CN104696126A - Fuel oil distributor and engine using fuel oil distributor - Google Patents
Fuel oil distributor and engine using fuel oil distributor Download PDFInfo
- Publication number
- CN104696126A CN104696126A CN201310666254.2A CN201310666254A CN104696126A CN 104696126 A CN104696126 A CN 104696126A CN 201310666254 A CN201310666254 A CN 201310666254A CN 104696126 A CN104696126 A CN 104696126A
- Authority
- CN
- China
- Prior art keywords
- valve
- classification
- nozzle
- fuel
- control signal
- 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.)
- Granted
Links
Abstract
The invention provides a fuel oil distributor. The fuel oil distributor comprises a distribution valve and an electro-hydraulic servo valve, wherein the distribution valve is used for receiving and metering fuel oil to distribute and provide the fuel oil to a main combustion grade spray nozzle and a pre-combustion grade spray nozzle of a combustion chamber, and the electro-hydraulic servo valve is used for controlling the distribution valve to distribute and provide the fuel oil to the main combustion grade spray nozzle and the pre-combustion grade spray nozzle according to a first control signal, and the first control signal is at least partially based on a working state of an engine and a first feedback signal from the distribution valve for generation.
Description
Technical field
The present invention relates to motor, particularly relate to the fuel dispenser in motor.
Background technique
For meeting day by day harsh aeroengine emission standard, low-fuel-comsuption rate, low stain, low emission are the Main Trends of The Developments of following Civil Aviation Engine combustion technology.Such as, according to the CAEP6 standard adopted at present, discharged nitrous oxides requires lower by 60% than old-fashioned motor average discharge level.Therefore advanced combustion with reduced pollutants technology is the focus development direction of modern civil engine.
The target of combustion with reduced pollutants technology reduces NO
x(nitrogen oxide), CO(carbon monoxide), UHC(unburned hydrocarbons) and flue dust.According to NO
xwith CO produce mechanism and test result known: when the zone of combustion equivalent proportion of firing chamber is in 0.6 ~ 0.8 scope, the NO produced
xlittle with CO, the emission equivalent of UHC and CO is also similar.Zone of combustion equivalent proportion refers to that actual oil-gas ratio is divided by the appropriate oil-gas ratio of chemistry, and the oil-gas ratio of zone of combustion refers to that fuel flow is divided by the air quantity participating in burning.Therefore, the key problem of combustion with reduced pollutants technology is the temperature of reduction zone of combustion, makes combustion zone temperature field even simultaneously, and namely the equivalent proportion of whole and part controls.Specifically, take into account NOx and CO, the discharge amount of UHC is all in lower scope, should consider two factors: one is the average equivalent ratio of zone of combustion, two is uniformities of zone of combustion equivalent proportion.The uniformity of zone of combustion equivalent proportion depends primarily on again the uniformity of fuel-oil atmozation and oil gas blending, namely depends on these two aspects: the uniformity of fuel particles diameter distribution and the uniformity of fuel oil oil mist concentration distribution.
Current combustion room design method and fuel distribution method have larger deficiency in the problems referred to above.Such as, when motor high workload state, the equivalent proportion of combustion zone temperature is about 1, far exceed equivalence ratio range requirement needed for above-mentioned combustion with reduced pollutants, and when low working state, zone of combustion equivalent proportion is very low again, interval far below equivalent proportion needed for above-mentioned combustion with reduced pollutants.This is because the engine combustion technology of routine adopts single-stage fuel feeding mostly, even if or have employed the classification fuel feeding of pre-combustion grade and main combustion stage, but cannot carry out active continuous print to the fuel delivery of pre-combustion grade and main combustion stage double-stage nozzle regulates.The problem caused like this can not carry out fuel feeding according to the actual demand amount of the double-stage nozzle of firing chamber accurately, cause equivalent proportion in combustion zone uneven, reduce the indexs such as the fuel efficiency of motor, constrain low-fuel-comsuption rate and the low pollution emission performance of civil engine.
Therefore, related domain needs a kind of high efficiency fuel distribution technique that can carry out initiatively continuous print fuel control to pre-combustion grade and main combustion stage badly.
Summary of the invention
Below provide the brief overview of one or more aspect to provide the basic comprehension to these aspects.Detailed the combining of this not all aspect contemplated of general introduction is look at, and both not intended to be pointed out out the scope of key or decisive any or all aspect of elements nor delineate of all aspects.Its unique object is the sequence that some concepts that will provide one or more aspect in simplified form think the more detailed description provided after a while.
According to an aspect of the present invention, provide a kind of fuel dispenser, comprising: distribute valve, this distribution valve receives metering fuel oil and is provided to the main combustion stage nozzle of firing chamber and the fuel oil of pre-combustion grade nozzle to distribute; And electrohydraulic control, this electrohydraulic control controls this distribution valve to distribute the fuel oil being provided to this main combustion stage nozzle and this pre-combustion grade nozzle according to the first control signal, and this first control signal is at least in part based on the working state of motor with generate from the first feedback signal of this distribution valve.
In one example, this distribution valve comprises: spool, this spool is movably to regulate and distribute the amount of fuel to this main combustion stage nozzle and this pre-combustion grade nozzle in this distribution valve, wherein, this electrohydraulic control provides modulation oil to regulate the position of this spool according to this first control signal to this distribution valve; And linear displacement transducer, this linear displacement transducer is used for the position of this spool of perception to generate this first feedback signal.
In one example, this linear displacement transducer comprises linear variable difference transformer.
In one example, this main combustion stage nozzle comprises main combustion stage first order jet nozzle along the hoop classification of this firing chamber and main combustion stage secondary nozzle, wherein this fuel dispenser also comprises: the first classification valve, and this first classification valve is coupled to this distribution valve with optionally to this main combustion stage first order jet nozzle and main combustion stage secondary nozzle fuel feeding; And first solenoid valve, whether this first solenoid valve controls this first classification valve switch according to the second control signal is to select to this main combustion stage secondary nozzle fuel feeding, and this second control signal is at least in part based on the working state of motor with generate from the second feedback signal of this first classification valve.
In one example, this the first classification valve comprises: spool, this spool is moveable to control the switch of this first classification valve in this first classification valve, this the first classification valve is not when closing to this main combustion stage secondary nozzle fuel feeding, and wherein this first solenoid valve provides modulation oil to regulate the position of this spool according to this second control signal to this first classification valve; And proximity switch, this proximity switch is used for generating this second feedback signal according to the switch of this first classification valve.
In one example, this pre-combustion grade nozzle comprises pre-combustion grade first order jet nozzle along the hoop classification of this firing chamber and pre-combustion grade secondary nozzle, wherein this fuel dispenser also comprises: the second classification valve, and this second classification valve is coupled to this distribution valve with optionally to this pre-combustion grade first order jet nozzle and pre-combustion grade secondary nozzle fuel feeding; And second solenoid valve, whether this second solenoid valve controls this second classification valve switch according to the 3rd control signal is to select to this pre-combustion grade secondary nozzle fuel feeding, and the 3rd control signal is at least in part based on the working state of motor with generate from the 3rd feedback signal of this second classification valve.
In one example, this the second classification valve comprises: spool, this spool is moveable to control the switch of this second classification valve in this second classification valve, this the second classification valve is not when closing to this pre-combustion grade secondary nozzle fuel feeding, and wherein this second solenoid valve provides modulation oil to regulate the position of this spool according to the 3rd control signal to this second classification valve; And proximity switch, this proximity switch is used for generating the 3rd feedback signal according to the switch of this second classification valve.
According to a further aspect in the invention, provide a kind of motor, comprising: firing chamber, this firing chamber comprises main combustion stage nozzle and pre-combustion grade nozzle; Fuel pump, this fuel pump is used for providing fuel oil; Hydromechanical Unit, this Hydromechanical Unit is coupled to this fuel pump for providing metering fuel oil; Electronic controller, this electronic controller is for generating control signal and accepting feedback signal; And fuel dispenser, this fuel dispenser comprises and distributes valve and electrohydraulic control, this distribution valve is coupled to this Hydromechanical Unit to receive this metering fuel oil, this electrohydraulic control controls this distribution valve to distribute the fuel oil being provided to this main combustion stage nozzle and this pre-combustion grade nozzle according to the first control signal from this electronic controller, and wherein this electronic controller is at least in part based on the working state of motor with generate this first control signal from the first feedback signal of this distribution valve.
In one example, this distribution valve comprises: spool, this spool is movably to regulate and distribute the amount of fuel to this main combustion stage nozzle and this pre-combustion grade nozzle in this distribution valve, wherein, this electrohydraulic control provides modulation oil to regulate the position of this spool according to this first control signal to this distribution valve; And linear displacement transducer, this linear displacement transducer is used for the position of this spool of perception to generate this first feedback signal.
In one example, this main combustion stage nozzle comprises main combustion stage first order jet nozzle along the hoop classification of this firing chamber and main combustion stage secondary nozzle, wherein this fuel dispenser also comprises: the first classification valve, and this first classification valve is coupled to this distribution valve with optionally to this main combustion stage first order jet nozzle and main combustion stage secondary nozzle fuel feeding; And first solenoid valve, whether this first solenoid valve controls this first classification valve switch according to the second control signal from electronic controller is to select to this main combustion stage secondary nozzle fuel feeding, and wherein this electronic controller is at least in part based on the working state of motor with generate this second control signal from the second feedback signal of this first classification valve.
In one example, this the first classification valve comprises: spool, this spool is moveable to control the switch of this first classification valve in this first classification valve, this the first classification valve is not when closing to this main combustion stage secondary nozzle fuel feeding, and wherein this first solenoid valve provides modulation oil to regulate the position of this spool according to this second control signal to this first classification valve; And proximity switch, this proximity switch is used for generating this second feedback signal according to the switch of this first classification valve.
In one example, this pre-combustion grade nozzle comprises pre-combustion grade first order jet nozzle along the hoop classification of this firing chamber and pre-combustion grade secondary nozzle, wherein this fuel dispenser also comprises: the second classification valve, and this second classification valve is coupled to this distribution valve with optionally to this pre-combustion grade first order jet nozzle and pre-combustion grade secondary nozzle fuel feeding; And second solenoid valve, whether this second solenoid valve controls this second classification valve switch according to the 3rd control signal from electronic controller is to select to this pre-combustion grade secondary nozzle fuel feeding, and wherein this electronic controller is at least in part based on the working state of motor with generate the 3rd control signal from the 3rd feedback signal of this second classification valve.
In one example, this the second classification valve comprises: spool, this spool is moveable to control the switch of this second classification valve in this second classification valve, this the second classification valve is not when closing to this pre-combustion grade secondary nozzle fuel feeding, and wherein this second solenoid valve provides modulation oil to regulate the position of this spool according to the 3rd control signal to this second classification valve; And proximity switch, this proximity switch is used for generating the 3rd feedback signal according to the switch of this second classification valve.
By all schemes of the present invention, hoop classification is carried out to the nozzles at different levels of firing chamber, and regulate the fuel delivery of firing chamber nozzle at different levels to carry out the equivalent proportion in the indoor each region of control combustion continuously, improve uniformity, the temperature, pressure, oil-gas ratio etc. in the indoor each region of Optimizing Combustion is come with this, thus reach improving combustion efficiency, reduce NO
x, the pollutant discharge amount such as CO object.
Accompanying drawing explanation
After the detailed description of reading embodiment of the present disclosure in conjunction with the following drawings, above-mentioned feature and advantage of the present invention can be understood better.In the accompanying drawings, each assembly is not necessarily drawn in proportion, and the assembly with similar correlation properties or feature may have identical or close reference character.
Fig. 1 shows the schematic diagram of fuel control system according to an aspect of the present invention;
Fig. 2 shows the schematic diagram of the fuel dispenser according to the first embodiment of the present invention;
Fig. 3 shows according to the electrohydraulic control in the fuel dispenser of the first embodiment of the present invention and the schematic diagram distributing valve;
Fig. 4 shows the schematic diagram of fuel dispenser according to a second embodiment of the present invention;
Fig. 5 shows the schematic diagram of solenoid valve in fuel dispenser according to a second embodiment of the present invention and classification valve; And
Fig. 6 shows the schematic diagram of fuel dispenser according to the third embodiment of the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.Note, the aspects described below in conjunction with the drawings and specific embodiments is only exemplary, and should not be understood to carry out any restriction to protection scope of the present invention.
For meeting the requirement of civilian motor low stain low emission, an aspect of of the present present invention provides a kind of engine combustion scheme efficiently.According to the program, non-combusted fuels distributor can according to the needs of the different working state of motor, the dynamically fuel flow of continuous setup supply firing chamber nozzle at different levels, and then the equivalent proportion in the indoor each region of control combustion, make it reach even, Optimizing Combustion efficiency, reduce pollutant emission.
Fig. 1 shows the schematic diagram of fuel control system 100 according to an aspect of the present invention.Fuel control system 100 comprises fuel pump 102, and fuel pump 102 takes out fuel oil with to combustion system fuel feeding from fuel tank pump.Fuel control system also can comprise the Hydromechanical Unit (HMU) 104 being coupled to fuel pump 102.HMU104 is the assembly that fuel oil can be provided to regulate for motor, such as HMU104 possesses the function of fuel metering and shutoff, thus under the control of electronic controller (EEC) 110, function of measuring is performed to the fuel oil from fuel pump 102, the fuel oil through metering is supplied to the combustion system of motor.
Fuel control system 100 also can comprise fuel dispenser 106.Fuel dispenser 106 can be used for the metering fuel distribution from HMU104 to the nozzle of firing chamber 108.The nozzle of firing chamber 108 generally has grading design, namely comprises pre-combustion grade nozzle 112 and main combustion stage nozzle 114.Such as, firing chamber 108 is generally ringwise, and pre-combustion grade nozzle 112 and main combustion stage nozzle 114 can annularly be arranged.As shown in Figure 1, pre-combustion grade nozzle 112 illustrates with less patterns of openings, and main combustion stage nozzle 114 illustrates with larger patterns of openings.
EEC110 is the Core Feature part of Full Authority Digital electronic control (FADEC) system, is for calculating and providing electronic control signal to realize the controller part of FADEC controlling functions to actuator in FADEC system.According to an aspect of the present invention, EEC110 according to the different operating state of motor, can produce control signal, to control the fuel distribution of fuel dispenser 106 by the fuel distribution demand of firing chamber nozzle at different levels.Fuel dispenser 106 can receive the control signal from EEC110, regulates and distributes the amount of fuel to pre-combustion grade nozzle 112 and main combustion stage nozzle 114 dynamically, continuously.
Fig. 2 shows the schematic diagram of the fuel dispenser 200 according to the first embodiment of the present invention.As shown in Figure 2, fuel dispenser 200 can comprise electrohydraulic control 204 and distribute valve 202.Distribute valve 202 and be coupled to HMU to receive metering fuel oil from HMU.Distribute valve 202 receive metering fuel oil after by fuel distribution to main combustion stage nozzle and pre-combustion grade nozzle.The fuel distribution of distributing valve 202 realizes under the manipulation of electrohydraulic control 204.
Electrohydraulic control 204 can receive the control signal from EEC, and based on this control signal by control between HMU oil and and the modulation oil distributed between valve 202 handle the valve opening size of distributing valve 202, thus regulate and be supplied to the amount of fuel of main combustion stage nozzle and pre-combustion grade nozzle respectively, this describes in detail at hereafter composition graphs 3.Distribute valve 202 and can send feedback signal to EEC, EEC can according to the control signal of the working state paired electrohydraulic control in next life of this feedback signal and motor.
The valve opening size of distributing valve 202 decides the flow resistance of main combustion stage runner.Therefore, electrohydraulic control 204 can regulate the flow resistance of main combustion stage runner by the valve opening size controlling to distribute valve 202, and then controls the amount of fuel being supplied to main combustion stage, and remaining fuel oil directly flows to pre-combustion grade, as shown in Figure 2.But, this just distributes the one of valve 202 dispense fuel illustrative and non-limiting example, those skilled in the art's easy understand can have other concrete methods of salary distribution, and such as, metering fuel oil from HMU all flows through distribution valve 202, and pre-combustion grade fuel oil is also flow out from distribution valve 202.
Under the working state of motor is in low-load working state, thus firing chamber fuel demand amount less time, EEC generates control signal to be closed completely by distribution valve 202, thus cuts off main combustion stage runner, now measures fuel oil and all feeds firing chamber by pre-combustion grade nozzle.Under the working state of motor is in high load working state, when firing chamber fuel demand amount is larger, EEC generates control signal so that distribution valve 202 is opened to different apertures according to the different duty requirements under high load.In such a state, the amount of fuel flowing into pre-combustion grade nozzle and main combustion stage nozzle respectively can be regulated.
Fig. 3 shows according to the electrohydraulic control in the fuel dispenser of the first embodiment of the present invention and the schematic diagram distributing valve.As shown in Figure 3, distribute valve 320 and can comprise moveable spool 324.The movement of spool 324 makes the valve opening of distributing valve 320 change, thus plays the effect of the amount of fuel regulated and distributed to main combustion stage nozzle and pre-combustion grade nozzle.Distribute valve 320 and also can comprise linear displacement transducer 322, such as linear variable difference transformer (LVDT), to sense the position of spool, i.e. the aperture size of valve, and EEC returns feedback signal with instruction by this position information.
Electrohydraulic control 310 can comprise torque motor 312 and hydraulic efficiency slide valve 314.EEC is according to the working state of motor and the optimum oil feeding judging oil nozzle at different levels from the feedback signal of distributing valve 320, and correspondingly generate control signal to be supplied to electrohydraulic control 310, such as this control signal indicates the valve opening size of distributing valve 320, i.e. the deviation post of spool.The torque motor 310 of electrohydraulic control 310 receives this control signal, according to the position of spool, produces suitable moment with hydraulic control guiding valve 314.Hydraulic efficiency slide valve receives from HMU and controls oil and provide modulation oil to distribution valve 320 under the moment of torque motor 312 applying.Flow to the modulation oil distributing valve 320 and comprise the high-voltage modulation oil and low-pressure adjusting liquefaction that flow to two control chambers distributing valve 320 respectively.By controlling the pressure of control chamber, realize the skew of the position of valve spool 324.Linear displacement transducer 322 can be coupled to this spool 324 with the position of perception spool 324, and generates the feedback signal being supplied to EEC.
According to the scheme of above-described embodiment, can regulate continuously to the fuel delivery between firing chamber pre-combustion grade and main combustion stage nozzle as required under oil condition each of motor, thus optimize the combustion efficiency of engine chamber, reduce motor pollutant discharge amount.
Fig. 4 shows the schematic diagram of fuel dispenser according to a second embodiment of the present invention.In this embodiment, the main combustion stage nozzle of firing chamber 500 is classified to main combustion stage first order jet nozzle 504 and main combustion stage secondary nozzle 506 on hoop.As shown in Figure 4, main combustion stage nozzle comprises the main combustion stage first order jet nozzle 504 of the upper semicircumference of annularly firing chamber and the main combustion stage secondary nozzle 506 along second circumference.But this is the illustrative of the classification of main combustion stage nozzle and non-limiting example.Other the hoop classification of those skilled in the art's easy understand, if such as firing chamber 500 is divided into four quadrants, first and the main combustion stage nozzle of third quadrant be divided into main combustion stage first order jet nozzle, second and the main combustion stage nozzle of fourth quadrant be divided into main combustion stage secondary nozzle, or several nozzles on hoop are divided into main combustion stage first order jet nozzle and main combustion stage secondary nozzle by interval.
The fuel dispenser 400 of Fig. 4 is with the difference of the fuel dispenser 200 of Fig. 2, and except electrohydraulic control 404 and distribution valve 402, fuel dispenser 400 also can comprise solenoid valve 408 and classification valve 406.Electrohydraulic control 404 and to distribute the operation of valve 402 similar with the operation distributing valve 202 with the electrohydraulic control 204 in Fig. 2, repeats no more.
As shown in Figure 4, classification valve 406 can be coupled to and distribute valve 402 to receive the fuel oil distributing to main combustion stage, and optionally to main combustion stage first order jet nozzle 504 and main combustion stage secondary nozzle 506 fuel feeding.Particularly, classification valve 406 can comprise switch two states.Under open state, runner towards main combustion stage secondary nozzle 506 is opened, be simultaneously provided to main combustion stage first order jet nozzle 504 and main combustion stage secondary nozzle 506 from the fuel oil distributing valve 402, under off status, runner towards main combustion stage secondary nozzle 506 is cut off, and flows to main combustion stage first order jet nozzle 504 completely from the fuel oil distributing valve 402.
The on off state of classification valve 406 handles realization by solenoid valve 408.Solenoid valve 408 can receive the control signal from EEC, and based on this control signal by control between HMU oil and and classification valve 406 between modulation oil carry out the switch of Nagivating hierarchically valve 406, thus controlling whether to select to main combustion stage secondary nozzle 406 fuel feeding, this describes in detail at hereafter composition graphs 5.Classification valve 406 can to EEC feedback signal, thus EEC can according to the control signal of the working state paired solenoid valve 408 in next life of this feedback signal and motor.
Under the working state of motor is in low-load working state, thus firing chamber fuel demand amount less time, EEC generates control signal to be closed completely by distribution valve 202, thus cuts off main combustion stage runner, now measures fuel oil and all feeds firing chamber 500 by pre-combustion grade nozzle 502.
When the working state of motor transfers higher load to from low-load gradually, thus firing chamber fuel demand amount larger time, EEC generates control signal according to different duty requirements, to control electrohydraulic control 404, distribution valve 402 is opened to different apertures, generates control signal simultaneously and closes classification valve 406 with Controlling solenoid valve 408.In such a state, simultaneously to pre-combustion grade nozzle 502 and main combustion stage first order jet nozzle 504 fuel feeding, and by the control signal of EEC to the control distributing valve 402, the amount of fuel flowing into pre-combustion grade nozzle 502 and main combustion stage first order jet nozzle 504 respectively can be regulated.
When the working state of motor transfers more high load to, thus when firing chamber fuel demand amount is larger, EEC generates control signal according to the fuel demand of this working state and opens classification valve 406 with Controlling solenoid valve 408.Now, the fuel oil distributing to main combustion stage by distributing valve 402 flows to main combustion stage first order jet nozzle 504 and main combustion stage secondary nozzle 506 simultaneously, and by the control signal of EEC to the control distributing valve 402, the amount of fuel flowing into pre-combustion grade nozzle 502 and main combustion stage first order jet nozzle 504, main combustion stage secondary nozzle 506 respectively can be regulated.
Fig. 5 shows the schematic diagram of solenoid valve in fuel dispenser according to a second embodiment of the present invention and classification valve.As shown in Figure 5, be similar to distribution valve, classification valve 520 also can comprise spool 524.The movement of spool 524 makes the on off state of classification valve 520 change, thus plays the effect of the switch controlling classification valve 520.Classification valve 520 also can comprise proximity switch to sense the position of spool, thus the switch of sensing classification valve 520, and return feedback signal to indicate the on off state of classification valve 520 to EEC.
Solenoid valve 510 can comprise electromagnetic assembly 512, and the break-make of this electromagnetic assembly 512 can change the runner of the modulation oil between solenoid valve 510 and classification valve 520.Such as, under the on state of electromagnetic assembly 512 and off state conversion, solenoid valve 510 leads to the high pressure runner of the modulation oil of classification valve 520 and low pressure runner also can correspondingly change, and such as former high pressure runner becomes low pressure runner, and low pressure runner becomes high pressure runner, vice versa.Now, the change of high low pressure runner causes the relative high low pressure of the both sides control chamber of classification valve 520 to change, thus allows the position of spool 524 change, and causes the switching of the switch of classification valve 520.
During operation, EEC judges whether to need to main combustion stage secondary nozzle fuel feeding according to the working state of motor with from the feedback signal of classification valve 520, and correspondingly generates control signal according to this to be supplied to the switch that solenoid valve 510 controls classification valve 520.Solenoid valve 510 carrys out the switch of Nagivating hierarchically valve 520 according to this control signal.Proximity switch 522 can be coupled to this spool 524 with the position of perception spool 524, i.e. the on off state of perception classification valve 520, and generates the feedback signal being supplied to EEC.
According to above-described embodiment, by to the classification of main combustion stage nozzle on hoop, regulate as required more subtly to the fuel delivery between firing chamber pre-combustion grade, main combustion stage firsts and seconds nozzle, optimize the combustion efficiency of engine chamber further, reduce motor pollutant discharge amount.
In addition, under some fuel supply flow rate states, by Controlling solenoid valve so that classification valve is closed, make to only have main combustion stage first order jet nozzle fuel feeding, realize the classification of main combustion stage nozzle on hoop, due to the minimizing of fuel nozzle, add the fuel flow on single-nozzle, namely produce fuel pressure drop larger on nozzle with less fuel flow, promote the atomizing effect of fuel oil thus, coordinate firing chamber to realize reducing the requirement of pollutant emission.
Fig. 6 shows the schematic diagram of fuel dispenser according to the third embodiment of the invention.In this embodiment, firing chamber 700 is except main combustion stage nozzle is classified to main combustion stage first order jet nozzle 706 and main combustion stage secondary nozzle 708 on hoop, and pre-combustion grade nozzle is also classified to pre-combustion grade first order jet nozzle 702 and pre-combustion grade secondary nozzle 704 on hoop.As shown in the figure, pre-combustion grade nozzle comprises the pre-combustion grade first order jet nozzle 702 of the upper semicircumference of annularly firing chamber and the pre-combustion grade secondary nozzle 504 along second circumference.But this is the illustrative of the classification of pre-combustion grade nozzle and non-limiting example.Other the hoop classification of those skilled in the art's easy understand, if such as firing chamber 500 is divided into four quadrants, first and the pre-combustion grade nozzle of third quadrant be divided into pre-combustion grade first order jet nozzle, second and the pre-combustion grade nozzle of fourth quadrant be divided into pre-combustion grade secondary nozzle, or several nozzles on hoop are divided into pre-combustion grade first order jet nozzle and pre-combustion grade secondary nozzle by interval.
The fuel dispenser 600 of Fig. 6 is with the difference of the fuel dispenser of Fig. 4, and except electrohydraulic control 604 with distribute except valve 602 and solenoid valve 608 and classification valve 606, fuel dispenser 600 also can comprise solenoid valve 612 and classification valve 610.Electrohydraulic control 604 and the electrohydraulic control 404 distributed in the operation of valve 602 and solenoid valve 608 and classification valve 606 and Fig. 4 and to distribute the operation of valve 402 and solenoid valve 408 and classification valve 406 similar, repeat no more.
As shown in the figure, classification valve 610 can be coupled to and distribute valve 602 with optionally to pre-combustion grade first order jet nozzle 702 and pre-combustion grade secondary nozzle 704 fuel feeding.Particularly, classification valve 610 can comprise switch two states.Under open state, runner towards pre-combustion grade secondary nozzle 704 is opened, the fuel oil that distribution valve 602 distributes to pre-combustion grade is simultaneously provided to pre-combustion grade first order jet nozzle 702 and pre-combustion grade secondary nozzle 704, under off status, runner towards main combustion stage secondary nozzle 506 is cut off, and the fuel oil that distribution valve 602 distributes to pre-combustion grade flows to pre-combustion grade first order jet nozzle 702 completely.
The on off state of classification valve 610 handles realization by solenoid valve 612.Solenoid valve 612 can receive the control signal from EEC, and based on this control signal by control between HMU oil and and classification valve 610 between modulation oil carry out the switch of Nagivating hierarchically valve 610, thus control whether to select to pre-combustion grade secondary nozzle 704 fuel feeding.Classification valve 610 can to EEC feedback signal, thus EEC can according to the control signal of the working state paired solenoid valve 612 in next life of this feedback signal and motor.
When the working state of motor is in very under low-load working state, thus firing chamber fuel demand amount very little time, EEC generates control signal to be closed completely by distribution valve 602, thus cut off main combustion stage runner, generate control signal to be closed by classification valve 610 simultaneously, thus cut off pre-combustion grade secondary runner, now measure fuel oil and all feed firing chamber 700 by pre-combustion grade first order jet nozzle 702.
When the working state of motor transfers slightly higher load condition to, thus firing chamber fuel demand amount slightly high time, EEC generates control signal to be closed completely by distribution valve 602, thus cut off main combustion stage runner, generate control signal to be opened by classification valve 610 simultaneously, thus conducting pre-combustion grade secondary runner, now measure fuel oil and feed firing chamber 700 by pre-combustion grade first order jet nozzle 702 and pre-combustion grade secondary nozzle 704 simultaneously.
When the working state of motor transfers higher load operating mode to, thus firing chamber fuel demand amount higher time, stay open except state except making classification valve 610, distribution valve 602 is also opened to different apertures by the control signal that EEC generates, and generates control signal simultaneously and closes classification valve 606 with Controlling solenoid valve 608.In such a state, simultaneously to pre-combustion grade first order jet nozzle 702, pre-combustion grade secondary nozzle 704 and main combustion stage first order jet nozzle 706 fuel feeding, and by the control signal of EEC to the control distributing valve 602, the amount of fuel flowing into pre-combustion grade first order jet nozzle 702, pre-combustion grade secondary nozzle 704 and main combustion stage first order jet nozzle 706 respectively can be regulated.
When the working state of motor transfers very high load operating mode to, thus when firing chamber fuel demand amount is very high, the control signal that EEC generates also Controlling solenoid valve 608 opens classification valve 606.In such a state, distribute the fuel oil that valve 602 distributes to main combustion stage and flow to main combustion stage first order jet nozzle 706 and main combustion stage secondary nozzle 708 simultaneously.By the control signal of EEC to the control distributing valve 602, the amount of fuel flowing into pre-combustion grade first order jet nozzle 702, pre-combustion grade secondary nozzle 704 and main combustion stage first order jet nozzle 706, main combustion stage secondary nozzle 708 respectively can be regulated.
Note, in figure 6, EEC is to electrohydraulic control 604, be illustrated as three independently control signals to solenoid valve 608 with to the control signal of solenoid valve 612, but one of ordinary skill in the art will readily recognize that EEC also can generate the overall control signal being simultaneously input to electrohydraulic control 604, solenoid valve 608 and solenoid valve 612.
Solenoid valve 612 is similar with classification valve 606 to solenoid valve 608 with maneuverability pattern with the detailed construction of classification valve 610, and therefore not to repeat here.
According to above-described embodiment, by the classification on hoop to main combustion stage nozzle and pre-combustion grade nozzle, regulate to the fuel delivery between firing chamber pre-combustion grade firsts and seconds and main combustion stage firsts and seconds nozzle continuously as required more subtly, optimize the combustion efficiency of engine chamber further, reduce motor pollutant discharge amount.
In addition, under some fuel supply flow rate states, by Controlling solenoid valve so that classification valve is closed, make it possible to only have pre-combustion grade first order jet nozzle or main combustion stage first order jet nozzle fuel feeding, realize main combustion stage nozzle and the classification of pre-combustion grade nozzle on hoop, due to the minimizing of fuel nozzle, add the fuel flow on single-nozzle, namely produce fuel pressure drop larger on nozzle with less fuel flow, promote the atomizing effect of fuel oil thus, coordinate firing chamber to realize reducing the requirement of pollutant emission.
Describe fuel dispenser system of the present invention above in conjunction with the embodiments, but should be appreciated that scope of the present invention is not limited to above-described embodiment.Such as, fuel dispenser also can be embodied as the classification valve only having and distribute valve and pre-combustion grade nozzle is carried out to hoop classification, and main combustion stage nozzle is not carried out to the classification valve of hoop classification.
By all schemes of the present invention, hoop classification is carried out to the nozzles at different levels of firing chamber, and regulate the fuel delivery of firing chamber nozzle at different levels to carry out the equivalent proportion in the indoor each region of control combustion continuously, improve uniformity, the temperature, pressure, oil-gas ratio etc. in the indoor each region of Optimizing Combustion is come with this, thus reach improving combustion efficiency, reduce NO
x, the pollutant discharge amount such as CO object.
Thering is provided previous description of the present disclosure is for making any person skilled in the art all can make or use the disclosure.To be all apparent for a person skilled in the art to various amendment of the present disclosure, and generic principles as defined herein can be applied to other variants and can not depart from spirit or scope of the present disclosure.Thus, the disclosure not intended to be is defined to example described herein and design, but the widest scope consistent with principle disclosed herein and novel features should be awarded.
Claims (13)
1. a fuel dispenser, comprising:
Distribute valve, described distribution valve receives metering fuel oil and is provided to the main combustion stage nozzle of firing chamber and the fuel oil of pre-combustion grade nozzle to distribute; And
Electrohydraulic control, described electrohydraulic control controls described distribution valve according to the first control signal and is provided to the fuel oil of described main combustion stage nozzle and described pre-combustion grade nozzle to distribute, and described first control signal is at least in part based on the working state of motor with generate from the first feedback signal of described distribution valve.
2. fuel dispenser as claimed in claim 1, it is characterized in that, described distribution valve comprises:
Spool, described spool is moveable to regulate and distribute the amount of fuel to described main combustion stage nozzle and described pre-combustion grade nozzle in described distribution valve, wherein, described electrohydraulic control provides modulation oil to regulate the position of described spool according to described first control signal to described distribution valve; And
Linear displacement transducer, described linear displacement transducer is used for the position of spool described in perception to generate described first feedback signal.
3. fuel dispenser as claimed in claim 2, described linear displacement transducer comprises linear variable difference transformer.
4. fuel dispenser as claimed in claim 1, is characterized in that, described main combustion stage nozzle comprises main combustion stage first order jet nozzle along the hoop classification of described firing chamber and main combustion stage secondary nozzle, and wherein said fuel dispenser also comprises:
First classification valve, described first classification valve is coupled to described distribution valve with optionally to described main combustion stage first order jet nozzle and main combustion stage secondary nozzle fuel feeding; And
First solenoid valve, described first solenoid valve controls the switch of described first classification valve whether to select to described main combustion stage secondary nozzle fuel feeding according to the second control signal, described second control signal is at least in part based on the working state of motor with generate from the second feedback signal of described first classification valve.
5. fuel dispenser as claimed in claim 4, it is characterized in that, described first classification valve comprises:
Spool, described spool is moveable to control the switch of described first classification valve in described first classification valve, described first classification valve is not when closing to described main combustion stage secondary nozzle fuel feeding, and wherein said first solenoid valve provides modulation oil to regulate the position of described spool according to described second control signal to described first classification valve; And
Proximity switch, described proximity switch is used for generating described second feedback signal according to the switch of described first classification valve.
6. fuel dispenser as claimed in claim 1, is characterized in that, described pre-combustion grade nozzle comprises pre-combustion grade first order jet nozzle along the hoop classification of described firing chamber and pre-combustion grade secondary nozzle, and wherein said fuel dispenser also comprises:
Second classification valve, described second classification valve is coupled to described distribution valve with optionally to described pre-combustion grade first order jet nozzle and pre-combustion grade secondary nozzle fuel feeding; And
Second solenoid valve, described second solenoid valve controls the switch of described second classification valve whether to select to described pre-combustion grade secondary nozzle fuel feeding according to the 3rd control signal, described 3rd control signal is at least in part based on the working state of motor with generate from the 3rd feedback signal of described second classification valve.
7. fuel dispenser as claimed in claim 6, it is characterized in that, described second classification valve comprises:
Spool, described spool is moveable to control the switch of described second classification valve in described second classification valve, described second classification valve is not when closing to described pre-combustion grade secondary nozzle fuel feeding, and wherein said second solenoid valve provides modulation oil to regulate the position of described spool according to described 3rd control signal to described second classification valve; And
Proximity switch, described proximity switch is used for generating described 3rd feedback signal according to the switch of described second classification valve.
8. a motor, comprising:
Firing chamber, described firing chamber comprises main combustion stage nozzle and pre-combustion grade nozzle;
Fuel pump, described fuel pump is used for providing fuel oil;
Hydromechanical Unit, described Hydromechanical Unit is coupled to described fuel pump for providing metering fuel oil;
Electronic controller, described electronic controller is for generating control signal and accepting feedback signal; And
Fuel dispenser, described fuel dispenser comprises and distributes valve and electrohydraulic control, described distribution valve is coupled to described Hydromechanical Unit to receive described metering fuel oil, described electrohydraulic control controls described distribution valve to distribute the fuel oil being provided to described main combustion stage nozzle and described pre-combustion grade nozzle according to the first control signal from described electronic controller, and wherein said electronic controller is at least in part based on the working state of motor and described first control signal of the first feedback signal generation from described distribution valve.
9. motor as claimed in claim 8, it is characterized in that, described distribution valve comprises:
Spool, described spool is moveable to regulate and distribute the amount of fuel to described main combustion stage nozzle and described pre-combustion grade nozzle in described distribution valve, wherein, described electrohydraulic control provides modulation oil to regulate the position of described spool according to described first control signal to described distribution valve; And
Linear displacement transducer, described linear displacement transducer is used for the position of spool described in perception to generate described first feedback signal.
10. motor as claimed in claim 8, is characterized in that, described main combustion stage nozzle comprises main combustion stage first order jet nozzle along the hoop classification of described firing chamber and main combustion stage secondary nozzle, and wherein said fuel dispenser also comprises:
First classification valve, described first classification valve is coupled to described distribution valve with optionally to described main combustion stage first order jet nozzle and main combustion stage secondary nozzle fuel feeding; And
First solenoid valve, described first solenoid valve controls the switch of described first classification valve whether to select to described main combustion stage secondary nozzle fuel feeding according to the second control signal from described electronic controller, wherein said electronic controller is at least in part based on the working state of motor with generate described second control signal from the second feedback signal of described first classification valve.
11. motors as claimed in claim 10, is characterized in that, described first classification valve comprises:
Spool, described spool is moveable to control the switch of described first classification valve in described first classification valve, described first classification valve is not when closing to described main combustion stage secondary nozzle fuel feeding, and wherein said first solenoid valve provides modulation oil to regulate the position of described spool according to described second control signal to described first classification valve; And
Proximity switch, described proximity switch is used for generating described second feedback signal according to the switch of described first classification valve.
12. motors as claimed in claim 8, is characterized in that, described pre-combustion grade nozzle comprises pre-combustion grade first order jet nozzle along the hoop classification of described firing chamber and pre-combustion grade secondary nozzle, and wherein said fuel dispenser also comprises:
Second classification valve, described second classification valve is coupled to described distribution valve with optionally to described pre-combustion grade first order jet nozzle and pre-combustion grade secondary nozzle fuel feeding; And
Second solenoid valve, described second solenoid valve controls the switch of described second classification valve whether to select to described pre-combustion grade secondary nozzle fuel feeding according to the 3rd control signal from described electronic controller, wherein said electronic controller generates described 3rd control signal based on the 3rd feedback signal from described second classification valve at least in part.
13. motors as claimed in claim 12, is characterized in that, described second classification valve comprises:
Spool, described spool is moveable to control the switch of described second classification valve in described second classification valve, described second classification valve is not when closing to described pre-combustion grade secondary nozzle fuel feeding, and wherein said second solenoid valve provides modulation oil to regulate the position of described spool according to described 3rd control signal to described second classification valve; And
Proximity switch, described proximity switch is used for generating described 3rd feedback signal according to the switch of described second classification valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310666254.2A CN104696126B (en) | 2013-12-10 | 2013-12-10 | Fuel dispenser and the engine using the fuel dispenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310666254.2A CN104696126B (en) | 2013-12-10 | 2013-12-10 | Fuel dispenser and the engine using the fuel dispenser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104696126A true CN104696126A (en) | 2015-06-10 |
| CN104696126B CN104696126B (en) | 2018-06-22 |
Family
ID=53343587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310666254.2A Active CN104696126B (en) | 2013-12-10 | 2013-12-10 | Fuel dispenser and the engine using the fuel dispenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104696126B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035829A (en) * | 2017-11-08 | 2018-05-15 | 中国航发北京航科发动机控制系统科技有限责任公司 | A kind of airliner engine fuel control unit |
| CN109578151A (en) * | 2019-01-31 | 2019-04-05 | 中国航发动力股份有限公司 | A kind of gas turbine fuel dispenser |
| CN114033557A (en) * | 2021-11-30 | 2022-02-11 | 中国航发湖南动力机械研究所 | Function integration fuel valve assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4337616A (en) * | 1980-04-14 | 1982-07-06 | General Motors Corporation | Fuel air ratio controlled fuel splitter |
| CN1069561A (en) * | 1991-08-12 | 1993-03-03 | 通用电气公司 | The fuel supply system of double annular combustion chamber |
| US5442922A (en) * | 1993-12-09 | 1995-08-22 | United Technologies Corporation | Fuel staging system |
| CN102144131A (en) * | 2008-09-08 | 2011-08-03 | 西门子能源公司 | Method and system for controlling fuel to a dual stage nozzle |
| CN103161631A (en) * | 2011-12-12 | 2013-06-19 | 中航商用航空发动机有限责任公司 | Fuel oil distributor used in motor |
-
2013
- 2013-12-10 CN CN201310666254.2A patent/CN104696126B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4337616A (en) * | 1980-04-14 | 1982-07-06 | General Motors Corporation | Fuel air ratio controlled fuel splitter |
| CN1069561A (en) * | 1991-08-12 | 1993-03-03 | 通用电气公司 | The fuel supply system of double annular combustion chamber |
| US5442922A (en) * | 1993-12-09 | 1995-08-22 | United Technologies Corporation | Fuel staging system |
| CN102144131A (en) * | 2008-09-08 | 2011-08-03 | 西门子能源公司 | Method and system for controlling fuel to a dual stage nozzle |
| CN103161631A (en) * | 2011-12-12 | 2013-06-19 | 中航商用航空发动机有限责任公司 | Fuel oil distributor used in motor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035829A (en) * | 2017-11-08 | 2018-05-15 | 中国航发北京航科发动机控制系统科技有限责任公司 | A kind of airliner engine fuel control unit |
| CN108035829B (en) * | 2017-11-08 | 2021-08-06 | 中国航发北京航科发动机控制系统科技有限公司 | Fuel control device for large passenger plane engine |
| CN109578151A (en) * | 2019-01-31 | 2019-04-05 | 中国航发动力股份有限公司 | A kind of gas turbine fuel dispenser |
| CN109578151B (en) * | 2019-01-31 | 2020-12-29 | 中国航发动力股份有限公司 | Fuel distributor of gas turbine |
| CN114033557A (en) * | 2021-11-30 | 2022-02-11 | 中国航发湖南动力机械研究所 | Function integration fuel valve assembly |
| CN114033557B (en) * | 2021-11-30 | 2022-12-06 | 中国航发湖南动力机械研究所 | Function integration fuel valve assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104696126B (en) | 2018-06-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1711411B (en) | Exhaust gas recirculation methods and apparatus for reducing NOx emissions from internal combustion engines | |
| CN1670348B (en) | Controlled pressure fuel nozzle system | |
| CN101040148B (en) | Method for operation of a burner in particular a burner for a gas turbine and device for carrying out said method | |
| CN101506509A (en) | Concurrent injection of liquid and gaseous fuels in an engine | |
| CN104533639B (en) | Based on dual-fuel engine combustion system and the method for switchable type oil sprayer | |
| CN102171515B (en) | Burner and method for operating a burner | |
| KR20210118141A (en) | diesel engine | |
| CN109268170B (en) | Composite gas supply dual-fuel engine system with double needle valve oil injector and combustion method | |
| CN104696126A (en) | Fuel oil distributor and engine using fuel oil distributor | |
| KR20130031354A (en) | Secondary water injection for diffusion combustion systems | |
| CN103443429B (en) | Fuel injection control device for internal combustion engine | |
| CN107143880A (en) | A kind of direct injector head of oil-poor multiple spot for low-pollution burning chamber of gas turbine | |
| US11242806B2 (en) | Method of controlling fuel injection in a reheat combustor for a combustor unit of a gas turbine | |
| EP2789916B1 (en) | Combustion chamber | |
| CN105089879A (en) | Internal combustion engine intake pipeline with separation and guide structure | |
| CN204402678U (en) | Based on the dual-fuel engine combustion system of switchable type oil sprayer | |
| CN102454984B (en) | Air channel ignition system and ignition burner under bed | |
| US11085375B2 (en) | Systems for fuel distribution in a combustor assembly for a gas turbine engine | |
| CN201059561Y (en) | Coal gas and combustion air double regulated internal-burning type gas burner | |
| WO2009091685A1 (en) | Fuel injection device for an internal combustion engine, and associated method | |
| CN108779741A (en) | Gas injector device and method | |
| Naumov et al. | New diesel engine fuel supply system able to control pressure of pre-and post-main injections | |
| CN104755742B (en) | Fuel injection arrangement | |
| CN103807878B (en) | A kind of combustion chamber fuel oil sprays and mixing arrangement and the combustion chamber comprising this device | |
| CN115597089B (en) | Cyclone assembly, multi-point staged lean direct injection combustor and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 200241 Minhang District Lianhua Road, Shanghai, No. 3998 Applicant after: China Hangfa commercial aviation engine limited liability company Address before: 201108 Shanghai city Minhang District Lotus Road No. 3998 Applicant before: AVIC Commercial Aircraft Engine Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |