CN103299075A - Electric pump device - Google Patents
Electric pump device Download PDFInfo
- Publication number
- CN103299075A CN103299075A CN2012800046733A CN201280004673A CN103299075A CN 103299075 A CN103299075 A CN 103299075A CN 2012800046733 A CN2012800046733 A CN 2012800046733A CN 201280004673 A CN201280004673 A CN 201280004673A CN 103299075 A CN103299075 A CN 103299075A
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- Prior art keywords
- motor
- hydraulic pressure
- oil pump
- pump
- supply
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/08—Regulating by delivery pressure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Control Of Transmission Device (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention provides an electric pump device in which it is possible to minimize the amount of vibrations and noise generated. An electric oil pump ECU performs a pressure-reduction control in which the hydraulic pressure Po supplied from an oil pump gradually decreases when the hydraulic pressure Po is lowered in concert with an increase in the hydraulic pressure supplied from a main pump driven by an engine.
Description
Technical field
The present invention relates to a kind of motor-drive pump device.
Background technique
Usually, when having the vehicle temporary parking, automatically stop in vehicle motor, so-called idling hold function, by supplying with hydraulic pressure as the motor-drive pump device of driving source to the apply device such as speed changer (for example, referring to Patent Document 1) by engine-driven main pump with motor.Particularly, the oil pump of main pump and motor-drive pump device is connected to for common oil hydraulic circuit from hydraulic pressure to apply device that supply with.In addition, when motor is driven, stop usually to apply device supply hydraulic pressure and motor-drive pump device by main pump.Simultaneously, stop when stopping---stopping such as idling---at motor owing to main pump, guaranteed to supply with to the hydraulic pressure of apply device by the motor-drive pump device.
The prior art document
Patent Document
Patent Document 1:JP-A-2010-78088
Summary of the invention
Technical problem to be solved by this invention
By way of parenthesis, when motor restarts after idling stops and supplying with when switching to main pump from the motor-drive pump device to the hydraulic pressure of apply device, if the motor-drive pump device stops immediately, then the hydraulic pressure of supplying with from motor-drive pump device (oil pump) sharply changes.The rapid fluctuation of hydraulic pressure takes place in oil hydraulic circuit as a result.For this reason, there is the possibility that produces vibration or noise.
The present invention is devoted to solve the above problems, and the purpose of this invention is to provide a kind of motor-drive pump device that can suppress the generation of vibration or noise.
Solution
In order to reach this purpose, according to a first aspect of the invention, a kind of motor-drive pump device is provided, this motor-drive pump device comprises: the You Beng ﹑ that produces hydraulic pressure drives motor and the controller by controlling to the driving power supply of motor and to the running of oil pump of this oil pump, and this motor-drive pump device is arranged in the oil hydraulic circuit of apply device supply work oil with another oil pump.When the hydraulic pressure supply of being carried out by another oil pump to apply device stopped, the controller function oil pump was supplied with the hydraulic pressure of subtend apply device and is replenished.When the hydraulic pressure supply to apply device switched to another oil pump from oil pump, controller was carried out the hydraulic pressure of decompression control little by little to reduce to supply with from oil pump.
According to above-mentioned structure, when supplying with to the hydraulic pressure of apply device when switching to another oil pump from the oil pump of motor-drive pump device, carry out decompression control, make the hydraulic pressure of supplying with from oil pump little by little reduce.Therefore, with different when the motor-drive pump device stops immediately, suppressed in oil hydraulic circuit, to take place the rapid fluctuation of hydraulic pressure.Therefore, supply with to the hydraulic pressure of apply device and to switch to another oil pump from the motor-drive pump device reposefully, thereby can the generation of vibration or noise be suppressed.
According to a second aspect of the invention, in the motor-drive pump device according to first aspect, motor can be made of no sensor type brushless motor, controller can be estimated the rotational position of rotor based on the induced voltage that produces at the motor coil place, and when supplying with hydraulic pressure by another oil pump to apply device, controller can keep following motor angular velocity: can detect rotational position based on induced voltage under this motor angular velocity.
That is to say, when rotor stops, not producing induced voltage.Therefore, be supplied to the sense of current of each motor coil and phase place and rotor and no matter the rotational position of rotor how, makes no sensor type brushless motor startup forcibly by switch (mandatory commutation) with predetermined order.In addition, because motor angular velocity (rotational speed of rotor) increases and based on the rotational position that the induced voltage that produces at the motor coil place can detection rotor, thereby can control hydraulic pressure.For this reason, if motor stops fully, then can before motor-drive pump unit feeding hydraulic pressure, the long period will continued.In this, according to above-mentioned structure, even when supplying with hydraulic pressure by other oil pump to apply device, motor angular velocity still remains on following angular velocity: the position that can come detection rotor under this angular velocity based on induced voltage.Therefore, when the supply of the hydraulic pressure from another oil pump to apply device reduces, can promptly supply with hydraulic pressure from the oil pump of motor-drive pump device.
In addition, corresponding hydraulic pressure is supplied with from oil pump constantly---can to come the rotational position of detection rotor based on induced voltage under this angular velocity---with angular velocity.Therefore, be that zero situation is compared with the hydraulic pressure of supplying with from oil pump, can be suppressed to the hydraulic pressure of apply device and supply with the fluctuation that hydraulic pressure takes place when switching to another oil pump from the motor-drive pump device.
Beneficial effect
According to the present invention, can provide a kind of motor-drive pump device that can suppress the generation of vibration or noise.
Description of drawings
Fig. 1 illustrates the schematic representation of formation from the oil hydraulic circuit of hydraulic pressure to gear that supply with.
Fig. 2 is the block diagram that the electric formation of motor-drive pump device is shown.
Fig. 3 illustrates the view that will reduce from the hydraulic pressure that the oil pump of present embodiment is supplied with.
Fig. 4 illustrates the view that will reduce from the hydraulic pressure that another oil pump is supplied with.
Fig. 5 illustrates the view that will reduce from the hydraulic pressure that another oil pump is supplied with.
Embodiment
Embodiments of the present invention are described with reference to the accompanying drawings.
Motor-drive pump device 1 shown in Fig. 1 is installed on the vehicle (not shown) with the so-called idling hold function that automatically stops motor 2 when the vehicle temporary parking.Motor-drive pump device 1 is arranged on to the gear 4(as apply device with the main pump 3 as another oil pump that is driven by motor 2 and is stepless speed variator in this embodiment) supply with in the oil hydraulic circuit 5 of hydraulic pressure (work oil).Substitute main pump 3 when in addition, motor-drive pump device 1 stops at motor 2---stopping such as idling---and supply with hydraulic pressure to gear 4.
At length, main pump 3 is connected to motor 2 being driven by motor 2, and supplies with hydraulic pressures by the driving of motor 2 from food tray 11 absorption work oil and to gear 4.Simultaneously, motor-drive pump device 1 comprises that oil pump 12 ﹑ that produce hydraulic pressure drive motor 13 ﹑ of oil pump 12 and the EOP(electric oil pump of controlling motor 13 operations as controller) ECU14.In addition, when oil pump 12 was driven by motor 13, motor-drive pump device 1 was supplied with hydraulic pressure from food tray 11 absorption work oil and to gear 4.Simultaneously, safety check 16, and---preventing work oil adverse current when motor 13 stops---being arranged on the outlet oil circuit 15 of oil pump 12.
Main ECU18 is connected to motor 2.Various sensor valuess---such as the speed of a motor vehicle and accelerator open degree---input to main ECU18, and main ECU18 is based on the operation of these corresponding quantity of state control motors 2 and the operation of gear 4.For example, master ECU18 stops motor 2 when satisfying predetermined stop condition, and the idling that execution is restarted motor 2 when satisfying predetermined restart condition stops control.
In addition, EOPECU14 is connected to main ECU18.And EOPECU14 is suitable for based on 4 supplying with hydraulic pressures by drive motor 13 and from oil pump 12 to gear from the control signal of main ECU18 output when idling stops.
Then, will the electric formation of motor-drive pump device be described.
As shown in figure 2, EOPECU14 comprises and drives loop 21 and microcomputer 22, drives loop 21 and supplies with the driving electric power of three-phases to motor 13, and microcomputer 22 is by coming drive motor 13 to driving loop 21 output motor control signals.Simultaneously, in this embodiment, EOPECU14 supplies with to motor 13 by 120 ° of square wave energisings and drives electric power, and in these 120 ° of square wave energisings, optimizing phase and energising direction per 120 ° (electrical angles) are switched once.Adopt no sensor type brushless motor---it does not comprise the turn-sensitive device of the rotational position of detection rotor 24---as motor 13 in addition, and microcomputer 22 is based on the rotational position of estimating rotor 24 at the induced voltage of the motor coil 25u of each phase place ﹑ 25v and the generation of 25w place.
At length, adopt well-known PWM inverter as driving loop 21, in this PWM inverter, three switching arms corresponding with 25w with the motor coil 25u ﹑ 25v of each phase place are connected in parallel, and the switching member that pair of series connects is as elementary cell (switching arm).That is the opening/close-state (dutycycle of the switching arm of each phase place) of the switching member that, the motor control signal from microcomputer 22 output limits each phase place---form and drive loop 21---.In addition, driving loop 21 is adapted for and makes and export motor 13 to based on Tong Dian Xiang ﹑ energising direction with corresponding to the driving electric power of the dutycycle of its switch mode.
Detect motor coil 25u ﹑ 25v and the terminal voltage Vu ﹑ Vv of 25w and voltage transducer 26u ﹑ 26v and the 26w of Vw and be connected to microcomputer 22.Microcomputer 22 is based on the rotational position (angle of rotation) of estimating rotor 24 by the induced voltage (counterelectromotive force) of voltage transducer 26u ﹑ 26v and detected each motor coil of 26w 25u ﹑ 25v and 25w.Particularly, microcomputer 22 is estimated the rotational position of rotor 24 corresponding to the method for the residing time point of reference potential (zero-point of intersection) by well-known detection induced voltage.In addition, microcomputer 22 is determined switch mode according to the rotational position that estimates of rotor 24.
In addition, main ECU18 is connected to microcomputer 22 with the current sensor 27 of the actual current value I that detects the electric current that is supplied to motor 13.Microcomputer 22 by execution make the feedback control of actual current value I follow current command value I* determine with current instruction value I* and actual current value I between the corresponding dutycycle of deviation, wherein, current instruction value I* is included in from the control signal of main ECU output.In addition, microcomputer 22 exports motor control signal to and drives loop 21, the dutycycle that this motor control signal represents switch mode and determines in this way.Therefore, driven to motor 13 supply three-phase drive electric power and motor 13 from driving loop 21, make and supply with hydraulic pressures from oil pump 12.
Then, supply with the switching of the pump of hydraulic pressures with what describe this mode of execution to gear 4.
Because motor 2 stops when idling stops and not supplying with hydraulic pressure from main pump 3, come the control signal that oil pump 12 supplies with hydraulic pressures to gear 4 of passing through of autonomous ECU18 to export EOPECU14 to.In addition, EOPECU14 supplies with hydraulic pressure Po based on this control signal (current instruction value I*) by drive motor 13.Simultaneously, when motor 2 restarts and surpasses predetermined value from the hydraulic pressure Pm that main pump 3 is supplied with, make the hydraulic pressure of being carried out by oil pump 12 supply with the control signal that stops and exporting EOPECU14 to from main ECU18, and switch to main pump 3 to the hydraulic pressure supply of gear 4 from motor-drive pump device 1.
At this, when motor-drive pump device 1(oil pump 12) receive from the control signal of main ECU output and when stopping immediately, the hydraulic pressure of being supplied with by motor-drive pump device 1 sharply reduces, thereby the rapid fluctuation of hydraulic pressure takes place in oil hydraulic circuit 5.For this reason, there is the possibility that produces vibration or noise.
On this basis, EOPECU14 carries out decompression control need not to stop immediately motor 13 little by little to reduce the hydraulic pressure Po that supplies with from oil pump 12 operation, even the control signal that motor 13 is stopped from main ECU18 input also is like this.Particularly, in the decompression of this mode of execution control, when changing the lowering speed of the hydraulic pressure Po that supplies with from oil pump 12 continuously, EOPECU14 reduces hydraulic pressure Po.In addition, when supplying with hydraulic pressure by main pump 3 to gear 4, EOPECU14 is suitable for motor angular velocity omega (rotational speed of rotor 24) is remained on following standby angular velocity omega s: the position that can come detection rotor under this standby angular velocity omega s based on the induced voltage in motor coil 25u ﹑ 25v and the generation of 25w place.
As shown in Figure 3, in having the motor-drive pump device 1 of this structure, when the control signal that the hydraulic pressure of carrying out by oil pump 12 is supplied with stop when time t inputs to EOPECU14 from main ECU18, carry out decompression control.Therefore, the hydraulic pressure Po that supplies with from oil pump 12 little by little reduces.In addition, when hydraulic pressure was decreased to standby hydraulic pressure Pos by supplying with from oil pump 12 with the motor 13 of standby angular velocity omega s rotation, hydraulic pressure remained on standby hydraulic pressure Pos.
As described above, according to present embodiment, can obtain following action effect.
(1) when the hydraulic pressure supply to gear 4 switched to the main pump 3 that is driven by motor 2 from oil pump 12, EOPECU14 carried out decompression control, little by little to reduce from the hydraulic pressure Po of oil pump 12 supplies.
According to said structure, carry out decompression control and make the hydraulic pressure Po that supplies with from the oil pump 12 of motor-drive pump device 1 little by little reduce.Therefore, different when stopping immediately with motor-drive pump device 1, suppressed in oil hydraulic circuit 5, to take place the rapid fluctuation of hydraulic pressure.Therefore, supply with to the hydraulic pressure of gear 4 and to switch to main pump 3 from motor-drive pump device 1 reposefully, thereby can suppress to vibrate or the generation of noise.
(2) motor 13 is made of no sensor type brushless motor.In addition, EOPECU14 is suitable for the motor angular velocity omega is remained on following standby angular velocity omega s: the position that can come detection rotor under this standby angular velocity omega s based on the induced voltage in motor coil 25u ﹑ 25v and the generation of 25w place.
That is to say, when rotor 24 stops, not producing induced voltage.Therefore, be supplied to the sense of current of each motor coil 25u ﹑ 25v and 25w and phase place and rotor 24 and no matter the rotational position of rotor 24 how, makes no sensor type brushless motor startup forcibly by switch (mandatory commutation) with predetermined order.In addition, because the motor angular velocity omega increases and can come the rotational position of detection rotor 24 based on the induced voltage in motor coil 25u ﹑ 25v and the generation of 25w place, so can control hydraulic pressure.For this reason, if motor 13 stops fully, then the long period will be continued up to supplying with hydraulic pressure from motor-drive pump device 1.In this, according to said structure, even when supplying with hydraulic pressure by main pump 3 to gear 4, the motor angular velocity omega still remains on following standby angular velocity omega s: the rotational position that can come detection rotor 24 under this standby angular velocity omega s based on induced voltage.Therefore, when from main pump 3 to apply device 4 hydraulic pressure supply with when reducing, can promptly supply with hydraulic pressure from motor-drive pump device 1.
In addition, the standby hydraulic pressure Pos corresponding to standby angular velocity omega s supplies with from oil pump 12 constantly.Therefore, be that 0 situation is compared with the hydraulic pressure Po that supplies with from oil pump 12, can suppress when supply with the generation that hydraulic pressure fluctuates when switching to main pump 3 from motor-drive pump device 1 to the hydraulic pressure of gear 4.
(3) owing to EOPECU14 changes continuously from the lowering speed of the hydraulic pressure of oil pump 12 supplies, thereby can suitably suppress the fluctuation of hydraulic pressure.
Simultaneously, above-mentioned mode of execution can pass through below suitably to revise in the aspect that present embodiment obtains and implements.
In the above-described embodiment, when the lowering speed of the hydraulic pressure Po that supplies with from oil pump 12 changed constantly, hydraulic pressure Po reduced.Yet, the invention is not restricted to this, and hydraulic pressure Po can be decreased to standby hydraulic pressure Pos with constant lowering speed and can keep standby hydraulic pressure Pos.In addition, as long as little by little reduce hydraulic pressure Po, then where decompression control can be in office be carried out in the face.
For example, as shown in Figure 4, hydraulic pressure can temporarily remain on predetermined hydraulic pressure during the reducing of the hydraulic pressure Po that supplies with from oil pump 12.And, can set a plurality of predetermined hydraulic pressures, make hydraulic pressure cascade ground reduce.During the reducing of hydraulic pressure Po, when temporarily keeping hydraulic pressure in this way, reduce hydraulic pressure by cascade ground and can be suppressed at the unexpected fluctuation that hydraulic pressure takes place in the oil hydraulic circuit 5 reliably.
In addition, for example as shown in fig. 5, the hydraulic pressure Po that supplies with from oil pump 12 can just reduce after temporary transient the rising.According to this structure, even the hydraulic pressure Pm that supplies with from main pump 3 is higher than hydraulic pressure Po, still can when carrying out decompression control, make these hydraulic pressures Po and Pm close to each other.Therefore, can suitably suppress the fluctuation of hydraulic pressure.
In addition, for example similar to the situation that the hydraulic pressure Po that supplies with from oil pump 12 just reduces to cascade after temporary transient the rising, can be with in combination aspect the reducing of the hydraulic pressure Po shown in Fig. 3 to Fig. 5.
In the above-described embodiment, EOPECU14 remains on standby angular velocity omega s with the motor angular velocity omega, even also be like this when supplying with hydraulic pressure by main pump 3 to gear 4.Yet, the invention is not restricted to this, and motor 13 can stop fully.
In the above-described embodiment, the motor angular velocity omega remains on standby angular velocity omega s after carrying out decompression control.Yet, the invention is not restricted to this, and motor 13 may be controlled to make the motor angular velocity omega to become standby angular velocity omega s immediately, and can keep this motor angular velocity omega (standby hydraulic pressure Pos) when supplying with to the hydraulic pressure of gear 4 when oil pump 12 switches to main pump 3.Even in this structure, also can obtain (2) action effect according to above-mentioned mode of execution.
In the above-described embodiment, the present invention is applied to motor-drive pump device 1---and this motor-drive pump device 1 is connected to oil hydraulic circuit 5 with the main pump 3 that is driven by motor 2.Yet, the invention is not restricted to this, and the present invention can be applied to the motor-drive pump device---this motor-drive pump device is connected to oil hydraulic circuit with the pump except main pump 3.In addition, oil hydraulic circuit 5 can be provided with a plurality of pumps except motor-drive pump device 1.
Then, with describe in addition below the technical concept that from above-mentioned mode of execution, can grasp and in addition example together with its effect.
(A) the motor-drive pump device according to claim 1 or 2 changes from the lowering speed of the hydraulic pressure of oil pump supply in decompression control.According to above-mentioned structure, can suitably suppress the fluctuation of hydraulic pressure.
(B) in this decompression control, reduce hydraulic pressure according to each and the cascade ground when temporarily keeping the hydraulic pressure of supplying with from oil pump of motor-drive pump device (A) in claim 1 and 2.According to said structure, can be suppressed at the rapid fluctuation that hydraulic pressure takes place in the oil hydraulic circuit reliably.
(C) in this decompression control, according in claim 1 and 2 each and (A) and motor-drive pump device (B) before reducing the hydraulic pressure of supplying with from oil pump, hydraulic pressure is risen.According to above-mentioned structure, even the hydraulic pressure of supplying with from another oil pump is higher than the hydraulic pressure of supplying with from the oil pump of motor-drive pump device, also can when reducing the hydraulic pressure of supplying with from oil pump, make the hydraulic pressure supplied with from each oil pump close to each other.Therefore, can suitably suppress the fluctuation of hydraulic pressure.
(D) the motor-drive pump device comprises the controller that Ma Da ﹑ that the You Beng ﹑ that produces hydraulic pressure drives this oil pump controls the running of oil pump by supplying with to the driving electric power of motor; And this motor-drive pump device is arranged in the oil hydraulic circuit of apply device supply work oil with another oil pump.When the hydraulic pressure supply of carrying out by another oil pump to apply device stopped, the controller function oil pump was supplied with the hydraulic pressure of subtend apply device and is replenished.Motor is made of no sensor type brushless motor, and controller is estimated the rotational position of rotor and kept following motor angular velocity by another oil pump when apply device is supplied with hydraulic pressure based on the induced voltage that produces at the motor coil place: can detect rotational position based on induced voltage under this motor angular velocity.According to above-mentioned structure, can obtain the action effect identical with claim 2.
The Japanese patent application No.2011-000125 that the application submitted to based on January 4th, 2011, its full content merges to herein by reference.
Commercial Application
According to the present invention, can provide a kind of motor-drive pump device that the generation of vibration or noise is suppressed.
Reference numerals list
1: the motor-drive pump device; 2: motor; 3: main pump; 4: gear; 5: oil hydraulic circuit; 12: oil pump; 13: motor; 14:EOPECU; 16: safety check; 18: main ECU; 21: drive the loop; 22: microcomputer; 24: rotor; 25u, 25v, 25w: motor coil; Pm, Po: hydraulic pressure; Pos: standby hydraulic pressure; ω: motor angular velocity; ω s: standby angular velocity.
Claims (according to the modification of the 19th of treaty)
1. motor-drive pump device, comprise: produce the oil pump of hydraulic pressure, the motor that drives described oil pump and the controller by controlling to the driving power supply of described motor and to the running of described oil pump, and described motor-drive pump device is arranged in the oil hydraulic circuit of apply device supply work oil with another oil pump;
Wherein, the hydraulic pressure of the described apply device of subtend was supplied with and is replenished when the described oil pump of described controller function stopped supplying with at the hydraulic pressure of being carried out by described another oil pump to described apply device, and
When supplying with to the hydraulic pressure of described apply device when switching to described another oil pump from described oil pump, described controller is carried out the hydraulic pressure of decompression control little by little to reduce to supply with from described oil pump.
2. motor-drive pump device according to claim 1,
Wherein, described motor is made of no sensor type brushless motor,
Described controller is estimated the rotational position of rotor based on the induced voltage that produces at the motor coil place, and
Described controller keeps following motor angular velocity under state from described another oil pump to described apply device that supply with hydraulic pressure by: under this motor angular velocity, can detect described rotational position based on described induced voltage.
3. motor-drive pump device according to claim 2, wherein,
Described controller changes from the lowering speed of the hydraulic pressure of described oil pump supply in described decompression control.
4. motor-drive pump device according to claim 2, wherein,
Cascade ground reduces described hydraulic pressure in the described hydraulic pressure that described controller is temporarily keeping supplying with from described oil pump in described decompression control.
5. motor-drive pump device according to claim 2, wherein,
Before the described hydraulic pressure that described controller is reducing to supply with from described oil pump in described decompression control described hydraulic pressure is risen.
Claims (2)
1. motor-drive pump device, comprise: produce the oil pump of hydraulic pressure, the motor that drives described oil pump and the controller by controlling to the driving power supply of described motor and to the running of described oil pump, and described motor-drive pump device is arranged in the oil hydraulic circuit of apply device supply work oil with another oil pump;
Wherein, the hydraulic pressure of the described apply device of subtend was supplied with and is replenished when the described oil pump of described controller function stopped supplying with at the hydraulic pressure of being carried out by described another oil pump to described apply device, and
When supplying with to the hydraulic pressure of described apply device when switching to described another oil pump from described oil pump, described controller is carried out the hydraulic pressure of decompression control little by little to reduce to supply with from described oil pump.
2. motor-drive pump device according to claim 1,
Wherein, described motor is made of no sensor type brushless motor,
Described controller is estimated the rotational position of rotor based on the induced voltage that produces at the motor coil place, and
Described controller keeps following motor angular velocity under state from described another oil pump to described apply device that supply with hydraulic pressure by: under this motor angular velocity, can detect described rotational position based on described induced voltage.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-000125 | 2011-01-04 | ||
| JP2011000125A JP2012140912A (en) | 2011-01-04 | 2011-01-04 | Electrical pump device |
| PCT/JP2012/050034 WO2012093677A1 (en) | 2011-01-04 | 2012-01-04 | Electric pump device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103299075A true CN103299075A (en) | 2013-09-11 |
Family
ID=46457528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012800046733A Withdrawn CN103299075A (en) | 2011-01-04 | 2012-01-04 | Electric pump device |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20130280101A1 (en) |
| EP (1) | EP2662567A1 (en) |
| JP (1) | JP2012140912A (en) |
| CN (1) | CN103299075A (en) |
| WO (1) | WO2012093677A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386602A (en) * | 2017-08-10 | 2019-02-26 | 本田技研工业株式会社 | Hydraulic control device |
| CN112283121A (en) * | 2019-07-25 | 2021-01-29 | 戴博水泵股份有限公司 | Electric pump with customizable accessories |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016194063A1 (en) * | 2015-05-29 | 2016-12-08 | 三菱電機株式会社 | Device for controlling electric motor and hydraulic supply system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6443224A (en) * | 1987-08-12 | 1989-02-15 | Hitachi Ltd | Operation of electric cleaner |
| JPH05180159A (en) * | 1992-01-07 | 1993-07-20 | Ebara Densan:Kk | Pump running method |
| JP3286175B2 (en) * | 1996-08-26 | 2002-05-27 | 株式会社山武 | Combustion control device |
| JP3750428B2 (en) * | 1999-07-26 | 2006-03-01 | 日産自動車株式会社 | vehicle |
| JP2002031064A (en) * | 2000-07-19 | 2002-01-31 | Tsurumi Mfg Co Ltd | Water hammering preventing device for motor-driven pump |
| JP3940267B2 (en) * | 2001-02-21 | 2007-07-04 | 株式会社ジェイテクト | Synchronous motor start control device and electric pump for controlling working fluid of automobile drive system using the device |
| JP2002310272A (en) * | 2001-04-13 | 2002-10-23 | Aisin Seiki Co Ltd | Hydraulic supply system in automatic transmission for vehicle |
| US6926639B2 (en) * | 2003-07-02 | 2005-08-09 | Visteon Global Technologies, Inc. | Vehicle control method |
| JP2010078088A (en) | 2008-09-26 | 2010-04-08 | Jtekt Corp | Hydraulic pump device for continuously variable transmission |
-
2011
- 2011-01-04 JP JP2011000125A patent/JP2012140912A/en active Pending
-
2012
- 2012-01-04 CN CN2012800046733A patent/CN103299075A/en not_active Withdrawn
- 2012-01-04 WO PCT/JP2012/050034 patent/WO2012093677A1/en active Application Filing
- 2012-01-04 US US13/978,311 patent/US20130280101A1/en not_active Abandoned
- 2012-01-04 EP EP12732001.8A patent/EP2662567A1/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386602A (en) * | 2017-08-10 | 2019-02-26 | 本田技研工业株式会社 | Hydraulic control device |
| CN112283121A (en) * | 2019-07-25 | 2021-01-29 | 戴博水泵股份有限公司 | Electric pump with customizable accessories |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2662567A1 (en) | 2013-11-13 |
| US20130280101A1 (en) | 2013-10-24 |
| WO2012093677A1 (en) | 2012-07-12 |
| JP2012140912A (en) | 2012-07-26 |
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Application publication date: 20130911 |