JP2003009581A - Control method for auxiliary electro-hydraulic pump in automatic transmission for vehicle - Google Patents
Control method for auxiliary electro-hydraulic pump in automatic transmission for vehicleInfo
- Publication number
- JP2003009581A JP2003009581A JP2001188824A JP2001188824A JP2003009581A JP 2003009581 A JP2003009581 A JP 2003009581A JP 2001188824 A JP2001188824 A JP 2001188824A JP 2001188824 A JP2001188824 A JP 2001188824A JP 2003009581 A JP2003009581 A JP 2003009581A
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic pump
- hydraulic
- automatic transmission
- vehicle
- motor
- 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.)
- Pending
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この出願の発明は、車両の自
動変速機における補助電動油圧ポンプの制御方法に関す
るものである。TECHNICAL FIELD The present invention relates to a control method for an auxiliary electric hydraulic pump in an automatic transmission of a vehicle.
【０００２】[0002]
【従来の技術】市街地走行時に、交差点等で車両が停車
した場合、所定の停止条件下でエンジンを自動停止さ
せ、その後、所定の始動条件下でエンジンを再始動させ
ることにより、燃料を節約したり、排気エミッションを
向上させるエンジン自動停止始動装置が知られている。
しかしながら、広く普及している一般的な自動変速機を
搭載している車両では、変速段を完成するための油圧作
動機構の作動油圧を供給する油圧ポンプをエンジンによ
って駆動するように構成されていることから、エンジン
が自動停止すると、油圧作動機構の作動油圧が低下し、
自動変速機がニュートラル状態となる。この状態でエン
ジンが自動的に再始動されると、油圧作動機構の作動油
圧が上昇して自動変速機がエンジン停止直前の状態に復
元し、この時、エンジンの回転数が高いことからショッ
クが発生する。2. Description of the Related Art When a vehicle stops at an intersection or the like while driving in an urban area, fuel is saved by automatically stopping the engine under predetermined stop conditions and then restarting the engine under predetermined start conditions. Or, an engine automatic stop / start device for improving exhaust emission is known.
However, in a vehicle equipped with a widely used general automatic transmission, a hydraulic pump that supplies operating hydraulic pressure of a hydraulic operating mechanism for completing a shift stage is configured to be driven by an engine. Therefore, when the engine automatically stops, the hydraulic pressure of the hydraulic operating mechanism decreases,
The automatic transmission is in neutral. When the engine is automatically restarted in this state, the hydraulic pressure of the hydraulic operating mechanism rises and the automatic transmission restores to the state immediately before the engine stopped.At this time, the engine speed is high and shock is generated. Occur.
【０００３】そこで、電動モータにより駆動する補助電
動油圧ポンプを設置し、エンジンの停止期間においては
補助電動油圧ポンプによって油圧作動機構に作動油圧を
供給することが提案されている（例えば特開平８−１４
０７６号公報参照）。Therefore, it has been proposed to install an auxiliary electric hydraulic pump driven by an electric motor, and to supply an operating hydraulic pressure to the hydraulic operating mechanism by the auxiliary electric hydraulic pump during the engine stop period (for example, Japanese Patent Laid-Open No. 8- 14
076 publication).
【０００４】[0004]
【発明が解決しようとする課題】車両の構成部品は、小
型、軽量、低価格が強く要求される。かかる要求を満た
すためには、補助電動油圧ポンプを駆動する電動モータ
をセンサレスブラシレスＤＣモータとすることが有効で
ある。The components of a vehicle are strongly required to be small in size, light in weight and low in price. In order to meet such requirements, it is effective to use a sensorless brushless DC motor as the electric motor that drives the auxiliary electric hydraulic pump.
【０００５】しかしながら、センサレスブラシレスＤＣ
モータは、回転子の回転速度に応じてコイルに発生する
誘起電圧から回転子の回転位置を推定して通電を切換え
る構成であるため、起動性が劣る難点がある。自動変速
機の油圧作動機構の作動油圧が補助電動油圧ポンプの吐
出側に背圧として作用する構成の場合、エンジンが自動
停止されても油圧作動機構の油圧がすぐには低下しない
ため、エンジンの自動停止に応答してセンサレスブラシ
レスＤＣモータを起動させた場合は、補助電動油圧ポン
プの背圧に打ち勝つ負荷トルクを発生できず、回転子の
回転位置を正確に推定できる誘起電圧の発生に必要な回
転速度が得られず、従って起動できないことが十分に予
測される。起動に失敗したまま通電を継続すると、セン
サレスブラシレスＤＣモータに大電流が流れ続け、モー
タや半導体スイッチが破壊する。However, sensorless brushless DC
Since the motor is configured to switch the energization by estimating the rotational position of the rotor from the induced voltage generated in the coil according to the rotational speed of the rotor, there is a drawback that the startability is poor. When the hydraulic pressure of the hydraulic mechanism of the automatic transmission acts as back pressure on the discharge side of the auxiliary electric hydraulic pump, the hydraulic pressure of the hydraulic mechanism does not immediately drop even if the engine is automatically stopped. When the sensorless brushless DC motor is started in response to the automatic stop, the load torque that overcomes the back pressure of the auxiliary electric hydraulic pump cannot be generated, and it is necessary to generate the induced voltage that can accurately estimate the rotational position of the rotor. It is fully expected that no rotation speed will be obtained and therefore cannot be activated. If energization is continued while the startup fails, a large current continues to flow in the sensorless brushless DC motor, and the motor and semiconductor switch are destroyed.
【０００６】この出願の発明は、センサレスブラシレス
ＤＣモータにより駆動される補助電動油圧ポンプを的確
に起動できるようにしてその破壊から保護することを目
的とする。It is an object of the invention of this application to enable an auxiliary electric hydraulic pump driven by a sensorless brushless DC motor to be accurately started and to protect it from damage.
【０００７】[0007]
【課題を解決するための手段】この出願の発明は、請求
項１に記載したように、車両のエンジンにより駆動され
て自動変速機の油圧作動機構に第１レベルの作動油圧を
供給する主油圧ポンプに対して並列に接続され、前記エ
ンジンの停止期間においてセンサレスブラシレスＤＣモ
ータにより駆動されて前記油圧作動機構に前記第１レベ
ルより低い第２レベルの作動油圧を供給する補助電動油
圧ポンプの制御方法であって、制御電圧を低電圧にして
起動処理を行い、起動に成功しなければ所定の時間間隔
で且つ所定回数以下の範囲で起動処理を繰り返し行い、
起動に成功した後は定電流制御を行うことを特徴とする
車両の自動変速機における補助電動油圧ポンプの制御方
法である。According to the invention of this application, as described in claim 1, a main hydraulic pressure which is driven by an engine of a vehicle and supplies a first level hydraulic pressure to a hydraulic operating mechanism of an automatic transmission. A method for controlling an auxiliary electric hydraulic pump that is connected in parallel to a pump and is driven by a sensorless brushless DC motor during a period in which the engine is stopped to supply a hydraulic pressure of a second level lower than the first level to the hydraulic operating mechanism. In the case where the control voltage is set to a low voltage, the starting process is performed, and if the starting is not successful, the starting process is repeatedly performed at a predetermined time interval and within a predetermined number of times or less,
A method for controlling an auxiliary electric hydraulic pump in an automatic transmission of a vehicle, characterized in that constant current control is performed after a successful start.
【０００８】センサレスブラシレスＤＣモータにより駆
動される補助電動油圧ポンプを起動できる領域は、線形
な吐出圧−流量特性図の高流量側である。一方、負荷を
オリフィスとすると、油圧と流量の関係は非線形であ
り、高い流量側では高い圧力が必要である。従って、起
動時に高い電圧を印加すると、線形な吐出圧−流量特性
図の高吐出圧側に振れ、起動できない場合が多い。しか
るに、この出願の発明においては、起動時は制御電圧を
低電圧、例えば最低電圧にして起動を図り、起動の成功
率を高める。補助電動油圧ポンプはエンジンの停止期間
において自動変速機の油圧作動機構に一定油圧を供給す
るためのものであり、モータ電流とトルクが比例し、ポ
ンプの軸トルクと吐出油圧が比例することから、起動後
は定電流制御を行い、吐出油圧を一定に維持する。起動
時の制御電圧は最低電圧に限定されるものではなく、可
変範囲の低電圧領域であればよい。The area in which the auxiliary electric hydraulic pump driven by the sensorless brushless DC motor can be started is the high flow rate side of the linear discharge pressure-flow rate characteristic diagram. On the other hand, if the load is an orifice, the relationship between the hydraulic pressure and the flow rate is non-linear, and high pressure is required on the high flow rate side. Therefore, when a high voltage is applied at the time of start-up, in many cases the start-up cannot be started because of deviation to the high discharge pressure side of the linear discharge pressure-flow rate characteristic diagram. However, in the invention of this application, at the time of startup, the control voltage is set to a low voltage, for example, the minimum voltage, and the startup is attempted to increase the success rate of startup. The auxiliary electric hydraulic pump is for supplying a constant hydraulic pressure to the hydraulic operating mechanism of the automatic transmission while the engine is stopped.Because the motor current and torque are proportional and the pump axial torque and discharge hydraulic pressure are proportional, After startup, constant current control is performed to maintain the discharge hydraulic pressure constant. The control voltage at the time of startup is not limited to the lowest voltage, but may be any variable voltage in the low voltage region.
【０００９】この出願の発明においては、起動に成功し
なければ、所定の時間間隔で且つ所定回数以下の範囲で
起動処理を繰り返し行うことにより、半導体スイッチ等
の破壊を招かない範囲で起動を図る。所定の時間間隔を
起動処理時間よりも長くしておくことにより、今回の起
動処理と次回の起動処理の間に休憩時間がはさまるの
で、半導体スイッチの温度上昇が抑制され、破壊しにく
くなる。In the invention of this application, if the start-up is not successful, the start-up process is repeated within a predetermined time interval and within a predetermined number of times or less, so that the semiconductor switch or the like can be started up within a range in which it is not destroyed. . By setting the predetermined time interval longer than the startup processing time, the break time is inserted between the startup processing of this time and the startup processing of the next time, so that the temperature rise of the semiconductor switch is suppressed and the semiconductor switch is less likely to be destroyed.
【００１０】[0010]
【発明の実施の形態】図１は、この出願の発明の一実施
形態に係る車両の自動変速機における油圧供給装置の構
成を示すブロック図である。図２は、油圧供給装置の作
用を説明する図である。図３は、図１に示す電子コント
ローラの作用を示すフローチャートである。1 is a block diagram showing a configuration of a hydraulic pressure supply device in an automatic transmission for a vehicle according to an embodiment of the present invention. FIG. 2 is a diagram for explaining the operation of the hydraulic pressure supply device. FIG. 3 is a flowchart showing the operation of the electronic controller shown in FIG.
【００１１】図１において、車両の自動変速機１１は変
速段を完成する油圧作動機構１２と、この油圧作動機構
１２の作動油圧を供給する油圧供給装置１３とを備え
る。油圧供給装置１３は、車両のエンジン（図示省略）
により駆動されてオイルパン１４内の作動油を油圧作動
機構１２へ圧送する主油圧ポンプ１５と、エンジン停止
期間において車両の４２Ｖバッテリー（図示省略）から
供給される電力により作動する電動モータ１６により駆
動されてオイルパン１４内の作動油を油圧作動機構１２
へ圧送する補助電動油圧ポンプ１７とを備える。In FIG. 1, an automatic transmission 11 of a vehicle includes a hydraulic operating mechanism 12 for completing a shift stage, and a hydraulic supply device 13 for supplying operating hydraulic pressure of the hydraulic operating mechanism 12. The hydraulic pressure supply device 13 is a vehicle engine (not shown).
Driven by the main hydraulic pump 15 that is driven by the hydraulic pump 12 to pump the hydraulic oil in the oil pan 14 to the hydraulic operating mechanism 12, and the electric motor 16 that is operated by the electric power supplied from the 42V battery (not shown) of the vehicle during the engine stop period. The hydraulic oil in the oil pan 14 is moved to the hydraulic operating mechanism 12
And an auxiliary electric hydraulic pump 17 for pumping to.
【００１２】主油圧ポンプ１５はギヤポンプによって形
成されており、図２に示すように、エンジンの作動時に
おいて第１レベルＰ１の作動油圧を油圧作動機構１２へ
供給する。補助電動油圧ポンプ１７は、トロコイドポン
プまたはギヤポンプにより形成されており、図２に示す
ように、エンジンの停止期間において第１レベルＰ１よ
り低い第２レベルＰ２の作動油圧を油圧作動機構１２へ
供給する。The main hydraulic pump 15 is formed of a gear pump and, as shown in FIG. 2, supplies a hydraulic pressure of a first level P1 to the hydraulic operating mechanism 12 when the engine is operating. The auxiliary electric hydraulic pump 17 is formed of a trochoid pump or a gear pump, and as shown in FIG. 2, supplies an operating hydraulic pressure of a second level P2 lower than the first level P1 to the hydraulic operating mechanism 12 during an engine stop period. .
【００１３】電動モータ１６は、この出願の発明に従っ
て、三相のセンサレスブラシレスＤＣモータにより形成
されている。このセンサレスブラシレスＤＣモータ１６
を確実に起動させるため、補助油圧ポンプ１７の吐出側
油路１７ａには。油圧作動機構１２側から補助油圧ポン
プ１７側への油圧伝達を阻止する逆止弁１８が介装され
ている。補助電動油圧ポンプ１７のセンサレスブラシレ
スＤＣモータ１６は電子コントローラ１９と電気的に接
続されている。電子コントローラ１９は、各相コイルへ
の通電を切換える半導体スイッチと、各相コイルの逆起
電圧に基づき半導体スイッチの駆動信号を生成するマイ
クロコンピュータ等からなる。The electric motor 16 is formed by a three-phase sensorless brushless DC motor according to the invention of this application. This sensorless brushless DC motor 16
In order to reliably activate the above, the discharge side oil passage 17a of the auxiliary hydraulic pump 17 should be provided. A check valve 18 that prevents hydraulic pressure transmission from the hydraulic actuation mechanism 12 side to the auxiliary hydraulic pump 17 side is interposed. The sensorless brushless DC motor 16 of the auxiliary electric hydraulic pump 17 is electrically connected to the electronic controller 19. The electronic controller 19 is composed of a semiconductor switch that switches energization to each phase coil, a microcomputer that generates a drive signal for the semiconductor switch based on the counter electromotive voltage of each phase coil, and the like.
【００１４】電子制御装置１９は、図３に示すように、
ステップ１０１にて起動要求があるか否かを判定する。
起動要求はエンジン自動停止始動装置からエンジン自動
停止の際に発せられるものである。起動要求があればス
テップ１０２に進み制御電圧を最低電圧に設定する。制
御電圧は１８Ｖ〜４２Ｖの範囲で可変である。次いでス
テップ１０３に進み起動処理を所定時間Ｔｓだけ行った
後、ステップ１０４に進んで起動に成功したか否かを判
定する。起動が成功したか否かはモータ実電流値を所定
電流値と比較することにより判定するものであり、モー
タ実電流値が所定電流値以下であれば起動成功と判定す
る。起動に成功した場合にはステップ１０５に進み定電
流制御を行う。この定電流制御はＰＷＭ制御により行
う。次いでステップ１０６にて停止要求があるか否かを
判定する。この停止要求は、エンジン自動停止始動装置
からエンジン自動始動の際に発せられるものである。停
止要求がなければステップ１０５に戻り定電流制御を継
続するが、停止要求があればステップ１０７にて停止処
理を行った後ステップ１０１に戻る。この停止処理で
は、所定時間経過後に停止させるように処理が行われ
る。The electronic control unit 19 is, as shown in FIG.
In step 101, it is determined whether or not there is a start request.
The start request is issued from the engine automatic stop starter when the engine is automatically stopped. If there is a start request, the process proceeds to step 102 and the control voltage is set to the minimum voltage. The control voltage is variable in the range of 18V to 42V. Next, the routine proceeds to step 103, where after the activation process is performed for a predetermined time Ts, the routine proceeds to step 104, where it is determined whether the activation is successful. Whether or not the start is successful is determined by comparing the motor actual current value with a predetermined current value. If the motor actual current value is equal to or less than the predetermined current value, it is determined that the start is successful. If the activation is successful, the routine proceeds to step 105, where constant current control is performed. This constant current control is performed by PWM control. Next, in step 106, it is determined whether or not there is a stop request. This stop request is issued from the engine automatic stop / start device when the engine is automatically started. If there is no stop request, the process returns to step 105 to continue the constant current control, but if there is a stop request, the stop process is performed in step 107 and then the process returns to step 101. In this stop processing, the processing is performed so as to stop after a predetermined time has elapsed.
【００１５】ステップ１０４の判定結果が起動に成功し
ないであれば、ステップ１０８にて起動処理回数カウン
タの計数値Ｎを（Ｎ−１）に更新し、次いでステップ１
０９にてＮが０であるか否か判定し、そうであればステ
ップ１１０にてフエール処理を行う。このフエール処理
によって例えば警報が発せられる。ステップ１０９の判
定結果がノーであればステップ１１１に進み計時カウン
タの計数値Ｔを（Ｔ＋１）に更新した後ステップ１１２
に進みＴが所定時間Ｔｍを超えたか稲か判定する。Ｔが
Ｔｍを超えていなければステップ１１１に戻るが、Ｔが
Ｔｍを超えたのであればズテップ１０３に進み再び起動
処理を行う。即ち、起動に成功しなければ、所定の時間
間隔（Ｔｓ＋Ｔｍ）で且つ計数値Ｎの初期値以下の範囲
で起動処理が繰り返し行われるものである。If the result of the determination in step 104 is that the startup is not successful, the count value N of the startup processing number counter is updated to (N-1) in step 108, and then step 1
At 09, it is determined whether or not N is 0, and if so, a fail process is performed at step 110. An alarm is issued, for example, by this fail processing. If the determination result in step 109 is NO, the process proceeds to step 111, where the count value T of the clock counter is updated to (T + 1), and then step 112
Then, it is determined whether T exceeds a predetermined time Tm. If T does not exceed Tm, the process returns to step 111. If T exceeds Tm, the process proceeds to step 103 and the activation process is performed again. That is, if the activation is not successful, the activation process is repeatedly performed within a predetermined time interval (Ts + Tm) and within the range equal to or less than the initial value of the count value N.
【００１６】[0016]
【発明の効果】以上に説明したように、この出願の発明
は、車両のエンジンにより駆動されて自動変速機の油圧
作動機構に第１レベルの作動油圧を供給する主油圧ポン
プに対して並列に接続され、エンジンの停止期間におい
てセンサレスブラシレスＤＣモータにより駆動されて油
圧作動機構に前記第１レベルより低い第２レベルの作動
油圧を供給する補助電動油圧ポンプを的確に起動させる
ことができ、補助電動油圧ポンプの小型、軽量、低価格
化を実現することができる。As described above, the invention of this application is in parallel with the main hydraulic pump that is driven by the engine of the vehicle and supplies the hydraulic operating mechanism of the automatic transmission with the first-level hydraulic pressure. An auxiliary electric hydraulic pump that is connected and is driven by a sensorless brushless DC motor to supply an operating hydraulic pressure of a second level lower than the first level to the hydraulic operating mechanism while the engine is stopped can be accurately started. It is possible to realize a small size, light weight, and low price of the hydraulic pump.
【図１】この出願の発明の一実施形態に係る車両の自動
変速機の油圧供給装置の構成を示すブロック図である。FIG. 1 is a block diagram showing a configuration of a hydraulic pressure supply device for an automatic transmission of a vehicle according to an embodiment of the present invention.
【図２】図１に示す油圧供給装置の作用を示す図であ
る。FIG. 2 is a diagram showing an operation of the hydraulic pressure supply device shown in FIG.
【図３】図１に示す電子コントローラの作用を示すフロ
ーチャートである。FIG. 3 is a flowchart showing the operation of the electronic controller shown in FIG.
１１・・・車両の自動変速機 １２・・・油圧作動機構 １３・・・油圧供給装置 １４・・・オイルパン １５・・・主油圧ポンプ １６・・・センサレスブラシレスＤＣモータ １７・・・補助電動油圧ポンプ １８・・・逆止弁 １９・・・電子コントローラ 11 ... Automatic transmission of vehicle 12 ... hydraulic actuation mechanism 13 ... Hydraulic supply device 14 ... Oil pan 15 ... Main hydraulic pump 16 ... Sensorless brushless DC motor 17 ... Auxiliary electric hydraulic pump 18 ... Check valve 19: Electronic controller
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3G093 AA05 AA14 DB20 EB03 EC02 3H089 BB01 DA02 DA07 DA14 GG02 JJ12 JJ13 3J552 NB01 PA61 QB07 5H560 AA10 BB04 CC04 EB07 GG04 HA01 HA07 JJ02 RR10 SS02 UA01 XA12 ─────────────────────────────────────────────────── ─── Continued front page F term (reference) 3G093 AA05 AA14 DB20 EB03 EC02 3H089 BB01 DA02 DA07 DA14 GG02 JJ12 JJ13 3J552 NB01 PA61 QB07 5H560 AA10 BB04 CC04 EB07 GG04 HA01 HA07 JJ02 RR10 SS02 UA01 XA12
Claims (2)
速機の油圧作動機構に第１レベルの作動油圧を供給する
主油圧ポンプに対して並列に接続され、前記エンジンの
停止期間においてセンサレスブラシレスＤＣモータによ
り駆動されて前記油圧作動機構に前記第１レベルより低
い第２レベルの作動油圧を供給する補助電動油圧ポンプ
の制御方法であって、制御電圧を低電圧にして起動処理
を行い、起動に成功しなければ所定の時間間隔で且つ所
定回数以下の範囲で起動処理を繰り返し行い、起動に成
功した後は定電流制御を行うことを特徴とする車両の自
動変速機における補助電動油圧ポンプの制御方法。1. A sensorless brushless DC motor that is connected in parallel to a main hydraulic pump that is driven by an engine of a vehicle and supplies a hydraulic operating mechanism of an automatic transmission with a first-level hydraulic pressure. Is a control method of an auxiliary electric hydraulic pump that is driven by a hydraulic pressure control mechanism to supply a hydraulic pressure of a second level lower than the first level to the hydraulic pressure actuating mechanism. Otherwise, the start-up process is repeated at a predetermined time interval and within a predetermined number of times or less, and constant current control is performed after the start-up is successful. A method for controlling an auxiliary electric hydraulic pump in an automatic transmission of a vehicle. .
ける補助電動油圧ポンプの制御方法であって、前記所定
の時間間隔が前記起動処理の時間よりも長いことを特徴
とする車両の自動変速機における補助電動油圧ポンプの
制御方法。2. The method for controlling an auxiliary electric hydraulic pump in an automatic transmission for a vehicle according to claim 1, wherein the predetermined time interval is longer than the start processing time. A method for controlling an auxiliary electric hydraulic pump in a transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001188824A JP2003009581A (en) | 2001-06-21 | 2001-06-21 | Control method for auxiliary electro-hydraulic pump in automatic transmission for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001188824A JP2003009581A (en) | 2001-06-21 | 2001-06-21 | Control method for auxiliary electro-hydraulic pump in automatic transmission for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003009581A true JP2003009581A (en) | 2003-01-10 |
Family
ID=19027847
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001188824A Pending JP2003009581A (en) | 2001-06-21 | 2001-06-21 | Control method for auxiliary electro-hydraulic pump in automatic transmission for vehicle |
Country Status (1)
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|---|---|
| JP (1) | JP2003009581A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006161838A (en) * | 2004-12-02 | 2006-06-22 | Honda Motor Co Ltd | Hydraulic oil feeder |
| JP2006258079A (en) * | 2005-03-18 | 2006-09-28 | Aisin Seiki Co Ltd | Electric liquid pump, its control method and control device |
| EP2148422A1 (en) * | 2008-07-22 | 2010-01-27 | Pratt & Whitney Canada Corp. | Motor driving system and method for starting a motor |
| JP2011038601A (en) * | 2009-08-12 | 2011-02-24 | Hitachi Car Eng Co Ltd | Oil pressure supply device |
| JP2012013203A (en) * | 2010-07-05 | 2012-01-19 | Kobelco Cranes Co Ltd | Driving device of working machine |
| KR20160076705A (en) * | 2014-12-23 | 2016-07-01 | 군산대학교산학협력단 | An apparatus and a method of submerged motor pump with a sub-motor |
| CN109681495A (en) * | 2018-12-19 | 2019-04-26 | 中国石油化工股份有限公司 | A kind of electro-hydraulic actuator control system |
| JP2022521045A (en) * | 2019-02-21 | 2022-04-05 | ルノー エス．ア．エス． | How to control the start of the oil pump |
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|---|---|---|---|---|
| JPS62230400A (en) * | 1986-03-28 | 1987-10-09 | Toshiba Corp | Controlling device for commutatorless motor-generator |
| JP2001041067A (en) * | 1999-07-26 | 2001-02-13 | Nissan Motor Co Ltd | Vehicle |
-
2001
- 2001-06-21 JP JP2001188824A patent/JP2003009581A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62230400A (en) * | 1986-03-28 | 1987-10-09 | Toshiba Corp | Controlling device for commutatorless motor-generator |
| JP2001041067A (en) * | 1999-07-26 | 2001-02-13 | Nissan Motor Co Ltd | Vehicle |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006161838A (en) * | 2004-12-02 | 2006-06-22 | Honda Motor Co Ltd | Hydraulic oil feeder |
| US7779958B2 (en) | 2004-12-02 | 2010-08-24 | Honda Motor Co., Ltd. | Hydraulic pressurizer system |
| JP2006258079A (en) * | 2005-03-18 | 2006-09-28 | Aisin Seiki Co Ltd | Electric liquid pump, its control method and control device |
| EP2148422A1 (en) * | 2008-07-22 | 2010-01-27 | Pratt & Whitney Canada Corp. | Motor driving system and method for starting a motor |
| US7965052B2 (en) | 2008-07-22 | 2011-06-21 | Pratt & Whitney Canada Corp. | Motor driving system and method for starting a motor |
| JP2011038601A (en) * | 2009-08-12 | 2011-02-24 | Hitachi Car Eng Co Ltd | Oil pressure supply device |
| JP2012013203A (en) * | 2010-07-05 | 2012-01-19 | Kobelco Cranes Co Ltd | Driving device of working machine |
| KR20160076705A (en) * | 2014-12-23 | 2016-07-01 | 군산대학교산학협력단 | An apparatus and a method of submerged motor pump with a sub-motor |
| KR101671957B1 (en) * | 2014-12-23 | 2016-11-03 | 군산대학교산학협력단 | An apparatus and a method of submerged motor pump with a sub-motor |
| CN109681495A (en) * | 2018-12-19 | 2019-04-26 | 中国石油化工股份有限公司 | A kind of electro-hydraulic actuator control system |
| JP2022521045A (en) * | 2019-02-21 | 2022-04-05 | ルノー エス．ア．エス． | How to control the start of the oil pump |
| JP7361780B2 (en) | 2019-02-21 | 2023-10-16 | ルノー エス．ア．エス． | Method for controlling oil pump starting |
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