CN105351129A - Normally-closed type heavy-oil single-valve electronic unit pump - Google Patents
Normally-closed type heavy-oil single-valve electronic unit pump Download PDFInfo
- Publication number
- CN105351129A CN105351129A CN201510829398.4A CN201510829398A CN105351129A CN 105351129 A CN105351129 A CN 105351129A CN 201510829398 A CN201510829398 A CN 201510829398A CN 105351129 A CN105351129 A CN 105351129A
- Authority
- CN
- China
- Prior art keywords
- valve
- oil
- plunger
- spring
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000295 fuel oil Substances 0.000 title claims abstract description 75
- 239000003921 oil Substances 0.000 claims abstract description 150
- 239000000446 fuel Substances 0.000 claims abstract description 50
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 230000006835 compression Effects 0.000 claims description 31
- 238000007906 compression Methods 0.000 claims description 31
- 230000008878 coupling Effects 0.000 claims description 20
- 238000010168 coupling process Methods 0.000 claims description 20
- 238000005859 coupling reaction Methods 0.000 claims description 20
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- 230000003068 static effect Effects 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000010687 lubricating oil Substances 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 230000002153 concerted effect Effects 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/04—Pumps peculiar thereto
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
- F02M59/366—Valves being actuated electrically
- F02M59/368—Pump inlet valves being closed when actuated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention provides a normally-closed type heavy-oil single-valve electronic unit pump which comprises a rolling wheel plunger, a fuel control valve and an oil outlet valve. The rolling wheel plunger comprises a drive cam, a rolling wheel, an oil pumping plunger, a plunger shell, a plunger spring seat, a plunger rest spring, a gear ring, a gear rod and a pump body. The fuel control valve comprises an electromagnetic valve body, a cooling oil way, a coil, an electromagnet static iron core, an armature, a electromagnetic valve rod, a cushion block, an isolation block, a connection sleeve, an electromagnetic valve spring, an oil drain cone valve, an oil drain valve rod, an oil drain valve spring and a cover plate. According to the normally-closed type heavy-oil single-valve electronic unit pump, it is avoided that heavy oil at the extremely high temperature makes contact with a electromagnet and the armature of the electromagnet valve body in the oil drain process through the isolation block, it is guaranteed that an electromagnetic valve is not expanded due to heat and works safely and reliably; the cooling oil way on the upper portion of the electromagnetic valve body cools the interior of the electromagnetic valve body, and impact on and vibration of the armature are lowered, so that the working stability of the electromagnetic valve is improved, the reliability of the electronic unit pump is improved, and the working stability of an engine is improved.
Description
Technical field
The present invention relates to a kind of monoblock pump, particularly relate to a kind of Normally closed type heavy oil single valve electronically controlled unit pump, belong to engine electric-controlled injection system field.
Background technique
In conventional art, high-power heavy oil diesel engine peculiar to vessel generally adopts mechanical type injection system.But because its control accuracy is lower, respond slower shortcoming, higher control overflow can not be met, thus people cannot be met to the Economy of diesel engine and the requirements at the higher level of discharging proposition.In recent years, diesel electric-controlled oil-fired system becomes the Main Means solving engine problem.Electronically controlled unit pump is a kind of important technological means, and it is a kind of time-based control fuel injection system that can meet motor Abgasgesetz and cost-effectiveness requirement, has that injection pressure is high, injection timing and a flexible feature such as adjustable of fuel injection quantity.
Tradition electronically controlled unit pump adopts roller to promote plunger pressurization fuel oil, and normally open solenoid valve controls the mode of fuel feed and draining.When normally open solenoid valve does not power on, draining oil circuit is in normally open, and the fuel oil in high pressure oil pump flows back to fuel tank by draining oil circuit; After normally open solenoid valve powers on, close draining oil circuit by electromagnetic force, the fuel oil after plunger pressurization flow to oil sprayer through solenoid valve.But common open type electronically controlled unit pump exists following shortcoming: the first, when the fault solenoid valves such as motor generation power down cannot power on, high pressure oil pump draining oil circuit is in normally open, and high pressure oil pump can not be met an urgent need fuel feeding; The second, when solenoid valve stuck in off position time, in valve, oil pressure can constantly raise, and causes harmful effect, cause other hydraulic pressure installation such as oil sprayer to be damaged to solenoid valve and oil sprayer; 3rd, solenoid valve break down but still can fuel feeding time, electronically controlled unit pump cannot complete the adjustment to fuel feeding moment and fuel delivery.In a word, traditional automatically controlled high pressure oil pump poor stability, does not possess the ability of fault being made to emergency reaction, cannot meet the requirement of engine operation stability, Security.And the automatically controlled unit-pump system of above-mentioned tradition can not be applied directly in the middle of heavy oil diesel engine: due to when solenoid valve is not energized, understand some from the fuel oil of control chamber earial drainage during draining and flow through solenoid valve, but viscosity is larger during heavy oil normal temperature, there is corrosivity, need before work to heat it, the heavy oil that temperature is higher can make armature and electromagnet expanded by heating when contacting solenoid valve, causes solenoid valve cisco unity malfunction.
Summary of the invention
The object of the invention is the Normally closed type single valve electronically controlled unit pump providing a kind of heavy oil diesel engine, have flexibly fast, control accurately, advantage that Security is high, simultaneously, the electromagnet of High Temperature and Heavy Oil and solenoid valve, armature are kept apart, ensure the work that solenoid valve is safe and reliable, and cooling oil path is introduced in electromagnetic valve body, increase the stability of electromagnetic valve work.
The object of the present invention is achieved like this comprises roller plunger, Normally closed type heavy oil fuel regulator valve and outlet valve three part, roller plunger comprises driving cam, roller, pump oil piston, the pump housing, piston spring seat, plunger return spring, plunger housing, gear ring, ratch, roller is arranged on the lower end of plunger housing, driving cam coordinates with roller, piston spring is enclosed within outside plunger, the lower end of piston spring to be positioned in plunger housing and to withstand on spring seat, the upper end of piston spring withstands on pump housing lower end, the top of pump oil piston is positioned at the pump housing, bottom is positioned at plunger housing, plunger cavity is formed between pump oil piston and the inwall of the pump housing, its upper end sidewall is arranged the spiral chute controlling spill port opening and closing, enclosure interior is provided with ratch, the gear ring matched with ratch is installed outside plunger bushing, in the pump housing, oil inlet hole is set respectively, spill port and the first oil circuit, oil inlet hole is connected with plunger cavity, described Normally closed type heavy oil fuel regulator valve comprises electromagnetic valve body, coil, electromagnet fixed core, armature, solenoid valve valve rod, cushion block, spacing block, solenoid valve spring seat, coupling sleeve, solenoid valve spring, draining cone valve, oil drain valve valve rod, oil drain valve spring and cover plate, electromagnetic valve body and cushion block are arranged in juxtaposition, draining cone valve, draining cone valve valve rod is arranged on pump body, armature is connected with coupling sleeve left end by solenoid valve valve rod, coupling sleeve right-hand member is connected with draining cone valve, the pump housing that the tapered end face of draining cone valve is other with it coordinates formation control valve, cooling oil path is processed with in electromagnetic valve body, cooling oil path is through electromagnet core and coil, be communicated with chamber, armature place, spacing block is between armature and solenoid valve spring seat and be threaded connection and be fixed on cushion block, spacing block is processed with draining ring, solenoid valve spring seat is processed with return port, draining ring is connected with return port, return port is connected with chamber, solenoid valve spring place, and chamber, solenoid valve spring place is communicated with spill port by the first oil circuit, and draining cone valve valve rod left end connects draining cone valve, right-hand member connects draining cone valve spring, and draining cone valve valve rod intersects mutually with the second oil circuit, and the second oil circuit is communicated with oil inlet hole by plunger cavity, outlet valve is arranged on pump housing top, and comprise oil outlet valve spring and high-pressure oil pipe connection mouth composition, the second oil circuit is connected with high-pressure oil pipe connection mouth by oil outlet valve spring.
The present invention also comprises some structure characteristics like this:
1. the part of draining cone valve valve rod intersecting with the second oil circuit arranges the first compression face and the second compression face respectively, first compression face and the second compression face lay respectively at draining cone valve side and the draining cone valve spring side of the second oil circuit, and the area of the first compression face is not less than 1.2 times of the second compression face area.
Compared with prior art, the invention has the beneficial effects as follows: the fuel regulator valve of Normally closed type heavy oil single valve electronically controlled unit pump of the present invention is normal close type control valve, when solenoid valve does not power on, draining cone valve is in closed condition, moment and the time of draining oil circuit is opened by electromagnetic valve draining cone valve, both can realize the control in fuel feeding moment, the control to fuel delivery can have been realized again.When normally working, fast, fuel-flow control is accurate for the response of this device.This device is designed with protective measure on draining cone valve; when solenoid valve break down can not power on time; draining cone valve is in normally off and Normally closed type heavy oil fuel regulator valve internal pressure can be caused constantly to raise; now under the effect of protective measure; draining cone valve can open draining oil circuit; make fuel oil flow back to low-pressure reservoir, reduce the fuel pressure in whole system, the safety of protection oil-fired system.On the other hand, normal close type oil drain valve of the present invention is in closed condition in solenoid valve failure situation, and high pressure oil pump still can continue the function of fuel feeding.Under this failure condition, can by regulating ratch, the relative position driving gear ring to pull revolution sleeve to control plunger helix and oil inlet and oil return hole realizes the control to fuel feeding moment and fuel delivery.Owing to needing heating before heavy oil work, the spacing block in Normally closed type heavy oil fuel regulator valve of the present invention avoids the electromagnet of the too high heavy oil of temperature and solenoid valve, armature contacts, the work that guarantee solenoid valve can be safe and reliable; And electromagnetic valve body is processed with cooling oil path, cooling lubricating oil can be introduced and cooled to make solenoid valve inside, the shock and vibration of armature can also be reduced, increase the stability of electromagnetic valve work.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of Normally closed type heavy oil single valve electronically controlled unit pump of the present invention;
Fig. 2 is the cam-plunger structural representation of Normally closed type heavy oil single valve electronically controlled unit pump of the present invention;
Fig. 3 a is the Normally closed type heavy oil fuel regulator valve structural representation of Normally closed type heavy oil single valve electronically controlled unit pump of the present invention, and Fig. 3 b is the partial schematic diagram of Fig. 3 a;
Fig. 4 is the delivery valve structure schematic diagram of Normally closed type heavy oil single valve electronically controlled unit pump of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail.
Composition graphs 1-4, Normally closed type heavy oil single valve electronically controlled unit pump of the present invention is made up of roller plunger 1, Normally closed type heavy oil fuel regulator valve 2 and outlet valve 3.Roller plunger 1 is made up of driving cam 4, roller 5, pump oil piston 6, the pump housing 7, piston spring seat 8, plunger return spring 9, gear ring 10, ratch 11, the pump housing 12, spill port 13, oil inlet hole 14 and plunger cavity 15.The top of plunger cavity 15 is provided with normal close type heavy oil fuel regulator valve, comprises electromagnetic valve body 16, first cooling oil path 17, coil 18, electromagnet fixed core 19, armature 20, solenoid valve valve rod 21, cushion block 22, spacing block 23, draining ring 24, solenoid valve spring seat 25, return port 26, coupling sleeve 27, solenoid valve spring 28, draining cone valve 29, oil drain valve valve rod 30, oil drain valve spring 31 and cover plate 32.Outlet valve 3 is arranged on pump housing top, is made up of high-pressure oil pipe connection mouth 33 oil outlet valve spring 34.
When the solenoid valve of Normally closed type heavy oil fuel regulator valve 2 normally works, fuel oil enters plunger cavity 15 by oil inlet hole 14, and driving cam 4 pushing rolling wheels 5 makes pump oil piston 6 up, and after closing oil inlet hole 14, the fuel oil in compression plunger chamber 15, completes force feed function.Normally closed type heavy oil fuel regulator valve 2 comprises electromagnetic valve body 16, first cooling oil path 17, coil 18, electromagnet fixed core 19, armature 20, solenoid valve valve rod 21, cushion block 22, spacing block 23, draining ring 24, solenoid valve spring seat 25, return port 26, coupling sleeve 27, solenoid valve spring 28, draining cone valve 29, oil drain valve valve rod 30, oil drain valve spring 31 and cover plate 32.Solenoid valve is arranged on Normally closed type heavy oil fuel regulator valve 2 high order end, and it is connected with coupling sleeve 27 by solenoid valve valve rod 21 with draining cone valve 29, and wherein solenoid valve valve rod 21 is connected by interference fit with coupling sleeve 27.When the solenoid valve of Normally closed type heavy oil fuel regulator valve 2 does not power on, solenoid valve spring and draining cone valve spring are all located under compression, and draining cone valve 29 is subject to the spring force F of solenoid valve spring 28
1, draining cone valve spring 31 acts on the spring force F on draining cone valve valve rod
2with fuel pressure P.Due to solenoid valve spring 28 pretightening force F
1be greater than draining cone valve spring 31 pretightening force F
2, so draining cone valve 29 is landed on the conical surface, now draining oil circuit is in normally off, and the fuel oil in plunger cavity 15 flows to outlet valve 3 by the second oil circuit Y after pump oil piston 6 compresses.When fuel pressure P is greater than the initial tension of spring of oil outlet valve spring 34, fuel oil enters oil sprayer through the high-pressure oil pipe be connected with high-pressure oil pipe connection mouth 33.When solenoid valve powers on, draining cone valve 29 is subject to armature 20 and acts on electromagnetic force F on solenoid valve valve rod 21
3, the spring force F of solenoid valve spring 28
1, draining cone valve spring 31 acts on the spring force F on draining cone valve valve rod
2with liquid flow forces F
4.Draining cone valve spring 31 spring force F
2with electromagnetic force F
3the spring force F of solenoid valve spring 28 of making a concerted effort to be greater than
1with liquid flow forces F
4make a concerted effort, so whole valve rod is to left movement, solenoid valve valve rod 21 pulls draining cone valve 29, and draining cone valve 29 lifts, and the first oil circuit X of draining is opened, and fuel oil flows back to low-pressure reservoir by the first oil circuit through spill port 13, can not set up high pressure in plunger cavity.
When the solenoid valve of Normally closed type heavy oil fuel regulator valve 2 break down cannot work time, draining oil circuit is in normally off, cannot open, fuel oil constantly flows into oil sprayer by oil-feed oil circuit, cause Normally closed type heavy oil electronically controlled unit pump dead volume fuel pressure constantly to raise, may damage oil-fired system.The safety protection device of this device Normally closed type heavy oil fuel regulator valve 2 design can solve this problem.The fuel oil compression face of draining cone valve 29 is made up of jointly the first compression face A and the second compression face B.In traditional Normally closed type fuel regulator valve, these two compression face area equation, the hydraulic coupling that draining cone valve 29 is subject to is balance.The oil circuit at draining conical surface place is designed to stepped shaft by this device normal close type heavy oil fuel regulator valve, increases the area of the first compression face A, and make the area ratio of itself and the second compression face B be greater than 1.2, the hydraulic coupling that draining cone valve 29 is subject to no longer balances.When fuel pressure increases to a certain degree; the difference of the pressure of the first compression face A and the second compression face B will make draining cone valve 29 open; draining oil circuit is opened; fuel oil flows back into low-pressure reservoir through draining oil circuit; intrasystem fuel pressure is reduced, protects the safety of Normally closed type heavy oil fuel regulator valve and other hydraulic pressure installation.
Normally closed type heavy oil single valve electronically controlled unit pump of the present invention is when the fault solenoid valves such as motor generation power down can not power on, draining cone valve 29 is in normally off, still can continue oil spout function, the reliability of electronically controlled unit pump can have been improved, improve engine operation stability.Simultaneously, control to fuel feeding can be completed: when roller 5 driving pump oil piston 6 moves upward by mechanical type ratch plunger, after oil inlet hole 14 on the top edge closedown plunger guide bush of plunger 6, fuel oil in plunger cavity 15 starts pressurized, when plunger 6 continues to move upward, plunger 6 spiral chute opens spill port 13, and the fuel oil in plunger cavity 15 flows back to fuel tank through spill port 13.By pulling ratch 11, making gear ring 10 driven rotary pump oil piston 6, the time that plunger 6 spiral chute opens spill port 13 can be changed, to change fuel feeding finish time, and then completing the control to supply time and fuel delivery.
Normally closed type heavy oil single valve electronically controlled unit pump of the present invention works in heavy oil environment, during heavy oil normal temperature, viscosity is larger, need before work to heat it, but traditional electronically controlled unit pump can make the higher heavy oil of temperature directly contact solenoid valve in draining process, make electromagnet 19 and armature 20 expanded by heating, easy corrosion solenoid valve, causes solenoid valve cisco unity malfunction.So the effect of spacing block 21 is kept apart at the electromagnet core 19 of heavy oil and solenoid valve and armature 20, avoid directly contacting with armature 20 from the High Temperature and Heavy Oil of control chamber earial drainage and the electromagnet core 19 of solenoid valve, thus ensure the work that solenoid valve can be safe and reliable.Simultaneously, draining ring 24 is processed with in spacing block 23, solenoid valve spring seat 25 is processed with return port 26, draining ring 24 is connected with return port 26 by the passage of processing in spacing block 23, their effect is that low pressure oil way is returned in the heavy oil drainage that the clearance leakage from spacing block 23 and coupling sleeve 27 is entered, and prevents it from leaking into armature 20 part.Spacing block 23 can also play the position-limiting action to controlling valve rod lift.Electromagnetic valve body 16 also machined the first cooling oil path 17, can cooling lubricating oil be introduced, be used for cooling electromagnet core 19 and armature 20; The introducing of cooling lubricating oil can also reduce the shock and vibration of armature 20, increases the stability of electromagnetic valve work.Normally closed type heavy oil single valve electronically controlled unit pump of the present invention, is characterized in that: comprise roller plunger, Normally closed type heavy oil fuel regulator valve and outlet valve three part.Roller plunger comprises driving cam, roller, pump oil piston, the pump housing, piston spring seat, plunger return spring, plunger housing, gear ring, ratch.Driving cam is arranged on roller lower end, roller is arranged on the lower end of plunger housing, piston spring is enclosed within outside plunger, the lower end of piston spring is positioned in plunger housing, withstand on spring seat, the upper end of piston spring withstands on pump housing lower end, the top of pump oil piston is positioned at the pump housing, bottom is positioned at plunger housing, plunger cavity is formed between pump oil piston and the inwall of the pump housing, its upper end sidewall is arranged the spiral chute controlling spill port opening and closing, enclosure interior is provided with ratch, the gear ring matched with ratch is installed outside plunger bushing, in the pump housing, oil inlet hole is set respectively, spill port and the first oil circuit, the top of plunger cavity is provided with Normally closed type heavy oil fuel regulator valve, comprises electromagnetic valve body, cooling oil path, coil, electromagnet fixed core, armature, solenoid valve valve rod, cushion block, spacing block, draining ring, return port, solenoid valve spring seat, coupling sleeve, solenoid valve spring, draining cone valve, oil drain valve valve rod, oil drain valve spring and cover plate.Electromagnetic valve body and cushion block are arranged in juxtaposition, and draining cone valve, draining cone valve valve rod are arranged on pump body.Armature is connected with coupling sleeve left end by solenoid valve valve rod, and coupling sleeve right-hand member is connected with draining cone valve.The pump housing that the tapered end face of draining cone valve is other with it coordinates formation control valve.Be processed with cooling oil path in electromagnetic valve body, cooling oil path, through electromagnet core and coil, is communicated with chamber, armature place.Spacing block, between armature and solenoid valve spring seat, is threaded connection and is fixed on cushion block, spacing block is processed with draining ring, and solenoid valve spring seat is processed with return port, and draining ring is connected with return port, and return port is connected with chamber, solenoid valve spring place.Chamber, solenoid valve spring place is communicated with spill port, and draining cone valve valve rod left end connects draining cone valve, and right-hand member connects draining cone valve spring, and draining cone valve valve rod intersects mutually with the second oil circuit; Outlet valve is arranged on pump housing top, and be made up of oil outlet valve spring and high-pressure oil pipe connection mouth, the second oil circuit is connected with high-pressure oil pipe connection mouth by oil outlet valve spring.
The present invention can also comprise:
1. in the part that draining cone valve valve rod intersects with the second oil circuit, draining cone valve side arranges the first compression face A, and draining cone valve spring side arranges the second compression face B, and the area of the first compression face A is not less than 1.2 times of the second compression face B area.
The present invention is to provide a kind of Normally closed type heavy oil single valve electronically controlled unit pump, it comprises cam-plunger, Normally closed type heavy oil fuel regulator valve and outlet valve.Roller plunger is made up of driving cam, roller, pump oil piston, plunger housing, piston spring seat, plunger return spring, gear ring, ratch and the pump housing.Normally closed type heavy oil fuel regulator valve comprises electromagnetic valve body, cooling oil path, coil, electromagnet fixed core, armature, solenoid valve valve rod, cushion block, spacing block, draining ring, solenoid valve spring seat, return port, coupling sleeve, solenoid valve spring, draining cone valve, oil drain valve valve rod, oil drain valve spring and cover plate.When Normally closed type heavy oil fuel regulator valve does not power on, draining cone valve is in closed condition, and the fuel oil in pump oil piston compression plunger chamber, high-pressure oil flow is to outlet valve.When fuel pressure is greater than the pretightening force of oil outlet valve spring, fuel oil flows into high-pressure oil pipe.When solenoid valve powers on, draining oil circuit opened by draining cone valve.The electromagnet adding the too high heavy oil of temperature when avoiding draining and solenoid valve of spacing block, armature contact, and ensure that solenoid valve can not expanded by heating, thus work that can be safe and reliable; The cooling oil path on electromagnetic valve body top, cooling lubricating oil can be introduced cooled to make solenoid valve inside, the shock and vibration of armature can also be reduced, the stability of electromagnetic valve work is got a promotion, and then improve the reliability of electronically controlled unit pump, add the stability of engine operation.
The present invention includes roller plunger, Normally closed type heavy oil fuel regulator valve and outlet valve.Roller plunger comprises driving cam, roller, pump oil piston, the pump housing, piston spring seat, plunger return spring, plunger housing, gear ring, ratch.Driving cam is arranged on roller lower end, roller is arranged on the lower end of plunger housing, piston spring is enclosed within outside plunger, the lower end of piston spring is positioned in plunger housing, withstand on spring seat, the upper end of piston spring withstands on pump housing lower end, the top of pump oil piston is positioned at the pump housing, bottom is positioned at plunger housing, plunger cavity is formed between pump oil piston and the inwall of the pump housing, its upper end sidewall is arranged the spiral chute controlling spill port opening and closing, enclosure interior is provided with ratch, the gear ring matched with ratch is installed outside plunger bushing, in the pump housing, oil inlet hole is set respectively, spill port and the first oil circuit, the top of plunger cavity is provided with Normally closed type heavy oil fuel regulator valve, comprises electromagnetic valve body, cooling oil path, coil, electromagnet fixed core, armature, solenoid valve valve rod, cushion block, spacing block, draining ring, return port, solenoid valve spring seat, coupling sleeve, solenoid valve spring, draining cone valve, oil drain valve valve rod, oil drain valve spring and cover plate.Control valve body and cushion block are arranged in juxtaposition, and draining cone valve, draining cone valve valve rod are arranged on pump body.Armature is connected with coupling sleeve left end by solenoid valve valve rod, and coupling sleeve right-hand member is connected with draining cone valve.The pump housing that the tapered end face of draining cone valve is other with it coordinates formation control valve.Be processed with cooling oil path in electromagnetic valve body, cooling oil path, through electromagnet core and coil, is communicated with chamber, armature place.Chamber, solenoid valve spring place is communicated with spill port, and draining cone valve valve rod left end connects draining cone valve, and right-hand member connects draining cone valve spring, and draining cone valve valve rod intersects mutually with the second oil circuit; Outlet valve is arranged on pump housing top, and be made up of oil outlet valve spring and high-pressure oil pipe connection mouth, the second oil circuit is connected with high-pressure oil pipe connection mouth by oil outlet valve spring.
Spacing block, between armature and solenoid valve spring seat, is threaded connection and is fixed on cushion block, spacing block is processed with draining ring, and solenoid valve spring seat is processed with return port, and draining ring is connected with return port, and return port is connected with chamber, solenoid valve spring place.
Be processed with cooling oil path in electromagnetic valve body, can introduce cooling lubricating oil, cooling oil path, through electromagnet core and coil, is communicated with chamber, armature place.
In the part that draining cone valve valve rod intersects with the second oil circuit, draining cone valve side arranges the first compression face A, and draining cone valve spring side arranges the second compression face B, and the area of the first compression face A is not less than 1.2 times of the second compression face B area.
Claims (2)
1. Normally closed type heavy oil single valve electronically controlled unit pump, it is characterized in that: comprise roller plunger, Normally closed type heavy oil fuel regulator valve and outlet valve three part, roller plunger comprises driving cam, roller, pump oil piston, the pump housing, piston spring seat, plunger return spring, plunger housing, gear ring, ratch, roller is arranged on the lower end of plunger housing, driving cam coordinates with roller, piston spring is enclosed within outside plunger, the lower end of piston spring to be positioned in plunger housing and to withstand on spring seat, the upper end of piston spring withstands on pump housing lower end, the top of pump oil piston is positioned at the pump housing, bottom is positioned at plunger housing, plunger cavity is formed between pump oil piston and the inwall of the pump housing, its upper end sidewall is arranged the spiral chute controlling spill port opening and closing, enclosure interior is provided with ratch, the gear ring matched with ratch is installed outside plunger bushing, in the pump housing, oil inlet hole is set respectively, spill port and the first oil circuit, oil inlet hole is connected with plunger cavity, described Normally closed type heavy oil fuel regulator valve comprises electromagnetic valve body, coil, electromagnet fixed core, armature, solenoid valve valve rod, cushion block, spacing block, solenoid valve spring seat, coupling sleeve, solenoid valve spring, draining cone valve, oil drain valve valve rod, oil drain valve spring and cover plate, electromagnetic valve body and cushion block are arranged in juxtaposition, draining cone valve, draining cone valve valve rod is arranged on pump body, armature is connected with coupling sleeve left end by solenoid valve valve rod, coupling sleeve right-hand member is connected with draining cone valve, the pump housing that the tapered end face of draining cone valve is other with it coordinates formation control valve, cooling oil path is processed with in electromagnetic valve body, cooling oil path is through electromagnet core and coil, be communicated with chamber, armature place, spacing block is between armature and solenoid valve spring seat and be threaded connection and be fixed on cushion block, spacing block is processed with draining ring, solenoid valve spring seat is processed with return port, draining ring is connected with return port, return port is connected with chamber, solenoid valve spring place, and chamber, solenoid valve spring place is communicated with spill port by the first oil circuit, and draining cone valve valve rod left end connects draining cone valve, right-hand member connects draining cone valve spring, and draining cone valve valve rod intersects mutually with the second oil circuit, and the second oil circuit is communicated with oil inlet hole by plunger cavity, outlet valve is arranged on pump housing top, and comprise oil outlet valve spring and high-pressure oil pipe connection mouth composition, the second oil circuit is connected with high-pressure oil pipe connection mouth by oil outlet valve spring.
2. Normally closed type heavy oil single valve electronically controlled unit pump according to claim 1, it is characterized in that: the part that draining cone valve valve rod intersects with the second oil circuit arranges the first compression face and the second compression face respectively, first compression face and the second compression face lay respectively at draining cone valve side and the draining cone valve spring side of the second oil circuit, and the area of the first compression face is not less than 1.2 times of the second compression face area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510829398.4A CN105351129A (en) | 2015-11-25 | 2015-11-25 | Normally-closed type heavy-oil single-valve electronic unit pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510829398.4A CN105351129A (en) | 2015-11-25 | 2015-11-25 | Normally-closed type heavy-oil single-valve electronic unit pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105351129A true CN105351129A (en) | 2016-02-24 |
Family
ID=55327172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510829398.4A Pending CN105351129A (en) | 2015-11-25 | 2015-11-25 | Normally-closed type heavy-oil single-valve electronic unit pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105351129A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901388A (en) * | 2021-03-03 | 2021-06-04 | 上海钧风电控科技有限公司 | Lightweight large-flow oil valve plunger assembly and high-pressure oil pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103184960A (en) * | 2013-03-26 | 2013-07-03 | 哈尔滨工程大学 | Marine electromagnetically-controlled heavy oil injector |
| CN104806408A (en) * | 2015-04-30 | 2015-07-29 | 哈尔滨工程大学 | Multi-mode normally closed electronic control unit pump |
| CN104806406A (en) * | 2015-04-30 | 2015-07-29 | 哈尔滨工程大学 | Normally closed electro-mechanical hybrid high-pressure oil pump |
| CN205207026U (en) * | 2015-11-25 | 2016-05-04 | 哈尔滨工程大学 | Normal close formula is automatically controlled monoblock pump of single valve for heavy oil |
-
2015
- 2015-11-25 CN CN201510829398.4A patent/CN105351129A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103184960A (en) * | 2013-03-26 | 2013-07-03 | 哈尔滨工程大学 | Marine electromagnetically-controlled heavy oil injector |
| CN104806408A (en) * | 2015-04-30 | 2015-07-29 | 哈尔滨工程大学 | Multi-mode normally closed electronic control unit pump |
| CN104806406A (en) * | 2015-04-30 | 2015-07-29 | 哈尔滨工程大学 | Normally closed electro-mechanical hybrid high-pressure oil pump |
| CN205207026U (en) * | 2015-11-25 | 2016-05-04 | 哈尔滨工程大学 | Normal close formula is automatically controlled monoblock pump of single valve for heavy oil |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901388A (en) * | 2021-03-03 | 2021-06-04 | 上海钧风电控科技有限公司 | Lightweight large-flow oil valve plunger assembly and high-pressure oil pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8162623B2 (en) | High-pressure liquid supply pump | |
| US9828958B2 (en) | High-pressure fuel supply pump | |
| US20080154479A1 (en) | Fuel injection system | |
| CN102705034B (en) | Oil pump electricity-liquid proportion overflow variable control method and device | |
| CN104806406B (en) | The electromechanical combined formula high-pressure oil pump of closed type | |
| CN110242460A (en) | A kind of balanced type two-bit triplet fuel injection valve | |
| CN105332833A (en) | Normally-closed bivalve electronic-controlled fuel injection system for heavy oil | |
| CN205207026U (en) | Normal close formula is automatically controlled monoblock pump of single valve for heavy oil | |
| CN105351129A (en) | Normally-closed type heavy-oil single-valve electronic unit pump | |
| CN105332835A (en) | Normally open type double-valve electronic control oil injection system for heavy oil | |
| CN205207027U (en) | Automatically controlled monoblock pump of single valve for heavy oil open in usual | |
| CN205207025U (en) | Normal close formula is bivalve electronic control fuel injection system for heavy oil | |
| CN204677346U (en) | The electromechanical combined formula high pressure oil pump of normal close type | |
| US7216669B2 (en) | Pressure regulating valve for common rail fuel injection systems | |
| ITMI20081156A1 (en) | QUICK OPENING FUEL INJECTOR FOR HIGH PRESSURE INJECTION | |
| CN105332834A (en) | Normally open type single-valve electronic unit pump for heavy oil | |
| CN201322016Y (en) | Oil pipe explosion-proof device | |
| CN201255062Y (en) | High-pressure co-rail injection pump for diesel engine | |
| CN204239117U (en) | A kind of relief valve being applicable to heavy oil common rail system | |
| CN204677345U (en) | The normally closed electronically controlled unit pump of double-action | |
| CN104481764B (en) | A kind of heavy oil common rail system of carry potential overflow valve | |
| CN205207028U (en) | Bivalve electronic control fuel injection system for heavy oil open in usual | |
| CN108194239A (en) | A kind of automatically controlled VE types dispensing pump and its flameout method | |
| CN204677342U (en) | The normally closed electronically controlled unit pump of multi-mode piezoelectric formula | |
| CN218235318U (en) | Ultrahigh fuel pressure enhancing device for high-power diesel engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160224 |