CN209261714U - A kind of co-rail fuel feed pump of oil inlet control - Google Patents
A kind of co-rail fuel feed pump of oil inlet control Download PDFInfo
- Publication number
- CN209261714U CN209261714U CN201820475551.7U CN201820475551U CN209261714U CN 209261714 U CN209261714 U CN 209261714U CN 201820475551 U CN201820475551 U CN 201820475551U CN 209261714 U CN209261714 U CN 209261714U
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- Prior art keywords
- oil
- oil inlet
- hole
- common rail
- low pressure
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- 239000000446 fuel Substances 0.000 title claims abstract description 83
- 239000003921 oil Substances 0.000 claims abstract description 573
- 239000010721 machine oil Substances 0.000 claims abstract description 31
- 239000002283 diesel fuel Substances 0.000 claims abstract description 27
- 238000009434 installation Methods 0.000 claims description 56
- 238000007789 sealing Methods 0.000 claims description 46
- 229910000831 Steel Inorganic materials 0.000 claims description 44
- 239000010959 steel Substances 0.000 claims description 44
- 230000002093 peripheral effect Effects 0.000 claims description 29
- 239000006071 cream Substances 0.000 claims description 12
- 239000002828 fuel tank Substances 0.000 claims description 8
- 208000002925 dental caries Diseases 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims 2
- 238000005259 measurement Methods 0.000 claims 1
- 238000005086 pumping Methods 0.000 claims 1
- 239000000295 fuel oil Substances 0.000 abstract description 9
- 239000010687 lubricating oil Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000010761 intermediate fuel oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005096 rolling process Methods 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
- 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
- F02M59/12—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps having other positive-displacement pumping elements, e.g. rotary
-
- 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
-
- 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
- F02M59/462—Delivery valves
-
- 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
- F02M59/464—Inlet valves of the check valve type
-
- 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
- F02M59/48—Assembling; Disassembling; Replacing
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
A kind of co-rail fuel feed pump of oil inlet control disclosed by the utility model, including the common rail monoblock pump that an oil feed pump ontology and at least one are mounted in oil feed pump ontology, the intrinsic machine oil chamber of oil feed pump and diesel oil feeding channel are mutually isolated.Prevent fuel oil and or lubricating oil leakage and reduce machine oil and diesel oil mixing probability.
Description
Technical field
The utility model relates to can be suitably used for light, medium duty diesel machine, the co-rail fuel feed pump of the discharge of state three to state six can be met,
In particular to a kind of co-rail fuel feed pump of oil inlet control.
Background technique
With the propulsion of diesel engine state three, state four, state five or more maximum discharge standard, high pressure common rail fuel injection system
Have become the mainstream technology of diesel fuel system.The high pressure common rail fuel injection system of mainstream is all by co-rail fuel feed pump, height
The composition such as pressure oil rail, common-rail injector, ECU and sensor.Within the system, the major function of co-rail fuel feed pump be periodically to
High pressure oil rail provides enough fuel oils, and to guarantee the stability of high pressure oil rail fuel pressure, fuel feeding moment and fuel delivery are big
It is small to be controlled by ECU.By theory of mechanics, co-rail fuel feed pump mainly has in-line plunger pump (abbreviation in-line arrangement common rail pump) and radial
Plunger pump (referred to as radial common rail pump)；By control principle, mainly there are control low pressure oil inlet and the control fuel-displaced two kinds of patterns of high pressure.
There is also machine oil and diesel oil mixing probability height, inlet valves to seal not good enough problem for current in-line arrangement common rail pump.
Utility model content
One is provided the technical problem to be solved by the utility model is to deficiency present in existing in-line arrangement common rail pump
The co-rail fuel feed pump of kind oil inlet control.The in-line arrangement common rail that the co-rail fuel feed pump of oil inlet control is controlled in the oil inlet of oil lubricating
It is improved on pump foundation, diesel oil feeding chamber and machine oil oil suction chamber are mutually isolated in the pump housing, and then reduce machine oil and mutually mix with diesel oil
The probability of conjunction.Meanwhile inlet valve is using the conical surface seal mode of traditional delivery valve structure.
Technical problem to be solved in the utility model can be achieved through the following technical solutions:
A kind of co-rail fuel feed pump of oil inlet control, including
One oil feed pump ontology, in the oil feed pump ontology be arranged machine oil chamber, the machine oil chamber be divided into a cam chamber and
At least one common rail monoblock pump installation cavity, all common rail monoblock pump installation cavitys are respectively positioned on the top of the cam chamber and and institute
Cam chamber connection is stated, all common rail monoblock pump installation cavity parallel intervals are arranged in the oil feed pump ontology, all common rails
The axis of monoblock pump installation cavity is vertical with the axis of the cam chamber；A machine oil is offered in the lower part of the oil feed pump ontology
Fuel feed hole, the outlet of the machine oil fuel feed hole are connected to the machine oil chamber, are internally screwed with a machine oil oil inlet in the machine oil fuel feed hole
Screw；The top of the oil feed pump ontology is provided with first oil input channel and at least one the second oil input channels, every one second
The entrance of oil input channel is connected to and is mutually perpendicular to first oil input channel；One is offered on the top of the oil feed pump ontology
Overflow hole, the entrance of the overflow hole are connected to wherein second oil input channel, are internally screwed with an overflow screw in the overflow hole,
The overflow screw is connected to by oil pipe with fuel tank；
The camshaft being mounted in the cam chamber, the two end axles of the camshaft are located on the oil feed pump ontology,
The quantity interval that the common rail monoblock pump installation cavity is corresponded on the camshaft is equipped with and the common rail monoblock pump installation cavity
The identical cam of quantity, the corresponding common rail monoblock pump installation cavity of each cam；
It is mounted on the oil transfer pump of oil feed pump body lower part side, the oil transfer pump is worked by the camshaft actuated,
The oil inlet of the oil transfer pump is connected to by oil pipe with fuel tank；
It is mounted on the diesel oil feeding screw and diesel oil feeding metering valve of the oil feed pump body upper part, the diesel oil feeding spiral shell
The oil inlet nailed on is connected to by oil pipe with the oil outlet of the oil transfer pump, and the oil outlet on the diesel oil feeding screw is located at institute
It states in oil feed pump ontology and is connected to the oil inlet for being similarly positioned in the intrinsic diesel oil feeding metering valve of the oil feed pump, the bavin
The oil outlet of oily inlet metering valve is located in the oil feed pump ontology and is connected to first oil input channel；
It is mounted on the pressure maintaining valve of the oil feed pump body upper part, the entrance of the pressure maintaining valve and first oil input channel connect
It is logical；
An at least common rail monoblock pump, each common rail monoblock pump are mounted on corresponding common rail monoblock pump on the oil feed pump ontology
In installation cavity；Each common rail monoblock pump includes:
The lower part of one common rail monoblock pump ontology, the common rail monoblock pump ontology is inserted into the common rail monoblock pump installation cavity,
Outside the top of the prominent oil feed pump ontology in top, the common rail monoblock pump ontology is fastened on the oil feed pump sheet by fastener
On body；First is provided between the outer peripheral surface of the common rail monoblock pump ontology and the inner peripheral surface of the common rail monoblock pump installation cavity
Sealing ring；High pressure oil discharge passage, oil outlet one-way valve mounting hole are coaxially arranged on the central axes of the common rail monoblock pump ontology
And plunger cavity, a high pressure fuel chamber, the top of the high pressure fuel chamber and the high pressure are provided at the top of the plunger cavity
The bottom of oil discharge passage is connected to, and the top of the high pressure oil discharge passage is connected to the oil outlet one-way valve mounting hole and in the height
A cone seal hole is provided at the top of pressure oil discharge passage；It is low that first is coaxially arranged on the top of the common rail monoblock pump ontology
Pressure oil oil discharge passage, the second low pressure oil oil discharge passage, oil inlet valve seat mounting hole, low pressure oil oil outlet chamber and inlet valve installation screw,
The first low pressure oil oil discharge passage, the second low pressure oil oil discharge passage, oil inlet valve seat mounting hole, low pressure oil oil outlet chamber and inlet valve
The common axis of installation screw and the central axes of the common rail monoblock pump ontology are mutually perpendicular to；Wherein first low pressure oil is fuel-displaced
The outlet in channel is connected to high pressure fuel chamber, and the entrance of the first low pressure oil oil discharge passage and second low pressure oil are fuel-displaced logical
The entrance of the outlet in road, the second low pressure oil oil discharge passage is connected by oil inlet valve seat mounting hole and low pressure oil oil outlet chamber
Logical, the inlet valve installation screw is connected to the low pressure oil oil outlet chamber；One is additionally provided in the common rail monoblock pump ontology
Third oil input channel, the outlet of the entrance of the third oil input channel and corresponding second oil input channel in the oil feed pump ontology,
The outlet of the third oil input channel is connected to the low pressure oil oil outlet chamber；
The middle upper section of one plunger, the plunger is inserted into the plunger cavity by the bottom of the plunger cavity, the plunger
Lower section the plunger cavity is stretched out by the bottom of the plunger cavity, be fixed with a plunger spring seat in the bottom of the plunger,
One roller body mounting base is installed on the plunger spring seat, roller body, the rolling are installed in the roller body mounting base
Wheel body is contacted with the actuated by cams；Be cased with a plunger spring on the lower section of the plunger, the top of the plunger spring with
The bottom of the common rail monoblock pump ontology contacts, and the bottom of plunger spring and the plunger spring seated connection touch；
One is mounted on the oil outlet one-way valve in the oil outlet one-way valve mounting hole, and the steel ball in oil outlet one-way valve is to the height
Pressure oil discharge passage is opened and closed, when closing, the sealing of steel ball and the cone seal hole in the oil outlet one-way valve
Conical surface seal contact；
One oil inlet valve member, the oil inlet valve member include inlet valve plug screw, oil inlet valve seat, oil inlet spool and inlet valve bullet
Spring；Spool installation pilot hole, low pressure oil shoe cream room, oil inlet cone seal hole are provided on the central axis of the oil inlet valve seat,
Wherein the low pressure oil shoe cream room is located between spool installation pilot hole and oil inlet cone seal hole, in the oil inlet valve seat
Be arranged radially an at least low pressure fuel feed hole, the inner end of the low pressure fuel feed hole is connected to the low pressure oil shoe cream room, institute
The outer end for the low pressure fuel feed hole stated is concordant with the outer peripheral surface of the oil inlet valve seat；It is arranged one on the outer peripheral surface of the oil inlet plug screw
The outer diameter on section external screw thread and one section of cylindrical surface, the cylindrical surface is less than the externally threaded outer diameter, in the oil inlet plug screw
End is provided with an oil inlet spool and makes a concession hole, and the oil inlet spool is made a concession hole extreme direction to outside the oil inlet plug screw and extended, described
Oil inlet plug screw has been arranged radially a fuel feed hole, and the inner end of the fuel feed hole is made a concession hole with the oil inlet spool and is connected to, it is described into
The outer end of oilhole is concordant with the cylindrical surface on the oil inlet plug screw；The oil inlet spool is cylindrical-shaped structure, in the inlet valve
The interlude of core is provided with a guide section, the first end of the oil inlet spool is provided with a sealing frustum, in the sealed taper
Table top is provided with conical seal (contact) face to the side of the guide section；Guide section in the oil inlet spool passes through the inlet valve
Spool in seat installs pilot hole, and the first end and second end of the oil inlet spool is located at the spool in the oil inlet valve seat
Both ends outside pilot hole are installed, between the spool installation pilot hole in the guide section and the oil inlet valve seat in the oil inlet spool
Cooperated using couple pair；The first end of the oil inlet valve seat is inserted into the oil inlet valve seat mounting hole of the common rail monoblock pump ontology
In, the oil inlet plug screw screws into the inlet valve installation screw of the common rail monoblock pump ontology, the oil inlet plug screw
Inner face contacted with the second end end face of the oil inlet valve seat, the second end of the oil inlet spool is deep into the oil inlet plug screw
Oil inlet spool make a concession hole in, oil inlet valve spring retainer, the oil inlet valve spring are installed in the second end of the oil inlet spool
It covers in the second end of the oil inlet spool, the first end of the oil inlet valve spring is against the second end end face of the oil inlet valve seat
On, the second end of the oil inlet valve spring is against on the oil inlet valve spring retainer, the oil inlet outer end of hole on the oil inlet spiral shell seat with
Low pressure oil oil outlet chamber connection in the common rail monoblock pump ontology；The sealing frustum of the oil inlet spool second end is located at described the
Between two low pressure oil oil discharge passages and oil inlet cone seal hole, when it is described sealing frustum on conical seal (contact) face and it is described into
When the sealing cone in oily cone seal hole is in sealing contact, it is described sealing frustum by the oil inlet valve seat low pressure oil shoe cream room with
Channel between the second low pressure oil oil discharge passage is closed；The outer end of the low pressure fuel feed hole and the common rail monoblock pump sheet
Low pressure oil oil outlet chamber connection in body.
In a preferred embodiment of the utility model, the inner peripheral surface of the outer peripheral surface of the plunger and the plunger cavity it
Between be provided with a drain pan, be provided with an oil leak hole in the common rail monoblock pump ontology, the entrance of the oil leak hole with it is described
Drain pan connection, the entrance of the oil leak hole are connected to the low pressure oil oil outlet chamber in the common rail monoblock pump ontology.
In a preferred embodiment of the utility model, each common rail monoblock pump ontology and the oil feed pump ontology it
Between be provided with the second sealing ring, second sealing ring is located at the periphery of every one second oil input channel in the oil feed pump ontology.
In a preferred embodiment of the utility model, the oil outlet one-way valve further includes delivery valve seat, delivery valve bullet
Spring, delivery valve steel ball seat, offer one first oil outlet on the central axes of the delivery valve seat, in the delivery valve steel ball seat
Offer the second oil outlet on axis and offer at least one oblique oil outlet in the lower end of the delivery valve steel ball seat, it is described go out
The excircle of valve ball seat is made of the first cylindrical surface and the second cylindrical surface, wherein the outer diameter on the second cylindrical surface is less than described the
One cylindrical surface outer diameter, the outlet of the oblique oil outlet are connected to second oil outlet, the entrance of the oblique oil outlet with
Second cylindrical surface is concordant；The delivery valve seat, oil outlet valve spring, delivery valve steel ball seat, steel ball are installed in described fuel-displaced
In check valve mounting hole, wherein the delivery valve seat is located at topmost, oil outlet valve spring is located at the lower section of the delivery valve seat, institute
The lower section that delivery valve steel ball seat is located at the oil outlet valve spring is stated, the steel ball is located at the lower section of the delivery valve steel ball seat；Institute
The inner peripheral surface of the outer peripheral surface and the oil outlet one-way valve mounting hole of stating delivery valve seat is interference fitted, and the of the delivery valve steel ball seat
The inner peripheral surface of one periphery and the oil outlet one-way valve mounting hole is slidably matched, the upper end of the oil outlet valve spring be against it is described go out
The spring of oil valve seat installs in hole, and the spring that the lower end of the oil outlet valve spring is against the delivery valve steel ball seat installs in hole.
In a preferred embodiment of the utility model, the oil transfer pump uses vane-type fuel transfer pump.
In a preferred embodiment of the utility model, on the side of the roller body mounting base of each common rail monoblock pump
It is provided with a guide groove, the guide groove extends up and down along the axis direction of the roller body mounting base, in the oil feed pump sheet
The guiding groove location that body corresponds to each roller body mounting base offers a stop screw hole, is internally screwed with one in the stop screw hole
Guide and limit screw, the inner end of the guide and limit screw is deep into the guide groove of corresponding roller body mounting base, to idler wheel
Circumferentially rotating for body mounting base limit and be oriented to the axial movement of roller body mounting base.
Due to use technical solution as above, the utility model compared with prior art, have it is following a little:
1. by be arranged between the outer peripheral surface of common rail monoblock pump ontology and the inner peripheral surface of common rail monoblock pump installation cavity the
One sealing ring and the second sealing ring being arranged between each common rail monoblock pump ontology and oil feed pump ontology, by machine oil chamber and diesel oil
Chamber is kept apart, prevent fuel oil and or lubricating oil leakage and reduce machine oil and diesel oil mixing probability.
2. the oil transfer pump of the utility model uses vane-type fuel transfer pump, installation space is smaller, good manufacturability, fuel feeding efficiency
It is high.
3. the roller body mounting base in the common rail monoblock pump of the utility model is carried out axially directed using guide and limit screw
With prevent from circumferentially rotating, structure is simple.
4. the oil inlet valve member of the utility model uses one-way valve structures, using the conical surface seal side of traditional delivery valve structure
Formula, sealed reliable, structure are simple.
5. the fuel-displaced valve member of the utility model uses one-way valve structures, using steel ball sealing, sealing effect is good, structure
It is simple and reliable.
Detailed description of the invention
Fig. 1 is the co-rail fuel feed pump structural schematic diagram that the oil inlet of the utility model controls.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the A-A cross-sectional view of the utility model.
Fig. 4 is enlarged diagram at the I of Fig. 3.
Fig. 5 is enlarged diagram at the II of Fig. 3.
Specific embodiment
Referring to Fig. 1 to Fig. 5, a kind of co-rail fuel feed pump of oil inlet control shown in figure, including 100 He of oil feed pump ontology
Two common rail monoblock pumps are constituted.
Machine oil chamber 110 is set in oil feed pump ontology 100, and machine oil chamber 110 is divided to for a cam chamber 111 and two common rail lists
Body pumps installation cavity 112, and two common rail monoblock pump installation cavitys 112 are respectively positioned on the top of cam chamber 111 and connect with cam chamber 111
It is logical；Two 112 parallel intervals of common rail monoblock pump installation cavity are arranged in oil feed pump ontology 100, two common rail monoblock pump installation cavitys
112 axis is vertical with the axis of cam chamber 111.
A machine oil fuel feed hole (not shown), the outlet of machine oil fuel feed hole are offered in the lower part of oil feed pump ontology 100
It is connected to machine oil chamber 110, is internally screwed with a machine oil oil inlet screw 120 in machine oil fuel feed hole.Machine oil passes through 120 note of machine oil oil inlet screw
Enter in machine oil chamber 110.
The top of oil feed pump ontology 100 is provided with first oil input channel 130 and two the second oil input channels 140, it is each
The entrance of second oil input channel 140 is connected to and is mutually perpendicular to the first oil input channel 130.
Be also provided with an overflow hole 150 on the top of oil feed pump ontology 100, the entrance of overflow hole 150 with wherein one article the
The connection of two oil input channels 140 is internally screwed with an overflow screw 160 in overflow hole 150, and overflow screw 160 passes through oil pipe and fuel tank (figure
In be not shown) connection.
One camshaft 170 is installed in cam chamber 111, the two end axles of camshaft 170 are located on oil feed pump ontology 100,
There are two cam 180, each cams for the location interval installation of corresponding two common rail monoblock pump installation cavitys 112 on camshaft 170
A 180 corresponding common rail monoblock pump installation cavitys 112.
One oil transfer pump 200 is installed in 100 lower part side of oil feed pump ontology, oil transfer pump 200 drives work by camshaft 170
Make, the oil inlet of oil transfer pump 200 is connected to by oil pipe with fuel tank.
Diesel oil feeding screw 310 and diesel oil feeding metering valve 320 be installed on the top of oil feed pump ontology 100, diesel oil into
Oil inlet on whelk nail 310 is connected to by oil pipe with the oil outlet of oil transfer pump 200, the oil outlet on diesel oil feeding screw 310
Connect in oil feed pump ontology 100 and with the oil inlet for the diesel oil feeding metering valve 320 being similarly positioned in oil feed pump ontology 100
Logical, the oil outlet of diesel oil feeding metering valve 320 is located in oil feed pump ontology 100 and is connected to the first oil input channel 130.
Pressure maintaining valve 330, the entrance of pressure maintaining valve 330 and the first oil input channel 130 are installed on the top of oil feed pump ontology 100
Connection.Pressure maintaining valve 330 it is structurally and functionally structurally and functionally identical with the pressure maintaining valve on existing co-rail fuel feed pump, herein not
It is repeating.
Two common rail monoblock pumps are separately mounted on oil feed pump ontology 100 in corresponding common rail monoblock pump installation cavity 112.
Each common rail monoblock pump includes common rail monoblock pump ontology 400, oil inlet valve member 500, fuel-displaced valve member 600 and column
Plug 700.
In the lower part insertion common rail monoblock pump installation cavity 112 of common rail monoblock pump ontology 400, the prominent oil feed pump ontology in top
Outside 100 top, common rail monoblock pump ontology 400 is fastened on oil feed pump ontology 100 by bolt 410, nut 420.
Is provided between the outer peripheral surface of common rail monoblock pump ontology 400 and the inner peripheral surface of common rail monoblock pump installation cavity 112
One sealing ring 430.
High pressure oil discharge passage 441, oil outlet one-way valve installation are coaxially arranged on the central axes of common rail monoblock pump ontology 400
Hole 442 and plunger cavity 443 are provided with a high pressure fuel chamber 444 at the top of plunger cavity 443, the top of high pressure fuel chamber 444 with
The bottom of high pressure oil discharge passage 441 is connected to, the top of high pressure oil discharge passage 441 be connected to oil outlet one-way valve mounting hole 442 and
The top of high pressure oil discharge passage 441 is provided with a cone seal hole 445.
The top of common rail monoblock pump ontology 400 is coaxially arranged with the first low pressure oil oil discharge passage 446, the second low pressure oil goes out
Oily channel 447, oil inlet valve seat mounting hole 448, low pressure oil oil outlet chamber 449 and inlet valve installation screw 450, the first low pressure oil go out
Oily channel 446, the second low pressure oil oil discharge passage 447, oil inlet valve seat mounting hole 448, low pressure oil oil outlet chamber 449 and inlet valve installation
The common axis of screw hole 450 and the central axes of common rail monoblock pump ontology 400 are mutually perpendicular to；Wherein the first low pressure oil oil discharge passage
446 outlet is connected to high pressure fuel chamber 444, the entrance of the first low pressure oil oil discharge passage 446 and the second low pressure oil oil discharge passage
The entrance of 447 outlet, the second low pressure oil oil discharge passage 447 passes through oil inlet valve seat mounting hole 448 and low pressure oil oil outlet chamber
449 connections, inlet valve installation screw 450 are connected to low pressure oil oil outlet chamber 449；It is additionally provided in common rail monoblock pump ontology 400
One third oil input channel 451, the entrance of third oil input channel 451 go out with the second oil input channel 140 corresponding in oil feed pump ontology 100
Mouth connection, the outlet of third oil input channel 451 is connected to low pressure oil oil outlet chamber 449.
The middle upper section of plunger 700 is inserted into plunger cavity 443 by the bottom of plunger cavity 443, and the lower section of plunger 700 is by plunger
Plunger cavity 443 is stretched out in the bottom of chamber 443, a plunger spring seat 710 is fixed in the bottom of plunger 700, in plunger spring seat
One roller body mounting base 720 is installed on 710, roller body 730 is installed in roller body mounting base 720, roller body 730 with it is convex
180 driving contact of wheel；A plunger spring 740, the top of plunger spring 740 and common rail monomer are cased on the lower section of plunger 700
The bottom contact of ontology 400 is pumped, the bottom of plunger spring 740 is contacted with plunger spring seat 710.
A guide groove 721, guide groove 721 are provided on the side of the roller body mounting base 720 of each common rail monoblock pump
Axis direction along roller body mounting base 720 extends up and down.In the corresponding each roller body mounting base 720 of oil feed pump ontology 100
721 position of guide groove offers a stop screw hole 101, is internally screwed with a guide and limit screw 102 in stop screw hole 101, leads
It is deep into the inner end of stop screw 102 in the guide groove 721 of corresponding roller body mounting base 720, to roller body mounting base 720
Circumferentially rotate carry out limit and the axial movement of roller body mounting base 720 is oriented to.
A drain pan 452 is provided between the outer peripheral surface of plunger 700 and the inner peripheral surface of plunger cavity 443, in common rail monomer
Pump ontology 400 in be provided with an oil leak hole 453, the entrance of oil leak hole 453 is connected to drain pan 452, the entrance of oil leak hole 452 and
Low pressure oil oil outlet chamber 449 in common rail monoblock pump ontology 400 is connected to.
Oil outlet one-way valve 600 is mounted in oil outlet one-way valve mounting hole 442.Oil outlet one-way valve 600 includes delivery valve seat
610, oil outlet valve spring 620, delivery valve steel ball seat 630, steel ball 640.One first is offered on the central axes of delivery valve seat 610
Oil outlet 611.The second oil outlet 631 is offered on the central axes of delivery valve steel ball seat 630 and in delivery valve steel ball seat 630
Lower end offers at least one oblique oil outlet 632, and the excircle of delivery valve steel ball seat 630 is by the first cylindrical surface 633 and the second circle
Cylinder 634 forms, wherein the outer diameter on the second cylindrical surface 634 is less than 633 outer diameter of the first cylindrical surface, the outlet of oblique oil outlet 632
It is connected to the second oil outlet 631, the entrance of oblique oil outlet 632 is concordant with the second cylindrical surface 634.
Delivery valve seat 610, oil outlet valve spring 620, delivery valve steel ball seat 630, steel ball 640 are installed in oil outlet one-way valve peace
It fills in hole 442, wherein delivery valve seat 610 is located at topmost, and oil outlet valve spring 620 is located at the lower section of delivery valve seat 610, delivery valve
Steel ball seat 630 is located at the lower section of oil outlet valve spring 620, and steel ball 640 is located at the lower section of delivery valve steel ball seat 630；Delivery valve seat 610
Outer peripheral surface and oil outlet one-way valve mounting hole 442 inner peripheral surface be interference fitted, the first periphery 633 of delivery valve steel ball seat 630
It is slidably matched with the inner peripheral surface of oil outlet one-way valve mounting hole 442, the upper end of oil outlet valve spring 620 is against the bullet of delivery valve seat 610
Spring installs in hole 612, and the spring that the lower end of oil outlet valve spring 620 is against delivery valve steel ball seat 630 installs in hole 635.
Steel ball 640 opens and closes high pressure oil discharge passage 441, steel ball when closing, in oil outlet one-way valve 600
640 is in sealing contact with the sealing cone in cone seal hole 445；
Oil inlet valve member 500 includes inlet valve plug screw 510, oil inlet valve seat 520, oil inlet spool 530 and oil inlet valve spring
540；It is close that spool installation pilot hole 521, low pressure oil shoe cream room 522, oil inlet taper are provided on the central axis of oil inlet valve seat 520
Sealing of hole 523, wherein low pressure oil shoe cream room 522 be located at spool installation pilot hole 521 and oil inlet cone seal hole 523 between, into
Oil valve seat 520 has been arranged radially an at least low pressure fuel feed hole 524, the inner end of low pressure fuel feed hole 524 and low pressure oil shoe cream room 522
Connection, the outer end of low pressure fuel feed hole 524 are concordant with the outer peripheral surface of oil inlet valve seat 520.
One section of external screw thread 511 and one section of cylindrical surface 512 are set on the outer peripheral surface of oil inlet plug screw 510, cylindrical surface 512
Outer diameter is less than the outer diameter of external screw thread 511；The inner end of oil inlet plug screw 510 is provided with an oil inlet spool and makes a concession hole 513, oil inlet spool
It makes a concession hole 513 to extend to the outer extreme direction of oil inlet plug screw 510, has been arranged radially a fuel feed hole 514, oil inlet in oil inlet plug screw 510
The inner end in hole 514 is made a concession hole 513 with oil inlet spool and is connected to, the outer end and the cylindrical surface 512 on oil inlet plug screw 510 of fuel feed hole 514
Concordantly.
Oil inlet spool 530 is cylindrical-shaped structure, the interlude of oil inlet spool 530 is provided with a guide section 531, in oil inlet
The first end of spool 530 is provided with a sealing frustum 532, is provided in sealing frustum 532 towards the side of guide section 531
Conical seal (contact) face 533.
Guide section 531 in oil inlet spool 530 passes through the spool in oil inlet valve seat 520 and installs pilot hole 521, oil inlet spool
530 first end and second end is located at the both ends outside the installation pilot hole 521 of the spool in oil inlet valve seat 520, oil inlet spool
Cooperated between spool installation pilot hole 521 in guide section 531 in 530 and oil inlet valve seat 520 using couple pair.Oil inlet valve seat
520 first end is inserted into the oil inlet valve seat mounting hole 448 of common rail monoblock pump ontology 400, the external screw thread of oil inlet plug screw 510
511 screw in the inlet valve installation screw 450 of common rail monoblock pump ontology 400, the inner face and oil inlet valve seat of oil inlet plug screw 510
520 second end end face contact, the oil inlet spool that the second end of oil inlet spool 530 is deep into oil inlet plug screw 510 make a concession hole 513
In, oil inlet valve spring retainer 550 is installed in the second end of oil inlet spool 530,540 sets of oil inlet valve spring in oil inlet spool 530
Second end on, the first end of oil inlet valve spring 540 is against on the second end end face of oil inlet valve seat 520, oil inlet valve spring 540
Second end be against on oil inlet valve spring retainer 550,514 outer end of fuel feed hole on oil inlet spiral shell seat 510 and common rail monoblock pump ontology 400
In low pressure oil oil outlet chamber 449 be connected to；The sealing frustum 532 of 530 second end of oil inlet spool is located at the second low pressure oil oil discharge passage
Between 447 and oil inlet cone seal hole 523, when sealing frustum 532 on conical seal (contact) face 533 and oil inlet cone seal hole 523
Sealing cone it is in sealing contact when, sealing frustum 532 is by the low pressure oil shoe cream room 522 and the second low pressure oil in oil inlet valve seat 520
Channel between oil discharge passage 447 is closed；The outer end of low pressure fuel feed hole 520 goes out with the low pressure oil in common rail monoblock pump ontology 400
Oil pocket 449 is connected to.
The second sealing ring 560, the second sealing ring are provided between common rail monoblock pump ontology 400 and oil feed pump ontology 400
560 are located at the periphery of the second oil input channel 140 in oil feed pump ontology 100.
The working principle of the utility model is as follows:
Fuel oil from fuel tank through oil pipe, oil transfer pump 200 oil inlet to oil transfer pump 200, the fuel-displaced of oil transfer pump 200 passes through bavin
Oily oil inlet screw 310, diesel oil feeding metering valve 320, the first oil input channel 130 in oil feed pump ontology 100 and two the second oil inlets
Road 140 arrives at two common rail monoblock pumps, then fuel-displaced by the third oil input channel 451 in each common rail monoblock pump, low pressure oil
Chamber 449, oil inlet valve member 500, the second low pressure oil oil discharge passage 447, the first low pressure oil oil discharge passage 446 reach the common rail monomer
High pressure fuel chamber 444 in pump.The amount of fuel of the control supply high pressure fuel chamber 444 of diesel oil feeding metering valve 320, extra fuel oil
Fuel tank is returned to through pressure maintaining valve 330.
When plunger 700 in each common rail monoblock pump moves under the driving of plunger spring 740 from top dead centre down, at this time
Steel ball 640 in oil outlet one-way valve 600 seals under the action of oil outlet valve spring 620 with the sealing cone in cone seal hole 445
Contact, high pressure oil discharge passage 441 is closed.The suction that oil inlet spool 530 in oil inlet valve member 500 is formed in 700 downlink of plunger
It is moved under the action of power and oil inlet oil pressure to 444 direction of high pressure fuel chamber, the taper on the sealing frustum 532 of oil inlet spool 530
Sealing surface 533 and the sealing cone in the oil inlet cone seal hole 523 on oil inlet valve seat 520 separate, and make at oil inlet valve member 500
It is close in the taper on the sealing frustum 532 that the low-voltage fuel in opening state, low pressure oil oil outlet chamber 449 passes through oil inlet spool 530
Gap between the sealing cone in the oil inlet cone seal hole 523 on cover 533 and oil inlet valve seat 520 enters the second low pressure oil and goes out
In oily channel 447, then by the high pressure fuel chamber 444 in the first low pressure oil oil discharge passage 446 arrival common rail monoblock pump, thus
Complete oil-absorbing process.
Plunger 700 cam 180, roller body 730, roller body mounting base 720 driving under move upwards when, to high compression ignition
Fuel oil in oil pocket 444 is compressed, when the pressure in high pressure fuel chamber 444 is more than that input pressure and oil inlet valve spring 540 are made
When firmly, the oil inlet spool 530 in pressure-driven oil inlet valve member 500 in high pressure fuel chamber 444 is to far from high pressure fuel chamber
The movement of 444 directions makes the oil inlet on the conical seal (contact) face 533 and oil inlet valve seat 520 on the sealing frustum 532 of oil inlet spool 530
The sealing cone in cone seal hole 523 is in sealing contact, closes oil inlet valve member 500.But the fuel oil in high pressure fuel chamber 444 at this time
Insufficient pressure is to overcome oil outlet valve spring 620 and oil pipe intermediate fuel oil to the pressure of steel ball 640, so oil feed pump not fuel feeding.
Plunger 700 cam 180, roller body 730, roller body mounting base 720 driving under continue up when, plunger
Fuel oil in 700 pairs of high pressure fuel chambers 444 continues to compress, and the fuel pressure in high pressure fuel chamber 444 persistently rises, when
When fuel pressure overcomes pressure to steel ball 640 of oil outlet valve spring 620 and oil pipe intermediate fuel oil, steel ball 640 is opened, delivery valve
Component 600 is opened, and the high pressure fuel in high pressure fuel chamber 444 passes through high pressure oil discharge passage 441, oil outlet one-way valve mounting hole 442
Interior fuel-displaced valve member 600, high-pressure oil pipe enter in common rail pipe, and fuel oil is after common rail pipe pressure accumulation, then passes through high-pressure oil pipe point
It is assigned to each fuel injector.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these changes and improvements are both fallen within the scope of claimed invention.The requires of the utility model is protected
Shield range is defined by the appending claims and its equivalent thereof.
Claims (6)
1. a kind of co-rail fuel feed pump of oil inlet control characterized by comprising
One oil feed pump ontology, is arranged machine oil chamber in the oil feed pump ontology, and the machine oil chamber is divided into cam chamber and at least
One common rail monoblock pump installation cavity, all common rail monoblock pump installation cavitys be respectively positioned on the top of the cam chamber and with it is described convex
Chamber connection is taken turns, all common rail monoblock pump installation cavity parallel intervals are arranged in the oil feed pump ontology, all common rail monomers
The axis for pumping installation cavity is vertical with the axis of the cam chamber；A machine oil oil inlet is offered in the lower part of the oil feed pump ontology
Hole, the outlet of the machine oil fuel feed hole are connected to the machine oil chamber, are internally screwed with a machine oil oil inlet screw in the machine oil fuel feed hole；
The top of the oil feed pump ontology is provided with first oil input channel and at least one the second oil input channels, every one second oil input channel
Entrance be connected to and be mutually perpendicular to first oil input channel；An overflow is offered on the top of the oil feed pump ontology
Hole, the entrance of the overflow hole are connected to wherein second oil input channel, are internally screwed with an overflow screw in the overflow hole, described
Overflow screw is connected to by oil pipe with fuel tank；
The camshaft being mounted in the cam chamber, the two end axles of the camshaft are located on the oil feed pump ontology, described
The quantity interval that the common rail monoblock pump installation cavity is corresponded on camshaft is equipped with quantity with the common rail monoblock pump installation cavity
Identical cam, the corresponding common rail monoblock pump installation cavity of each cam；
It is mounted on the oil transfer pump of oil feed pump body lower part side, the oil transfer pump is worked by the camshaft actuated, described
The oil inlet of oil transfer pump is connected to by oil pipe with fuel tank；
The diesel oil feeding screw and diesel oil feeding metering valve of the oil feed pump body upper part are mounted on, on the diesel oil feeding screw
Oil inlet be connected to the oil outlet of the oil transfer pump by oil pipe, the oil outlet on the diesel oil feeding screw is located at the confession
Be connected in oil pump body and with the oil inlet for being similarly positioned in the intrinsic diesel oil feeding metering valve of the oil feed pump, the diesel oil into
The oil outlet of oil measurement valve is located in the oil feed pump ontology and is connected to first oil input channel；
It is mounted on the pressure maintaining valve of the oil feed pump body upper part, the entrance of the pressure maintaining valve is connected to first oil input channel；
An at least common rail monoblock pump, each common rail monoblock pump are mounted on corresponding common rail monoblock pump installation on the oil feed pump ontology
It is intracavitary；Each common rail monoblock pump includes:
The lower part of one common rail monoblock pump ontology, the common rail monoblock pump ontology is inserted into the common rail monoblock pump installation cavity, top
Outside the top of the prominent oil feed pump ontology, the common rail monoblock pump ontology is fastened on the oil feed pump ontology by fastener
On；It is close that first is provided between the outer peripheral surface of the common rail monoblock pump ontology and the inner peripheral surface of the common rail monoblock pump installation cavity
Seal；Be coaxially arranged on the central axes of the common rail monoblock pump ontology high pressure oil discharge passage, oil outlet one-way valve mounting hole and
Plunger cavity is provided with a high pressure fuel chamber, the top of the high pressure fuel chamber and the high extrusion at the top of the plunger cavity
The bottom in oily channel is connected to, and the top of the high pressure oil discharge passage is connected to the oil outlet one-way valve mounting hole and in the high pressure
A cone seal hole is provided at the top of oil discharge passage；The first low pressure is coaxially arranged on the top of the common rail monoblock pump ontology
Oily oil discharge passage, the second low pressure oil oil discharge passage, oil inlet valve seat mounting hole, low pressure oil oil outlet chamber and inlet valve installation screw, institute
State the first low pressure oil oil discharge passage, the second low pressure oil oil discharge passage, oil inlet valve seat mounting hole, low pressure oil oil outlet chamber and inlet valve peace
The central axes of dress screw hole common axis and the common rail monoblock pump ontology are mutually perpendicular to；Wherein first low pressure oil is fuel-displaced logical
The outlet in road is connected to high pressure fuel chamber, the entrance of the first low pressure oil oil discharge passage and the second low pressure oil oil discharge passage
Outlet, the entrance of the second low pressure oil oil discharge passage is connected to by oil inlet valve seat mounting hole with low pressure oil oil outlet chamber,
The inlet valve installation screw is connected to the low pressure oil oil outlet chamber；A third is additionally provided in the common rail monoblock pump ontology
Oil input channel, the outlet of the entrance of the third oil input channel and corresponding second oil input channel in the oil feed pump ontology are described
The outlet of third oil input channel is connected to the low pressure oil oil outlet chamber；
The middle upper section of one plunger, the plunger is inserted into the plunger cavity by the bottom of the plunger cavity, under the plunger
Section stretches out the plunger cavity by the bottom of the plunger cavity, a plunger spring seat is fixed in the bottom of the plunger, described
One roller body mounting base is installed on plunger spring seat, roller body, the roller body are installed in the roller body mounting base
It is contacted with the actuated by cams；Be cased with a plunger spring on the lower section of the plunger, the top of the plunger spring with it is described
The bottom of common rail monoblock pump ontology contacts, and the bottom of plunger spring and the plunger spring seated connection touch；
One is mounted on the oil outlet one-way valve in the oil outlet one-way valve mounting hole, and the steel ball in oil outlet one-way valve is to the high extrusion
Oily channel is opened and closed, when closing, the sealing cone of steel ball and the cone seal hole in the oil outlet one-way valve
It is in sealing contact；
One oil inlet valve member, the oil inlet valve member include inlet valve plug screw, oil inlet valve seat, oil inlet spool and oil inlet valve spring；
Spool installation pilot hole, low pressure oil shoe cream room, oil inlet cone seal hole are provided on the central axis of the oil inlet valve seat, wherein
The low pressure oil shoe cream room is located between spool installation pilot hole and oil inlet cone seal hole, in the diameter of the oil inlet valve seat
To an at least low pressure fuel feed hole is provided with, the inner end of the low pressure fuel feed hole is connected to the low pressure oil shoe cream room, described
The outer end of low pressure fuel feed hole is concordant with the outer peripheral surface of the oil inlet valve seat；It is arranged outside one section on the outer peripheral surface of the oil inlet plug screw
The outer diameter on screw thread and one section of cylindrical surface, the cylindrical surface is less than the externally threaded outer diameter, sets in the inner end of the oil inlet plug screw
It is equipped with an oil inlet spool and makes a concession hole, the oil inlet spool is made a concession hole extreme direction to outside the oil inlet plug screw and extended, in the oil inlet
Plug screw has been arranged radially a fuel feed hole, and the inner end of the fuel feed hole is made a concession hole with the oil inlet spool and is connected to, the fuel feed hole
Outer end it is concordant with the cylindrical surface on the oil inlet plug screw；The oil inlet spool is cylindrical-shaped structure, in the oil inlet spool
Interlude is provided with a guide section, the first end of the oil inlet spool is provided with a sealing frustum, in the sealed taper table top
The side of the guide section is provided with conical seal (contact) face；Guide section in the oil inlet spool passes through in the oil inlet valve seat
Spool install pilot hole, the first end and second end of the oil inlet spool be located at the spool in the oil inlet valve seat installation
Both ends outside pilot hole use between the spool installation pilot hole in the guide section and the oil inlet valve seat in the oil inlet spool
The cooperation of couple pair；The first end of the oil inlet valve seat is inserted into the oil inlet valve seat mounting hole of the common rail monoblock pump ontology, institute
State screwing into the inlet valve installation screw of the common rail monoblock pump ontology for oil inlet plug screw, the inner end of the oil inlet plug screw
Face is contacted with the second end end face of the oil inlet valve seat, and the second end of the oil inlet spool is deep into the oil inlet of the oil inlet plug screw
Spool is made a concession in hole, oil inlet valve spring retainer is equipped in the second end of the oil inlet spool, the inlet valve spring pocket is in institute
In the second end for stating oil inlet spool, the first end of the oil inlet valve spring is against on the second end end face of the oil inlet valve seat, institute
The second end for stating oil inlet valve spring is against on the oil inlet valve spring retainer, the oil inlet outer end of hole on the oil inlet spiral shell seat with it is described total
Low pressure oil oil outlet chamber connection in rail monoblock pump ontology；The sealing frustum of the oil inlet spool second end is located at second low pressure
Between oily oil discharge passage and oil inlet cone seal hole, when the conical seal (contact) face sealed on frustum and the oil inlet taper
When the sealing cone of sealing hole is in sealing contact, the sealing frustum is by the low pressure oil shoe cream room and described the in the oil inlet valve seat
Channel between two low pressure oil oil discharge passages is closed；In the outer end of the low pressure fuel feed hole and the common rail monoblock pump ontology
The connection of low pressure oil oil outlet chamber.
2. a kind of co-rail fuel feed pump of oil inlet control as described in claim 1, which is characterized in that the outer peripheral surface of the plunger with
It is provided with a drain pan between the inner peripheral surface of the plunger cavity, an oil leak hole, institute are provided in the common rail monoblock pump ontology
The entrance for stating oil leak hole is connected to the drain pan, the low pressure oil in the entrance of the oil leak hole and the common rail monoblock pump ontology
Oil outlet chamber connection.
3. a kind of co-rail fuel feed pump of oil inlet control as described in claim 1, which is characterized in that in each common rail monoblock pump sheet
The second sealing ring is provided between body and the oil feed pump ontology, second sealing ring is located at each in the oil feed pump ontology
The periphery of second oil input channel.
4. a kind of co-rail fuel feed pump of oil inlet control as described in claim 1, which is characterized in that the oil outlet one-way valve also wraps
Delivery valve seat, oil outlet valve spring, delivery valve steel ball seat are included, one first oil outlet is offered on the central axes of the delivery valve seat,
Offered on the central axes of the delivery valve steel ball seat the second oil outlet and the lower end of the delivery valve steel ball seat offer to
A few oblique oil outlet, the excircle of the delivery valve steel ball seat is made of the first cylindrical surface and the second cylindrical surface, wherein second
The outer diameter on cylindrical surface is less than first cylindrical surface outer diameter, and the outlet of the oblique oil outlet is connected to second oil outlet,
The entrance of the oblique oil outlet is concordant with second cylindrical surface；The delivery valve seat, oil outlet valve spring, delivery valve steel ball
Seat, steel ball are installed in the oil outlet one-way valve mounting hole, wherein the delivery valve seat is located at topmost, oil outlet valve spring position
In the lower section of the delivery valve seat, the delivery valve steel ball seat is located at the lower section of the oil outlet valve spring, and the steel ball is located at institute
State the lower section of delivery valve steel ball seat；The outer peripheral surface of the delivery valve seat and the inner peripheral surface interference of the oil outlet one-way valve mounting hole are matched
Close, the first periphery of the delivery valve steel ball seat and the inner peripheral surface of the oil outlet one-way valve mounting hole be slidably matched, it is described out
The spring that the upper end of oil valve spring is against the delivery valve seat installs in hole, and the lower end of the oil outlet valve spring is against described fuel-displaced
The spring of valve steel ball seat installs in hole.
5. a kind of co-rail fuel feed pump of oil inlet control as described in claim 1, which is characterized in that the oil transfer pump uses blade
Formula oil transfer pump.
6. a kind of co-rail fuel feed pump of oil inlet control as described in claim 1, which is characterized in that in each common rail monoblock pump
A guide groove is provided on the side of roller body mounting base, the guide groove is above and below the axis direction of the roller body mounting base
Extend, a stop screw hole is offered in the guiding groove location that the oil feed pump ontology corresponds to each roller body mounting base, in institute
It states stop screw hole and is internally screwed with a guide and limit screw, the inner end of the guide and limit screw is deep into corresponding roller body installation
In the guide groove of seat, circumferentially rotating for roller body mounting base limit and lead the axial movement of roller body mounting base
To.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721887523 | 2017-12-29 | ||
| CN2017218875238 | 2017-12-29 |
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| Publication Number | Publication Date |
|---|---|
| CN209261714U true CN209261714U (en) | 2019-08-16 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810299212.2A Active CN108425776B (en) | 2017-12-29 | 2018-04-04 | Common rail oil feed pump with oil inlet control function |
| CN201820475551.7U Withdrawn - After Issue CN209261714U (en) | 2017-12-29 | 2018-04-04 | A kind of co-rail fuel feed pump of oil inlet control |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810299212.2A Active CN108425776B (en) | 2017-12-29 | 2018-04-04 | Common rail oil feed pump with oil inlet control function |
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| CN (2) | CN108425776B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425776A (en) * | 2017-12-29 | 2018-08-21 | 南岳电控（衡阳）工业技术股份有限公司 | A kind of co-rail fuel feed pump of oil inlet control |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111102114A (en) * | 2019-12-31 | 2020-05-05 | 南岳电控（衡阳）工业技术股份有限公司 | Improved structure for preventing abrasion of roller of single-cylinder electric control pump |
| CN112648120A (en) * | 2020-12-23 | 2021-04-13 | 南岳电控（衡阳）工业技术股份有限公司 | Single-cylinder common-rail oil supply pump of blade-mounted oil transfer pump |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2934631Y (en) * | 2006-08-09 | 2007-08-15 | 无锡威孚集团有限公司 | Ball valve type high pressure common-rail oil injection pump |
| CN103089507B (en) * | 2013-01-09 | 2015-06-10 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Double-row six-cylinder radial type common-rail oil feed pump |
| CN203098115U (en) * | 2013-01-10 | 2013-07-31 | 无锡开普机械有限公司 | Oil inlet valve and oil outlet valve of common-rail pump |
| CN104329198B (en) * | 2014-11-03 | 2016-08-24 | 南岳电控（衡阳）工业技术股份有限公司 | A kind of in-line arrangement co-rail fuel feed pump controlling low pressure oil-feed |
| CN107191305A (en) * | 2017-06-30 | 2017-09-22 | 南岳电控（衡阳）工业技术股份有限公司 | Pump, rail integrated form co-rail fuel feed pump |
| CN108425776B (en) * | 2017-12-29 | 2024-03-26 | 南岳电控（衡阳）工业技术股份有限公司 | Common rail oil feed pump with oil inlet control function |
-
2018
- 2018-04-04 CN CN201810299212.2A patent/CN108425776B/en active Active
- 2018-04-04 CN CN201820475551.7U patent/CN209261714U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425776A (en) * | 2017-12-29 | 2018-08-21 | 南岳电控（衡阳）工业技术股份有限公司 | A kind of co-rail fuel feed pump of oil inlet control |
| CN108425776B (en) * | 2017-12-29 | 2024-03-26 | 南岳电控（衡阳）工业技术股份有限公司 | Common rail oil feed pump with oil inlet control function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108425776B (en) | 2024-03-26 |
| CN108425776A (en) | 2018-08-21 |
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