CN108204285A - The more curve power match energy-saving control systems of hydraulic construction machine and method - Google Patents
The more curve power match energy-saving control systems of hydraulic construction machine and method Download PDFInfo
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- CN108204285A CN108204285A CN201711477911.3A CN201711477911A CN108204285A CN 108204285 A CN108204285 A CN 108204285A CN 201711477911 A CN201711477911 A CN 201711477911A CN 108204285 A CN108204285 A CN 108204285A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/04—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/18—Control of the engine output torque
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Operation Control Of Excavators (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
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Abstract
The present invention discloses a kind of more curve power match energy-saving control methods of hydraulic construction machine, includes the following steps：S1, engine loading operating mode, engine operation range and external characteristic power torque curve, the matching relationship of speed change rate are set, S2, the operating mode that step S1 is set, gear and external characteristic power torque curve, the matching relationship of speed change rate, relevant parameter and main pump running parameter an external controller is written；S3, external controller obtain control signal, S4, and external controller carries out calculation processing, S5, external controller control engine controller and electric proportional control valve.The present invention designs multigroup external characteristic power torque curve and speed change rate value is matched from different load behaviors, it realizes electric-control diesel engine and exports more curve power torques, it is matched in time with Hydraulic Main pump absorbed power, capacity usage ratio is improved, reduces the unit fuel consumption rate of hydraulic construction machine complete machine.
Description
Technical field
The present invention relates to hydraulic construction machine technical fields, and in particular to a kind of more curve power match of hydraulic construction machine
Energy-saving control system and method.
Background technology
The main manufacturer of hydraulic construction machine is adopted using an external characteristic curve figure of diesel engine acquiescence at present
External characteristic power curve performance and fixed speed change rate with acquiescence carry out power with the absorbed power of hydraulic pressure main pump maximum
Match, to meet hydraulic construction machine equipment complete machine maximum operation ability.But during practice of construction, hydraulic construction machine equipment
The various operating modes such as heavy duty, economic, underloading are often had, during for economic, underloading work operating mode, due to suction required for hydraulic system
The power of receipts can be reduced, and engine output will be greater than the required absorbed power of hydraulic pump at this time, can cause energy dissipation.
Patent document application No. is 201310547845.8 discloses a kind of multi-operating points diesel engine and its control
Method is passed by the signal that power detecting unit monitors the power output of diesel engine in real time, the power demand of load changes
ECU processing is given, the fuel oil that ECU determines fuel delivery cell operation quantity according to Load Demand and each works supplies
Cell operation efficiency is given, and is transmitted the signal at the multiple fuel delivery unit, to interrupt or restore the multiple combustion
The work of oily feed unit.The diesel engine is to adjust engine inner combustion chamber according to the signal of power detecting unit to spray into bavin
The amount of oil, with the application and differing.
Invention content
The main object of the present invention is to provide a kind of more curve power match energy-saving control systems of hydraulic construction machine and side
Method, it is intended to solve the problems, such as that existing engine can cause consumption using one group of characteristic power torque curve.
To achieve the above object, the present invention proposes a kind of more curve power match energy-saving control systems of hydraulic construction machine,
Including：
External controller, equipped with a plurality of external characteristic power torque curve and multigroup speed change rate；
Engine controller connects external controller and engine, for obtaining main pump load behavior, and feeds back to institute
State external controller；
Supervisory instrument display, for carrying out throttle calibration, operating mode setting and selection, the external characteristic power of engine
Torque curve is set and selection, speed change rate setting and selection；
Electric proportional control valve for the external characteristic power torque curve and speed change rate selected according to external controller, passes through
Adjustment period controls electric current, and then controls the discharge capacity of the main pump.
The present invention also proposes a kind of more curve power match energy-saving control methods of hydraulic construction machine, which is characterized in that packet
Include following steps：
S1, the matching of setting engine loading operating mode, engine operation range and external characteristic power torque curve, speed change rate
Relationship, including：
S11, according to engine loading size, tetra- kinds of setting heavy duty H, economic S, underloading L, emergent B operating modes；
S12 according to the intrinsic maximum external characteristic power torque curve A0 curves of engine, sets five external characteristic powers to turn round
Square curve：A1 curves, A2 curves, A3 curves, A4 curves, A5 curves, the A1 curves, A2 curves, A3 curves, A4 curves, A5
Curve is in the power and torque of the corresponding engine of a certain rotating speed, the corresponding power of same rotating speed and torque respectively in A0 curves
100%, 95%, 90%, 85%, 80%；
S13 according to the speed change rate B0=5% of engine default setting, sets five groups of speed change rates：B1, B2, B3, B4, B5,
B1=8%, B2=10%, B3=15%, B4=18%, B5=20%；
S14 is set under each operating mode, each engine operation range, with corresponding external characteristic power torque curve and
The matching relationship of speed change rate is：
In heavily loaded H patterns, 9~10 grades of 1 curves of corresponding A and B5 speed change rates, 5~8 grades of 2 curves of corresponding A and B4 speed change rates,
1~5 grade of 3 curve of corresponding A and B3 speed change rates；
In economic S mode, 8~9 grades of 2 curves of corresponding A and B5 speed change rates, 5~7 grades of 3 curves of corresponding A and B4 speed change rates, 1
~5 grades of 3 curves of corresponding A and B3 speed change rates；
When being lightly loaded L mode, 7~8 grades of 5 curves of corresponding A and B3 speed change rates, 4~6 grades of 4 curves of corresponding A and B2 speed change rates, 1
~4 grades of 5 curves of corresponding A and B0 speed change rates；
In contingency mode, 1~10 grade of all 5 curve of corresponding A and B1 speed change rates；
S2, the operating mode that step S1 is set, gear and external characteristic power torque curve, speed change rate matching relationship,
An external controller is written in the running parameter of relevant parameter and main pump, and the running parameter of the main pump includes output pressure P, discharge capacity
Q and the one-to-one relationship for controlling the control electric current i of the electric proportional control valve of discharge capacity q sizes；
S3, external controller obtain control signal, including：
S31 makes the external controller connection engine controller, is obtained by engine controller and connect with engine
Load control input signal, the current output pressure P of current rotating speed n, main pump including engineb；
S32, one supervisory instrument display of setting are connected to the input terminal of the external controller, pass through the supervisory instrument
Display carries out operating mode selection, the setting of external characteristic power torque curve and selection, speed change rate setting and selection；
S4, external controller carry out calculation processing：
External controller is according to collected control input signal in the supplemental characteristic and step S3 being had been written into step S2
Data calculate the corresponding matched power of load and torque and speed change rate, and output power torque command and speed change rate setting
It instructs to engine controller；
S5, external controller control engine controller and electric proportional control valve, including：
S51, engine controller export corresponding power torque and rotating speed, lead to according to the power torque command received
It crosses shaft coupling to connect with main pump, imparts power to main pump；
S52, engine controller set instruction according to the speed change rate received, and the speed governing of engine is adjusted by governor
Rate makes engine ensure that engine exports corresponding power torque curve and metastable turn in time in the speed change rate of setting
Speed；
S53, external controller connect the main pump by an electric proportional control valve, and external controller exports corresponding instruction
The control electric current i of electric proportional control valve is adjusted, by the way that electric current i is controlled to change the discharge capacity q of main pump, realizes output power.
Further, throttle parameter calibration can be carried out by the supervisory instrument display.
Further, the running parameter of the main pump further includes fuel consumption and accelerator open degree value.
Further, in step S51, the engine controller is according to the power torque command received, with engine
Controller communication connects, and selects accelerator open degree parameter, calculates the injection time that engine needs, thus controls the oil spout of engine
Amount, and then the rotating speed for adjusting engine to need is run.
Compared with prior art, the advantageous effect of technical solution of the present invention：
First, one external controller of present invention setting connects engine controller, is inputted in external controller memory storage multigroup
External characteristic power torque curve and multigroup speed change rate value, and a supervisory instrument display is connected in the input terminal of external controller,
User is allow to select different external characteristic power torque curves by supervisory instrument display, thus come and different load works
Condition is matched, it is also an option that different speed change rate values, to ensure the power torque of output and stabilization of speed.So that user can
With according to different load behaviors, control engine is avoided with corresponding external characteristic power torque curve output power torque
Engineering machinery engine when underloading or zero load are when operating modes is worked with peak load the problem of energy dissipation being caused excessively high, this hair
It is bright to realize that electric-control diesel engine exports more curve power torques and Hydraulic Main pump absorbed power matches in time, improve energy
Utilization rate is measured, reduces the unit fuel consumption rate of hydraulic construction machine complete machine.
2nd, the present invention also sets up electric proportional control valve connection external controller and main pump, electric proportional control valve pass through outer
It connects controller and changes its control current flow, so as to change output hydraulic pressure, pumpage is allowed to generate variation, by different characteristic power
Torque curve output power and torque thus according to the power matching scheme of prior optimization design, pass through the external controller
The electric current of engine controller and electric proportional control valve is controlled respectively, to realize energy saving optimizing, is equivalent to a same fashionable dress of equipment
There is the engine of different capacity and employ two sets of independent throttle control systems：It is a set of energy saving for normal power matching
Control, another set of be ready for use in emergency circumstances uses, after complete machine electric-control system enters standby mode by instrument mandate, electric ratio
Control valve obtains a stable electric current by a build-out resistor, and the rotating speed of engine is carried out by emergent throttle control system
It controls, the engineering machinery such as removal of engine controller, excavator can still carry out common work operation at this time, be carried for repair
The measure of emergent management is supplied, the contradiction for solving producer and customer demand.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Structure according to these attached drawings obtains other attached drawings.
Fig. 1 is that the more curve power match energy-saving control methods of hydraulic construction machine that the embodiment of the present invention one proposes use
Control system block diagram.
The drawing reference numeral explanation of the present invention：
| Label | Title | Label | Title |
| 1 | Supervisory instrument display | 4 | Engine |
| 2 | External controller | 5 | Main pump |
| 3 | Engine controller | 6 | Electric proportional control valve |
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only the part of the embodiment of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining relative position relation, motion conditions under a certain particular pose (as shown in drawings) between each component etc., if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, in the present invention such as relating to the description of " first ", " second " etc. be only used for description purpose, and it is not intended that
Indicate or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Define as a result, " first ",
At least one this feature can be expressed or be implicitly included to the feature of " second ".In the description of the present invention, " multiple " contain
Justice is at least two, such as two, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " connection ", " fixation " etc. should be interpreted broadly,
For example, " fixation " can be fixedly connected or be detachably connected or integral；Can be mechanical connection or
Electrical connection；It can be directly connected, can also be indirectly connected by intermediary, can be the connection inside two elements or two
The interaction relationship of a element, unless otherwise restricted clearly.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In addition, the technical solution between each embodiment of the present invention can be combined with each other, but must be general with this field
Logical technical staff can be implemented as basis, will be understood that when the combination appearance of technical solution is conflicting or can not realize this
The combination of technical solution is not present, also not the present invention claims protection domain within.
The present invention proposes a kind of more curve Poewr control methods of hydraulic construction machine.
Fig. 1 is please referred to, the present invention sets a kind of more curve power energy-saving control systems of hydraulic construction machine first, including prison
Depending on instrument display 1, external controller 2, engine controller (ECU) 3, engine 4, main pump 5 and electric proportional control valve 6.
The engine 4 is electric-control diesel engine, and the engine controller 3 is electronics control included on engine 4
Device processed, only setting is using an external characteristic power torque curve and fixation in the electronic controller carried in current engineering machinery
Speed change rate, the rotating speed of engine and output power are adjusted by bus, in this way when hydraulic pressure main pump is required in actual work
Absorbed power be less than engine output power when, energy dissipation can be caused, therefore, the application set an external controller 2
Engine controller 3 is connected, multigroup external characteristic power torque curve and multigroup speed change rate are inputted in 2 memory storage of external controller
Value, and a supervisory instrument display 1 is connected in the input terminal of external controller 2, user is allow by supervisory instrument display 1
It selects different external characteristic power torque curves, is thus matched from different load behaviors, it is also an option that different
Speed change rate value, to ensure the power torque of output and stabilization of speed.
Hydraulic construction machine hydraulic pump controls its discharge capacity by engine driving, by the rotating speed of engine, and current perseverance
Power and variable pump hydraulic system performance is not perfect, its discharge capacity is adjusted along intrinsic characteristic curve when main pump works, always in maximum work
It is run in rate, flow and pressure, equally exists energy dissipation, therefore, the application also adds in the outer of the existing stroking mechanism of main pump
An electric proportional control valve 6 is filled, the electric proportional control valve 6 changes it by the external controller 2 and controls current flow, from
And change output hydraulic pressure, pumpage is allowed to generate variation, by different characteristic power torque curve output powers and torque.
Based on the more curve power energy-saving control systems of above-mentioned hydraulic construction machine, the present invention proposes a kind of hydraulic construction machine
More curve power energy-saving control methods, include the following steps：
S1, the matching of setting engine loading operating mode, engine operation range and external characteristic power torque curve, speed change rate
Relationship, including：
S11, in order to adapt to different hydraulic construction machine working conditions, according to engine loading size, setting heavy duty H, warp
Help tetra- kinds of S, underloading L, emergent B operating modes, so that user selects according to duty requirements；
S12, since each operating mode is in different engine, required engine power is also different, because
This devises more curve external characteristic power torque selection functions.
Specifically, it based on according to the intrinsic maximum external characteristic power torque curve A0 curves of diesel engine, sets successively
Five external characteristic power torque curves are counted：
A1 curves (A0 × 100%), A2 curves (A0 × 95%), A3 curves (A0 × 90%), A4 curves (A0 × 85%),
A5 curves (A0 × 80%),
The A1 curves, A2 curves, A3 curves, A4 curves, A5 curves the corresponding engine of a certain rotating speed power and
100%, 95%, 90%, 85%, the 80% of the corresponding power of same rotating speed and torque in torque, respectively A0 curves；It and will be with
Upper external characteristic power torque curve parameter storage is written in the external controller.
S13, due to the influence of fluctuations power output of hydraulic pressure main pump (output power=pump discharge of pump of engine speed
The rotating speed of pressure * rates of discharge=pump discharge pressure * pumpages * pumps), the reasonable setting of speed change rate influences whether hydraulic crawler excavator
Operating efficiency and Fuel Economy, general diesel engine default setting mechanical speed governors rate be 8%, due to current
For III standard diesel engine of state substantially all using high pressure common rail electric-controlled jet control system, corresponding speed is quickly, and cleverer
Living, the power torque and rotating speed of output are more stable, can normally stablize in standard setting value positive and negative 50 revs/min.
But different speed change rates can be different to the fuel efficiency of engine, therefore in order to improve fuel oil service efficiency, this
Invention develops multigroup different speed change rate value.
Specifically, according to the speed change rate B0=5% of engine default setting, five groups of speed change rates are set：B1、B2、B3、B4、
B5, and B1=8%, B2=10%, B3=15%, B4=18%, B5=20%, and multigroup different speed change rate value storages are write
Enter in the external controller.
S14, due to Pi=P × Q/ (60 η),
Wherein:Pi pumps absorbed power, i.e. Hydraulic Main pump input power, unit kW for Hydraulic Main；
P be Hydraulic Main pump output pressure, unit MPa；
Q exports total flow, unit L/min for hydraulic pressure main pump；
η pumps mechanically and hydraulically gross efficiency for Hydraulic Main, and 1 × η of η=η 2, η 1 is mechanical efficiency, and η 2 is hydraulic efficiency；
Hydraulic pressure main pump is power limitation control system, is automatically adjusted by output pressure P and exports total flow Q, and output pressure P
It is determined by load behavior, therefore hydraulic construction machine is during the work time, if load behavior generates variation, main pump output pressure
P generates variation, and main pump flow and absorbed power equally generate variation.Thus it is provided with operating mode and external characteristic power torque is bent
The correspondence of line；Again since the rotating speed of electric-control motor is mainly to control what fuel injection amount controlled according to speed change rate, speed governing
If rate height, unit distributive value is low, and if speed change rate is low, unit distributive value is high, the fuel consumption provided according to engine manufacturer
MAP distribution maps, when engine output torque meets the absorbed power of hydraulic pressure main pump, as far as possible using high speed change rate,
The low MAP distributed areas of unit fuel consumption rate are operated in, realizing reduces fuel consumption rate, accordingly, sets each operating mode
Under, each engine operation range, the matching relationship with corresponding external characteristic power torque curve and speed change rate is：
External controller is written in matching relationship by S2：
Each external characteristic power torque of step S1 engine loading pressure size value, gear number and the engines set is bent
The external controller is written in the running parameter of line parameter, the matching relationship of speed change rate value and main pump,
Wherein, the running parameter of the main pump power match is opened including output pressure P, discharge capacity q, fuel consumption g, throttle
Angle value；(output flow Q=q × n of main pump, unit L/min, n are engine speed, unit rpm)
S3：External controller obtains control signal, including：
S31 makes the external controller connection engine controller, engine is obtained in real time by engine controller
The current output pressure P of current rotating speed n, main pump；
The supervisory instrument display, is connected to the input terminal of the external controller by S32, and the supervisory instrument is shown
Device is display/input equipment, can carry out throttle calibration by the supervisory instrument display, operating mode selects, engine work
Make gear selection, the selection of external characteristic power torque curve and setting, operating mode selection；
S4, external controller carry out calculation processing：
External controller is inputted according to control collected in the match parameter data and step S3 being had been written into step S2
Signal data, the current rotating speed n in step S31 find out the corresponding matched power of load and torque, according to the work of selection
Pattern and engine operation range set corresponding speed change rate, and output power torque command and speed change rate setting instruction are to hair
Motivation controller；
Meanwhile the external controller calculates to control the control of the electric proportional control valve 6 of discharge of main pump q sizes electric
I is flowed, and exports corresponding instruction and adjusts electric proportional control valve so that electric current i to be controlled to work, thus main pump is controlled to adjust its discharge capacity；
S5, external controller control engine controller and electric proportional control valve, including：
S51, engine controller export corresponding power torque and rotating speed, lead to according to the power torque command received
It crosses shaft coupling to connect with main pump, imparts power to the main pump；
S52, engine controller set instruction according to the speed change rate received, and the speed governing of engine is adjusted by governor
Rate makes engine ensure that engine exports corresponding power torque curve and metastable turn in time in the speed change rate of setting
Speed；
S53, electric proportional control valve 6 control the main pump 5 to adjust its discharge capacity, realize the output of main pump 5 according to control electric current i
Power control.
When H S tri- operating modes of L do not work when, contingency mode B can be individually enabled, start an emergency flight control
Unit generates a stable control electric current with a fixed resistance matched, controls Hydraulic Main pump power output.
It is the more curve power match energy-conserving control technologies of the present invention below in permanent 95 company's JV150C hydraulic crawler excavators of day
Experimental test situation on product, same equipment unit oil consumption reduce 10.77% or so.
Data before JV150C efficiency consumption improvements
The oil consumption of JV150C efficiency is tested, machine number：JV150CS000163, date：2017.9.7 environment temperature：35.8℃
Data comparison after JV150C efficiency oil consumption optimization improves
The oil consumption of JV150C efficiency is tested, machine number：JV150CS000163, date：2017.9.8 environment temperature：35.8℃
By the more curve power energy-saving controls of hydraulic construction machine of the present invention it can be seen from data comparison after optimization improvement
System and its control method processed apply to excavator and carry out operation, and monobucket oil consumption ratio is obviously improved, and reduces energy loss.
The present invention is that optimizing regulation hydraulic system absorbed power can export difference with an engine according to setting is matched
Power, torque, the kinetic parameter of fuel consumption rate it is energy saving to realize；(different hydraulic powers match others technology at present
The fixed power output parameter of one engine) it is that optimizing regulation hydraulic system absorbed power is moved with engine fixation output power
Force parameter matches.
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the scope of the invention, every at this
The equivalent structure transformation made under the inventive concept of invention using description of the invention and accompanying drawing content or directly/utilization indirectly
It is included in the scope of patent protection of the present invention in other related technical areas.
Claims (5)
1. a kind of more curve power match energy-saving control systems of hydraulic construction machine, which is characterized in that including：
External controller, equipped with a plurality of external characteristic power torque curve and multigroup speed change rate；
Engine controller connects external controller and engine, for obtaining main pump load behavior, and feeds back to described outer
Connect controller；
Supervisory instrument display, for carrying out throttle calibration, operating mode setting and selection, the external characteristic power torque of engine
Curve is set and selection, speed change rate setting and selection；
Electric proportional control valve, for the external characteristic power torque curve and speed change rate selected according to external controller, by adjusting
Phase controls electric current, and then controls the discharge capacity of the main pump.
2. a kind of more curve power match energy-saving control methods of hydraulic construction machine, which is characterized in that include the following steps：
S1, setting engine loading operating mode, engine operation range and the matching of external characteristic power torque curve, speed change rate are closed
System, including：
S11, according to engine loading size, tetra- kinds of setting heavy duty H, economic S, underloading L, emergent B operating modes；
S12 according to the intrinsic maximum external characteristic power torque curve A0 curves of engine, sets five external characteristic power torques bent
Line：A1 curves, A2 curves, A3 curves, A4 curves, A5 curves, the A1 curves, A2 curves, A3 curves, A4 curves, A5 curves
In the power and torque of the corresponding engine of a certain rotating speed, the corresponding power of same rotating speed and torque respectively in A0 curves
100%th, 95%, 90%, 85%, 80%；
S13 according to the speed change rate B0=5% of engine default setting, sets five groups of speed change rates：B1, B2, B3, B4, B5, B1=
8%, B2=10%, B3=15%, B4=18%, B5=20%；
S14 is set under each operating mode, each engine operation range, with corresponding external characteristic power torque curve and speed governing
The matching relationship of rate is：
In heavily loaded H patterns, 9~10 grades of 1 curves of corresponding A and B5 speed change rates, 5~8 grades of 2 curves of corresponding A and B4 speed change rates, 1~5
Shelves 3 curve of corresponding A and B3 speed change rates；
In economic S mode, 8~9 grades of 2 curves of corresponding A and B5 speed change rates, 5~7 grades of 3 curves of corresponding A and B4 speed change rates, 1~5
Shelves 3 curve of corresponding A and B3 speed change rates；
When being lightly loaded L mode, 7~8 grades of 5 curves of corresponding A and B3 speed change rates, 4~6 grades of 4 curves of corresponding A and B2 speed change rates, 1~4
Shelves 5 curve of corresponding A and B0 speed change rates；
In contingency mode, 1~10 grade of all 5 curve of corresponding A and B1 speed change rates；
S2, the operating mode that step S1 is set, gear and external characteristic power torque curve, speed change rate matching relationship, corresponding
The running parameter of parameter and main pump is written an external controller, the running parameter of the main pump include output pressure P, discharge capacity q and
For controlling the one-to-one relationship of the control electric current i of the electric proportional control valve of discharge capacity q sizes；
S3, external controller obtain control signal, including：
S31 makes the external controller connection engine controller, is connect by engine controller acquisition with engine negative
The control input signal of load, the current output pressure P of current rotating speed n, main pump including engineb；
S32, one supervisory instrument display of setting are connected to the input terminal of the external controller, are shown by the supervisory instrument
Device carries out operating mode selection, the setting of external characteristic power torque curve and selection, speed change rate setting and selection；
S4, external controller carry out calculation processing：
External controller is according to control input signal number collected in the supplemental characteristic and step S3 being had been written into step S2
According to calculating the corresponding matched power of load and torque and speed change rate, and output power torque command and speed change rate setting refer to
It enables to engine controller；
S5, external controller control engine controller and electric proportional control valve, including：
S51, engine controller export corresponding power torque and rotating speed, pass through connection according to the power torque command received
Axis device is connect with main pump, imparts power to main pump；
S52, engine controller set instruction according to the speed change rate received, and the speed change rate of engine is adjusted by governor,
Engine is made to ensure that engine exports corresponding power torque curve and metastable rotating speed in time in the speed change rate of setting；
S53, external controller connect the main pump by an electric proportional control valve, and the corresponding instruction of external controller output is adjusted
The control electric current i of electric proportional control valve by the way that electric current i is controlled to change the discharge capacity q of main pump, realizes output power.
3. the more curve power match energy-saving control methods of hydraulic construction machine as claimed in claim 2, which is characterized in that pass through
The supervisory instrument display can carry out throttle parameter calibration.
4. the more curve power match energy-saving control methods of hydraulic construction machine as claimed in claim 2, which is characterized in that described
The running parameter of main pump further includes fuel consumption and accelerator open degree value.
5. the more curve power match energy-saving control methods of hydraulic construction machine as claimed in claim 2, which is characterized in that step
In S51, the engine controller is communicated with engine controller and is connected, selection is oily according to the power torque command received
Door aperture parameter calculates the injection time that engine needs, and thus controls the distributive value of engine, and then adjusts engine to need
The rotating speed operation wanted.
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| CN109538361A (en) * | 2018-11-30 | 2019-03-29 | 恒天九五重工有限公司 | A method of prevent engineering machinery load from generating failure when starting |
| CN109630298A (en) * | 2018-12-12 | 2019-04-16 | 三汽车制造有限公司 | Control method, control system and the engineering machinery of dynamical system |
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| CN109538361B (en) * | 2018-11-30 | 2021-04-27 | 恒天九五重工有限公司 | Method for preventing faults generated during loading and starting of engineering machinery |
| CN109538361A (en) * | 2018-11-30 | 2019-03-29 | 恒天九五重工有限公司 | A method of prevent engineering machinery load from generating failure when starting |
| CN109630298A (en) * | 2018-12-12 | 2019-04-16 | 三汽车制造有限公司 | Control method, control system and the engineering machinery of dynamical system |
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| CN110644564A (en) * | 2019-09-11 | 2020-01-03 | 徐州徐工挖掘机械有限公司 | Hydraulic excavator control system and method |
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| CN112502878B (en) * | 2020-12-21 | 2023-09-05 | 广西玉柴船电动力有限公司 | Marine engine control method and common rail system |
| CN113062397A (en) * | 2021-03-26 | 2021-07-02 | 大连理工大学 | Excavator power matching method based on power matching rule base |
| CN113062397B (en) * | 2021-03-26 | 2022-05-10 | 大连理工大学 | Power matching rule base-based power matching method for excavator |
| CN113027624A (en) * | 2021-03-31 | 2021-06-25 | 潍柴动力股份有限公司 | Engine soot control method and device |
| CN113494377A (en) * | 2021-08-17 | 2021-10-12 | 柳州柳工挖掘机有限公司 | Energy-saving control method of electric control engine and engineering machinery |
| CN113494377B (en) * | 2021-08-17 | 2022-06-28 | 柳州柳工挖掘机有限公司 | Energy-saving control method of electric control engine and engineering machinery |
| CN115199418A (en) * | 2022-07-15 | 2022-10-18 | 湖南道依茨动力有限公司 | Engineering equipment torque limiting method and system, engine and engineering equipment |
| CN115434819A (en) * | 2022-08-12 | 2022-12-06 | 中联重科股份有限公司 | Method and device for controlling power matching, electronic equipment and engineering machinery |
| CN115434819B (en) * | 2022-08-12 | 2024-04-12 | 中联重科股份有限公司 | Method and device for controlling power matching, electronic equipment and engineering machinery |
| CN116398312A (en) * | 2023-04-20 | 2023-07-07 | 广西康明斯工业动力有限公司 | Engine dynamic speed regulation control method and system based on energy-saving matching |
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