CN101302963B - Prime motor output torque balance control system - Google Patents
Prime motor output torque balance control system Download PDFInfo
- Publication number
- CN101302963B CN101302963B CN2007100685051A CN200710068505A CN101302963B CN 101302963 B CN101302963 B CN 101302963B CN 2007100685051 A CN2007100685051 A CN 2007100685051A CN 200710068505 A CN200710068505 A CN 200710068505A CN 101302963 B CN101302963 B CN 101302963B
- Authority
- CN
- China
- Prior art keywords
- pump
- assist motor
- accumulator
- way valve
- hydraulic oil
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The invention discloses a prime mover output torque equilibrium control system which comprises a hydraulic oil tank, an accumulator, a storage pump transmission connected with an output shaft of the prime mover and a power-steering motor, wherein, the output shaft of the prime mover is transmission connected with the output shaft of a main hydraulic pump; an exit of the storage pump is connected with an opening of the accumulator by a first one-way valve which allows the hydraulic oil to pass through the exit of the storage pump to the opening of the accumulator; the opening of the accumulator is connected with an entrance of the power-steering motor; the entrance of the power-steering motor is connected with the hydraulic oil tank by a second one-way valve which allows the hydraulic oil to enter the entrance of the power-steering motor from the oil tank; and the control system also comprises a torque controller which controls the storage pump and the discharge of the power-steering motor. The invention provides the prime mover output torque regulating system with simple structure, reliable performance, reduced cost and wide application range, which realizes the equilibrium control of the output torque.
Description
(1) technical field
The present invention relates to fluid transmission control and Prime mover torque control field, be applicable to the output torque balance control system of internal-combustion engine in the violent engineering machinery of load variations violent various prime mover, especially load variations and other prime mover.
(2) background technique
Some engineering machinery are in work progress, because the acute variation of load causes the output torque of its prime mover also to take place significantly to change thereupon.For example, hydraulic shovel in the course of the work, its operating load changes violent, cause its hydraulic system working pressure that acute variation also takes place, and owing to oil hydraulic pump is directly driven by diesel engine, therefore also great changes will take place to act on moment of torsion on the diesel engine output shaft, and the diesel engine load torque was also bigger when system pressure was higher, and the load torque of diesel engine was also less when system pressure was low.This situation has directly caused the generation of two kinds of consequences.First, for satisfying the proper functioning requirement of these engineering mechanical devices, even the average load power on these equipment is also little, also must select diesel engine according to the maximum load moment of torsion that may occur, cause selected diesel engine power bigger than normal, otherwise just occur the flame-out phenomenon of the frequent overload of diesel engine easily; Second, the efficient operating point of diesel engine generally is positioned at the high pulling torque zone, but because the diesel engine output torque is with the load acute variation, therefore cause diesel engine work point unstable, change back and forth between the relatively poor little moment of torsion district of the high pulling torque district of better economy and Economy has influenced the working efficiency of diesel engine.Owing to these two reasons, fuel oil is not fully utilized, cause the waste of the energy.In addition, high-power diesel engine also will cause the rising of manufacture cost.In traditional in the past design, this is the cost that must pay for the requirement of satisfying peak power under the maximum load, has therefore formed the contradiction that satisfies between maximum load power demand and manufacture cost rising and the fuel saving.
For solving above mentioned contradiction, adopt the oil electric mixed dynamic technology usually, the output torque of internal combustion engine prime movers is regulated, it is settled out.In this scheme, the diesel engine output power is except driving oil hydraulic pump, also drive a generator, perhaps the diesel engine output power all is used for driving generator, adopt rechargeable battery and super capacitor as energy-storage travelling wave tube, (be equivalent to pilot control pressure very little or be zero) is to storage battery and super capacitor charging in little load or when unloaded, (it is higher to be equivalent to pilot control pressure) is stored in super capacitor and electricity of accumulator then discharges drive motor when heavy load, drive oil hydraulic pump or oil hydraulic pump directly by the motor single driving by the motor auxiliary diesel, absorb energy from diesel engine when so just forming little load, auxiliary diesel drives oil hydraulic pump together during heavy load, thereby can control diesel engine output torque all-the-time stable near a definite value, and then control diesel engine work point all-the-time stable ground is positioned at energy-efficient district.But owing to be subjected to the restriction of technical development up till now, battery capacity and battery cell voltage are on the low side, and the life-span is also limited, and volume is bigger when being used for powerful device, cost an arm and a leg, Dui Ying power circuit complexity with it, and cost is higher.If adopt super capacitor as energy-storage travelling wave tube, though on the charging life-span far above battery, monomer whose voltage also is on the low side, also has the shortcoming bulky, that circuit is complicated, with high costs when being used for the bigger equipment of power.In addition, owing in the power transmittance process, there is the repeatedly conversion of " mechanical energy → electric energy → mechanical energy ", the total efficiency in the power transmittance process is had a greatly reduced quality.Except that time, flying wheel battery also is a kind of selection, but that this technology uses on powerful device at present that is that all right is ripe, cost also is high.
Except adopting the oil electric mixed dynamic technology, adopting the static pressure transmission and the secondary regulation technology of hydraulics also is the effective means that can effectively regulate prime motor output torque, but this structure has adopted the power transfer mode of " diesel engine → volume adjustable hydraulic pump → accumulator → variable hydraulic motor → load ", only be applicable to the oil hydraulic motor to be the equipment of drive unit, then improper for the equipment that with the oil hydraulic pump is drive unit.
(3) summary of the invention
In order to overcome existing prime mover or torque output of combustion engine regulation technology complex structure, cost height, shortcoming that Applicable scope is little, the invention provides a kind of simple in structure, reliable performance, and can reduce cost, prime mover machine output torque regulating system applied widely, realize the equilibrium control of its output torque.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of prime motor output torque balance control system, comprise hydraulic oil container, accumulator, the storage pump that is in transmission connection with original machine output shaft, assist motor, the output shaft of described original machine output shaft and Main Hydraulic Pump is in transmission connection, described accumulation of energy delivery side of pump connects the gateway of described accumulator by first one-way valve that is used to allow hydraulic oil to export to the import and export of accumulator from storage pump, the gateway of described accumulator connects the inlet of assist motor, and the inlet of described assist motor is also by being used to allow second one-way valve of the inlet of hydraulic oil from the fuel tank to the assist motor to be connected with hydraulic oil container; Described control system also comprises in order to the torque controller according to control signal control storage pump and main force's motor displacement.
As preferred a kind of scheme: the gateway of described accumulator is by being used for not having to stop hydraulic oil to connect the inlet of assist motor to second controlled one-way valve of the inlet of assist motor from the gateway of described accumulator under the condition of control signal; Described torque controller is according to the pilot pressure signal output control signal P of engineering machinery
i, in the ban the pilot force signal preset greater than setting threshold value the time, send path command signal P to second controlled one-way valve
i
As preferred another kind of scheme: setting pressure sensor on the described accumulator; Described accumulation of energy delivery side of pump is also by being used for not having to stop hydraulic oil to connect fuel tank from first controlled one-way valve that exports to fuel tank of described storage pump under the condition of control signal; Described torque controller is according to the pressure signal output control signal P of pressure transducer
c, when threshold value that pressure signal presets greater than setting, send path command signal P to first controlled one-way valve
c
Further, described first controlled one-way valve, second controlled one-way valve can be Pilot operated check valve, fluid-controlled cut-off valve or electromagnet cut off valve.
Further again, described storage pump is for becoming the storage pump of discharge capacity structure or fixed displacement structure, and described assist motor is for becoming the assist motor of discharge capacity structure or fixed displacement structure.
Further, the outlet of described accumulator connects fuel tank by relief valve.Set the maximum safe working pressure of accumulator.Relief valve can play safety effect.
Further again, first kind of drive connection of the output shaft of storage pump, assist motor, original machine output shaft, Main Hydraulic Pump is: described control system also comprises first transfer gear, second transfer gear, the central gear that is connected with original machine output shaft, the input shaft of storage pump connects first transfer gear, first transfer gear and central gear engagement, described central gear is connected with the input shaft of Main Hydraulic Pump, the output shaft of described assist motor connects second transfer gear, second transfer gear and central gear engagement.
Second kind of drive connection of the output shaft of storage pump, assist motor, original machine output shaft, Main Hydraulic Pump is: described control system also comprises transfer gear, the central gear that is connected with original machine output shaft, the input shaft of storage pump connects transfer gear, transfer gear and central gear engagement, described central gear is connected with the input shaft of Main Hydraulic Pump, the connecting with storage pump is coaxial of described assist motor.
Transfer gear can lay respectively at the both sides of central gear.
The third drive connection of the output shaft of storage pump, assist motor, original machine output shaft, Main Hydraulic Pump is: described original machine output shaft connects with the output shaft of Main Hydraulic Pump, and described assist motor, storage pump all connect with Main Hydraulic Pump is coaxial.
Perhaps, the position of assist motor, storage pump can be changed front and back; Again or: assist motor, storage pump can connect with original machine output shaft earlier, and then connect with the input shaft of Main Hydraulic Pump, and the position of assist motor, storage pump can before and after transposing; Or: assist motor connects with original machine output shaft earlier, and then connects with input shaft, the storage pump of Main Hydraulic Pump; More or: storage pump connects with original machine output shaft earlier, and then connects with input shaft, the assist motor of Main Hydraulic Pump.
The 4th kind of drive connection of the output shaft of storage pump, assist motor, original machine output shaft, Main Hydraulic Pump is: described control system also comprises transfer gear, the central gear that is connected with original machine output shaft, the input shaft of storage pump connects transfer gear, transfer gear and central gear engagement, described central gear is connected with the input shaft of Main Hydraulic Pump, the connecting with Main Hydraulic Pump is coaxial of described assist motor.
Assist motor also can connect with central gear earlier, and then connects with the input shaft of Main Hydraulic Pump.
The 5th kind of drive connection of the output shaft of storage pump, assist motor, original machine output shaft, Main Hydraulic Pump is: described control system also comprises transfer gear, the central gear that is connected with original machine output shaft, the input shaft of assist motor connects transfer gear, transfer gear and central gear engagement, described central gear is connected with the input shaft of Main Hydraulic Pump, the connecting with Main Hydraulic Pump is coaxial of described storage pump.
Storage pump also can connect with central gear earlier, and then connects with the input shaft of Main Hydraulic Pump.
Technical conceive of the present invention is: storage pump is driven by original machine output shaft by gear transmission, to described accumulator stored energy; The hydraulic pressure of storing in the described accumulator can then drive described assist motor, and assist motor drives the diesel engine output shaft by gear transmission again; The diesel engine output shaft also directly drives the hydraulic system main pump.So just can form the power transfer route of " original machine output shaft → storage pump → accumulator → assist motor → original machine output shaft → Main Hydraulic Pump → load ".Described storage pump inlet links to each other with fuel tank, and its delivery outlet then links by first one-way valve and described accumulator inlet, and first one-way valve only allows hydraulic oil to flow to accumulator from pump; Described accumulator inlet links with described variable displacement motor inlet opening again; Described variable displacement motor inlet also links by second one-way valve and fuel tank, and second one-way valve only allows hydraulic oil to flow to the variable displacement motor inlet from fuel tank.
The discharge capacity of described variable displacement pump and variable displacement motor is subjected to the control of torque controller, and torque controller is controlled described variable displacement pump and variable displacement motor discharge capacity according to pressure sensor signal, pilot control pressure signal, diesel engine speed signal and main hydraulic system pressure signal.When whole system works in little load or lower system works pressure, control described storage pump flow greater than described assist motor flow, the flow that assist motor does not absorb then enters described accumulator and stores; When whole system works in heavy load operating mode or higher system working pressure, then control described storage pump flow less than described assist motor flow, the flow of assist motor deficiency is then replenished by the hydraulic oil that stores in the described accumulator, forms the working condition that accumulator and oil hydraulic pump drive oil hydraulic motor jointly.
So just can be implemented in main hydraulic system pressure and drive Main Hydraulic Pump by described accumulator auxiliary diesel when higher, alleviate the diesel engine load torque; And when main hydraulic system pressure is low, absorb the output power of diesel engine by described accumulator and store the load of increase diesel engine.Finally, the output torque of diesel engine is tending towards equilibrium state, helps stablizing the operation point of diesel engine, for the Energy Saving Control of diesel engine provides condition.Because described storage pump and assist motor discharge capacity can be regulated, so the load torque size on the diesel engine also can regulate, and helps diesel engine work point is controlled at energy-efficient district all the time.
For guaranteeing reliable control, draw a bleed off circuit in described storage pump outlet port, by the logical fuel tank of first controlled one-way valve.The function of first controlled one-way valve is that when control signal, the hydraulic oil of described storage pump output is oil sump tank directly, realizes unloading function; When not having control signal, the hydraulic oil of described storage pump output then can not oil sump tank, can only flow into described accumulator or assist motor.In addition, to the access of described hydraulic variable motor, second controlled one-way valve can also be set in described accumulator gateway.The function of second controlled one-way valve is to allow hydraulic oil to flow to described assist motor inlet from described accumulator gateway when control signal; When not having control signal, stop hydraulic oil to flow to described assist motor from described accumulator.
Beneficial effect of the present invention mainly shows: 1, simple in structure, reliable performance; 2, can stablize the operation point of prime mover or internal-combustion engine, be applicable to the engineering machinery that load variations is violent, can make in the design of plant such as engineering machinery and adopt low-powered engine, make the efficient of motor higher, more save fuel oil, also reduced the motor cost simultaneously; 3, applied widely.
(4) description of drawings
Fig. 1 is machine construction principle figure of the present invention.
Fig. 2 is second kind of machine construction principle figure.
Fig. 3 is the third machine construction principle figure.
Fig. 4 is the 4th kind of machine construction principle figure.
Fig. 5 is the 5th kind of machine construction principle figure.
Fig. 6 is the 6th kind of machine construction principle figure.
Fig. 7 is the 7th kind of machine construction principle figure.
Fig. 8 is the 8th kind of machine construction principle figure.
Fig. 9 is the 9th kind of machine construction principle figure.
Figure 10 is the tenth kind of machine construction principle figure.
Figure 11 is the 11 kind of machine construction principle figure.
Figure 12 is the 12 kind of machine construction principle figure.
Figure 13 is the 13 kind of machine construction principle figure.
Figure 14 is a hydraulic structure schematic diagram of the present invention.
Figure 15 is second kind of hydraulic structure schematic diagram of the present invention.
Figure 16 is the third hydraulic structure schematic diagram of the present invention.
(5) embodiment
Below in conjunction with accompanying drawing the present invention is further described.
With reference to Fig. 1, Figure 14, a kind of prime motor output torque balance control system, described control system comprises storage pump 5, accumulator 4, assist motor 2, transfer gear 11,14 with the central gear 13 that is connected with internal-combustion engine 12 output shafts, the input shaft of storage pump 5 connects first transfer gear 14, first transfer gear 14 and central gear 13 engagements, described central gear 13 is connected with the input shaft 15 of Main Hydraulic Pump, the output shaft of described assist motor 2 connects second transfer gear 11, second transfer gear 11 and central gear 13 engagements, described storage pump 5 is in transmission connection with assist motor 2; The outlet of described storage pump 5 is by the gateway of the described accumulator 4 of first one-way valve, 3 connections, and 3 on first one-way valve allows hydraulic oil to flow to the import and export of accumulator 4 from storage pump 5 outlets; The gateway of described accumulator 4 directly connects the inlet of assist motor 2, and the inlet that described power-assisted horse 2 reaches also is connected with hydraulic oil container 8 by second one- way valve 1,1 inlet that allows hydraulic oil to flow to assist motor from fuel tank 8 of second one-way valve; Described control system also comprises in order to the torque controller according to control signal control storage pump and main force's motor displacement.
Prime mover of present embodiment is example with the internal-combustion engine, adopts diesel engine, can certainly be other prime mover.
In the present embodiment, the discharge capacity of storage pump 5 and assist motor 2 is subjected to the control of torque controller, and torque controller is controlled the discharge capacity of storage pump 5 and assist motor 2 according to the pressure of accumulator 4 and the load torque on Main Hydraulic Pump 15 input shafts.
In Fig. 1～Figure 13, diesel engine 12, assist motor 2, storage pump 5, the annexation of hydraulic pressure main pump 15 these several parts on mechanical transmission have been expressed.As can be seen, diesel engine 12 is except direct driving hydraulic pressure main pump 15, also drive storage pump 5 by gear transmission or direct coaxial connection, assist motor 2 then by gear transmission or with direct coaxial connection of diesel engine output shaft, under the control of torque controller except when incoming pressure is low, can being driven by diesel engine 12, when incoming pressure is higher, also drive the output shaft of diesel engine 12 conversely, drive Main Hydraulic Pump 15 and storage pump 5 with diesel engine 12.
Wherein, in Fig. 2, storage pump 5 and assist motor 2 are the axis connecting mode, assist motor 2 is installed in the afterbody of storage pump 5, prerequisite is that storage pump 5 is pumps of axis type, central gear 13 engagements on 14 of first transfer gear, 14, the first transfer gears and the output shaft that is contained in diesel engine 12 are housed on the input shaft of storage pump 5, and central gear 13 is connected with the output shaft of Main Hydraulic Pump 15.
In Fig. 3, storage pump 5 and assist motor 2 still are the axis connecting mode, storage pump 5 is installed in the afterbody of assist motor 2, prerequisite is that assist motor 2 is motors of axis type, be equipped with on the output shaft of assist motor 2 second fen, central gear 13 is connected central gear 13 engagements on 11 of moving gear 11, the second transfer gears and the output shaft that is contained in diesel engine 12 with the output shaft of Main Hydraulic Pump 15.
In Fig. 4, second transfer gear 11 is housed on the output shaft of assist motor 2, central gear 13 engagements on 11 of second transfer gears and the output shaft that is contained in diesel engine 12, central gear 13 is connected with the output shaft of Main Hydraulic Pump 15, and the output shaft connection of Main Hydraulic Pump 15 is connected with storage pump 5.
In Fig. 5, second transfer gear 11 is housed on the output shaft of assist motor 2, central gear 13 engagements on 11 of second transfer gears and the output shaft that is contained in diesel engine 12, central gear 13 is connected with storage pump 5, and storage pump 5 is connected with the output shaft of Main Hydraulic Pump 15.
In Fig. 6, second transfer gear 11 is housed on the output shaft of storage pump 5, central gear 13 engagements on 11 of second transfer gears and the output shaft that is contained in diesel engine 12, central gear 13 is connected with the output shaft of Main Hydraulic Pump 15, and the output shaft connection of Main Hydraulic Pump 15 is connected with assist motor 2.
In Fig. 7, second transfer gear 11 is housed on the output shaft of storage pump 5, central gear 13 engagements on 11 of second transfer gears and the output shaft that is contained in diesel engine 12, central gear 13 is connected with assist motor 2, and assist motor 2 is connected with the output shaft of Main Hydraulic Pump 15.
In Fig. 8～13, the output shaft of described diesel engine 12 connects with the output shaft of Main Hydraulic Pump 15, described assist motor 2, storage pump 5 all with 15 coaxial connections of Main Hydraulic Pump.Front and back position for Main Hydraulic Pump 15, assist motor 2, storage pump 5 makes up, and obtains six kinds of different drive connections.
Under the structural type of Fig. 1～Figure 13, torque controller detects the load torque of Main Hydraulic Pump 15 automatically, according to the load torque size of detected Main Hydraulic Pump 15 and the pressure of current accumulator 4, the discharge capacity of control storage pump 5 and assist motor 2.Under the structural type of Fig. 1～Figure 13, suitably control the ratio of the flow of storage pump 5 and assist motor 2, just can control accumulator 4 or from the output shaft of diesel engine 12, absorb energy, perhaps export energy to the output shaft of diesel engine 12.Concrete principle is: according to the load torque size of Main Hydraulic Pump 15 and the pressure of current accumulator 4, the flow of control storage pump 5 is greater than the flow of assist motor 2 when Main Hydraulic Pump 15 is in little load state, the hydraulic oil that assist motor 2 does not absorb then enters accumulator 4, this moment, accumulator 4 absorbed energy from the output shaft of diesel engine 12, had been equivalent to increase the moment of torsion burden on diesel engine 12 output shafts.When Main Hydraulic Pump 15 is in the heavy load situation, the flow of then controlling storage pump 5 is less than the assist motor flow, the underfed of storage pump 5 is to drive assist motor 2 at this moment, the hydraulic fluid flow rate that this is not enough then nature is provided by accumulator 4, forms assist motor 2 by storage pump 5 and the accumulator 4 common situations that drive.The output shaft of 2 pairs of diesel engines 12 of assist motor this moment has driving action, is equivalent to the output shaft output energy of accumulator 4 to diesel engine 12, makes accumulator 4 drive Main Hydraulic Pump 15 with diesel engine 12, alleviates the moment of torsion burden on diesel engine 12 output shafts.Like this, by the flow ratio of control storage pump 5 and assist motor 2, no matter Main Hydraulic Pump 15 is in little load state still is the heavy load situation, and finally the load torque that all will control on diesel engine 12 output shafts remains unchanged substantially.
7 safety effects of relief valve.
With reference to Fig. 1～13, Figure 15, Figure 16, the gateway of the accumulator 4 of present embodiment connects the inlet of assist motor 2 by second controlled one-way valve 9, this controlled one-way valve 9 do not have to stop under the condition of control signal hydraulic oil from the gateway of accumulator 4 inlet to assist motor 2; Described torque controller is according to the pilot pressure output signal P of engineering machinery
i, in the ban the pilot force signal preset greater than setting threshold value the time, send path command signal P to second controlled one-way valve 9
iOn the described accumulator 4 pressure transducer 6 is housed, the outlet of described storage pump 5 also connects fuel tanks 8 by first controlled one-way valve 10, and this controlled one-way valve 10 is not having to stop under the condition of control signal hydraulic oil to export to fuel tank 8 from described storage pump 5; Described torque controller sends P according to the pressure signal of pressure transducer 6
c, when threshold value that pressure signal presets greater than setting, send control signal P to first controlled one-way valve 9
cMake the path instruction effectively, make storage pump 5 by 9 off-loads of first controlled one-way valve.
First controlled one-way valve 9, second controlled one-way valve 10 can be Pilot operated check valve, fluid-controlled cut-off valve or electromagnet cut off valve.
With reference to Figure 15, the import and export of accumulator 4 also can link to each other with inlet with assist motor 2 by second controlled one-way valve 9, and second controlled one-way valve 9 stops hydraulic oil to flow to the filler opening of assist motor 2 from accumulator 4 when not having the hydraulic control signal.Make P by second controlled one-way valve 9 and pilot control pressure signal
iSignal is effective, can control accumulator and be from the output shaft of diesel engine 12 to absorb energy or release energy to the output shaft of diesel engine 12.When engineering machinery is not operated, P
iInvalidating signal, engineering machinery is in unloaded state, second controlled one-way valve 9 stops hydraulic oil to flow to the inlet of assist motor 2 from accumulator 4, make storage pump 5 to accumulator 4 accumulation of energys, accumulator 4 absorbs energy from the output shaft of diesel engine 12, and the assist motor filler opening absorbs hydraulic oil to avoid inhaling sky by second one-way valve 1 from fuel tank 8 simultaneously; When engineering machinery has operation, P
iSignal is effective, engineering machinery is in running order, second controlled one-way valve 9 is in pass-through state, this moment is because the effect of second one-way valve 1 stops high pressure oil to flow into fuel tank 8, high-pressure and hydraulic oil in the accumulator 4 can all be directly inputted to the inlet of assist motor 2, make assist motor 2 auxiliary diesels 12 drive Main Hydraulic Pump 15, to satisfy the need of work of engineering machinery.
With reference to Figure 15, the oil outlet of storage pump 5 can also lead to fuel tank 8, the first controlled one-way valve 10 by a branch road that first controlled one-way valve 10 is housed and can stop hydraulic oil to flow to fuel tank 8 from the outlet of storage pump 5 when not having the hydraulic control signal.There is not control signal P
cThe time, first controlled one-way valve 10 is in unidirectional state, stops hydraulic oil to flow to fuel tank 8 from the outlet of storage pump 5, and the hydraulic oil of storage pump 5 outputs can only flow into accumulator 4 and carry out accumulation of energy.In the accumulation of energy process, the pressure in the accumulator 4 raises gradually, when controller utilizes pressure transducer 6 to detect pressure in the accumulator 4 to be higher than certain value, sends a signal and makes control signal P
cEffectively, thereby make first controlled one-way valve 10 be in pass-through state, make the output of storage pump 5 can flow directly into fuel tank, for storage pump 5 provides unloading function, avoided owing to accumulator 4 overpressure cause wherein the hydraulic oil power loss that overflow caused from relief valve 7, meanwhile, 3 on first one-way valve has stoped the hydraulic oil in the accumulator 4 to flow into fuel tank by first controlled one-way valve 10, thereby has preserved the previous energy that holds.
In this embodiment, storage pump 5 and assist motor 2 both can be to become the discharge capacity structure, also can be the fixed displacement structures.Under the fixed displacement structure,, reduced the lack of uniformity of diesel engine 12 output torques at least to a certain extent though can not realize the equilibrium control of diesel engine 12 output torques fully.Become under the discharge capacity structures in storage pump 5 and assist motor 2, the moment of torsion propertional controller control strategy that applicating adn implementing example one is same also can be realized and balanced control of moment of torsion of embodiment's one same effect.
Substitute second controlled one-way valve, 9, the first fluid-controlled cut-off valve 10A among Figure 15 with the second fluid-controlled cut-off valve 9A among Figure 16 and substitute first controlled one-way valve 10 among Figure 15.
All the other structures are identical with embodiment 1 with working procedure.
Claims (6)
1. prime motor output torque balance control system, described control system comprises hydraulic oil container, accumulator, the storage pump that is in transmission connection with original machine output shaft, assist motor, the input shaft of described original machine output shaft and Main Hydraulic Pump is in transmission connection, described accumulation of energy delivery side of pump connects the gateway of described accumulator by first one-way valve that is used to allow hydraulic oil to export to the import and export of accumulator from storage pump, the gateway of described accumulator connects the inlet of assist motor, and the inlet of described assist motor is also by being used to allow second one-way valve of the inlet of hydraulic oil from described hydraulic oil container to assist motor to be connected with hydraulic oil container; Described control system also comprises in order to the torque controller according to control signal control storage pump and assist motor discharge capacity; Setting pressure sensor on the described accumulator; Described accumulation of energy delivery side of pump is also by being used for not having to stop hydraulic oil to connect hydraulic oil container from first controlled one-way valve that exports to hydraulic oil container of described storage pump under the condition of control signal; Described torque controller is according to the pressure signal output control signal P of pressure transducer
c, when threshold value that pressure signal presets greater than setting, send the path instruction to first controlled one-way valve and make P
cEffectively; It is characterized in that:
Described control system also comprises transfer gear, the central gear that is connected with original machine output shaft, the input shaft of storage pump connects transfer gear, transfer gear and central gear engagement, described central gear is connected with the input shaft of Main Hydraulic Pump, and described assist motor is with storage pump or Main Hydraulic Pump is coaxial connects.
2. prime motor output torque balance control system as claimed in claim 1 is characterized in that: the gateway of described accumulator is by being used for not having to stop hydraulic oil to connect the inlet of assist motor to second controlled one-way valve of the inlet of assist motor from the gateway of described accumulator under the condition of control signal; Described torque controller is according to the pilot pressure signal output channel command signal P of engineering machinery
i, in the ban the pilot force signal preset greater than setting threshold value the time, send the described path command signal P of path to second controlled one-way valve
i
3. prime motor output torque balance control system as claimed in claim 2 is characterized in that: described first controlled one-way valve, second controlled one-way valve are Pilot operated check valve, fluid-controlled cut-off valve or electromagnet cut off valve.
4. prime motor output torque balance control system as claimed in claim 3 is characterized in that: described storage pump is for becoming the storage pump of discharge capacity structure or fixed displacement structure, and described assist motor is for becoming the assist motor of discharge capacity structure or fixed displacement structure.
5. prime motor output torque balance control system as claimed in claim 1 is characterized in that: the outlet of described accumulator connects hydraulic oil container by relief valve.
6. prime motor output torque balance control system as claimed in claim 1 is characterized in that: described original machine output shaft connects with the input shaft of Main Hydraulic Pump, and described assist motor, storage pump all connect with Main Hydraulic Pump is coaxial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100685051A CN101302963B (en) | 2007-05-11 | 2007-05-11 | Prime motor output torque balance control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100685051A CN101302963B (en) | 2007-05-11 | 2007-05-11 | Prime motor output torque balance control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101302963A CN101302963A (en) | 2008-11-12 |
| CN101302963B true CN101302963B (en) | 2010-06-09 |
Family
ID=40113019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100685051A Expired - Fee Related CN101302963B (en) | 2007-05-11 | 2007-05-11 | Prime motor output torque balance control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101302963B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020164103A1 (en) * | 2019-02-15 | 2020-08-20 | Guangxi Liugong Machinery Co., Ltd. | Construction machine with flywheel arrangement |
| CN115324150B (en) * | 2022-08-25 | 2023-09-05 | 江苏徐工工程机械研究院有限公司 | Control method of backhoe loader and backhoe loader |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86203555U (en) * | 1986-05-21 | 1986-12-10 | 王昌令 | Booster for starting of car |
| CN87100344A (en) * | 1987-01-09 | 1987-07-29 | 江绍成 | Kinetic energy accumulation fuel-saving system for motor vehicles |
| CN201071519Y (en) * | 2007-05-18 | 2008-06-11 | 浙江工业大学 | Output torque equalization control device of prime motor |
-
2007
- 2007-05-11 CN CN2007100685051A patent/CN101302963B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86203555U (en) * | 1986-05-21 | 1986-12-10 | 王昌令 | Booster for starting of car |
| CN87100344A (en) * | 1987-01-09 | 1987-07-29 | 江绍成 | Kinetic energy accumulation fuel-saving system for motor vehicles |
| CN201071519Y (en) * | 2007-05-18 | 2008-06-11 | 浙江工业大学 | Output torque equalization control device of prime motor |
Non-Patent Citations (2)
| Title |
|---|
| 附图1,2,6. |
| 附图8. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101302963A (en) | 2008-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201071519Y (en) | Output torque equalization control device of prime motor | |
| CN201363332Y (en) | Large inertia variable frequency volume bypass throttling speed governing system | |
| CN102241379B (en) | Energy-saving travelling type hydraulic transport machine | |
| CN100520087C (en) | Rotating speed variable driving shield cutterhead energy-saving hydraulic control system | |
| CN102877495B (en) | Hybrid power system for recovering potential energy of movable arm of excavating machine | |
| CN203868275U (en) | Hydraulic stepless speed change transmission mechanism | |
| CN108533546B (en) | Hydraulic excavator power system adopting double-pump direct drive and differential fast forward automatic switching | |
| EP2610517A2 (en) | Hydraulic system, driving system and electric vehicle | |
| CN107013535B (en) | A kind of pressure Self Matching energy utility system | |
| CN102619812A (en) | Test stand for self-adaptive power recovering of hydraulic pump | |
| CN101113597B (en) | Prime move output torque equalising control device | |
| CN101302963B (en) | Prime motor output torque balance control system | |
| CN107482840A (en) | Action potential accumulating loop and motor compound drive system and its control method | |
| CN113700686A (en) | Electricity-machinery-hydraulic pressure hybrid energy storage unit | |
| CN201116558Y (en) | Prime motor output torque balance control device | |
| CN203062948U (en) | Hydraulic pilot control system of oil-liquid hybrid power concrete mixer truck | |
| CN108179781A (en) | Loader hydraulic control system | |
| CN201095777Y (en) | Hydraulic device for balancing internal combustion engine output torque | |
| CN202745096U (en) | Hybrid power system capable of recycling potential energy of movable arm of excavator | |
| CN104515680B (en) | Hydraulic loading closed driving axle testing device | |
| CN201162738Y (en) | Energy-saving hydraulic control apparatus of variable rotation speed driving shield blade disc | |
| CN113738710A (en) | Parallel type electro-hydraulic hybrid energy storage unit | |
| CN204435341U (en) | A kind of energy-saving safeguard device for lifting of ocean platform | |
| CN107458387B (en) | Hydraulic auxiliary acceleration system for electro-hydraulic rail car | |
| CN108915021B (en) | Multi-mode rotary electrohydraulic control system for hydraulic excavator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Anhui Grand Machinery Manufacturing Co., Ltd. Assignor: Zhejiang University of Technology Contract record no.: 2012340000168 Denomination of invention: Prime motor output torque balance control system Granted publication date: 20100609 License type: Exclusive License Open date: 20081112 Record date: 20120514 |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20081112 Assignee: Anhui Grand Machinery Manufacturing Co., Ltd. Assignor: Zhejiang University of Technology Contract record no.: 2012340000168 Denomination of invention: Prime motor output torque balance control system Granted publication date: 20100609 License type: Exclusive License Record date: 20120514 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100609 Termination date: 20150511 |
|
| EXPY | Termination of patent right or utility model |