CN207989206U - The voltage stabilizing common rail pipe of high-pressure common-rail fuel system and industrial air-cooled diesel engine - Google Patents
The voltage stabilizing common rail pipe of high-pressure common-rail fuel system and industrial air-cooled diesel engine Download PDFInfo
- Publication number
- CN207989206U CN207989206U CN201721817562.0U CN201721817562U CN207989206U CN 207989206 U CN207989206 U CN 207989206U CN 201721817562 U CN201721817562 U CN 201721817562U CN 207989206 U CN207989206 U CN 207989206U
- Authority
- CN
- China
- Prior art keywords
- common rail
- pressure
- oil
- voltage stabilizing
- common
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model provides a kind of the voltage stabilizing common rail pipe and industry air-cooled diesel engine of high-pressure common-rail fuel system, the voltage stabilizing common rail pipe includes common rail tube body, the common rail tube body is equipped with the pressure sensor for detecting common rail tube body internal pressure power, the relief valve that can be automatically reset of safety relief when for pressure limit, oil inlet for connecting high-pressure oil feed pipeline and several oil outlets for connecting fuel injector, pressurized cylinder is installed on the common rail tube body, the industry air-cooled diesel engine includes common rail pipe and is separately connected several fuel injectors of corresponding oil outlet on the common rail pipe, the injector nozzle matching parts of the fuel injector include valve body and the needle that can be moved axially in the valve body.The utility model is suitable for industrial air-cooled diesel engine, is conducive to the abundant burning of fuel oil, reduces carbon distribution, improves the power performance of engine, reduces gas pollutant discharge capacity and noise.
Description
The utility model be the applying date be on April 6th, 2017, application No. is 201720352699.7, invention and created names
For the divisional application of the utility application of high-pressure common-rail fuel system injector nozzle matching parts and related industries air-cooled diesel engine.
Technical field
The utility model is related to a kind of voltage stabilizing common rail pipes of high-pressure common-rail fuel system, further relate to a kind of this using being equipped with
The industrial air-cooled diesel engine of the high-pressure common-rail fuel system of voltage stabilizing common rail pipe, this diesel engine can be mainly generating set, water pump
And engineering machinery etc. provides power output, belongs to industrial diesel engine technical field.
Background technology
Fuel system is four big system of diesel engine（Fuel system, lubricating system, starting system, cooling system）With two big machines
Structure（Valve actuating mechanism, toggle）One of, the dynamic property, economy and emission performance of diesel engine are played vital
Effect.With the increasingly strict requirement of emission regulation, fuel system has obtained development at full speed.In order to cope with non-rice habitats third rank
The requirement of section discharge standard, being presently available for several main technological routes of industrial diesel engine fuel system transformation is respectively：Machine
Tool pump+EGR（Exhaust gas recycles）, automatically controlled VE pump, EUP（Electronically controlled unit pump）And high pressure co-rail system, first two mode is to hair
The change of motivation is smaller, and at low cost；Latter two scheme need to be modified the combustion chamber of engine, at present industry air-cooled diesel
The basic fundamental route that machine field uses is mechanical pump+EGR, and cost is higher.
High-pressure common-rail fuel system be applied in diesel engine of vehicle and show smaller gas pollutant discharge,
Many advantages in terms of reducing noise and improving engine performance, but so far, but rarely have in industrial air-cooled diesel engine and answer
With.It is that existing injector nozzle matching parts are uncomfortable to interfere high-pressure common-rail fuel system to be applied to a key factor of industrial air-cooled diesel engine
In the operating condition of high-pressure common-rail fuel system, due to the change of fuel pressure and system control mode, part fuel particles will
It is directly injected on Engine Cylinder Wall, also part fuel particles are bonded in valve body under internal vortex and negative pressure Involving velocity
Front-end surface, these, which are attached to the fuel particles on casing wall and valve body, cannot fully burn and be easily formed carbon distribution, while to hair
The power performance and noise of motivation also generate certain negative effect, therefore, how to improve the design of injector nozzle matching parts, are allowed to suitable
Should in the operating condition of high-pressure common rail, give full play of high-pressure common-rail fuel system in the excellent of environmental protection and power performance etc.
Gesture is that high-pressure common-rail fuel system is applied to the critical issue that industrial air-cooled diesel engine must solve.
In addition, based on the considerations of cost, the common rail pipe voltage stabilizing technique for being currently used for diesel engine of vehicle is also unsuitable for industrial wind
Cold diesel engine.
Utility model content
To overcome the drawbacks described above of the prior art, it is total that the utility model provides a kind of voltage stabilizing of high-pressure common-rail fuel system
Rail pipe additionally provides a kind of air-cooled diesel engine using the high-pressure common-rail fuel system equipped with this voltage stabilizing common rail pipe, is conducive to
The abundant burning of fuel oil reduces carbon distribution, improves the power performance of engine, reduces gas pollutant discharge capacity and noise.
The utility model realizes that above-mentioned purpose technical solution is：
A kind of injector nozzle matching parts suitable for high-pressure common-rail fuel system, including valve body and can axially be moved in the valve body
The outer surface of dynamic needle, the needle and the valve body clearance fit, the main part of the valve body is in cylindrical, described
The outer surface on the head of valve body is in nipple shape, includes the first arcuate surface at the top of nipple shape and the positioned at nipple shape rear portion
Two arcuate surfaces are concave surface outside the middle part in the middle part of nipple shape between first arcuate surface and the second arcuate surface, described first
It is seamlessly transitted successively between the cylindrical outer surface of concave surface, the second arcuate surface and valve body part outside arcuate surface, middle part, institute
The central valve opening being equipped in the main part of valve body along valve axis is stated, is equipped in the head of the valve body and the central valve opening
The cavity wall surface of the head cavity being communicated as one, the head cavity is divided into three sections, including convex surface, middle part inner cone in the top being sequentially connected
The taper of face and rear portion inner conical surface, the rear portion inner conical surface is more than（It is slightly larger than）The taper of the middle part inner conical surface, the rear portion
The back-end radius of inner conical surface（Any point is the distance between to valve body centre straight ahead on back edge）Less than the central valve opening
Radius, the connecting end surface for passing through shoulder between the rear portion inner conical surface and the central valve opening connects, the main body of the needle
Part is cylinder, and head is in the shape to lordosis, and the outer surface on the head of the needle is divided into two sections, including be sequentially connected
Needle upper convex surface and the valve pin head portion conical surface are constituted, and the radius of the main part of the needle is less than the half of the central valve opening
Diameter, the taper of the valve pin head portion conical surface is equal with the taper of rear portion inner conical surface on the valve body, and its rear end diameter is not more than
The rear end diameter of rear portion inner conical surface on the valve body, the rear end that point diameter is less than the middle part inner conical surface on the valve body are straight
The head of diameter, the valve body is equipped with nozzle opening, and it is in the straight hole of an acute angle that the nozzle opening, which is with valve axis, and interior end opening is located at
In the top on convex surface, outer end opening is located at the front of concave surface outside the middle part, and the quantity of the nozzle opening is 6, axial
（Along valve axis direction）Upper position is identical, is uniformly distributed in circumferential direction, and the angle between oil spout axially bored line and valve axis is
73.5 °, the general outline of the surfaces externally and internally of the valve body and needle is in surface of revolution shape.
A kind of voltage stabilizing common rail pipe of high-pressure common-rail fuel system, including common rail tube body, the common rail tube body are equipped with
For detecting the pressure sensor of common rail tube body internal pressure power, for pressure limit when safety relief can automatically reset let out
Pressure valve, equipped with the oil inlet for connecting high-pressure oil feed pipeline and several oil outlets for connecting fuel injector, the common rail pipe
Pressurized cylinder is installed, the pressurized cylinder includes the voltage stabilizing cylinder body of both ends open on ontology（Cylindrical body）, the voltage stabilizing cylinder body passes through
The tube wall of the common rail tube body is fixedly mounted on the common rail tube body, and the outer end opening of the voltage stabilizing cylinder body is located at altogether
Outside rail tube body, interior end opening is located in common rail tube body, is equipped in the pressurized cylinder body and its inner wall sealing and is slidably connected
Voltage stabilizing piston, the outside of the voltage stabilizing piston is equipped with spiral type thrust spring, and the inner end of the thrust spring acts on described
The outside of voltage stabilizing piston, the outer end of the thrust spring act on the spring support being fixedly mounted on the voltage stabilizing cylinder body
On.
A kind of air-cooled diesel engine using high-pressure common-rail fuel system, including common rail pipe and several fuel injectors, the oil spout
The inflow pipeline of device is separately connected the correspondence oil outlet of the common rail pipe, and the common rail pipe is using disclosed by the utility model arbitrary
The injector nozzle matching parts of a kind of voltage stabilizing common rail pipe of high-pressure common-rail fuel system, the fuel injector use disclosed by the utility model
It anticipates a kind of injector nozzle matching parts suitable for high-pressure common-rail fuel system.
The beneficial effects of the utility model are：The reasonable cooperation constructed by injector nozzle matching parts each section, is adapted in north
The oil spout of the existing industrial air-cooled diesel engine such as FL913F Series Air-cooled Diesels requires, the atomization in cylinder combustion room and mixing effect
The power effect of fruit, engine is good, and the vibration and noise caused by fuel oil is low, at the same also drastically reduce in cylinder inner wall and
Body top and nozzle nearby wait the carbon deposition phenomenon at positions, it is possible thereby in the case where not being transformed to engine, it will be high
It presses common rail fuel combustion system to be applied to the air-cooled diesel engines such as FL913F series in existing north, is giving full play to high-pressure common rail combustion
While oil system advantage, the cost of Technique Popularizing application, valve body especially valve head and nozzle opening are significantly reduced
The optimization of construction so that the fuel particles sprayed under high pressure will not be directly adhered on the engine air inside wall of cylinder, and in combustion chamber
Interior to form good atomization and mixed effect, the nipple-like of valve head designs and the concave surface outside middle part is arranged in nozzle opening
Front so that near nozzle opening and the regions such as top end of the valve body are coincide with valve body surface because of the eddy flow that injection negative pressure is formed, base
Dead angle is not present in sheet, these products being easily formed in the region of carbon distribution are efficiently avoided by circulating current and eddy flow erosion
Carbon phenomenon, and then efficiently avoid the negative effect because of fuel injector carbon distribution to burning, and by the contrast experiment of applicant,
Under 2500 r/min of rotating speed, 340 N.m of torque, the oil consumption of the utility model is 249.1g/kw.h, and row's temperature is 618 °C, in tail gas
Nitrogen oxides Nox contents are 739 ppm, and single index and overall target are significantly better than that the similar prior art, and significantly drop
Vibration and noise caused by low fuel oil, drastically reduce carbon distribution and thus caused by maintenance cost；Due in common rail pipe
Interior upper provided with pressurized cylinder, voltage stabilizing cylinder body is formed common with common rail tube cavity by the inner cavity of its inner end open communication common rail pipe
The space of fuel oil is accommodated, the piston of pressurized cylinder is in equilbrium position under the collective effect of common rail overpressure and thrust spring,
When common rail overpressure increases, voltage stabilizing the cylinder piston is displaced outwardly, and is expanded the space for accommodating fuel oil, is reduced common rail pipe internal pressure
The increase amplitude of power, when common rail overpressure reduces, voltage stabilizing the cylinder piston moves inward, and reduces the space for accommodating fuel oil, drop
The low reduction amplitude of common rail overpressure, thus plays pressure oscillation in common rail pipe and significantly slows down effect, significantly
The pressure oscillation in common rail pipe caused by the fluctuation of fuel feeding and distributive value is reduced, stable injection pressure is maintained.
Description of the drawings
Fig. 1 is the organigram of the utility model injector nozzle matching parts；
Fig. 2 is A partial cutaway schematics shown in FIG. 1；
Fig. 3 is that the utility model is related to high-pressure common-rail fuel system configuration diagrams；
Fig. 4 be the utility model is related to pressurized cylinder be related to pressurizer pressure adjusting organigram；
Fig. 5 be the utility model is related to a kind of diesel engine total structure schematic diagram.
Specific implementation mode
Referring to Fig. 1 and Fig. 2, described the utility model is related to a kind of injector nozzle matching parts suitable for high-pressure common-rail fuel system
Injector nozzle matching parts include valve body 510 and the needle 520 that can be moved axially in the valve body, by the axial movement of needle,
So that the sealing pair of couple is turned on and off, and then so that atomizer is opened oil spout or close not oil spout, the needle and the valve body
Clearance fit, the gap of the tubular form the fuel gallery 530 between valve body and needle, fuel oil are made to get enter into atomizer.
The outer surface of the main part of the valve body usually can be in cylindrical, and the outer surface on the head of the valve body is logical
It often can be in nipple shape, include the first arcuate surface 513 at the top of nipple shape and the second arcuate surface positioned at nipple shape rear portion
515, it is concave surface outside the middle part in the middle part of nipple shape, first evagination between first arcuate surface and the second arcuate surface
It is seamlessly transitted successively between the cylindrical outer surface of concave surface, the second arcuate surface and valve body part outside face, middle part, so that combustion
It is smooth to burn indoor air-flow flowing, avoids flow direction and/or flow velocity change dramatically caused by angular structures, forms dead angle and negative pressure
Region, and in negative pressure region and it is formed about densely covered small eddy flow, and then avoid the cavitation erosion thus caused and carbon distribution.
The central valve opening along valve axis can be usually equipped in the main part of the valve body, in the head of the valve body
For the head cavity 533 being communicated as one with the central valve opening, the needle is located to be formed by connecting one by central valve opening and head cavity
Change in body cavity, the cavity wall surface of the head cavity is divided into three sections, including convex surface, middle part inner conical surface in the top being sequentially connected
516 and rear portion inner conical surface, the taper of the rear portion inner conical surface be more than（It is slightly larger than）The taper of the middle part inner conical surface, thus in
The intersection of portion's inner conical surface and rear portion inner conical surface forms an annular ridge（Convex）, which can be used as needle and valve body
Sealing structure between inner wall contacts in the closed state, being sealed against each other with the conical outer surface of valve pin head portion, closes fuel oil
Channel, under oil spout state, valve pin head portion is detached from the annular ridge so that fuel oil is flowed, and is finally sprayed from nozzle opening.
The back-end radius of the rear portion inner conical surface（Any point is the distance between to valve body centre straight ahead on back edge）
The radius of the central valve opening is should be less than, is connected by the connecting end surface of shoulder between the rear portion inner conical surface and the central valve opening
It connects, so that there is larger spacing 531 between central valve opening and needle, to reduce resistance.
The main part of the needle is cylinder, head be in lordosis shape, with in needle central valve opening and
Head cavity shape is adapted.The outer surface on the head of the needle is divided into two sections, including the needle upper convex surface and valve being sequentially connected
The needle section conical surface 521 is constituted, and the radius of the main part of the needle is less than the radius of the central valve opening, and it is logical to form fuel oil
Road, the taper of the valve pin head portion conical surface is equal with the taper of rear portion inner conical surface on the valve body, is formed and is adapted with valve body
In valve pin sealing surface, the rear end diameter of the valve pin head portion conical surface is straight no more than the rear end of the rear portion inner conical surface on the valve body
Diameter, point diameter is less than the rear end diameter of the middle part inner conical surface on the valve body, with the valve seal between realization and valve body.
The head of the valve body is equipped with nozzle opening 540, and it is in the straight hole of an acute angle, inner end that the nozzle opening, which is with valve axis,
Opening is located in the top on convex surface, and outer end opening is located at the front of concave surface outside the middle part, and the quantity of the nozzle opening is 6
It is a, it is axial（Along valve axis direction）Upper position is identical, is uniformly distributed in circumferential direction, the folder between oil spout axially bored line and valve axis
Angle a is 73.5 °, and the general outline of the surfaces externally and internally of the valve body and needle is in surface of revolution shape, this nozzle opening and periphery
Construction is clearly helpful for reducing carbon distribution and noise.
The external rear face 511 of the valve body can be stepped, to facilitate installation.
Referring to Fig. 3 and Fig. 4, the utility model further relates to a kind of voltage stabilizing common rail pipe of high-pressure common-rail fuel system, including altogether
Rail tube body 40, the common rail tube body are equipped with for detecting the pressure sensor 43 of common rail tube body internal pressure power, for pressing
The relief valve 42 that can be automatically reset of safety relief when power transfinites, equipped with the oil inlet and use for connecting high-pressure oil feed pipeline
In being equipped with pressurized cylinder on several oil outlets of connection fuel injector 50, the common rail tube body, the pressurized cylinder includes that both ends are spacious
The voltage stabilizing cylinder body opened（Cylindrical body）61, the voltage stabilizing cylinder body passes through the tube wall of the common rail tube body, is fixedly mounted on described total
On rail tube body, the outer end opening of the voltage stabilizing cylinder body is located at outside common rail tube body, and interior end opening is located in common rail tube body, institute
State be equipped in pressurized cylinder body with its inner wall sealing and the voltage stabilizing piston 66 that is slidably connected, the outside of the voltage stabilizing piston is equipped with spiral
Formula thrust spring 64, the inner end of the thrust spring act on the outside of the voltage stabilizing piston, and the outer end of the thrust spring is made
Spring support 63 for being fixedly mounted on the voltage stabilizing cylinder body.
Preferably, the inside and outside both sides of the voltage stabilizing piston are equipped with guide plate 663,664, to guide and limit voltage stabilizing
What piston was stablized in pressurized cylinder body moves axially.
The connection type that pressure adjustable is preferably used between guide plate described in the voltage stabilizing piston and medial and lateral, for example, interior
It is connected by adjusting screw 661 between side guide plate and outside guide plate, the adjusting screw passes through inside guide plate and voltage stabilizing
Piston, head are located at the inside of inside guide plate, and the head of the adjusting screw is lined with washer 662, and tail portion is screwed in outside
On guide plate, outer end generally extends to the outside of outside guide plate, can screw degree by the adjusting adjusting screw,
The radial expansion volume to the voltage stabilizing piston is increased or reduced, and adjusts rubbing between voltage stabilizing piston and voltage stabilizing inboard wall of cylinder block according to this
Resistance is wiped, it is possible thereby to adjust frictional resistance between the voltage stabilizing piston and the common rail pipe, and then is adjusted steady in common rail pipe
Pressure pressure, this regulative mode is simple in structure, easy to operate, and due to specific fit system and material between piston and casing wall
Feature, it is only necessary to simply screw or unscrew adjusting screw, so that it may be adjusted with the pressure realized in actually required range.
Gasket 665 can be equipped between the lateral surface and thrust spring of the outer guide plate.
It is preferably provided on the voltage stabilizing cylinder body for whether acquiring piston in the medial and lateral limit for allowing moving range
The sensing that can arbitrarily detect piston specific location may be used in piston position sensor 62, the piston position sensor
Device, for example, infrared distance sensor, displacement sensor etc., can also use the piston that can be moved on extreme position to touch
Travel switch or electromagnetic induction switch of hair etc., it is possible thereby to by the output access control high pressure pump work of piston position sensor
Control device on, when detecting that piston moves to lateral limit position, control device is sent out according to piston position sensor
Corresponding signal controls high pressure pump work, fuel oil is supplemented in common rail pipe, when detecting that piston moves to inside extreme position, control
The corresponding signal that device processed is sent out according to piston position sensor, control high-pressure pump are stopped, and do not continue to increase common rail pipe
Interior amount of fuel.
Referring to Fig. 4 and Fig. 5, the air-cooled diesel engine disclosed by the utility model using high-pressure common-rail fuel system, including altogether
The inflow pipeline of rail pipe 40 and several fuel injectors 50, each fuel injector is separately connected the correspondence oil outlet of the common rail pipe, institute
The voltage stabilizing common rail pipe that common rail pipe uses any one high-pressure common-rail fuel system disclosed by the utility model is stated, the fuel injector
Injector nozzle matching parts using it is disclosed by the utility model any one be suitable for high-pressure common-rail fuel system injector nozzle matching parts.
Oil outlet on the common rail pipe can connect the fuel injector by high pressure oil pipe.
The outlet of the high-pressure oil feed pipeline connection high-pressure common-rail oil pump 31 of the common rail pipe, the high-pressure common-rail oil pump and institute
It states the high-pressure oil feed pipeline between common rail pipe and is equipped with the check valve 32 for allowing to flow to common rail pipe.
The outlet of the import connection fuel filter 22 of the high-pressure common-rail oil pump, the import connection of the fuel filter
The import of oil transfer pump 21, the oil transfer pump connects oil vessel 10 by pipeline, for example, closed oil storage tank, fuel reserve tank or storage
Oil tank etc..
The high-pressure common-rail oil pump preferred plunger pump.
The common rail pipe and oil vessel, oil transfer pump, filter, high-pressure common-rail oil pump and common group of relevant connection pipeline
At the high-pressure common rail oil supply system in high-pressure common-rail fuel system, for providing stable high pressure fuel to multiple fuel injectors.And
Common rail pipe can then collectively constitute the high-pressure common rail oil injection system in high-pressure common-rail fuel system with fuel injector and relevant connection pipeline
System.
Here is a specific embodiment of the utility model air-cooled diesel engine（Referring to Fig. 5）：It is this to apply high-pressure common rail
The air-cooled diesel engine of fuel system, including body, toggle, valve actuating mechanism, fuel system, lubricating system, cooling system
System and electronic control unit（ECU）, the fuel system includes diesel fuel tanks, and coarse filter is equipped in the diesel fuel tanks, the diesel fuel tanks
Flowline 101 connects oil transfer pump 21, and fuel oil can be pressurized to 10 bar by the oil transfer pump, and the output channel of the oil transfer pump connects
The output channel of BOR Bunker of Redelivery filter 22, the fuel filter accesses high-pressure common-rail oil pump 31, the high-pressure common-rail oil pump
Effect is the low-voltage fuel pressurization that will be come out from fuel filter, forms required high pressure fuel and is transported to common rail pipe, in this reality
It applies under example, the highest charge oil pressure of the high-pressure common-rail oil pump can reach 1800 bar, also be set on the high-pressure common-rail oil pump
There are the fuel metering valve 106 of the charge oil pressure for adjusting high-pressure common-rail oil pump, the fuel metering valve and the electronic control unit
It is connected by communication, high-pressure common-rail oil pump can make air-cooled diesel engine still keep higher charge oil pressure at the low rotational speed.The height
The oil outlet of common rail oil pump is pressed to connect common rail pipe 40 by the high-pressure oil feed pipe 107 of common rail pipe, the common rail pipe is mounted on air-cooled
Inside the wind scooper of diesel engine, it is cooled down by fan, is prevented due to diesel fuel temperature raising and to diesel engine performance
It influences, high pressure fuel can be stablized and near value, reduce the fluctuation of pressure at one by the common rail pipe, ensure the injection rule of fuel oil
It restrains and is consistent with the jet law of design.Fuel oil after pressure stability connects oil spout by the inflow pipeline 109 of fuel injector
Device 50, the fuel injector are equipped with mating solenoid valve, and the solenoid valve is connected by communication with the electronic control unit, passes through solenoid valve control
Unlatching and the closure for making the spray orifice of the fuel injector, finally spray into combustion chamber by high pressure fuel.
The body is equipped with camshaft-signal sensor 104 and crankshaft sensor 103, is set in the air inlet pipe of the valve actuating mechanism
There are pressure-temperature sensor 102, the electronic control unit to be communicated with camshaft-signal sensor, crankshaft sensor and pressure-temperature sensor
It is connected, in the air-cooled diesel engine course of work, compression top center is determined by camshaft-signal sensor and crankshaft sensor, and according to
This determines the oil injection time of fuel injector, detects the charge flow rate and temperature of engine by pressure-temperature sensor, to
For correcting the distributive value of fuel injector.
The effect of fuel filter is the impurity filtered out from the diesel oil that diesel fuel tanks come out, to prevent some small particles
Injection pump is blocked, so as to cause the failure of diesel engine.The fuel filter is special using the diesel engine of five standard of state four or state
Fuel filter, filter efficiency higher, effective filtering accuracy reach 5~10 μm, improve the reliability of fuel system, the combustion
The filter core of oil rectifier is filter paper, felt or high molecular material.
The high-pressure oil pipe will have enough intensity due to bearing higher pressure, since the high pressure of the utility model is total
Rail oil pump highest charge oil pressure can reach 1800 bar, so the also higher of the requirement to high-pressure oil pipe, the high-pressure oil pipe
Pipe aperture is 1.5mm（Normal diesel engine high-pressure oil pipe internal diameter is 2.0mm）, material is DSG1600 BKS, as a result of
New-type tubing material and the internal diameter for reducing high-pressure oil pipe enable high-pressure oil pipe to bear bigger pressure, effective guarantee system
Operation.
The effect of fuel injector is that the high pressure fuel that high-pressure oil pipe passes over is ejected into combustion chamber with the pattern of mist of oil to work as
In, the degree of atomization is better, and the mixing with air is better, and the economy and dynamic property of diesel engine are also better.This practicality
Novel fuel injector is magneto-electric fuel injector, controls the injection time started of fuel oil by the actuation and disconnection of solenoid valve and holds
It is the continuous time, high for the control accuracy of fuel injection characteristic since the response time of solenoid valve is short, therefore the performance of engine is able to
It is promoted.
The electronic control unit is the control centre of the utility model, the letter that the electronic control unit is acquired by analyte sensors
Number control opening and closing and the fuel metering unit of fuel injector magnetic system, it is ensured that engine there can be preferable warp under each operating mode
Ji property and emission performance.Specifically, the electronic control unit judges a cylinder by the camshaft-signal sensor and crankshaft sensor
Top dead centre, and then the start-up time of the solenoid valve of fuel injector is controlled, the pressure-temperature sensor can be the electronic control unit
The charge flow rate and temperature that engine is provided, to be used for correcting the distributive value of fuel injector.The electronic control unit also with air-cooled bavin
The sensors such as engine oil pressure mating on other parts, temperature are connected in oil machine, monitor the entire fortune of air-cooled diesel engine in real time
Row situation, once there is exception, the electronic control unit can make a response in time：Reduce fuel delivery or directly stops oil spout.
The fuel system of the utility model is applied widely, and 2,3,4,6 cylinder air-cooled diesel engines can be coordinated to use, and need to only change
Become the quantity of oil pipe.
The utility model be for the first time on industrial air-cooled diesel engine use high-pressure common-rail fuel system, by fuel injector,
It is more accurate that the electronic control unit of optimizing integration of fuel filter and high-pressure oil pipe so that the amount of fuel of diesel engine controls, and improves air-cooled
The fuel economy of diesel engine, significantly reduces discharge value, meets the emission request of diesel engine used not on road phase III, and
It can be upgraded to four discharge standard of state by directly increasing post-processing technology.
It is disclosed by the utility model it is each preferably with optional technological means, unless otherwise indicated and a preferred or optional skill
Art means are that further limiting for another technological means is outer, can form several different technical solutions in any combination.
Claims (10)
1. a kind of voltage stabilizing common rail pipe of high-pressure common-rail fuel system, including common rail tube body, it is characterised in that the common rail pipe sheet
Body be equipped with for detecting the pressure sensor of common rail tube body internal pressure power, for pressure limit when safety relief can be automatic
The relief valve of reset, equipped with the oil inlet for connecting high-pressure oil feed pipeline and several oil outlets for connecting fuel injector, institute
It states and pressurized cylinder is installed on common rail tube body, the pressurized cylinder includes the voltage stabilizing cylinder body of both ends open, and the voltage stabilizing cylinder body passes through
The tube wall of the common rail tube body is fixedly mounted on the common rail tube body, and the outer end opening of the voltage stabilizing cylinder body is located at altogether
Outside rail tube body, interior end opening is located in common rail tube body, is equipped in the pressurized cylinder body and its inner wall sealing and is slidably connected
Voltage stabilizing piston, the outside of the voltage stabilizing piston is equipped with spiral type thrust spring, and the inner end of the thrust spring acts on described
The outside of voltage stabilizing piston, the outer end of the thrust spring act on the spring support being fixedly mounted on the voltage stabilizing cylinder body
On.
2. voltage stabilizing common rail pipe as described in claim 1, it is characterised in that the inside and outside both sides of the voltage stabilizing piston are equipped with guiding
Plate.
3. voltage stabilizing common rail pipe as claimed in claim 2, it is characterised in that guide plate described in the voltage stabilizing piston and medial and lateral it
Between use the connection type of pressure adjustable, connected by adjusting screw between the inside guide plate and the outside guide plate,
The adjusting screw passes through inside guide plate and voltage stabilizing piston, head to be located at the inside of inside guide plate, and tail portion is screwed in outer
On the guide plate of side.
4. voltage stabilizing common rail pipe as claimed in claim 1,2 or 3, it is characterised in that the voltage stabilizing cylinder body is equipped with for acquiring work
Whether plug is in the piston position sensor for the medial and lateral limit for allowing moving range, the output of the piston position sensor
On the control device of access control high pressure pump work.
5. a kind of industry air-cooled diesel engine, using high-pressure common-rail fuel system, including common rail pipe and it is separately connected the common rail pipe
Several fuel injectors of corresponding oil outlet are gone up, the oil outlet on the common rail pipe passes through high pressure oil pipe and connects the oil spout
The high-pressure oil feed pipeline of device, the common rail pipe connects high-pressure common-rail oil pump, between the high-pressure common-rail oil pump and the common rail pipe
High-pressure oil feed pipeline be equipped with the check valve for allowing to flow to common rail pipe, it is characterised in that the common rail pipe uses such as claim
The injector nozzle matching parts of the voltage stabilizing common rail pipe of high-pressure common-rail fuel system described in any one of 1-4, the fuel injector include valve
Body and the needle that can be moved axially in the valve body, the needle and the valve body clearance fit, the main body of the valve body
It is equipped with the central valve opening along valve axis in part, is equipped in the head of the valve body and is communicated as one with the center valve opening
The cavity wall surface of head cavity, the head cavity is divided into three sections, including convex surface, middle part inner conical surface and rear portion inner cone in the top being sequentially connected
Face, the taper of the rear portion inner conical surface are more than the taper of the middle part inner conical surface, and the main part of the needle is cylinder, head
Portion is in the shape to lordosis, and the outer surface on the head of the needle is divided into two sections, including the needle upper convex surface being sequentially connected and
The valve pin head portion conical surface is constituted, and the radius of the main part of the needle is less than the radius of the central valve opening, the valve pin head portion
The taper of the conical surface is equal with the taper of rear portion inner conical surface on the valve body, and its rear end diameter is no more than the rear portion on the valve body
The rear end diameter of inner conical surface, point diameter are less than the rear end diameter of the middle part inner conical surface on the valve body, the head of the valve body
Equipped with nozzle opening, it is in the straight hole of an acute angle that the nozzle opening, which is with valve axis, and interior end opening is located in the top on convex surface,
Outer end opening is located at the front of concave surface outside middle part.
6. industry air-cooled diesel engine as claimed in claim 5, it is characterised in that the import connection combustion of the high-pressure common-rail oil pump
The import of the outlet of oil rectifier, the fuel filter connects oil transfer pump, and the import of the oil transfer pump is connected by pipeline stores up
Oil vessel.
7. such as industrial air-cooled diesel engine described in claim 5 or 6, it is characterised in that the oil spout hole count on the head of the valve body
Amount is 6, and the position in axial direction is identical, is uniformly distributed in circumferential direction.
8. industry air-cooled diesel engine as claimed in claim 7, it is characterised in that the axis of the nozzle opening and the valve body
Angle between axis is 73.5 °.
9. industry air-cooled diesel engine as claimed in claim 8, it is characterised in that the outer surface of the main part of the valve body is in
Cylindrical, the outer surface on the head of the valve body are in nipple shape, include the first arcuate surface at the top of nipple shape and are located at
Second arcuate surface at nipple shape rear portion is outside the middle part in the middle part of nipple shape between first arcuate surface and the second arcuate surface
Concave surface, outside first arcuate surface, middle part between the cylindrical outer surface of concave surface, the second arcuate surface and valve body part according to
It is secondary to seamlessly transit.
10. industry air-cooled diesel engine as claimed in claim 9, it is characterised in that the back-end radius of the rear portion inner conical surface is less than
The radius of the center valve opening is connected between the rear portion inner conical surface and the central valve opening by the connecting end surface of shoulder, institute
The general outline for stating the surfaces externally and internally of valve body and needle is in surface of revolution shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721817562.0U CN207989206U (en) | 2017-04-06 | 2017-04-06 | The voltage stabilizing common rail pipe of high-pressure common-rail fuel system and industrial air-cooled diesel engine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720352699.7U CN206988007U (en) | 2017-04-06 | 2017-04-06 | Using the industrial air-cooled diesel engine of high-pressure common-rail fuel system |
| CN201721817562.0U CN207989206U (en) | 2017-04-06 | 2017-04-06 | The voltage stabilizing common rail pipe of high-pressure common-rail fuel system and industrial air-cooled diesel engine |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720352699.7U Division CN206988007U (en) | 2017-04-06 | 2017-04-06 | Using the industrial air-cooled diesel engine of high-pressure common-rail fuel system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207989206U true CN207989206U (en) | 2018-10-19 |
Family
ID=61422816
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721816729.1U Active CN208073658U (en) | 2017-04-06 | 2017-04-06 | Injector nozzle matching parts suitable for high-pressure common-rail fuel system and industrial air-cooled diesel engine |
| CN201720352699.7U Active CN206988007U (en) | 2017-04-06 | 2017-04-06 | Using the industrial air-cooled diesel engine of high-pressure common-rail fuel system |
| CN201721817562.0U Active CN207989206U (en) | 2017-04-06 | 2017-04-06 | The voltage stabilizing common rail pipe of high-pressure common-rail fuel system and industrial air-cooled diesel engine |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721816729.1U Active CN208073658U (en) | 2017-04-06 | 2017-04-06 | Injector nozzle matching parts suitable for high-pressure common-rail fuel system and industrial air-cooled diesel engine |
| CN201720352699.7U Active CN206988007U (en) | 2017-04-06 | 2017-04-06 | Using the industrial air-cooled diesel engine of high-pressure common-rail fuel system |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN208073658U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727652A (en) * | 2020-12-07 | 2021-04-30 | 无锡威孚高科技集团股份有限公司 | Double-layer common rail pipe |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112201014B (en) * | 2020-09-27 | 2022-02-18 | 同济大学 | Early warning method and early warning system for excessive carbon deposition of biodiesel engine |
| CN112412676A (en) * | 2020-10-21 | 2021-02-26 | 东风汽车集团有限公司 | Pressure-adjustable fuel oil boosting device |
-
2017
- 2017-04-06 CN CN201721816729.1U patent/CN208073658U/en active Active
- 2017-04-06 CN CN201720352699.7U patent/CN206988007U/en active Active
- 2017-04-06 CN CN201721817562.0U patent/CN207989206U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727652A (en) * | 2020-12-07 | 2021-04-30 | 无锡威孚高科技集团股份有限公司 | Double-layer common rail pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN206988007U (en) | 2018-02-09 |
| CN208073658U (en) | 2018-11-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207989206U (en) | The voltage stabilizing common rail pipe of high-pressure common-rail fuel system and industrial air-cooled diesel engine | |
| CN102365450A (en) | Fuel injection valve | |
| CN201794698U (en) | Internal combustion engine | |
| CN103644057B (en) | Fuel injector capable of injecting fuel to engine quantitatively at fixed time in controllable manner | |
| CN206092260U (en) | Heavy machinery sprayer device with circulative cooling | |
| CN107201957A (en) | Methanol diesel-oil mixes combustion system and the commercial car | |
| CN208330570U (en) | The air inlet air compensating system of diesel engine and diesel engine with the air inlet air compensating system | |
| CN108468608A (en) | A kind of engine fuel oil system | |
| CN105986866B (en) | A kind of digital fluid metering device and control method | |
| CN207454131U (en) | Suitable for the single cylinder diesel of EGR exhaust recycling | |
| CN209539489U (en) | A kind of oil exploitation engine fuel injector | |
| CN208950690U (en) | A kind of diesel engine cooling system | |
| CN207004700U (en) | A kind of new micro- spray common-rail injector | |
| CN205823505U (en) | For EFI fuel pressure Transfer tectonics | |
| CN207018095U (en) | Fuel delivery system for engine | |
| CN205445854U (en) | A sprayer subassembly for electricity spouts digital generating set | |
| CN108561250B (en) | A kind of circulating internal combustion engine fuel injection system | |
| CN205805803U (en) | Transformation electric injection fuel system and electromotor thereof | |
| CN103075249A (en) | Free-piston engine | |
| CN212508465U (en) | Oil regulator for two-stroke IC engine | |
| CN109736979A (en) | Engine exhaust recirculating system and automobile | |
| CN105715436B (en) | A kind of quantitative mixing arrangement of vehicular engine liquid fuel | |
| JPS633427Y2 (en) | ||
| CN208845293U (en) | A kind of double atomizer oil supply systems of put-put | |
| CN105863907B (en) | Become fuel pressure electric injection system and its engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 301700 Building 1, No. 36, Jingbin Avenue, Jingbin Industrial Park, Wuqing District, Tianjin Patentee after: Beinei diesel engine (Tianjin) Co.,Ltd. Address before: No. 1, liuhezhuang, dahongmen, Fengtai District, Beijing 100076 Patentee before: BEIJING BEINEI DIESEL ENGINE Co.,Ltd. |