CN104832293B - Vehicle pump oil amount adjustment method, fuel oil supply system, fuel pump governor and oil pump - Google Patents
Vehicle pump oil amount adjustment method, fuel oil supply system, fuel pump governor and oil pump Download PDFInfo
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- CN104832293B CN104832293B CN201410764083.1A CN201410764083A CN104832293B CN 104832293 B CN104832293 B CN 104832293B CN 201410764083 A CN201410764083 A CN 201410764083A CN 104832293 B CN104832293 B CN 104832293B
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Abstract
The invention discloses a kind of vehicle pump oil amount adjustment method, comprises the steps：S1 theoretical fuel demand amount signal is calculated according to current air- distributor pressure signal and current fuel injection pulsewidth signal)；S2) according to theoretical fuel demand amount signal of change theory fuel demand amount and the working speed of pump core；S3) pump core is driven to rotate for the oil in fuel tank to be delivered to flowline according to working speed；S4 the oil pump capacity signal for) gathering flowline obtains actual oil pump capacity；S5) if actual oil pump capacity is consistent with theoretical fuel demand amount, the working speed of pump core is constant；If actual oil pump capacity is inconsistent with theoretical fuel demand amount, theoretical fuel demand amount is modified to, continuation step S2 S4 consistent with actual oil pump capacity；S6) every the working cycles of at least one engine, repeat step S1 S5.The vehicle pump oil amount adjustment method of the present invention can make fuel feeding more accurate, economical according to the fuel demand fuel feeding of car load.
Description
Technical field
The present invention relates to vehicle fuel control field, more particularly, to a kind of vehicle pump oil amount adjustment method, fuel delivery
System, fuel pump governor and oil pump.
Background technology
Existing fuel oil supply system technical scheme is：After vehicle electronic system is powered, FP Fuel Pump Relay adhesive, electronics combustion
Oil pump constantly will be pumped in the oil pipe outside fuel tank after the fuel oil pressurization in fuel tank.The control system of pump oil amount in current oil supply system
Unite as closed-loop control, more than actual fuel demand amount, the excess fuel for pumping out flows into oil pipe and can lead the pump oil amount of usual oil pump
Fuel pressure in cause oil pipe constantly rises.For this purpose, relief valve is installed to solve tubing pressure on oil pipe, when the fuel oil in oil pipe
When pressure is more than the Opening pressure of relief valve, excess fuel is back in fuel tank by relief valve, makes the fuel pressure in oil pipe
Keep constant.
But, said structure still suffers from following problem：
1st, the control mode of pump oil amount is opened loop control, and pump oil amount can not be adjusted according to car load demand, control essence
Degree is low；
2nd, the excess fuel for pumping out easily is heated in oil pipe, raises fuel oil temperature, and too high fuel oil temperature easily exists
Vapour lock is formed in oil circuit, unstable engine operation, auto extinguishing or heat engine fail to start is caused.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.For this purpose, the present invention is carried
Go out a kind of vehicle pump oil amount adjustment method.
The invention allows for a kind of fuel oil supply system, fuel pump governor and oil pump.
The vehicle pump oil amount adjustment method of the embodiment of the present invention comprises the steps：S1) according to current air- distributor pressure
Signal and current fuel injection pulsewidth signal are calculated theoretical fuel demand amount signal；S2) believed according to the theoretical fuel demand amount
Number calculate the working speed of theoretical fuel demand amount and pump core；S3) pump core is driven to be rotated according to the working speed with by fuel tank
Interior oil is delivered to flowline；S4 the oil pump capacity signal for) gathering flowline obtains actual oil pump capacity；S5) if described actually go out
Oil mass is consistent with the theoretical fuel demand amount, then the working speed of pump core is constant；If the actual oil pump capacity and the reason
It is inconsistent by fuel demand amount, the theoretical fuel demand amount is modified to, continuation step S2-S4 consistent with actual oil pump capacity；
S6) every the working cycles of at least one engine, repeat step S1-S5.
Vehicle pump oil amount adjustment method according to embodiments of the present invention, can make fuel feeding according to the fuel demand fuel feeding of car load
It is more accurate, economical.
Preferably, in step S6, every an engine operational cycle, repeat step S1-S5.
Preferably, also comprise the steps between step S1 and S2：S11 the fuel pressure signal of flowline) is gathered, is judged
Whether actual fuel pressure is in the range of normal fuel pressure；S12) if actual fuel pressure is more than maximum normal fuel oil pressure
Power, drives the part oil of flowline to let out oil return box, continues step S2；S13) if actual fuel pressure is less than minimum normal fuel oil
Pressure, then according to actual fuel pressure revised theory fuel demand amount signal, continue step S2；S14) if actual fuel pressure
In the range of normal fuel pressure, continue step S2.
Preferably, if being above maximum normal fuel pressure for continuous three times or being below minimum normal fuel pressure, drive
Dynamic warning device is reported to the police.
Preferably, the collection point of the oil pump capacity signal is one end of neighbouring pump core on flowline.
The fuel oil supply system of the above-mentioned vehicle pump oil amount adjustment method of employing according to embodiments of the present invention includes：Oil
Case；Flowline, the flowline are provided with for gathering the first flow sensor of oil pump capacity signal；Fuel pump, the fuel oil
Pump has pump core, and one end of the fuel pump is connected with the fuel tank and the other end of the fuel pump and the one of the flowline
Oil in the fuel tank is input to flowline by end connection；Inlet manifold, the inlet manifold are another with the flowline
End connection；Controller；Fuel pump governor, the fuel pump governor and the pump core, the controller and the first flow
Sensor is electrically connected；The fuel pump governor includes signal acquisition module, signal processing module and signal output module, described
Signal processing module is electrically connected with the signal acquisition module, and the signal output module is electrically connected with the signal processing module
Connect, the signal acquisition module is used to gather current air- distributor pressure signal and the current fuel injection pulsewidth that the controller sends
The oil pump capacity signal that signal and first flow sensor send, the signal processing module is for according to current inlet manifold pressure
Force signal and current fuel injection pulsewidth signal calculate theoretical fuel demand amount signal, and according to fuel demand amount signal of change pump core
Working speed and when theoretical fuel demand amount signal and oil pump capacity signal are inconsistent, according to correction formula V=f (X, Y)=X
+ aY+k, V are the magnitude of voltage corresponding to theoretical fuel demand amount signal, and X is the corresponding magnitude of voltage of current manifold pressure signal, and Y is
The corresponding magnitude of voltage of current fuel injection pulsewidth signal, a is the correction factor related to injector characteristics, and k is the total of other corrections
With now choose suitable a values the theoretical fuel demand amount is modified to, the signal output consistent with actual oil pump capacity
Module is for being sent to pump core by working speed signal.
Fuel oil supply system according to embodiments of the present invention, can make fuel feeding more smart according to the fuel demand fuel feeding of car load
Really, it is economical.
Preferably, the flowline includes fuel-displaced main road and oil return branch road, and the fuel-displaced main road connects the air inlet discrimination
Pipe and the fuel pump, the oil return branch road are drawn and are connected with fuel tank from the fuel-displaced main road；The fuel oil supply system is also
Including oil pressure regulator, the oil pressure regulator is located on the oil return branch road, and the oil pressure regulator is adjusted with the oil pump
Section device connection；The oil pressure regulator gathers the fuel pressure signal of the flowline, and the fuel pressure signal is sent
To the fuel pump governor, the signal acquisition module gathers the fuel pressure signal, and the signal processing module compares institute
Actual fuel pressure and normal fuel pressure scope are stated, if the actual fuel pressure is more than maximum normal fuel pressure,
The signal output module sends signal to the oil pressure regulator, to control the unlatching of oil return branch road；If the actual combustion
Oil pressure chooses suitable k values with to theoretical fuel demand amount less than minimum normal fuel pressure, the then signal processing module
It is modified.
Preferably, the signal processing module judges whether the actual fuel pressure of the flowline of continuous three times is high
In maximum normal fuel pressure or be below minimum normal fuel pressure, the signal output module be connected with the controller with
Alarm signal is sent to the controller.
Preferably, the fuel-displaced main road is provided with cleaner, and the cleaner is located on the fuel-displaced main road described in Jing and returns
In branch after oily branch road shunting, the first flow sensor is located on the cleaner, to gather the oil pump capacity signal.
Preferably, the oil pressure regulator is provided with for gathering the second flow sensor of recirculating oil quantity signal, the oil
Level sensor and the second flow sensor are electrically connected with the fuel pump governor.
Fuel pump governor according to embodiments of the present invention includes：Signal acquisition module, the signal acquisition module are used to adopt
Collect the oil pump capacity signal that current air- distributor pressure signal and current fuel injection pulsewidth signal and first flow sensor send；Letter
Number processing module, the signal processing module are electrically connected with the signal acquisition module, and the signal processing module is used for basis
Current air- distributor pressure signal and current fuel injection pulsewidth signal calculate theoretical fuel demand amount signal, and according to fuel demand amount
The working speed of signal of change pump core and when theoretical fuel demand amount and actual oil pump capacity are inconsistent, according to correction formula V
=f (X, Y)=X+aY+k, V are the magnitude of voltage corresponding to theoretical fuel demand amount signal, and X is that current manifold pressure signal is corresponding
Magnitude of voltage, Y is the corresponding magnitude of voltage of current fuel injection pulsewidth signal, and a is the correction factor related to injector characteristics, and k is which
The summation of its correction, it is consistent with actual oil pump capacity so that the theoretical fuel demand amount to be modified to now to choose suitable a values；
And signal output module, the signal output module electrically connected with the signal processing module, and the signal output module is used
In working speed signal is sent to pump core.
Fuel pump governor according to embodiments of the present invention, can adjust fuel delivery according to the fuel demand of car load, make fuel feeding more
Plus it is accurate, economical.
Oil pump according to embodiments of the present invention includes：Fuel pump；And described fuel pump governor, the fuel pump governor
Including circuit board and protective cover, the circuit board is provided with the signal acquisition module, the signal processing module and institute
State signal output module, one end of the protective cover is pivotally connected with the fuel pump, the other end of the protective cover with it is described
Fuel pump clamping, the protective cover limit guard space with the fuel pump, and the guard space is located at outside the fuel pump,
The circuit board is located in the guard space.
Oil pump according to embodiments of the present invention not only can adjust fuel delivery according to the fuel demand of car load, make fuel feeding more smart
Really, it is economical；And fuel pump governor is integrated with fuel pump, compact conformation, reliability are high.
Preferably, the fuel pump governor is located on the pump cover of the fuel pump.
Preferably, the protective cover is provided with air-vent, and the air-vent is connected with the guard space.
Preferably, the lower end of the protective cover has sealing ring, and stopping for the sealing ring is against on the fuel pump.
The additional aspect and advantage of the present invention will be set forth in part in the description, and partly will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from the description with reference to accompanying drawings below to embodiment
It is substantially and easy to understand, wherein：
Fig. 1 is the flow chart of vehicle pump oil amount adjustment method according to embodiments of the present invention.
Fig. 2 is the flow chart of the oil pressure regulation part of vehicle pump oil amount adjustment method according to embodiments of the present invention.
Fig. 3 is the schematic diagram of fuel oil supply system according to embodiments of the present invention.
Fig. 4 is the schematic diagram of oil pump according to embodiments of the present invention.
Fig. 5 is another schematic diagram of oil pump according to embodiments of the present invention.
Description of reference numerals：
10- fuel tanks,
The fuel-displaced main roads of 111-, 112- oil return branch roads, 113- first flow sensors, 114- cleaners,
12- fuel pumps, 121- pump cores, 122- pump covers, 13- inlet manifold, 14- controllers,
15- fuel pump governors, 151- signal acquisition modules, 152- signal processing modules, 153- signal output modules, 154-
Circuit board, 155- protective covers, 156- air-vents, 157- sealing rings, 158- buckles, 159- plug connectors, 1591- binding posts,
16- oil pressure regulators, 161- second flow sensors,
200- oil pumps.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or dark
Show relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", the feature of " second " are defined
Can express or implicitly include one or more this feature.In describing the invention, " multiple " are meant that two
Individual or two or more, unless otherwise expressly limited specifically.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Being to be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, can be with
Above-mentioned term concrete meaning in the present invention is understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score
The first and second feature directly contacts can be included, it is also possible to be not directly contact including the first and second features but by it
Between other characterisation contact.And, fisrt feature second feature " on ", " top " and " above " it is special including first
Levy directly over second feature and oblique upper, or fisrt feature level height is merely representative of higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " below ", or be merely representative of directly over second feature and oblique upper including fisrt feature
Fisrt feature level height is less than second feature.
The control method of vehicle pump oil amount according to embodiments of the present invention is described below with reference to Fig. 1-2.
As shown in figure 1, vehicle pump oil amount adjustment method according to embodiments of the present invention comprises the steps：
S1 theoretical fuel demand amount letter is calculated according to current air- distributor pressure signal and current fuel injection pulsewidth signal)
Number.
Specifically, current air- distributor pressure signal can be collected by the pressure sensor being located in inlet manifold.
Current fuel injection pulsewidth signal refers to fuel injection pulse width, and fuel injection pulse width is that engine car running computer control fuel injector sprays every time
The time span of oil, fuel injection pulse signal change, engine controller with the different of engine speed, load and air inflow
Database being calculated or being inquired about according to these indexs and draws specific fuel injection pulsewidth numerical value, general fuel injection pulsewidth scope is in 1.5ms
To between 2.9ms.There is following relation in above-mentioned parameter：Current air- distributor pressure is bigger, and theoretical fuel demand amount is bigger；Currently
Fuel injection pulsewidth is bigger, and theoretical fuel demand amount is bigger.
Wherein, theoretical fuel demand amount signal is calculated in the following way：V=f (X, Y)=X+aY+k.V is
Magnitude of voltage corresponding to theoretical fuel demand amount signal, X are the corresponding magnitude of voltage of current manifold pressure signal, and Y is current oil spout
The corresponding magnitude of voltage of pulse width signal, a are the correction factor related to injector characteristics, and k is the summation of other corrections.Thus,
Calculating is modified to theoretical fuel demand amount using current fuel injection pulsewidth signal as major consideration, so as to get fuel oil need
The amount of asking is more accurately, rationally.
S2) according to theoretical fuel demand amount signal of change theory fuel demand amount and the working speed of pump core.Specifically, manage
It is voltage signal by fuel demand amount signal, corresponding theoretical fuel demand can be obtained according to theoretical fuel demand amount signal
Amount, can be calculated the working speed of pump core according to theoretical fuel demand amount signal.Theoretical fuel demand amount is bigger, pump core
Working speed is bigger.
S3) pump core is driven to rotate for the oil in fuel tank to be delivered to flowline according to working speed.Specifically, send out to pump core
PWM (Pulse Width Modulation, the pulse width modulation) signal corresponding with working speed is sent to drive pump core to press
Rotate according to working speed, the dutycycle of the pwm signal is corresponding with the working speed of pump core, when dutycycle is zero, the work of pump core
It is zero as rotating speed, when dutycycle is 100%, pump core is worked with maximum speed.Different duty of the pump core according to pwm signal, with
Corresponding working speed is operated.
S4 the oil pump capacity signal for) gathering flowline obtains actual oil pump capacity.Specifically, arrange in the output end of flowline
To gather oil pump capacity signal, oil pump capacity signal is voltage signal to flow sensor, according to oil pump capacity signal can with to corresponding
Actual oil pump capacity.
S5) if actual oil pump capacity is consistent with theoretical fuel demand amount, the working speed of pump core is constant；If actually gone out
Oil mass is inconsistent with theoretical fuel demand amount, and theoretical fuel demand amount is modified to, continuation step S2- consistent with actual oil pump capacity
S4。
Specifically, the difference of theoretical fuel demand amount and actual oil pump capacity is in the range of the reasonable error of setting, then actual
Oil pump capacity is consistent with theoretical oil pump capacity.If the difference of theoretical fuel demand amount and actual oil pump capacity is in the reasonable error model of setting
Enclose outer, then actual oil pump capacity is inconsistent with theoretical oil pump capacity.In the case where actual oil pump capacity is inconsistent with theoretical oil pump capacity, such as
More than or less than theoretical fuel demand amount, then revised theory fuel demand amount signal, makes revised theory to fruit border oil pump capacity
Fuel demand amount is consistent with actual oil pump capacity, is then recalculated according to revised theoretical fuel demand amount signal and obtains pump core
Working speed, drive pump core work by this working speed.It also will be understood that into if actual oil pump capacity is needed more than theoretical fuel oil
The amount of asking, then increase the working speed of pump core, if actual oil pump capacity is less than theoretical fuel demand amount, the work for reducing pump core turns
Speed.
S6) every the working cycles of at least one engine, repeat step S1-S5.Specifically, a job of engine
Circulation includes air inlet, compression, acting and exhaust process, that is, complete air inlet, compression, acting and be vented Four processes to work one
Circulation.Wherein, the current air- distributor pressure signal in step S1 is acquired in the suction stroke of a working cycles
, current pulse width signal is to gather calculated after the signals such as engine speed in suction stroke, load and air inflow.
Vehicle pump oil amount adjustment method according to embodiments of the present invention, by current manifold pressure signal and current oil spout arteries and veins
Bandwidth signals calculate theoretical fuel demand amount signal, obtain theoretical fuel demand amount and according to reason according to theoretical fuel demand amount signal
By the working speed of fuel demand amount signal of change pump core, and then pump core is driven to discuss fuel demand amount output fuel oil according to reason, afterwards
By the actual oil pump capacity revised theory fuel demand amount signal for contrasting theoretical fuel demand amount and flowline output end, Jin Erxiu
The just working speed of pump core, and then make the pump oil amount of pump core closer to actual demand amount, make fuel feeding more accurate, economical.By
This, not only avoid pump core in full-load operation state, enhance reliability and the life-span of pump core, and reduce flowline
Oil pressure resistance, make engine operate steadily.
In one embodiment, in step S6, every an engine operational cycle, repeat step S1-S5.At each
Current air- distributor pressure signal and fuel injection pulsewidth signal is resurveyed or calculated in the working cycles of engine, pressed again
Pump oil amount is adjusted according to step S1-S5, the pump oil for realizing each working cycles is uniform, make engine operate steadily, reliable.
In the illustrated example shown in fig. 2, also comprise the steps between step S1 and S2：
S11 the fuel pressure signal of flowline) is gathered, judges actual fuel pressure whether in normal fuel pressure scope
It is interior.Specifically, the pressure sensor for arranging on flowline can gather fuel pressure signal.Specifically, normal fuel pressure scope
The setting value of engine flowline, the setting value is pre-stored in system, it is to be collected to after actual fuel pressure with actual fuel oil
Pressure is contrasted.
S12) if actual fuel pressure drives the part oil of flowline to let out oil return box more than maximum normal fuel pressure,
Continue step S2 afterwards.
S13) if actual fuel pressure is fired according to actual fuel pressure revised theory less than minimum normal fuel pressure
Oily demand signal, continues step S2 afterwards.If actual fuel pressure may make theoretical combustion less than minimum normal fuel pressure
Oily demand signal has deviation, and needs are modified to theoretical fuel demand amount signal, then according to revised theoretical fuel oil
The working speed of demand signal of change pump core.
S14) if actual fuel pressure is in the range of normal fuel pressure, continue step S2.
Thus, the fuel pressure of flowline is detected, and pump oil amount is increased or by flowline according to testing result
Part oil let out oil return box, not only ensure that the normal of flowline oil pressure, and auxiliary adjustment pump oil amount, further increase
The accuracy of pump oil.
Preferably, if continuous three actual fuel pressures are above maximum normal fuel pressure or are below minimum normal
Fuel pressure, drives warning device to report to the police.Specifically, in step s 11, by actual fuel pressure and normal fuel pressure scope
After relatively, if actual fuel pressure remembers 0 in normal range (NR), if in actual fuel pressure no longer normally-pressured neighbor
Then remember 1, if continuous three notes 1, drive alarm signal to report to the police.Thus, hypertonia or pipeline is caused to be let out in pipeline blockage
Leakage cause hypotony in the case of, can and alarm, effectively reduce potential safety hazard.
Advantageously, the collection point of oil pump capacity signal is one end of neighbouring pump core on flowline.Oil is pumped out from fuel tank Jing pump cores
Afterwards, flowline is flowed into, oil is worn off during flowing on flowline, wherein on flowline on one end of neighbouring pump core
Loss of oil volume is less, closer to actual demand amount, therefore the collection point of oil pump capacity signal is located at this, makes collection result more accurate
Really, enhance the degree of accuracy of pump fuel-flow control.
The invention allows for a kind of fuel oil supply system using above-mentioned vehicle pump oil amount adjustment method.
As shown in figure 3, the fuel supply system of the above-mentioned vehicle pump oil amount adjustment method of employing according to embodiments of the present invention
System includes：Fuel tank 10, flowline, fuel pump 12, inlet manifold 13, controller 14 and fuel pump governor 15.Set on flowline
Have for gathering the first flow sensor 113 of oil pump capacity signal；Fuel pump 12 have pump core 121, one end of fuel pump 12 with
Fuel tank 10 connects and the other end of fuel pump 12 is connected with one end of flowline, and the oil in fuel tank 10 is input to flowline；
Inlet manifold 13 is connected with the other end of flowline；Fuel pump governor 15 and pump core 121, controller 14 and first flow sensing
Device 113 is electrically connected.
Wherein, fuel pump governor 15 includes signal acquisition module 151, signal processing module 152, and signal output module
153, signal processing module 152 is electrically connected with signal acquisition module 151, and signal output module 153 is electric with signal processing module 152
Connection, signal acquisition module 151 are used for current air- distributor pressure signal and the current fuel injection pulsewidth that acquisition controller 14 sends
The oil pump capacity signal that signal and first flow sensor 113 send, signal processing module 152 is for according to current inlet manifold
Pressure signal and current fuel injection pulsewidth signal calculate theoretical fuel demand amount signal, and according to fuel demand amount signal of change pump core
121 working speed and when theoretical fuel demand amount and actual oil pump capacity are inconsistent, according to correction formula V=f (X, Y)=
X+aY+k, V are the magnitude of voltage corresponding to theoretical fuel demand amount signal, and X is the corresponding magnitude of voltage of current manifold pressure signal, Y
For the corresponding magnitude of voltage of current fuel injection pulsewidth signal, a is the correction factor related to injector characteristics, and k is other corrections
Summation, now chooses suitable a values theoretical fuel demand amount is modified to, signal output module consistent with actual oil pump capacity
153 for being sent to pump core 121 by working speed signal.
Fuel oil supply system according to embodiments of the present invention, by controller 14 gather current air- distributor pressure signal and
Current fuel injection pulse signal simultaneously sends above-mentioned signal to fuel pump governor 15, the signal acquisition module 151 of fuel pump governor 15
Gather above-mentioned signal, the signal processing module 152 of fuel pump governor 15 is by above-mentioned signal of change theory fuel demand amount, and root
The working speed of pump core 121 is calculated according to theoretical fuel demand amount, working speed signal is sent to by signal output module 153 afterwards
Pump core 121.Oil in fuel tank 10 is pumped out to flowline by pump core 121 from fuel tank 10, and Jing flowlines are delivered to engine
Inlet manifold 13.The oil pump capacity signal on the collection flowline of first flow sensor 113 on flowline is further actually gone out
Oil pump capacity signal is sent to fuel pump governor 15, the signals collecting mould of fuel pump governor 15 by oil mass, first flow sensor 113
Block 151 gathers oil pump capacity signal, and actual oil pump capacity is contrasted with theoretical fuel demand amount, is managed according to comparing result amendment
By fuel demand amount signal, and then the working speed of pump core is recalculated, the working speed signal for obtaining will be recalculated and sent
To pump core 121 driving pump core 121 according to revised working speed pump oil.
Fuel feeding can be made more accurate, economical according to the fuel demand fuel feeding of car load using above-mentioned fuel oil supply system.
In one embodiment of fuel oil supply system of the present invention, flowline includes fuel-displaced main road 111 and oil return branch road
112, fuel-displaced main road 111 connects inlet manifold 13 and fuel pump 12, and oil return branch road 112 is drawn from fuel-displaced main road 111 and and fuel tank
10 connections；Fuel oil supply system also includes oil pressure regulator 16, and oil pressure regulator 16 is located on oil return branch road 112, and oil pressure is adjusted
Section device 16 is connected with fuel pump governor 15.
Wherein, oil pressure regulator 16 gathers the fuel pressure signal of flowline, and fuel pressure signal is sent oil-feed pump
Adjuster 15, signal acquisition module 151 collection fuel pressure signal, signal processing module 152 compare actual fuel pressure with just
Normal fuel pressure, if actual fuel pressure is more than maximum normal fuel pressure, signal output module 153 is to oil pressure regulator
16 send signal, to control the unlatching of oil return branch road 112；If actual fuel pressure is believed less than minimum normal fuel pressure
Number processing module 152 is chosen suitable k values to be modified theoretical fuel demand amount.
Thus, oil pressure regulator 16 detects the pressure of flowline, and fuel pressure signal is sent to fuel pump governor 15
Signal acquisition module 151, signal processing module 152 judges actual fuel pressure whether in the range of normal fuel pressure, oil
Pump control mechanism 15 controls the amendment of the opening or control fuel demand amount signal of oil return branch road 112 according to judged result.Using
Aforesaid way, realizes the monitoring to flowline oil pressure, the oil pressure of the flowline for effectively adjusting, and further pump oil amount is carried out
Adjust, so that oil pressure and pump oil amount are rationally, enhance the fuel feeding reliability of fuel oil supply system.
Preferably, signal processing module 152 judges whether the actual fuel pressure of the flowline of continuous three times is normal, continuously
Three times it is high or it is continuous three times it is low can just report to the police, signal output module 153 be connected with controller 14 with to controller 14 send report to the police
Signal.Thus, in the case where the actual fuel pressure of flowline is too high or too low, instant alarming effectively reduces safety hidden
Suffer from.
Advantageously, fuel-displaced main road 111 is provided with cleaner 114, and cleaner 114 is located at Jing oil returns on fuel-displaced main road 111
In branch after the shunting of road 112, first flow sensor 113 is located on cleaner 114, to gather oil pump capacity signal.Specifically,
The oil pump capacity of the filtered device of 113 detection stream of the first flow sensor 114 oil pump capacity signal for collecting is sent to oil pump is adjusted
Section device 15.Thus, the oil pump capacity in branch of the fuel-displaced main road 111 Jing after the shunting of oil return branch road 112 is detected, by the oil pump capacity signal
Compare with theoretical fuel demand amount signal, according to comparative result theory fuel demand amount signal.Collected using said structure
Oil pump capacity controls fuel supply volume more accurate closer to actual oil pump capacity.
Preferably, oil pressure regulator 16 is provided with for gathering the second flow sensor 161 of recirculating oil quantity signal, second
Quantity sensor 161 is electrically connected with fuel pump governor 15.Thus, when oil fills fuel tank 10, the record of fuel pump governor 15 fills state,
Fuel pump governor 15 gathers the recirculating oil quantity of the oil pump capacity signal and second flow sensor 161 of first flow sensor 113 afterwards
Signal, according to the output total amount of above-mentioned signal of change oil, oil mass when filling deducts output total amount and has just obtained current oil mass.
Using said structure, operator is made to learn immediately the current oil mass of fuel tank 10, it is ensured that driving safety.
The invention allows for a kind of fuel pump governor 15.
Fuel pump governor 15 according to embodiments of the present invention includes：Signal acquisition module 151, signal processing module 152 with
And signal output module 153, signal acquisition module 151 is used to gather current air- distributor pressure signal and current fuel injection pulsewidth is believed
Number and the oil pump capacity signal that sends of first flow sensor 113；Signal processing module 152 is electrically connected with signal acquisition module 151
Connect, signal processing module 152 is for according to current air- distributor pressure signal and the theoretical fuel oil of current fuel injection pulsewidth signal calculating
Demand signal, and the working speed according to fuel demand amount signal of change pump core 121 and in theoretical fuel demand amount and reality
When border oil pump capacity is inconsistent, according to correction formula V=f (X, Y)=X+aY+k, V is corresponding to theoretical fuel demand amount signal
Magnitude of voltage, X be the corresponding magnitude of voltage of current manifold pressure signal, Y be the corresponding magnitude of voltage of current fuel injection pulsewidth signal, a be with
The related correction factor of injector characteristics, k is the summation of other corrections, now chooses suitable a values to fire the theory
Oily demand is modified to consistent with actual oil pump capacity；Signal output module 153 is electrically connected with signal processing module 152, and signal is defeated
Go out module 153 for working speed signal is sent to pump core 121.
Fuel pump governor 15 according to embodiments of the present invention, can adjust fuel delivery according to the fuel demand of car load, make fuel feeding
It is more accurate, economical.
The invention allows for a kind of oil pump 200.
Oil pump 200 according to embodiments of the present invention includes：Fuel pump 12；And above-mentioned fuel pump governor 15, oil pump regulation
Device 15 includes circuit board 154 and protective cover 155, and circuit board 154 is provided with signal acquisition module 151, signal processing module 152
And signal output module 153, signal processing module 152 electrically connected with signal acquisition module 151, signal output module 153 with
Signal processing module 152 is electrically connected, as shown in figure 4, one end of protective cover 155 is pivotally connected with fuel pump 12, protective cover 155
The other end is connected by buckle 158 with fuel pump 12, and protective cover 155 limits guard space, guard space position with fuel pump 12
Outside fuel pump 12, circuit board 154 is located in guard space.
Specifically, fuel pump governor 15 is provided with five signal connection ends, respectively power connector end, connection end, letter
Number collection terminal, the first pump core signal output part and the second pump core signal output part, wherein the output of the first pump core signal output part
Increase working speed signal, the output of the second pump core output end reduces working speed signal.Plug connector is additionally provided with guard space
159, there is binding post 1591, for being connected with car load cable on plug connector.
Oil pump according to embodiments of the present invention not only can adjust fuel delivery according to the fuel demand of car load, make fuel feeding more smart
Really, it is economical；And fuel pump governor 15 is integrated with fuel pump 12, circuit board 154 is located in guard space, it is to avoid combustion
Pollution of the oil that oil pump 12 spills to circuit board 154 and other annexes of fuel pump governor 15.
In one embodiment, fuel pump governor 15 is located on the pump cover 122 of fuel pump 12.Those of ordinary skill in the art can
To understand, fuel pump governor 15 can be integrated in any suitable location of fuel pump 12, be not limited to pump cover 122.But oil pump is adjusted
Device 15 is arranged on pump cover 122 connection for being easy to fuel pump governor 15 and fuel pump 12 and controller 14, and compact conformation is reasonable.
As shown in figure 4, in one embodiment, protective cover 155 is provided with air-vent 156, air-vent 156 and guard space phase
Connection.Thus, on protective cover 155, the radiating of circuit board 154 is easy in the setting of air-vent 156.
Preferably, as shown in figure 5, the lower end of protective cover 155 has sealing ring 157, stopping for sealing ring 157 is against fuel pump
On 12.Thus, enhance the sealing of guard space, prevent water oil enter circuit board 154, it is ensured that fuel pump governor 15 it is normal
Work.
Other of fuel pump governor 15 according to embodiments of the present invention constitute such as cable etc. and operation for ability
All it is known for the those of ordinary skill of domain, I will not elaborate.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
" example ", " specific example ", or the description of " some examples " etc. mean specific features, the knot described with reference to the embodiment or example
Structure, material or feature are contained at least one embodiment or example of the present invention.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or spy
Point can be combined in one or more any embodiment or example in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
These embodiments can be carried out with various changes, modification, replacement and modification in the case of the principle and objective that depart from the present invention, this
The scope of invention is limited by claim and its equivalent.
Claims (10)
1. a kind of vehicle pump oil amount adjustment method, it is characterised in that comprise the steps：
S1 theoretical fuel demand amount signal is calculated according to current air- distributor pressure signal and current fuel injection pulsewidth signal)；
S2) according to the theoretical fuel demand amount signal of change theory fuel demand amount and the working speed of pump core；
S3) pump core is driven to rotate for the oil in fuel tank to be delivered to flowline according to the working speed；
S4 the oil pump capacity signal for) gathering flowline obtains actual oil pump capacity；
S5) if the actual oil pump capacity is consistent with the theoretical fuel demand amount, the working speed of pump core is constant；If institute
State actual oil pump capacity inconsistent with the theoretical fuel demand amount, the theoretical fuel demand amount is modified to and actual oil pump capacity
Unanimously, continue step S2-S4；
S6) every the working cycles of at least one engine, repeat step S1-S5.
2. vehicle pump oil amount adjustment method according to claim 1, it is characterised in that also include between step S1 and S2 as
Lower step：
S11 the fuel pressure signal of flowline) is gathered, judges actual fuel pressure whether in the range of normal fuel pressure；
S12) if actual fuel pressure is driven the part oil of flowline to let out oil return box, continued more than maximum normal fuel pressure
Step S2；
S13) if actual fuel pressure is less than minimum normal fuel pressure, according to actual fuel pressure revised theory fuel oil need
The amount of asking signal, continues step S2；
S14) if actual fuel pressure is in the range of normal fuel pressure, continue step S2.
3. vehicle pump oil amount adjustment method according to claim 2, it is characterised in that if continuous three times are above maximum
Normal fuel pressure is below minimum normal fuel pressure, drives warning device to report to the police.
4. vehicle pump oil amount adjustment method according to claim 1, it is characterised in that the collection point of the oil pump capacity signal
For one end of neighbouring pump core on flowline.
5. a kind of fuel oil supply system of the vehicle pump oil amount adjustment method using according to any one of claim 1-4,
Characterized in that, including：
Fuel tank；
Flowline, the flowline are provided with for gathering the first flow sensor of oil pump capacity signal；
Fuel pump, the fuel pump have a pump core, one end of the fuel pump be connected with the fuel tank and the fuel pump it is another
One end is connected with one end of the flowline, and the oil in the fuel tank is input to flowline；
Inlet manifold, the inlet manifold are connected with the other end of the flowline；
Controller；
Fuel pump governor, the fuel pump governor are electrically connected with the pump core, the controller and the first flow sensor
Connect；
The fuel pump governor includes signal acquisition module, signal processing module and signal output module, the signal transacting
Module is electrically connected with the signal acquisition module, and the signal output module is electrically connected with the signal processing module, the letter
Number acquisition module be used to gathering the current air- distributor pressure signal that the controller sends and current fuel injection pulsewidth signal and
The oil pump capacity signal that first flow sensor sends, the signal processing module for according to current air- distributor pressure signal and
Current fuel injection pulsewidth signal calculates theoretical fuel demand amount signal, and according to the work of theoretical fuel demand amount signal of change pump core
Rotating speed and when theoretical fuel demand amount and actual oil pump capacity are inconsistent, according to correction formula V=f (X, Y)=X+aY+k, V
Magnitude of voltage corresponding to theoretical fuel demand amount signal, X are the corresponding magnitude of voltage of current manifold pressure signal, and Y is current spray
The corresponding magnitude of voltage of oily pulse width signal, a is the correction factor related to injector characteristics, and k is the summation of other corrections, now
It is consistent with actual oil pump capacity so that the theoretical fuel demand amount to be modified to choose suitable a values, and the signal output module is used
In working speed signal is sent to pump core.
6. fuel oil supply system according to claim 5, it is characterised in that the flowline includes fuel-displaced main road and returns
Oily branch road, the fuel-displaced main road connect the inlet manifold and the fuel pump, and the oil return branch road draws from the fuel-displaced main road
Go out and connect with fuel tank；
The fuel oil supply system also includes oil pressure regulator, and the oil pressure regulator is located on the oil return branch road, and described
Oil pressure regulator is connected with the fuel pump governor；
The oil pressure regulator gathers the fuel pressure signal of the flowline, and the fuel pressure signal is sent to described
Fuel pump governor, the signal acquisition module gather the fuel pressure signal, the signal processing module reality
Fuel pressure and normal fuel pressure scope, if the actual fuel pressure is more than maximum normal fuel pressure, the letter
Number output module sends signal to the oil pressure regulator, to control the unlatching of oil return branch road；If the actual fuel pressure
Less than minimum normal fuel pressure, then the signal processing module is chosen suitable k values to repair theoretical fuel demand amount
Just.
7. fuel oil supply system according to claim 6, it is characterised in that the signal processing module judges continuous three times
The actual fuel pressure of the flowline whether be above maximum normal fuel pressure or be below minimum normal fuel pressure,
The signal output module is connected to send alarm signal to the controller with the controller.
8. fuel oil supply system according to claim 7, it is characterised in that the fuel-displaced main road is provided with cleaner, institute
State in the branch after cleaner is located on the fuel-displaced main road oil return branch road shunting described in, the first flow sensor is located at
On the cleaner, to gather the oil pump capacity signal.
9. a kind of fuel pump governor, it is characterised in that include：
Signal acquisition module, the signal acquisition module are used to gather current air- distributor pressure signal and current fuel injection pulsewidth letter
Number and the oil pump capacity signal that sends of first flow sensor；
Signal processing module, the signal processing module are electrically connected with the signal acquisition module, and the signal processing module is used
In calculating theoretical fuel demand amount signal according to current air- distributor pressure signal and current fuel injection pulsewidth signal, and according to fuel oil
The working speed of demand signal of change pump core and when theoretical fuel demand amount and actual oil pump capacity are inconsistent, according to amendment
Formula V=f (X, Y)=X+aY+k, V are the magnitude of voltage corresponding to theoretical fuel demand amount signal, and X is current manifold pressure signal
Corresponding magnitude of voltage, Y are the corresponding magnitude of voltage of current fuel injection pulsewidth signal, and a is the correction factor related to injector characteristics, k
For the summation of other corrections, now choose suitable a values to be modified to and actual oil pump capacity the theoretical fuel demand amount
Unanimously；And
Signal output module, the signal output module are electrically connected with the signal processing module, and the signal output module is used
In working speed signal is sent to pump core.
10. a kind of oil pump, it is characterised in that include：
Fuel pump；And
Fuel pump governor as claimed in claim 9, the fuel pump governor include circuit board and protective cover, the circuit board
It is provided with the signal acquisition module, the signal processing module and the signal output module, one end of the protective cover
It is pivotally connected with the fuel pump, the other end of the protective cover and the fuel pump clamping, the protective cover and the fuel oil
Pump limits guard space, and the guard space is located at outside the fuel pump, and the circuit board is located in the guard space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410764083.1A CN104832293B (en) | 2014-12-11 | 2014-12-11 | Vehicle pump oil amount adjustment method, fuel oil supply system, fuel pump governor and oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410764083.1A CN104832293B (en) | 2014-12-11 | 2014-12-11 | Vehicle pump oil amount adjustment method, fuel oil supply system, fuel pump governor and oil pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104832293A CN104832293A (en) | 2015-08-12 |
| CN104832293B true CN104832293B (en) | 2017-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410764083.1A Expired - Fee Related CN104832293B (en) | 2014-12-11 | 2014-12-11 | Vehicle pump oil amount adjustment method, fuel oil supply system, fuel pump governor and oil pump |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110388281B (en) * | 2019-05-23 | 2023-05-12 | 上海齐耀动力技术有限公司 | Fuel oil supply system and method for hot air engine |
| CN114595531B (en) * | 2022-03-11 | 2022-10-14 | 武汉雄韬氢雄燃料电池科技有限公司 | Air inlet manifold design method based on double-stack flow distribution consistency |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3060266B2 (en) * | 1992-11-09 | 2000-07-10 | 株式会社ユニシアジェックス | Engine fuel supply |
| CN100447393C (en) * | 2006-06-02 | 2008-12-31 | 北京理工大学 | Electrocontrolled high-pressure common rail experimental rakc |
| CN202867009U (en) * | 2012-07-31 | 2013-04-10 | 比亚迪股份有限公司 | Fuel pump controller |
| CN102943714A (en) * | 2012-10-29 | 2013-02-27 | 奇瑞汽车股份有限公司 | Automobile fuel pump control method |
| CN104074648B (en) * | 2013-03-28 | 2017-11-17 | 比亚迪股份有限公司 | Fuel delivery control method and fuel oil supply system for the engine of automobile |
| CN203756349U (en) * | 2013-10-28 | 2014-08-06 | 德尔福电子(苏州)有限公司 | Control system for engine oil pump |
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Address after: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee after: Beijing baowo Automobile Co.,Ltd. Address before: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee before: Beijing treasure Car Co.,Ltd. |
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