump delivery can be regulated in real time, under the high and low rotating speed operating mode taking into account motor and high running on the lower load, and reduce the recirculating oil quantity of Injection Pump, improve fuel delivery efficiency.
2, the utility model rolling steel balls is arranged in corresponding straight-line groove and does upper and lower to-and-fro motion, and guidance quality is good, prevents from twisting at movement process middle and upper part cavity opposing lower portions cavity, reduces the damage of Returnning spring and movable core.
3, the utility model electromagnetic coil is positioned at the center of lower cavity, and its surrounding is evenly equipped with Returnning spring, improves stressed uniformity, reduces the active force of upper chamber and inboard wall of cylinder block, extends the working life of cylinder body and upper chamber.
4, be provided with filter cleaner between the utility model fuel tank and oiling valve, effectively can filter fluid, reduce the wearing and tearing to cylinder body and piston of impurity in fluid, reduce the infringement to motor especially.
5, the utility model structure is simple, and regulating method is convenient and reliable, and fully meet the fuel feeding requirement of injection pump of engine under various operating mode, it is applied widely, has good economic benefit after popularization.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Embodiment: see in Fig. 1, figure, 1-fuel tank, 2-filter cleaner, 3-oiling valve, 4-piston type fuel supply pump, 5-outlet valve, 6-input pressure sensor, 7-Injection Pump, 8-controller, 9-return pressure sensor, 10-piston, 11-electromagnetic coil, 12-movable core, 13-Returnning spring, 14-connecting rod, 15-bent axle.In figure, arrow is depicted as fuel delivery direction, and dotted line is control wiring.
Variable-displacement piston type fuel supply pump 4 comprises cylinder body and piston 10, cylinder body is provided with filler opening and oil outlet, piston 10 is made up of upper chamber and lower cavity, the two is set in together and is slidably connected, electromagnetic coil 11 is provided with in lower cavity, movable core 12 in electromagnetic coil 11 is connected with the inwall of upper chamber, is provided with Returnning spring 13 between upper chamber and the inner chamber of lower cavity.
The diameter of upper chamber is greater than the diameter of lower cavity, the end of upper chamber is along the circumferential direction provided with at least two rolling steel balls, the outer cylinder surface corresponding position of lower cavity is provided with straight-line groove, and rolling steel balls is arranged in corresponding described straight-line groove and does upper and lower to-and-fro motion.
Electromagnetic coil 11 is connected with power supply and controller 8; The external cylindrical surface of upper chamber coordinates with the internal surface slipper seal of cylinder body.Electromagnetic coil 11 is positioned at the center of lower cavity, and the quantity of Returnning spring 13 is two or more, and is uniformly distributed along the circumference in electromagnetic coil 11 surrounding.
Variable-flow low-pressure oil supply device also comprises fuel tank 1 and Injection Pump 7, wherein: the filler opening of cylinder body is communicated with fuel tank 1 by oiling valve 3, the oil outlet of cylinder body is communicated with the filler opening of input pressure sensor 6 with Injection Pump 7 by outlet valve 5, the fuel oil of certain pressure and flow is provided to Injection Pump 7, the return opening of Injection Pump 7 is connected through the return opening of return pressure sensor 9 with fuel tank 1, the unnecessary fluid provided by Injection Pump 7 flows back to fuel tank 1, and the lower end of lower cavity is connected with bent axle 15 by connecting rod 14; Input pressure sensor 6, return pressure sensor 9 are connected with controller 8 respectively with electromagnetic coil 11.
As required, between fuel tank 1 and oiling valve 3, be provided with filter cleaner 2, the degree of purity of fluid can be ensured.
Operationally, controller 8 judges whether according to the pressure signal of input pressure sensor 6 and return pressure sensor 9 discharge capacity needing change piston type fuel supply pump 4, and calculate required electric current, control the size of electromagnetic coil 11 electromagnetic force, piston 10 can shrink or expand under the force action of the spring force of electromagnetic force and Returnning spring 13, make the maximum Seal cage volume (piston runs to volume during lowermost end) of cylinder interior during oil-feed become large or reduce, thus change oil drain quantity.
When bent axle 15 rotates, piston 10 is reciprocating in cylinder body.When needing the discharge capacity increasing piston type fuel supply pump 4, in the descending process of piston 10, electromagnetic coil 11 is energized, the effect that piston 10 overcomes Returnning spring 13 under the effect of electromagnetic force is shunk, maximum sealed volume in piston cavity is increased, degree of vacuum increases, and the oil mass of suction increases, and the discharge capacity of piston type fuel supply pump 4 becomes large.
When needing the discharge capacity reducing piston type fuel supply pump 4, in the descending process of piston 10, be reduced by the electric current of electromagnetic coil 11, electromagnetic force reduces, and under its spring force force action with Returnning spring 13, the contour projector of piston 10 reduces, maximum sealed volume in piston cavity is reduced, degree of vacuum reduces, and the oil mass of suction reduces, and the discharge capacity of piston type fuel supply pump 4 diminishes.
When needs return to piston type fuel supply pump 4 original discharge capacity, electromagnetic coil 11 power-off, electromagnetic force disappears, and piston 10 resets completely under the effect of Returnning spring 13, and the oil mass of suction returns to initial value, and the discharge capacity of piston type fuel supply pump 4 returns to original discharge capacity.
Above-mentioned three kinds of operating modes, in piston 10 up stroke, electromagnetic coil 11 all power-off, piston 10 resets completely, the oil mass of suction is all discharged.The utility model can in engine operation process the discharge capacity of real-time regulating piston formula oil transfer pump 4, take into account the high and low rotating speed operating mode of motor and high running on the lower load, and the recirculating oil quantity of Injection Pump 7 can be reduced, improve fuel delivery efficiency.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (6)
1. a variable-displacement piston type fuel supply pump, comprise cylinder body and piston, described cylinder body is provided with filler opening and oil outlet, it is characterized in that: described piston is made up of upper chamber and lower cavity, the two is set in together and is slidably connected, be provided with electromagnetic coil in described lower cavity, the movable core in described electromagnetic coil is connected with the inwall of described upper chamber, is provided with Returnning spring between described upper chamber and the inner chamber of lower cavity.
2. variable-displacement piston type fuel supply pump according to claim 1, it is characterized in that: the diameter of described upper chamber is greater than the diameter of described lower cavity, the end of described upper chamber is along the circumferential direction provided with at least two rolling steel balls, the outer cylinder surface corresponding position of described lower cavity is provided with straight-line groove, and described rolling steel balls is arranged in corresponding described straight-line groove and does upper and lower to-and-fro motion.
3. variable-displacement piston type fuel supply pump according to claim 1, is characterized in that: described electromagnetic coil is connected with power supply and controller; The external cylindrical surface of described upper chamber coordinates with the internal surface slipper seal of described cylinder body.
4. variable-displacement piston type fuel supply pump according to claim 1, is characterized in that: described electromagnetic coil is positioned at the center of described lower cavity, the quantity of described Returnning spring is two or more, and is uniformly distributed along the circumference in described electromagnetic coil surrounding.
5. the variable-flow low-pressure oil supply device containing variable-displacement piston type fuel supply pump described in any one of claim 1-4, also comprise fuel tank and Injection Pump, it is characterized in that: the filler opening of described cylinder body is communicated with described fuel tank by oiling valve, the oil outlet of described cylinder body is communicated with the filler opening of input pressure sensor with described Injection Pump by outlet valve, the fuel oil of certain pressure and flow is provided to described Injection Pump, the return opening of described Injection Pump is connected through the return opening of return pressure sensor with described fuel tank, the unnecessary fluid provided by described Injection Pump flows back to described fuel tank, the lower end of described lower cavity is connected with bent axle by connecting rod, described input pressure sensor, return pressure sensor are connected with controller respectively with electromagnetic coil.
6. variable-flow low-pressure oil supply device according to claim 5, is characterized in that: be provided with filter cleaner between described fuel tank and oiling valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520066515.1U CN204436778U (en) | 2015-01-30 | 2015-01-30 | Variable-displacement piston type fuel supply pump and variable-flow low-pressure oil supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520066515.1U CN204436778U (en) | 2015-01-30 | 2015-01-30 | Variable-displacement piston type fuel supply pump and variable-flow low-pressure oil supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204436778U true CN204436778U (en) | 2015-07-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520066515.1U Withdrawn - After Issue CN204436778U (en) | 2015-01-30 | 2015-01-30 | Variable-displacement piston type fuel supply pump and variable-flow low-pressure oil supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204436778U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612962A (en) * | 2015-01-30 | 2015-05-13 | 郑州航空工业管理学院 | Variable-displacement piston oil delivery pump and variable-flow low-pressure oil supplying device |
-
2015
- 2015-01-30 CN CN201520066515.1U patent/CN204436778U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612962A (en) * | 2015-01-30 | 2015-05-13 | 郑州航空工业管理学院 | Variable-displacement piston oil delivery pump and variable-flow low-pressure oil supplying device |
| CN104612962B (en) * | 2015-01-30 | 2017-01-25 | 郑州航空工业管理学院 | Variable-displacement piston oil delivery pump and variable-flow low-pressure oil supplying device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150701 Effective date of abandoning: 20161109 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |