JP2002310272A - Hydraulic supply system in automatic transmission for vehicle - Google Patents
Hydraulic supply system in automatic transmission for vehicleInfo
- Publication number
- JP2002310272A JP2002310272A JP2001116037A JP2001116037A JP2002310272A JP 2002310272 A JP2002310272 A JP 2002310272A JP 2001116037 A JP2001116037 A JP 2001116037A JP 2001116037 A JP2001116037 A JP 2001116037A JP 2002310272 A JP2002310272 A JP 2002310272A
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- hydraulic pump
- level
- motor
- auxiliary
- 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
Links
Landscapes
- Control Of Transmission Device (AREA)
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
動変速機における油圧供給装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic pressure supply device for 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, the engine is automatically stopped under predetermined stop conditions, and then the engine is restarted under predetermined start conditions to save fuel. And an automatic engine stop / start device for improving exhaust emission.
However, in a vehicle equipped with a widely-used general automatic transmission, a hydraulic pump that supplies a working oil pressure of a hydraulic operating mechanism for completing a gear position is driven by an engine. Therefore, when the engine automatically stops, the operating oil pressure of the hydraulic operating mechanism decreases,
The automatic transmission enters a neutral state. When the engine is automatically restarted in this state, the operating oil pressure of the hydraulic operating mechanism rises and the automatic transmission is restored to the state immediately before the engine stopped, and at this time, a shock occurs because the engine speed is high. appear.
【０００３】そこで、電動モータにより駆動する補助油
圧ポンプを設置し、エンジンの停止期間においては補助
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８−１４０７６号
公報参照）。Therefore, it has been proposed to install an auxiliary hydraulic pump driven by an electric motor and supply hydraulic pressure to a hydraulic operating mechanism by the auxiliary hydraulic pump during the stoppage of the engine (for example, Japanese Patent Application Laid-Open No. 8-14076). Gazette).
【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、補助油圧ポンプを駆動するモータをセンサ
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 required to be small, light, and inexpensive. In order to satisfy such demands, it is effective to use a sensorless brushless DC motor as a motor for driving the auxiliary 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, a sensorless brushless DC
Since the motor is configured to estimate the rotational position of the rotor from the induced voltage generated in the coil according to the rotational speed of the rotor and switch the energization, there is a problem that the startability is poor. In a configuration where the operating oil pressure of the hydraulic operating mechanism of the automatic transmission acts as a back pressure on the discharge side of the auxiliary hydraulic pump, the oil pressure of the hydraulic operating mechanism does not immediately decrease even if the engine is automatically stopped. If the sensorless brushless DC motor is started in response to the stop, the load torque that can overcome the back pressure of the auxiliary hydraulic pump cannot be generated, and the rotation speed required to generate the induced voltage that can accurately estimate the rotation position of the rotor Is not obtained, and it is therefore fully expected that it cannot be started. If the energization is continued with the start failure, a large current continues to flow through the sensorless brushless DC motor, and the motor and the semiconductor switch are broken.
【０００６】この出願の発明は、補助油圧ポンプをセン
サレスブラシレスＤＣモータにより駆動することにより
小型、軽量、低価格とするとともに、センサレスブラシ
レスＤＣモータ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。The invention of this application is to reduce the size, weight and cost by driving an auxiliary hydraulic pump by a sensorless brushless DC motor, and to protect the sensorless brushless DC motor from destruction by being able to start accurately. With the goal.
【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と、前記エンジンの停止期間にお
いて電動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
補助油圧ポンプとを備えた車両の自動変速機における油
圧供給装置において、前記電動モータがセンサレスブラ
シレスＤＣモータであり、前記補助ポンプの吐出側油路
には前記油圧作動機構側から前記補助油圧ポンプ側への
油圧伝達を阻止する逆止弁が介装され、且つ、前記補助
ポンプの前記吐出側油路の前記逆止弁と前記補助油圧ポ
ンプとの間には前記第１レベルより低いが前記第２レベ
ルより高い第３レベルの油圧で開くリリーフ弁が接続さ
れていることを特徴とする車両の自動変速機における油
圧供給装置である。According to the present invention, 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 is provided. Hydraulic supply in an automatic transmission of a vehicle comprising a pump and an auxiliary hydraulic pump driven by an electric motor during an engine stop period to supply the hydraulic operating mechanism with a second level operating hydraulic pressure lower than the first level In the device, the electric motor is a sensorless brushless DC motor, and a check valve for preventing transmission of hydraulic pressure from the hydraulic operating mechanism side to the auxiliary hydraulic pump side is interposed in a discharge-side oil passage of the auxiliary pump, A third level lower than the first level but higher than the second level is provided between the check valve and the auxiliary hydraulic pump in the discharge-side oil passage of the auxiliary pump. A hydraulic pressure supply device in an automatic transmission of a vehicle, characterized in that the relief valve be opened by Le hydraulic is connected.
【０００８】この油圧供給装置は、補助油圧ポンプを駆
動する電動モータがセンサレスブラシレスＤＣモータで
あるため、小型、軽量、低価格である。そして、補助油
圧ポンプの吐出側油路に介装された逆止弁およびこの逆
止弁と補助油圧ポンプとの間に接続されたリリーフ弁に
より、補助油圧ポンプの吐出側に作用する背圧が第３レ
ベル以下に制限されるため、エンジンの自動停止直後に
センサレスブラシレスＤＣモータを起動しても確実に起
動し、同モータの破壊が回避される。[0008] Since the electric motor for driving the auxiliary hydraulic pump is a sensorless brushless DC motor, this hydraulic supply device is small, light, and inexpensive. The back pressure acting on the discharge side of the auxiliary hydraulic pump is controlled by a check valve interposed in the discharge-side oil passage of the auxiliary hydraulic pump and a relief valve connected between the check valve and the auxiliary hydraulic pump. Since the sensor is limited to the third level or less, even if the sensorless brushless DC motor is started immediately after the automatic stop of the engine, the sensorless start is surely started, and the motor is prevented from being destroyed.
【０００９】[0009]
【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。FIG. 1 is a block diagram showing a configuration of a hydraulic supply device in an automatic transmission of a vehicle according to an embodiment of the present invention. FIG. 2 is a diagram illustrating the operation of the hydraulic pressure supply device.
【００１０】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
する補助油圧ポンプ１７とを備える。Referring to FIG. 1, an automatic transmission 11 of a vehicle includes a hydraulic operating mechanism 12 for completing a gear position and a hydraulic supply device 13 for supplying an operating hydraulic pressure of the hydraulic operating mechanism 12. The hydraulic supply device 13 is a vehicle engine (not shown).
And a main hydraulic pump 15 for pumping hydraulic oil in an oil pan 14 to the hydraulic operating mechanism 12 and an electric motor 16 operated by electric power supplied from a battery (not shown) of the vehicle during an engine stop period. And an auxiliary hydraulic pump 17 for pumping hydraulic oil in the oil pan 14 to the hydraulic operating mechanism 12.
【００１１】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 by a gear pump. As shown in FIG. 2, the main hydraulic pump 15 supplies a first level P1 of operating hydraulic pressure to the hydraulic operating mechanism 12 when the engine is operating. The auxiliary hydraulic pump 17 is formed by a trochoid pump or a gear pump, and supplies an operating oil pressure at a second level P2 lower than the first level P1 to the hydraulic operating mechanism 12 during an engine stop period, as shown in FIG.
【００１２】電動モータ１６は、この出願の発明に従っ
て、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１
７ａ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。そして、吐出側油路１７ａの逆止弁１８と補助油圧
ポンプ１７との間には、第１レベルＰ１より低いが第２
レベルＰ２より高い第３レベルＰ３の油圧で開くリリ−
フ弁１９が接続されている。補助油圧ポンプ１７の吐出
側油路１７ａに介装された逆止弁１８およびこの逆止弁
１８と補助油圧ポンプ１７との間に接続されたリリーフ
弁１９により、補助油圧ポンプ１７の吐出側に作用する
背圧が第３レベルＰ３以下に制限されるため、エンジン
の自動停止直後にセンサレスブラシレスＤＣモータ１６
を起動しても確実に起動し、同モータの破壊が回避され
る。The electric motor 16 is formed by a sensorless brushless DC motor according to the invention of this application. In order to reliably start the sensorless brushless DC motor 16, the discharge-side oil passage 1 of the auxiliary hydraulic pump 17 is used.
7a. Auxiliary hydraulic pump 17 from hydraulic operating mechanism 12 side
A check valve 18 for preventing hydraulic pressure transmission to the side is interposed. Further, between the check valve 18 of the discharge-side oil passage 17a and the auxiliary hydraulic pump 17, the second level lower than the first level P1,
Release with hydraulic pressure of third level P3 higher than level P2
The valve 19 is connected. A check valve 18 interposed in the discharge-side oil passage 17a of the auxiliary hydraulic pump 17 and a relief valve 19 connected between the check valve 18 and the auxiliary hydraulic pump 17 provide a discharge side of the auxiliary hydraulic pump 17 Since the acting back pressure is limited to the third level P3 or less, the sensorless brushless DC motor 16
Is started even if it is started, and the destruction of the motor is avoided.
【００１３】[0013]
【発明の効果】以上に説明したように、この出願の発明
に係る車両に自動変速機における油圧供給装置は、補助
油圧ポンプを駆動する電動モータがセンサレスブラシレ
スＤＣモータであるため、小型、軽量、低価格である。
そして、補助油圧ポンプの吐出側油路に介装された逆止
弁およびこの逆止弁と補助油圧ポンプとの間に接続され
たリリーフ弁により、補助油圧ポンプの吐出側に作用す
る背圧が所定レベル（前記第３レベル）以下に制限され
るため、エンジンの自動停止直後にセンサレスブラシレ
スＤＣモータを起動しても確実に起動し、同モータの破
壊が回避される。As described above, the hydraulic supply device for an automatic transmission of a vehicle according to the present invention is small in size and light in weight because the electric motor for driving the auxiliary hydraulic pump is a sensorless brushless DC motor. It is low price.
The back pressure acting on the discharge side of the auxiliary hydraulic pump is controlled by a check valve interposed in the discharge-side oil passage of the auxiliary hydraulic pump and a relief valve connected between the check valve and the auxiliary hydraulic pump. Since the sensorless brushless DC motor is started immediately after the automatic stop of the engine, the motor is surely started even if the engine is automatically stopped, and the destruction of the motor is avoided.
【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.
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・・・補助油圧ポンプ １８・・・逆止弁 １９・・・リリーフ弁 DESCRIPTION OF SYMBOLS 11 ... Automatic transmission of vehicles 12 ... Hydraulic actuating mechanism 13 ... Hydraulic supply device 14 ... Oil pan 15 ... Main hydraulic pump 16 ... Sensorless brushless DC motor 17 ... Auxiliary hydraulic Pump 18 Check valve 19 Relief valve
Claims (1)
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
主油圧ポンプと、前記エンジンの停止期間において電動
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油圧
ポンプとを備えた車両の自動変速機における油圧供給装
置において、前記電動モータがセンサレスブラシレスＤ
Ｃモータであり、前記補助ポンプの吐出側油路には前記
油圧作動機構側から前記補助油圧ポンプ側への油圧伝達
を阻止する逆止弁が介装され、且つ、前記補助ポンプの
前記吐出側油路の前記逆止弁と前記補助油圧ポンプとの
間には前記第１レベルより低いが前記第２レベルより高
い第３レベルの油圧で開くリリーフ弁が接続されている
ことを特徴とする車両の自動変速機における油圧供給装
置。1. A main hydraulic pump driven by an engine of a vehicle to supply a first-level hydraulic pressure to a hydraulic operating mechanism of an automatic transmission; and a hydraulic operating mechanism driven by an electric motor during a stop period of the engine. And an auxiliary hydraulic pump for supplying an operating hydraulic pressure of a second level lower than the first level to the automatic transmission of the vehicle.
A C-motor, a check valve for preventing transmission of hydraulic pressure from the hydraulic operating mechanism side to the auxiliary hydraulic pump side is interposed in a discharge-side oil passage of the auxiliary pump; A vehicle, wherein a relief valve that opens at a third level hydraulic pressure lower than the first level but higher than the second level is connected between the check valve and the auxiliary hydraulic pump in an oil passage. Hydraulic supply device for automatic transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001116037A JP2002310272A (en) | 2001-04-13 | 2001-04-13 | Hydraulic supply system in automatic transmission for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001116037A JP2002310272A (en) | 2001-04-13 | 2001-04-13 | Hydraulic supply system in automatic transmission for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002310272A true JP2002310272A (en) | 2002-10-23 |
Family
ID=18966840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001116037A Pending JP2002310272A (en) | 2001-04-13 | 2001-04-13 | Hydraulic supply system in automatic transmission for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002310272A (en) |
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| JP2006161853A (en) * | 2004-12-02 | 2006-06-22 | Honda Motor Co Ltd | Hydraulic feeder |
| JP2006233867A (en) * | 2005-02-24 | 2006-09-07 | Aisin Seiki Co Ltd | Electric pump and fluid-feeding device |
| JP2009052638A (en) * | 2007-08-27 | 2009-03-12 | Aisin Aw Co Ltd | Hydraulic fluid supply device in automatic transmission |
| WO2010106833A1 (en) * | 2009-03-17 | 2010-09-23 | アイシン・エィ・ダブリュ株式会社 | Control device for automatic transmission |
| DE102009046369A1 (en) * | 2009-11-04 | 2011-05-05 | Zf Friedrichshafen Ag | Device for preventing return of oil through fixed displacement pump of transmission of parallel hybrid vehicle, has free-wheel integrated in drive of pump, and torque emerging on pressure side by hydraulic pressure supported at housing |
| WO2012093677A1 (en) * | 2011-01-04 | 2012-07-12 | 株式会社ジェイテクト | Electric pump device |
| WO2014070893A1 (en) | 2012-10-31 | 2014-05-08 | Long Charles F | Engine-off auxiliary hydraulic pressurization system and method for a transmission |
| JP2015086883A (en) * | 2013-10-28 | 2015-05-07 | トヨタ自動車株式会社 | Hydraulic control device |
| JP2022039049A (en) * | 2020-08-27 | 2022-03-10 | トヨタ自動車株式会社 | On-vehicle controller |
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| JP2001099282A (en) * | 1999-07-29 | 2001-04-10 | Honda Motor Co Ltd | Hydraulic circuit for automatic transmission of automatic engine stop vehicle, and hydraulic control device |
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| JPH11287316A (en) * | 1998-04-03 | 1999-10-19 | Aisin Aw Co Ltd | Hydraulic pressure supplying device |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4630651B2 (en) * | 2004-12-02 | 2011-02-09 | 本田技研工業株式会社 | Hydraulic supply device |
| JP2006161853A (en) * | 2004-12-02 | 2006-06-22 | Honda Motor Co Ltd | Hydraulic feeder |
| JP2006233867A (en) * | 2005-02-24 | 2006-09-07 | Aisin Seiki Co Ltd | Electric pump and fluid-feeding device |
| EP1705378A2 (en) | 2005-02-24 | 2006-09-27 | Aisin Seiki Kabushiki Kaisha | Electric pump with pressure control |
| EP1705378A3 (en) * | 2005-02-24 | 2008-03-12 | Aisin Seiki Kabushiki Kaisha | Electric pump with pressure control |
| JP2009052638A (en) * | 2007-08-27 | 2009-03-12 | Aisin Aw Co Ltd | Hydraulic fluid supply device in automatic transmission |
| DE112010000034T5 (en) | 2009-03-17 | 2012-07-26 | Aisin Aw Co., Ltd. | Control device for an automatic transmission |
| JP2010216583A (en) * | 2009-03-17 | 2010-09-30 | Aisin Aw Co Ltd | Control device for automatic transmission |
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| DE102009046369A1 (en) * | 2009-11-04 | 2011-05-05 | Zf Friedrichshafen Ag | Device for preventing return of oil through fixed displacement pump of transmission of parallel hybrid vehicle, has free-wheel integrated in drive of pump, and torque emerging on pressure side by hydraulic pressure supported at housing |
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| EP2914881A4 (en) * | 2012-10-31 | 2016-08-17 | Allison Transm Inc | Engine-off auxiliary hydraulic pressurization system and method for a transmission |
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