CN105888905A - Combined type high-pressure common-rail pump for single-cylinder diesel engine and assembling method of pump - Google Patents
Combined type high-pressure common-rail pump for single-cylinder diesel engine and assembling method of pump Download PDFInfo
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- CN105888905A CN105888905A CN201610447642.5A CN201610447642A CN105888905A CN 105888905 A CN105888905 A CN 105888905A CN 201610447642 A CN201610447642 A CN 201610447642A CN 105888905 A CN105888905 A CN 105888905A
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- oil
- pump
- common rail
- plunger
- single cylinder
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Classifications
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- 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
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- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention provides a combined type high-pressure common-rail pump for a single-cylinder diesel engine and an assembling method of the pump. The combined type high-pressure common-rail pump comprises a single-cylinder common-rail energy accumulator and a single-cylinder common-rail pump body which are fixedly connected into a whole in a sealed mode, integration of an oil pump and a common rail is achieved, an installation mode of the oil pump and the diesel engine is not changed, the combined type high-pressure common-rail pump can be directly installed and used on an existing diesel engine, and an installation hole system of an engine body of the diesel engine does not need to be additionally machined; meanwhile, a common-rail pipe connecting the common rail with the oil pump is omitted, the size of the high-pressure common-rail pump for the single-cylinder diesel engine can be reduced to the maximum extent, a proportional electromagnetic valve in the prior art is replaced with a high-speed electromagnetic valve, and the cost of each pump can be reduced by 50 yuan to 60 yuan; common-rail electronic injection can be directly conducted on the existing diesel engine for promotion and transformation, and by means of the combined type high-pressure common-rail pump, the single-cylinder diesel engine can reach the national four-stage emission standard. The assembling method is good in assembling process capability, the assembling accuracy is good, the assembling efficiency is high, and installed parts are neither more nor less.
Description
Technical field
The present invention relates to the combustion system of single cylinder diesel, particularly relate to the high pressure co-rail system of single cylinder diesel
Middle common rail pump assembly.
Background technology
Single cylinder diesel is because of reasons such as it are cheap, light for a long time, be widely used in stand-by power supply,
Agricultural machinery, water lifting machinery, engineering machinery, the every profession and trade such as peculiar to vessel, in recent years due to the row of single cylinder diesel
Zoom level falls behind, and the raising of national environmental protection emission request, domestic market share is progressively compressed；According to domestic
Combustion engine TIA data, within 2015, China's single cylinder diesel yield is at about 4,000,000,800 during peak value
About ten thousand, single cylinder engine recoverable amount is at about 20,000,000；On the one hand, single cylinder diesel industry entirety discharge
Level falls behind, and causes it to discharge substantial amounts of harmful gas every year in air；On the other hand, discharge water is fallen behind
Putting down makes it gradually be repelled by market, is badly in need of the update of technology.
China will carry out non-rice habitats state three discharge standard the end of the year 2016 comprehensively, it is contemplated that within 2018, will implement non-
Road state 4 discharge standard, wherein single cylinder diesel is just within the scope of the restriction of this regulation.
After Abgasgesetz upgrading, the common rail system of single cylinder diesel will become Single Cylinder Diesel Engine Emission technology upgrading
Essence solution；In published single cylinder diesel common rail system technical scheme, Machinery Ministry subpackage
Containing common rail pump, common rail pipe, the big parts of fuel injector three, high-pressure oil pipe between these three big parts, is used to connect.Though
The technical scheme of right this replacement is capable of the high-pressure common rail EFI of single cylinder diesel, but, existing list
The common rail system cost of cylinder diesel is the highest, and volume is the biggest, it is impossible to directly apply on existing single cylinder diesel.
Patent of invention 201610025226.6 discloses " integrated diesel machine high-pressure common rail fuel oil injection system
System high-pressure fuel injection pump assembly ", it still continues routine techniques thinking, and system mechanics part is divided into three big parts,
High-pressure oil pipe is used to connect each other；In the invention, the tappet body in described high-pressure fuel injection pump assembly guides
The body relying on diesel engine, i.e. diesel engine must redesign, and needs to leave special pilot hole on body,
The body requirement of diesel engine redesigns processing, and whole machining production line must put into again, puts into the biggest；
Meanwhile, the fuel-flow control mode adoption rate electromagnetic valve inlet metering of this high-pressure fuel injection pump assembly controls, this
The price of electromagnetic valve is higher.
" common-rail high-pressure pump of pump rail one " is disclosed in utility model patent ZL201120052744.X,
Described oil pump is applied to multi-cylinder diesel engine oil supply system；The driving of its oil pump is performed by self camshaft, oil pump
Bulky, single cylinder diesel cannot directly be applied, can not quote, at this utility model mesohigh
Original paper plunger bushing uses the design of indent end face structure, manufacturability extreme difference, has both improve processing, the technology of assembling
Difficulty, increases cost, can not support the use with the body of existing single cylinder diesel again, to existing single cylinder bavin
The substituting extreme difference of the injection pump of oil machine.Existing single cylinder diesel produces commercial city and does not approves, less accepts.
Summary of the invention:
It is an object of the invention to provide a kind of single cylinder diesel combined type high voltage common rail pump and assembly method thereof,
Described single cylinder diesel combined type high voltage common rail pump is the feature design according to existing single cylinder diesel, can be
Directly use on existing diesel, have strong adaptability, structure through gathering, the big feature of low cost, Technology Potential.
A kind of single cylinder diesel combined type high voltage common rail pump, is characterized in that: include single cylinder common rail accumulator and
After single cylinder common rail pump, the oil inlet end of single cylinder common rail accumulator and the oil outlet end docking of single cylinder common rail pump hermetically admittedly
Surely linking into an integrated entity, described single cylinder common rail accumulator includes common rail body, level pressure oil road, pressure accumulation cavity volume, determines
Be pressed into oil duct, pressure transducer and unidirectional go out oil pocket, pressure accumulation cavity volume is arranged in common rail body, level pressure oil road,
Level pressure oil input channel, pressure transducer with unidirectional go out oil pocket be all connected with pressure accumulation cavity volume, wherein, level pressure is fuel-displaced
Road, level pressure oil input channel and unidirectional go out oil pocket be coaxially disposed；Described single cylinder common rail pump include the pump housing, tappet body,
Under plunger spring, seat, plunger spring, plunger, plunger guide set, radial direction seal ring, high pressure chest, oil duct divide
Orchestration, steel ball, inlet valve spring, delivery valve seat, fuel-displaced spool, oil outlet valve spring, oil outlet valve spring seat
And high-speed electromagnetic valve, it is provided with oil outlet at the center of delivery valve seat, is provided with steel ball in the lower surface of delivery valve seat
Cavity volume, is provided with upside oil input channel in the side of delivery valve seat；It is provided with upper end open at the center of oil duct allotter
Oil-feed blind hole, be provided with in the side of oil duct allotter downside oil input channel, in the downside oil-feed of oil duct allotter
Lower end, road is provided with horizontal oil input channel, is provided with vertical oil duct between the upper surface of oil duct allotter and lower surface,
Be provided with the recessed oil pit of oil-feed in the lower surface of oil duct allotter, vertical oil duct oil pit recessed with oil-feed is connected；Described
The pump housing include butt hole, threaded connection hole, mating holes, transitional pore, lower pilot hole, electromagnetic valve installing hole and
Turning to oil input channel, butt hole, threaded connection hole, mating holes, transitional pore, lower pilot hole are the most successively
Coaxial distribution；Plunger guide set is rotated with in the threaded connection hole of the pump housing, and oil duct allotter and delivery valve seat set
Putting in butt hole, and delivery valve seat is positioned at the top of oil duct allotter, steel ball is arranged on delivery valve seat and oil
Between road allotter, delivery valve core retainer plate is contained in the oil outlet of delivery valve seat, and inlet valve spring is arranged on fuel-displaced
Between spool lower end and steel ball, the lower end of oil outlet valve spring is sleeved on the epimere of fuel-displaced spool, oil outlet valve spring
In the endoporus of the upper end that cover for seat is contained in oil outlet valve spring, under plunger spring, cover for seat is contained on plunger and is positioned at plunger
Lower end, plunger bushing be contained in plunger guide set pilot hole in, plunger spring be arranged on plunger guide set and post
Between plug spring lower seat, tappet body is sleeved in the lower pilot hole of the pump housing, and by the spacer pin liter to tappet body
Fall stroke carries out spacing, and spacer pin is spacing by spacing jump ring, and the lower end of plunger and very cylinders contact, at plunger
Between fairlead and the mating holes of the pump housing, compartment of terrain is provided with two radial direction seal rings, entering of single cylinder common rail accumulator
It is that the oil inlet end of single cylinder common rail accumulator is sleeved on that the oil outlet end of oil end and single cylinder common rail pump seals docking structure
In the butt hole of the pump housing, the joint at common rail body Yu the pump housing is provided with end-face seal ring.
The assembly method of described single cylinder diesel combined type high voltage common rail pump is as follows:
First, the assembling of single cylinder common rail pump:
Step 1, is first arranged on radial direction seal ring in the default seal groove of plunger guide set cylindrical, then by post
Plug fairlead screws in the threaded connection hole in the pump housing, makes to form two footpaths, road between radial direction seal ring and mating holes
Seal；
Step 2, by plunger spring from the mating holes of the lower loading pump housing, transitional pore, the lower sector hole group of lower pilot hole
In, the epimere inner hole sleeve of plunger spring is contained on the spring core print seat of plunger guide set hypomere；
Step 3, is contained in cover for seat under plunger spring on the shaft shoulder of plunger lower end, is then sleeved on by the epimere of plunger
In the centre bore of plunger guide set, then tappet body is pressed in the lower pilot hole of the pump housing, and with spacer pin to very
Cylinder moves axially stroke limit, and spacer pin is by spacing jump ring axial limiting；
Step 4, puts into oil duct allotter in the butt hole of the pump housing, then places into steel ball and delivery valve seat,
And the steel ball cavity volume on delivery valve seat is down, the oil outlet of delivery valve seat is put into inlet valve spring, then will
The hypomere of fuel-displaced spool inserts in the oil outlet of delivery valve seat, and oil outlet valve spring is sleeved on fuel-displaced spool epimere
Mandrel on；
Step 5, is contained in oil outlet valve spring cover for seat in the upper end endoporus of oil outlet valve spring；
Step 6, is screwed in electromagnetic valve installing hole hermetically by high-speed electromagnetic valve；
So, the assembling of single cylinder common rail pump terminates；
Second, the assembling of described single cylinder common rail accumulator, will overlap on the oil inlet end cylindrical of single cylinder common rail accumulator
Dress end-face seal ring, is sleeved on oil inlet end in the butt hole of the pump housing, more so at common rail body and the pump housing
Joint be the formation of end face seal.
This assembly method assembly process process is good, and not only assembly precision is good, and efficiency of assembling is high, and part is not
Can fill morely, also will not fill less.
The work process of single cylinder diesel combined type high voltage common rail pump is as follows:
Oil-absorbing process: when camshaft is in descending branch, plunger spring drive seat under tappet body and plunger spring,
Plunger DL synchronization, now high pressure chest volume increases and forms negative pressure, the recessed oil of oil-feed of oil duct allotter lower end
Hole is connected with the cavity volume of steel ball by vertical oil duct, and now high-speed electromagnetic valve energising is in open mode, combustion
Oil, by turning to oil input channel, high-speed electromagnetic valve to enter in the butt hole of the pump housing, then passes through the upper of delivery valve seat
The horizontal oil input channel of downside oil input channel entrance of side oil input channel and oil duct allotter and oil-feed blind hole push steel ball open, then
Enter steel ball cavity and suck high pressure chest from vertical oil duct；
Force feed process: when camshaft is in ascent stage, tappet body promotes and moves on plunger lower end, plunger spring
Being compressed under the effect of seat under plunger spring, now, high pressure chest smaller volume, oil pressure raises, high pressure chest
In the fuel oil attracted deposit then enter steel ball cavity volume from the recessed oil pit of oil-feed, vertical oil duct, steel ball is at pressurized fuel
Being pressed together on the opening part of oil-feed blind hole effect lower seal, close oil-feed blind hole, pressurized fuel promotes delivery valve
Move on core, so that fuel-displaced spool is in opening, the pressurized fuel level pressure by single cylinder common rail accumulator
Oil input channel enters in pressure accumulation cavity volume, and pressure transducer carries out observing and controlling to oil pressure in pressure accumulation cavity volume, when oil pressure reaches
During predetermined value, input fueling injection equipment from level pressure oil road, complete force feed process.
The present invention is by oil pump and the integration of common rail, and oil pump is constant with the mounting means of diesel engine, can be existing
Use it is mounted directly, it is not necessary to the installing hole system of the body of diesel engine is additionally processed on diesel engine, with
Time cancel the common rail pipe connecting common rail and oil pump, moreover it is possible to reduce single cylinder diesel high voltage common rail pump substantially
Volume, uses high-speed electromagnetic valve to replace proportional solenoid in prior art, and cost can reduce by 10%～15%/
Platform；In the present invention, the lifting moving of tappet body guides and location structure is arranged in pump housing endoporus, right
Diesel-engine body is without particular design requirement；It can directly carry out common rail EFI Promotion Transformation to existing diesel,
Carrying out state three standard environment protection emission for existing single cylinder diesel is the most economically viable technical scheme, uses
The present invention can make single cylinder diesel reach state four discharge standard.
In the present invention high voltage device plunger guide set is carried out separate design with the pump housing and become multistage cylindric knot
Structure, this structure circumference homogenizing is symmetrical, beneficially the high accuracy processing of later stage plunger bushing mesopore；Compare more existing
Polymorphic structure in technology, needs to do counterweight and processes, and technology difficulty is substantially reduced；Tappet body, plunger spring
Etc. movement parts, interior pack arrangement designs, it is to avoid produce with parts and components of diesel engine collide, interfere, affect can
Can property.The compact conformation of the present invention, low cost, good manufacturability, stable performance, be applicable to single cylinder diesel
The high pressure co-rail system oil feed pump assembly used.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of single cylinder common rail accumulator in the present invention；
Fig. 3 is the structural representation of single cylinder common rail pump；
Fig. 4 is the structural representation of the pump housing；
Fig. 5 is the structural representation of delivery valve seat；
Fig. 6 is the structural representation of oil duct allotter；
In figure: 1-single cylinder common rail accumulator；2-single cylinder common rail pump；3-end-face seal ring；11-common rail body；
12-level pressure oil road；13-pressure accumulation cavity volume；14-level pressure oil input channel；15-pressure transducer；16-unidirectional go out oil pocket；
17-oil inlet end；The 21-pump housing；22-tappet body；Seat under 23-plunger spring；24-plunger spring；25-plunger；
26-plunger guide set；27-radial direction seal ring；28-high pressure chest；29-oil duct allotter；30-steel ball；31-enters
Fuel tap spring；32-delivery valve seat；The fuel-displaced spool of 33-；34-oil outlet valve spring；35-oil outlet valve spring seat；36-
High-speed electromagnetic valve；37-spacer pin；The spacing jump ring of 38-；211-butt hole；212-threaded connection hole；213-joins
Close hole；214-transitional pore；Pilot hole under 215-；216-electromagnetic valve installing hole；217-turns to oil input channel；
291-oil-feed blind hole；Oil input channel on the downside of 292-；The horizontal oil input channel of 293-；The vertical oil duct of 294-；295-oil-feed is recessed
Oil pit；321-oil outlet；322-steel ball cavity volume；Oil input channel on the upside of 323-.
Detailed description of the invention:
The detailed description of the invention of the present invention is described below in conjunction with the accompanying drawings:
Embodiment 1: a kind of single cylinder diesel combined type high voltage common rail pump, as shown in Fig. 1～Fig. 6, it by
Single cylinder common rail accumulator 1 and single cylinder common rail pump 2 form, and single cylinder common rail accumulator 1 and single cylinder common rail pump 2 are led to
Cross securing member and end-face seal ring 3 is fixedly connected into one；Described single cylinder common rail accumulator 1 includes common rail body
11, level pressure oil road 12, pressure accumulation cavity volume 13, level pressure oil input channel 14, pressure transducer 15 and unidirectional fuel-displaced
Chamber 16, pressure accumulation cavity volume 13 is arranged in common rail body 11, level pressure oil road 12, level pressure oil input channel 14, pressure
Sensor 15 with unidirectional go out oil pocket 16 be all connected with pressure accumulation cavity volume 13, wherein, level pressure oil road 12, fixed
Be pressed into oil duct 14 and unidirectional go out oil pocket 16 be coaxially disposed；Described single cylinder common rail pump 2 includes the pump housing 21, tappet
Seat 23, plunger spring 24, plunger 25, plunger guide set 26, radial direction seal ring under body 22, plunger spring
27, high pressure chest 28, oil duct allotter 29, steel ball 30, inlet valve spring 31, delivery valve seat 32, fuel-displaced
Spool 33, oil outlet valve spring 34, oil outlet valve spring seat 35 and high-speed electromagnetic valve 36, at delivery valve seat 32
Center is provided with oil outlet 321, is provided with steel ball cavity volume 322 in the lower surface of delivery valve seat 32, at delivery valve seat
The side of 32 is provided with upside oil input channel 323；The oil-feed being provided with upper end open at the center of oil duct allotter 29 is blind
Hole 291, be provided with in the side of oil duct allotter 29 downside oil input channel 292, in the downside of oil duct allotter 29
Oil input channel 292 lower end is provided with horizontal oil input channel 293, between the upper surface and lower surface of oil duct allotter 29
It is provided with vertical oil duct 294, is provided with the recessed oil pit of oil-feed 295, vertical oil duct in the lower surface of oil duct allotter 29
294 oil pits 295 recessed with oil-feed are connected；The described pump housing 21 include butt hole 211, threaded connection hole 212,
Mating holes 213, transitional pore 214, lower pilot hole 215, electromagnetic valve installing hole 216 and turn to oil input channel 217,
Butt hole 211, threaded connection hole 212, mating holes 213, transitional pore 214 and lower pilot hole 215 to
Under be sequentially coaxially distributed；Plunger guide set 26 is rotated with in the threaded connection hole 212 of the pump housing 21, and oil duct divides
Orchestration 29 and delivery valve seat 32 are arranged in butt hole 211, and delivery valve seat 32 is positioned at oil duct allotter 29
Top, steel ball 30 is arranged between delivery valve seat 32 and oil duct allotter 29, and fuel-displaced spool 33 is set with
In the oil outlet 321 of delivery valve seat 32, inlet valve spring 31 is arranged on fuel-displaced spool 33 lower end and steel ball
Between 30, the lower end of oil outlet valve spring 34 is sleeved on the epimere of fuel-displaced spool 33, and oil outlet valve spring seat 35 overlaps
In the endoporus of the upper end being contained in oil outlet valve spring 34, under plunger spring, seat 23 is sleeved on plunger 25 and is positioned at
The lower end of plunger 25, plunger 25 is sleeved in the pilot hole of plunger guide set 26, and plunger spring 24 is arranged
Under plunger guide set 26 and plunger spring between seat 23, tappet body 22 is sleeved on the lower guiding of the pump housing 21
In hole 215, and being carried out spacing by spacer pin 37 to the lifting travel of tappet body 22, spacer pin 37 is by spacing
Jump ring 38 is spacing, and the lower end of plunger 25 contacts with tappet body 22；At plunger guide set 26 and the pump housing 21
Two radial direction seal rings 27 it are provided with between mating holes 213.
Embodiments of the present invention are a lot, if use with same principle of the present invention other etc. function replacement
All schemes all belong to protection scope of the present invention.
Claims (2)
1. a single cylinder diesel combined type high voltage common rail pump, is characterized in that: include single cylinder common rail accumulation of energy
Device (1) and single cylinder common rail pump (2), the oil inlet end of single cylinder common rail accumulator (1) and single cylinder common rail pump (2)
Oil outlet end docking after be fixedly connected into hermetically one, described single cylinder common rail accumulator (1) includes common rail body
(11), level pressure oil road (12), pressure accumulation cavity volume (13), level pressure oil input channel (14), pressure transducer (15)
With unidirectional go out oil pocket (16), in pressure accumulation cavity volume (13) is arranged on common rail body (11), level pressure oil road (12),
Level pressure oil input channel (14), pressure transducer (15) and unidirectional go out oil pocket (16) all with pressure accumulation cavity volume (13)
Be connected, wherein, level pressure oil road (12), level pressure oil input channel (14) and unidirectional go out oil pocket (16) coaxial
Arrange；Described single cylinder common rail pump (2) include seat (23) under the pump housing (21), tappet body (22), plunger spring,
Plunger spring (24), plunger (25), plunger guide set (26), radial direction seal ring (27), high pressure chest (28),
Oil duct allotter (29), steel ball (30), inlet valve spring (31), delivery valve seat (32), fuel-displaced spool
(33), oil outlet valve spring (34), oil outlet valve spring seat (35) and high-speed electromagnetic valve (36), at delivery valve
The center of seat (32) is provided with oil outlet (321), is provided with steel ball cavity volume in the lower surface of delivery valve seat (32)
(322), the side at delivery valve seat (32) is provided with upside oil input channel (323)；In oil duct allotter (29)
Center be provided with upper end open oil-feed blind hole (291), be provided with in the side of oil duct allotter (29) downside
Oil input channel (292), is provided with horizontal oil input channel in downside oil input channel (292) lower end of oil duct allotter (29)
(293), between the upper surface and lower surface of oil duct allotter (29), it is provided with vertical oil duct (294),
The lower surface of oil duct allotter (29) is provided with the recessed oil pit of oil-feed (295), and vertical oil duct (294) is recessed with oil-feed
Oil pit (295) is connected；The described pump housing (21) include butt hole (211), threaded connection hole (212),
Mating holes (213), transitional pore (214), lower pilot hole (215), electromagnetic valve installing hole (216) and turn to
Oil input channel (217), butt hole (211), threaded connection hole (212), mating holes (213), transitional pore (214),
Lower pilot hole (215) is the most sequentially coaxially distributed；Plunger guide set (26) is rotated with in the pump housing (21)
Threaded connection hole (212) in, oil duct allotter (29) and delivery valve seat (32) are arranged on butt hole (211)
In, and delivery valve seat (32) is positioned at the top of oil duct allotter (29), steel ball (30) is arranged on fuel-displaced
Between valve seat (32) and oil duct allotter (29), fuel-displaced spool (33) is sleeved on delivery valve seat (32)
Oil outlet (321) in, inlet valve spring (31) is arranged on fuel-displaced spool (33) lower end and steel ball (30)
Between, the lower end of oil outlet valve spring (34) is sleeved on the epimere of fuel-displaced spool (33), oil outlet valve spring seat
(35), in the endoporus of the upper end being sleeved on oil outlet valve spring (34), under plunger spring, seat (23) is sleeved on
Plunger (25) is gone up and is positioned at the lower end of plunger (25), and plunger (25) is sleeved on plunger guide set (26)
Pilot hole in, plunger spring (24) is arranged on seat (23) under plunger guide set (26) and plunger spring
Between, tappet body (22) is sleeved in the lower pilot hole (215) of the pump housing (21), and by spacer pin (37)
Carrying out spacing to the lifting travel of tappet body (22), spacer pin (37) is spacing by spacing jump ring (38),
The lower end of plunger (25) contacts with tappet body (22), at plunger guide set (26) and the pump housing (21)
Between mating holes (213), compartment of terrain is provided with two radial direction seal rings (27), single cylinder common rail accumulator (1)
The oil outlet end of oil inlet end and single cylinder common rail pump (2) seals docking structure, single cylinder common rail accumulator (1)
Oil inlet end (17) is sleeved in the butt hole (211) of the pump housing (21), at common rail body (11) and the pump housing (21)
Joint be provided with end-face seal ring (3).
2. described in claim 1, the assembly method of single cylinder diesel combined type high voltage common rail pump is as follows:
First, the assembling of single cylinder common rail pump:
Step 1, is first arranged on the default seal groove of plunger guide set (26) cylindrical by radial direction seal ring (27)
In, then plunger guide set (26) is screwed in the threaded connection hole (212) in the pump housing (21), make footpath
Seal to forming two footpaths, road between sealing ring (27) and mating holes (213)；
Step 2, by plunger spring (24) from the mating holes (213) of the lower loading pump housing (21), transitional pore (214),
In the lower sector hole group of lower pilot hole (215), the epimere inner hole sleeve of plunger spring (24) is contained in plunger guide set
(26) on the spring core print seat of hypomere；
Step 3, is sleeved on seat under plunger spring (23) on the shaft shoulder of plunger (25) lower end, then by plunger
(25) epimere is sleeved in the centre bore of plunger guide set (26), then tappet body (22) is pressed into pump
In the lower pilot hole (215) of body (21), and with spacer pin (37), tappet body (22) is axially moved
Dynamic stroke limit, spacer pin (37) is by spacing jump ring (38) axial limiting；
Step 4, puts in the butt hole (211) of the pump housing (21), the most again by oil duct allotter (29)
Put into steel ball cavity volume (322) court on steel ball (30) and delivery valve seat (32), and delivery valve seat (32)
Under, the oil outlet (321) of delivery valve seat (32) is put into inlet valve spring (31), then by delivery valve
The hypomere of core (33) inserts in the oil outlet (321) of delivery valve seat (32), by oil outlet valve spring (34)
It is sleeved on the mandrel of fuel-displaced spool (33) epimere；
Step 5, is sleeved on oil outlet valve spring seat (35) in the upper end endoporus of oil outlet valve spring (34)；
Step 6, is screwed in electromagnetic valve installing hole (216) hermetically by high-speed electromagnetic valve (36)；So,
The assembling of single cylinder common rail pump (2) terminates；
Second, the assembling of described single cylinder common rail accumulator, by the oil inlet end (17) of single cylinder common rail accumulator (1)
It is set with end-face seal ring (3) on cylindrical, oil inlet end (17) is sleeved on the docking of the pump housing (21) the most again
In hole (211), so joint at common rail body (11) Yu the pump housing (21) is the formation of end face seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610447642.5A CN105888905A (en) | 2016-06-18 | 2016-06-18 | Combined type high-pressure common-rail pump for single-cylinder diesel engine and assembling method of pump |
Applications Claiming Priority (1)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989730A (en) * | 2017-12-28 | 2018-05-04 | 北京亚新科天纬油泵油嘴股份有限公司 | A kind of high voltage common rail pump and for its into oil outlet valve component |
| CN108798962A (en) * | 2018-05-07 | 2018-11-13 | 江阴林格科技有限公司 | Fuel metering valve preparation process |
| CN109723587A (en) * | 2018-12-29 | 2019-05-07 | 南岳电控（衡阳）工业技术股份有限公司 | A kind of pressure accumulation cavate single cylinder co-rail fuel feed pump for common rail system |
| CN110748446A (en) * | 2019-11-27 | 2020-02-04 | 英嘉动力科技无锡有限公司 | Common rail high-pressure oil inlet and outlet valve assembly and common rail high-pressure oil supply pump |
| EP3819492A1 (en) * | 2019-11-08 | 2021-05-12 | Chongqing Hongjiang Machinery Co., Ltd. | Electrically-controlled monolithic high-pressure oil pump for marine low-speed engine |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004218547A (en) * | 2003-01-15 | 2004-08-05 | Bosch Automotive Systems Corp | High pressure fuel pump |
| CN2934630Y (en) * | 2006-08-09 | 2007-08-15 | 无锡威孚集团有限公司 | High pressure common-rail oil injection pump with cooling oil passage |
| JP2010065638A (en) * | 2008-09-12 | 2010-03-25 | Bosch Corp | Accumulator fuel supply system for liquefied gas fuel, and high-pressure pump for liquefied gas fuel |
| JP2010112303A (en) * | 2008-11-07 | 2010-05-20 | Bosch Corp | Fuel supply pump |
| CN202012427U (en) * | 2011-03-02 | 2011-10-19 | 无锡威孚高科技集团股份有限公司 | Common-rail high-pressure pump with integrated pump and rail |
| US20120145131A1 (en) * | 2010-12-10 | 2012-06-14 | Denso Corporation | Fuel supply pump |
| CN103189649A (en) * | 2010-08-09 | 2013-07-03 | 博世株式会社 | High pressure pump |
| CN104018968A (en) * | 2013-03-01 | 2014-09-03 | 罗伯特·博世有限公司 | High-pressure oil supply pump and diesel engine with same |
-
2016
- 2016-06-18 CN CN201610447642.5A patent/CN105888905A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004218547A (en) * | 2003-01-15 | 2004-08-05 | Bosch Automotive Systems Corp | High pressure fuel pump |
| CN2934630Y (en) * | 2006-08-09 | 2007-08-15 | 无锡威孚集团有限公司 | High pressure common-rail oil injection pump with cooling oil passage |
| JP2010065638A (en) * | 2008-09-12 | 2010-03-25 | Bosch Corp | Accumulator fuel supply system for liquefied gas fuel, and high-pressure pump for liquefied gas fuel |
| JP2010112303A (en) * | 2008-11-07 | 2010-05-20 | Bosch Corp | Fuel supply pump |
| CN103189649A (en) * | 2010-08-09 | 2013-07-03 | 博世株式会社 | High pressure pump |
| US20120145131A1 (en) * | 2010-12-10 | 2012-06-14 | Denso Corporation | Fuel supply pump |
| CN202012427U (en) * | 2011-03-02 | 2011-10-19 | 无锡威孚高科技集团股份有限公司 | Common-rail high-pressure pump with integrated pump and rail |
| CN104018968A (en) * | 2013-03-01 | 2014-09-03 | 罗伯特·博世有限公司 | High-pressure oil supply pump and diesel engine with same |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989730A (en) * | 2017-12-28 | 2018-05-04 | 北京亚新科天纬油泵油嘴股份有限公司 | A kind of high voltage common rail pump and for its into oil outlet valve component |
| CN108798962A (en) * | 2018-05-07 | 2018-11-13 | 江阴林格科技有限公司 | Fuel metering valve preparation process |
| CN109723587A (en) * | 2018-12-29 | 2019-05-07 | 南岳电控（衡阳）工业技术股份有限公司 | A kind of pressure accumulation cavate single cylinder co-rail fuel feed pump for common rail system |
| CN109723587B (en) * | 2018-12-29 | 2023-08-29 | 南岳电控（衡阳）工业技术股份有限公司 | Pressure accumulation cavity type single-cylinder common rail oil feed pump for common rail system |
| EP3819492A1 (en) * | 2019-11-08 | 2021-05-12 | Chongqing Hongjiang Machinery Co., Ltd. | Electrically-controlled monolithic high-pressure oil pump for marine low-speed engine |
| CN110748446A (en) * | 2019-11-27 | 2020-02-04 | 英嘉动力科技无锡有限公司 | Common rail high-pressure oil inlet and outlet valve assembly and common rail high-pressure oil supply pump |
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