JP6244772B2 - Hybrid vehicle drive device - Google Patents

Hybrid vehicle drive device Download PDF

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JP6244772B2
JP6244772B2 JP2013196682A JP2013196682A JP6244772B2 JP 6244772 B2 JP6244772 B2 JP 6244772B2 JP 2013196682 A JP2013196682 A JP 2013196682A JP 2013196682 A JP2013196682 A JP 2013196682A JP 6244772 B2 JP6244772 B2 JP 6244772B2
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oil
disposed
drive device
hybrid vehicle
rotor
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JP2015063161A (en
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伸夫 中林
伸夫 中林
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Suzuki Motor Co Ltd
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Suzuki Motor Co Ltd
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Priority to CN201410457771.3A priority patent/CN104455353B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F16H57/0436—Pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/40—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the assembly or relative disposition of components
    • B60K6/405—Housings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/44—Series-parallel type
    • B60K6/445—Differential gearing distribution type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F16H57/0435—Pressure control for supplying lubricant; Circuits or valves therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Description

本発明はハイブリッド車両用駆動装置に関し、さらに詳しくは、潤滑油回路にリリーフバルブを備えたハイブリッド車両用駆動装置に関する。   The present invention relates to a hybrid vehicle drive device, and more particularly, to a hybrid vehicle drive device including a relief valve in a lubricating oil circuit.

従来、ハイブリッド車両用駆動装置としては、リリーフバルブを備えたものある。このようなハイブリッド車両用駆動装置では、リリーフバルブでリリーフしたオイルのリターン流路をオイルポンプの吸入回路側へ戻してオイルポンプの吸入抵抗低減を図ったものが開示されている（例えば、特許文献１参照）。   Conventionally, a drive device for a hybrid vehicle includes a relief valve. In such a hybrid vehicle drive device, there has been disclosed a device for reducing the oil pump suction resistance by returning the oil return flow path relieved by the relief valve to the oil pump suction circuit side (for example, Patent Documents). 1).

特開２０１１−２０８６７９号公報JP 2011-208679 A

上述のハイブリッド車両用駆動装置では、オイルポンプの吸入抵抗の低減を図っているものの、リリーフしたオイルによる潤滑、冷却は行っていない。ハイブリッド車両用駆動装置において、高速走行時は、エンジン回転、モータジェネレータ回転がともに上昇する。モータジェネレータの回転上昇とともに、モータジェネレータを構成するモータロータのベアリングの必要潤滑油量、モータロータの必要冷却油量が増加する。このため、ハイブリッド車両用駆動装置では、潤滑用のオイルの供給や冷却用のオイルの供給のために、別途、油路が必要であった。   In the hybrid vehicle driving device described above, although the suction resistance of the oil pump is reduced, lubrication and cooling with the relief oil are not performed. In the hybrid vehicle drive device, during high-speed travel, both engine rotation and motor generator rotation increase. As the rotation of the motor generator increases, the required amount of lubricating oil in the bearings of the motor rotor and the required amount of cooling oil in the motor rotor that constitute the motor generator increase. For this reason, in the hybrid vehicle drive device, an oil path is separately required for supplying lubricating oil and cooling oil.

そこで、本発明は、上記の課題に鑑みてなされたものであって、ハイブリッド車両用駆動装置を簡素な構造としつつ、モータジェネレータの冷却性を向上させることを目的とする。   Therefore, the present invention has been made in view of the above-described problems, and an object of the present invention is to improve the cooling performance of a motor generator while making the hybrid vehicle drive device have a simple structure.

上述した課題を解決し目的を達成するために、本発明の態様は、エンジンと、ハウジング内に配置され、かつエンジンの出力軸に連結される入力軸と、ハウジング内に配置され、かつ入力軸と同軸に配置されるモータジェネレータと、このモータジェネレータの軸方向端部と隣設する位置に配置される上記ハウジングの仕切り壁と、仕切り壁に配置され、入力軸によって駆動されるオイルポンプと、オイルポンプから余剰のオイルを排出するリリーフバルブと、を備えるハイブリッド車両用駆動装置において、モータジェネレータは、ロータ軸と、このロータ軸の外側に連結されるモータロータと、を有し、仕切り壁は、モータロータの内側空間内に挿入されるボス部を有し、ロータ軸を回転自在にボス部に支持する軸受がモータロータの内側空間内に配置され、ボス部内にリリーフバルブが配置され、当該リリーフバルブの排油孔をモータロータの内側空間内で上向きに開口させたことを特徴とする。 In order to solve the above-mentioned problems and achieve the object, an aspect of the present invention includes an engine, an input shaft disposed in the housing and connected to the output shaft of the engine, the input shaft disposed in the housing, A motor generator disposed coaxially with the motor generator, a partition wall of the housing disposed at a position adjacent to the axial end of the motor generator, an oil pump disposed on the partition wall and driven by the input shaft, In a hybrid vehicle drive device comprising a relief valve that discharges excess oil from an oil pump, the motor generator has a rotor shaft and a motor rotor coupled to the outside of the rotor shaft, and the partition wall is It has a boss portion which is inserted inside space of the motor rotor, among bearings of the motor rotor to be supported rotatably boss rotor shaft Disposed in the space, the relief valve is disposed in the boss portion, characterized in that the oil discharge hole of the relief valve was opened upward in the inner space of the motor rotor.

上記態様としては、リリーフバルブは、ボール弁と、コイルスプリングと、これら両者を内部に収納する円柱状のスライド穴と、を有し、円柱状のスライド穴における端部が軸受と対峙するよう前記ボス部に配置されていることが好ましい。
また、上記態様としては、排油孔は、その上流端より下流端が入力軸の軸方向で軸受側に位置するように傾斜されていることが好ましい。 In the above aspect, the relief valve includes a ball valve, a coil spring, and a cylindrical slide hole that accommodates both of them, and the end of the cylindrical slide hole faces the bearing. It is preferable that it is arrange | positioned at the boss | hub part .
Moreover, as a said aspect, it is preferable that the oil drain hole is inclined so that the downstream end may be located on the bearing side in the axial direction of the input shaft.

本発明によれば、ハイブリッド車両用駆動装置を簡素な構造としつつ、モータジェネレータの冷却性を向上できる。   ADVANTAGE OF THE INVENTION According to this invention, the cooling property of a motor generator can be improved, making a hybrid vehicle drive device simple structure.

図１は、本発明の実施の形態に係るハイブリッド車両用駆動装置の構成を示すスケルトン図である。FIG. 1 is a skeleton diagram showing a configuration of a hybrid vehicle drive device according to an embodiment of the present invention. 図２は、本発明の実施の形態に係るハイブリッド車両用駆動装置の要部断面図である。FIG. 2 is a cross-sectional view of a main part of the hybrid vehicle drive device according to the embodiment of the present invention. 図３は、図２における矢印Ａ方向から見た状態を示す要部側面図である。FIG. 3 is a side view of the main part showing a state seen from the direction of arrow A in FIG. 図４は、図３のIV−IV断面図である。4 is a cross-sectional view taken along the line IV-IV in FIG.

以下に、本発明の実施の形態に係るハイブリッド車両用駆動装置の詳細を図面に基づいて説明する。   Below, the detail of the drive device for hybrid vehicles which concerns on embodiment of this invention is demonstrated based on drawing.

（ハイブリッド車両用駆動装置の構成）
図１に示すように、本実施の形態に係るハイブリッド車両用駆動装置１は、エンジン２と、装置本体３と、を備えている。装置本体３は、車軸４を介して車輪５を回転駆動可能に接続されている。 (Configuration of drive device for hybrid vehicle)
As shown in FIG. 1, the hybrid vehicle drive device 1 according to the present embodiment includes an engine 2 and a device main body 3. The apparatus main body 3 is connected via a wheel shaft 4 so that the wheels 5 can be rotationally driven.

図１に示すように、装置本体３はハウジング６内に、第１モータジェネレータ７と、第２モータジェネレータ８と、複合遊星歯車機構９と、オイルポンプ１０と、複合遊星歯車機構９に減速ギヤ１１を介して接続されるディファレンシャル装置１２と、を備えている。複合遊星歯車機構９は、第１遊星歯車機構１３と、第２遊星歯車機構１４と、を備えている。エンジン２の出力軸２Ａは、ハウジング６内にワンウェイクラッチ２２を介して回転自在に支持された入力軸１５に回転伝達可能に連結されている。   As shown in FIG. 1, the apparatus main body 3 includes a first motor generator 7, a second motor generator 8, a compound planetary gear mechanism 9, an oil pump 10, and a compound planetary gear mechanism 9 in a housing 6. 11 and a differential device 12 connected via the terminal 11. The compound planetary gear mechanism 9 includes a first planetary gear mechanism 13 and a second planetary gear mechanism 14. The output shaft 2A of the engine 2 is connected to an input shaft 15 rotatably supported in the housing 6 via a one-way clutch 22 so as to be able to transmit rotation.

第１遊星歯車機構１３は、サンギヤ１６と、キャリア１７と、リングギヤ１８と、を備えている。第２遊星歯車機構１４は、サンギヤ１９と、キャリア２０と、リングギヤ２１と、を備えている。第１遊星歯車機構１３のキャリア１７は、入力軸１５に連結されている。また、サンギヤ１６は、第１モータジェネレータ７の回転軸７Ａに固定されている。   The first planetary gear mechanism 13 includes a sun gear 16, a carrier 17, and a ring gear 18. The second planetary gear mechanism 14 includes a sun gear 19, a carrier 20, and a ring gear 21. The carrier 17 of the first planetary gear mechanism 13 is connected to the input shaft 15. The sun gear 16 is fixed to the rotating shaft 7A of the first motor generator 7.

第２遊星歯車機構１４のサンギヤ１９は、入力軸１５に同軸的に固定されている。第２遊星歯車機構１４のリングギヤ２１は、第２モータジェネレータ８に連結されている。第１遊星歯車機構１３のリングギヤ１８と第２遊星歯車機構１４のキャリア２０とには、出力ギヤ１８Ａが設けられている。この出力ギヤ１８Ａは、減速ギヤ１１を介してディファレンシャル装置１２に接続されるようになっている。このような構成により、ハイブリッド車両用駆動装置１は、エンジン２からの動力と、第１モータジェネレータ７からの動力と、第２モータジェネレータ８からの動力と、が複合遊星歯車機構９を介して出力されるようになっている。   The sun gear 19 of the second planetary gear mechanism 14 is coaxially fixed to the input shaft 15. The ring gear 21 of the second planetary gear mechanism 14 is connected to the second motor generator 8. The ring gear 18 of the first planetary gear mechanism 13 and the carrier 20 of the second planetary gear mechanism 14 are provided with an output gear 18A. The output gear 18A is connected to the differential device 12 through the reduction gear 11. With such a configuration, the hybrid vehicle drive device 1 allows the power from the engine 2, the power from the first motor generator 7, and the power from the second motor generator 8 to pass through the complex planetary gear mechanism 9. It is output.

図１に示すように、入力軸１５の先端部は、オイルポンプ１０側に接続されている。オイルポンプ１０は、入力軸１５によって駆動されるようになっている。オイルポンプ１０は、第２モータジェネレータ８の軸方向端部と隣接する位置に配置される仕切り壁６Ａに配置されている。この仕切り壁６Ａは、ハウジング６におけるエンジン２と反対側の壁である。   As shown in FIG. 1, the tip of the input shaft 15 is connected to the oil pump 10 side. The oil pump 10 is driven by the input shaft 15. Oil pump 10 is disposed on partition wall 6 </ b> A that is disposed at a position adjacent to the axial end of second motor generator 8. The partition wall 6A is a wall on the opposite side of the housing 6 from the engine 2.

図２は、入力軸１５の中心軸に沿って装置本体３を上下方向の面で切断した状態を示す断面図である。オイルポンプ１０は、仕切り壁６Ａと、オイルポンプカバー２４と、入力軸１５の先端部が同軸的に固定された歯車状のインナロータ２５と、インナロータ２５よりも歯数の多いアウタロータ２６と、を備えている。インナロータ２５とアウタロータ２６とは、仕切り壁６Ａの外側面に形成された円形の凹部６Ｂ内に配置されている。なお、入力軸１５内には、軸方向に沿って油路１５Ａが形成されている。   FIG. 2 is a cross-sectional view showing a state in which the apparatus main body 3 is cut along the vertical axis along the central axis of the input shaft 15. The oil pump 10 includes a partition wall 6 </ b> A, an oil pump cover 24, a gear-shaped inner rotor 25 in which the tip end of the input shaft 15 is coaxially fixed, and an outer rotor 26 having more teeth than the inner rotor 25. ing. The inner rotor 25 and the outer rotor 26 are disposed in a circular recess 6B formed on the outer surface of the partition wall 6A. An oil passage 15A is formed in the input shaft 15 along the axial direction.

図３は、オイルポンプカバー２４を取り外した状態を示し、図２において矢印Ａ方向から見た側面図である。図４は、オイルポンプカバー２４を装着した状態を示し、図３におけるIV−IV断面に相当する断面図である。このオイルポンプ１０は、トロコイド式の容積型ポンプである。入力軸１５が回転するとインナロータ２５が回転する。インナロータ２５が回転すると、このインナロータ２５の外周に噛み合うアウタロータ２６も同期しながら回転して、インナロータ２５の外周面とアウタロータ２６の内周面との間に形成される間隙Ｓが回転移動するように変化する。このため、間隙Ｓ内に供給されるオイルが押し出されるようになっている。   FIG. 3 is a side view of the oil pump cover 24 with the oil pump cover 24 removed, as viewed from the direction of arrow A in FIG. 4 shows a state where the oil pump cover 24 is mounted, and is a cross-sectional view corresponding to a cross section taken along line IV-IV in FIG. The oil pump 10 is a trochoidal positive displacement pump. When the input shaft 15 rotates, the inner rotor 25 rotates. When the inner rotor 25 rotates, the outer rotor 26 that meshes with the outer periphery of the inner rotor 25 also rotates in synchronization, so that the gap S formed between the outer peripheral surface of the inner rotor 25 and the inner peripheral surface of the outer rotor 26 rotates. Change. For this reason, the oil supplied into the gap S is pushed out.

図４に示すように、オイルポンプカバー２４には、間隙Ｓ内からオイルが押し出される位置に入力軸１５と平行な第１吐出通路２４Ａが形成されている。また、オイルポンプカバー２４には、第１吐出通路２４Ａに連通する第２吐出通路２４Ｂが形成されている。そして、オイルポンプカバー２４には、第２吐出通路２４Ｂに連通し、入力軸１５の油路１５Ａと連通する第３吐出通路２４Ｃと入力軸１５と平行な第４吐出通路２４Ｄとが形成されている。   As shown in FIG. 4, the oil pump cover 24 is formed with a first discharge passage 24 </ b> A parallel to the input shaft 15 at a position where oil is pushed out from the gap S. Further, the oil pump cover 24 is formed with a second discharge passage 24B communicating with the first discharge passage 24A. The oil pump cover 24 is formed with a third discharge passage 24C that communicates with the second discharge passage 24B, communicates with the oil passage 15A of the input shaft 15, and a fourth discharge passage 24D that is parallel to the input shaft 15. Yes.

図２および図４に示すように、仕切り壁６Ａの内側面には、入力軸１５を取り囲むようにハウジング６の内側へ向けて突出する筒形状のボス部２３が形成されている。このボス部２３には、上記第４吐出通路２４Ｄと連通するようにリリーフバルブ２７が設けられている。リリーフバルブ２７は、オイルポンプ１０から余剰のオイルを排出させる機能を有する。なお、第２モータジェネレータ８は、ハウジング６側に固定された円筒状のモータステータ８Ｓと、このモータステータ８Ｓの内側に配置され、かつモータステータ８Ｓと同軸的に回転自在に設けられたモータロータ８Ｒと、を備えている。図２に示すように、上記ボス部２３は、仕切り壁６Ａの内側面からモータロータ８Ｒの内側空間２８に向けて突出している。ボス部２３の先端部の内周面には、軸受としてのベアリング２９を介してロータ軸３０が回転自在に支持されている。図２に示すように、ロータ軸３０には、入力軸１５が同軸的に貫通して配置されている。   As shown in FIGS. 2 and 4, a cylindrical boss portion 23 is formed on the inner side surface of the partition wall 6 </ b> A so as to protrude toward the inside of the housing 6 so as to surround the input shaft 15. The boss portion 23 is provided with a relief valve 27 so as to communicate with the fourth discharge passage 24D. The relief valve 27 has a function of discharging excess oil from the oil pump 10. The second motor generator 8 includes a cylindrical motor stator 8S fixed on the housing 6 side, and a motor rotor 8R disposed inside the motor stator 8S and provided coaxially and rotatably with the motor stator 8S. And. As shown in FIG. 2, the boss portion 23 protrudes from the inner surface of the partition wall 6A toward the inner space 28 of the motor rotor 8R. A rotor shaft 30 is rotatably supported on an inner peripheral surface of a tip portion of the boss portion 23 via a bearing 29 as a bearing. As shown in FIG. 2, the input shaft 15 is coaxially disposed on the rotor shaft 30.

図４に示すように、リリーフバルブ２７は、仕切り壁６Ａに形成した円柱状のスライド穴３１が、上記第４吐出通路２４Ｄが連通するように形成されている。スライド穴３１内には、ボール弁３２が収納されている。このボール弁３２は、コイルスプリング３３で第４吐出通路２４Ｄを塞ぐように付勢されている。スライド穴３１を構成する仕切り壁６Ａには、排油孔３４が形成されている。この排油孔３４は、スライド穴２３内のオイルを第２モータジェネレータ１４の内側空間２８へ供給できるように連通している。図２に示すように、排油孔３４は、鉛直方向で、軸受としてのベアリング２９よりも鉛直方向において高い位置で開口されている。   As shown in FIG. 4, in the relief valve 27, a cylindrical slide hole 31 formed in the partition wall 6A is formed so that the fourth discharge passage 24D communicates. A ball valve 32 is accommodated in the slide hole 31. The ball valve 32 is biased by a coil spring 33 so as to close the fourth discharge passage 24D. An oil drain hole 34 is formed in the partition wall 6 </ b> A constituting the slide hole 31. The oil drain hole 34 communicates so that the oil in the slide hole 23 can be supplied to the inner space 28 of the second motor generator 14. As shown in FIG. 2, the oil drain hole 34 is opened at a position higher in the vertical direction than the bearing 29 as a bearing in the vertical direction.

図３および図４に示すように、仕切り壁６Ａの外側面とオイルポンプカバー２４との接合面には、オイルポンプ１０および第４吐出通路２４Ｄを取り囲むようにガスケット３５が設けられている。図３に示すように、仕切り壁６Ａの外側面においてガスケット３５の外側領域には、オイルポンプカバー２４を図示しないボルトで固定するためのネジ孔３６が形成されている。   As shown in FIGS. 3 and 4, a gasket 35 is provided on the joint surface between the outer surface of the partition wall 6 </ b> A and the oil pump cover 24 so as to surround the oil pump 10 and the fourth discharge passage 24 </ b> D. As shown in FIG. 3, a screw hole 36 for fixing the oil pump cover 24 with a bolt (not shown) is formed in the outer region of the gasket 35 on the outer surface of the partition wall 6A.

（作用・効果）
上記構成のハイブリッド車両用駆動装置１では、車両が高速走行時にエンジン２が高回転となりオイルポンプ１０の回転数も上昇すると、オイルポンプ１０内の圧力が高まる。具体的には、インナロータ２５の回転上昇により、間隙Ｓから第１吐出通路２４Ａへ流出するオイル量が増加する。これに伴い、第２吐出通路２４Ｂに流入するオイル量が増加して第３吐出通路２４Ｃにオイルを供給する。第３吐出通路２４Ｃ内のオイルは、入力軸１５の適所に形成された図示しないオイル供給孔に油路１５Ａを介して供給可能となる。 (Action / Effect)
In the hybrid vehicle drive device 1 having the above-described configuration, when the engine 2 rotates at a high speed and the rotational speed of the oil pump 10 increases when the vehicle travels at a high speed, the pressure in the oil pump 10 increases. Specifically, the amount of oil flowing out from the gap S to the first discharge passage 24A increases as the inner rotor 25 rotates. Along with this, the amount of oil flowing into the second discharge passage 24B increases and supplies oil to the third discharge passage 24C. The oil in the third discharge passage 24C can be supplied to an oil supply hole (not shown) formed at an appropriate position of the input shaft 15 via the oil passage 15A.

リリーフバルブ２７では、第４吐出通路２４Ｄ内のオイル圧力が増加すると、所定オイル圧力を超えたときに、ボール弁３２がコイルスプリング３３の付勢力に抗してコイルスプリング３３を縮める方向に移動する。図２および図４に示すように、ボール弁３２がコイルスプリング３３を縮める方向へ移動することにより、第４吐出通路２４Ｄとスライド穴２３とが連通する。これに伴い、排油孔３４からオイルを矢印Ｆに示すような流れで内側空間２８へ向けて排出する。   In the relief valve 27, when the oil pressure in the fourth discharge passage 24D increases, the ball valve 32 moves in a direction to contract the coil spring 33 against the urging force of the coil spring 33 when the predetermined oil pressure is exceeded. . As shown in FIGS. 2 and 4, when the ball valve 32 moves in the direction in which the coil spring 33 is contracted, the fourth discharge passage 24 </ b> D and the slide hole 23 communicate with each other. Along with this, oil is discharged from the oil discharge hole 34 toward the inner space 28 in a flow as indicated by an arrow F.

図２に示すように、排油孔３４の開口部は、軸受としてのベアリング２９よりも鉛直方向で上側に位置するため、ベアリング２９や第２モータジェネレータ８のモータロータ８Ｒにオイルを落下させて供給できる。これにより、ベアリング２９の潤滑やモータロータ８Ｒの冷却を行うことができる。本実施の形態では、第２モータジェネレータ８などを冷却するために、専用のオイル通路やオイルジェットが必要ない。このため、ハイブリッド車両用駆動装置１の構成を簡素な構成としつつ、第２モータジェネレータ８などの冷却性を向上できる。なお、排油孔３４から吐出されたオイルは、図示しないオイル溜めに回収されて、オイルポンプ１０等に循環されるようになっている。   As shown in FIG. 2, the opening of the oil drain hole 34 is positioned above the bearing 29 as a bearing in the vertical direction, so that oil is dropped and supplied to the bearing 29 and the motor rotor 8 </ b> R of the second motor generator 8. it can. Thereby, the lubrication of the bearing 29 and the cooling of the motor rotor 8R can be performed. In the present embodiment, no dedicated oil passage or oil jet is required for cooling the second motor generator 8 and the like. Therefore, the cooling performance of the second motor generator 8 and the like can be improved while the configuration of the hybrid vehicle drive device 1 is simplified. The oil discharged from the oil drain hole 34 is collected in an oil reservoir (not shown) and circulated to the oil pump 10 and the like.

ハイブリッド車両用駆動装置１において、車両が高速走行したときには、エンジン２および第２モータジェネレータ８の回転が上昇する。これに伴い、ベアリング２９の必要潤滑油量、モータロータ８Ｒの必要冷却油量が増加する。本実施の形態では、リリーフバルブ２７の排油孔３４からの開放油量をエンジン２の回転上昇とともに増加させることができるため、必要油量に応じた油を供給することができる。このため、ハイブリッド車両用駆動装置１では、別途、潤滑油供給装置を追加する必要がなく、装置本体３の小型化を図ることができる。   In the hybrid vehicle drive device 1, when the vehicle travels at a high speed, the rotation of the engine 2 and the second motor generator 8 increases. Along with this, the required lubricating oil amount of the bearing 29 and the required cooling oil amount of the motor rotor 8R increase. In the present embodiment, since the amount of open oil from the oil discharge hole 34 of the relief valve 27 can be increased with the increase in rotation of the engine 2, oil corresponding to the required amount of oil can be supplied. For this reason, in the hybrid vehicle drive device 1, it is not necessary to separately add a lubricating oil supply device, and the device main body 3 can be downsized.

なお、常時、リリーフバルブ２７から第２モータジェネレータ８のモータロータ８Ｒにオイルを供給すると、オイルポンプの駆動損失が増加して燃費の低下につながる。そこで、本実施の形態では、モータロータ８Ｒを、車両が低中速走行するときには、ギヤで掻き揚げられるオイルの飛沫による潤滑を行い、高速走行時のみリリーフバルブ２７からオイル供給するように設定している。   If oil is always supplied from the relief valve 27 to the motor rotor 8R of the second motor generator 8, the drive loss of the oil pump increases, leading to a reduction in fuel consumption. Therefore, in the present embodiment, the motor rotor 8R is set so that when the vehicle travels at low and medium speeds, it is lubricated by the splash of oil that is lifted by the gears, and oil is supplied from the relief valve 27 only during high speed travel. Yes.

本実施の形態に係るハイブリッド車両用駆動装置１は、リリーフバルブ２７を設けたボス部２３が第２モータジェネレータ８の内側内の内側空間２８に突出するように配置されている。このため、本実施の形態では、ハウジング６の仕切り壁６Ａを外側に向けて突出するように形成する必要がない。したがって、本実施の形態では、ハイブリッド車両用駆動装置１におけるオイルポンプ１０が外側へ突出する量を抑えることができるため、この観点からも装置本体３の小型化を図ることができる。   The hybrid vehicle drive device 1 according to the present embodiment is arranged such that the boss portion 23 provided with the relief valve 27 protrudes into the inner space 28 inside the second motor generator 8. For this reason, in this Embodiment, it is not necessary to form so that the partition wall 6A of the housing 6 may protrude toward the outer side. Therefore, in the present embodiment, the amount by which the oil pump 10 in the hybrid vehicle drive device 1 protrudes outward can be suppressed, so that the device body 3 can also be reduced in size from this viewpoint.

（その他の実施の形態）
以上、実施の形態について説明したが、本発明はこれに限定されるものではない。例えば、上記実施の形態では、オイルポンプ１０としてトロコイド式の容積型ポンプを適用したがこれに限定されるものではない。 (Other embodiments)
Although the embodiment has been described above, the present invention is not limited to this. For example, in the above embodiment, a trochoidal positive displacement pump is applied as the oil pump 10, but the present invention is not limited to this.

また、上記実施の形態では、第１遊星歯車機構１３と第２遊星歯車機構１４とで複合遊星歯車機構９を構成したが、遊星歯車機構が単一のハイブリッド車両用駆動装置においても本発明が適用できることは云うまでもない。   In the above-described embodiment, the first planetary gear mechanism 13 and the second planetary gear mechanism 14 constitute the compound planetary gear mechanism 9. However, the present invention is applicable to a hybrid vehicle drive device having a single planetary gear mechanism. Needless to say, this is applicable.

１ ハイブリッド車両用駆動装置
２ エンジン
２Ａ 出力軸
６ ハウジング
６Ａ 仕切り壁
７ 第１モータジェネレータ
８ 第２モータジェネレータ
８Ｓ モータステータ
８Ｒ モータロータ
１０ オイルポンプ
１３ 第１遊星歯車機構
１４ 第２遊星歯車機構
１５ 入力軸
１５Ａ 油路
２３ ボス部
２４ オイルポンプカバー
２５ インナロータ
２６ アウタロータ
２７ リリーフバルブ
２８ 内側空間
２９ ベアリング
３４ 排油孔 DESCRIPTION OF SYMBOLS 1 Hybrid vehicle drive device 2 Engine 2A Output shaft 6 Housing 6A Partition wall 7 First motor generator 8 Second motor generator 8S Motor stator 8R Motor rotor 10 Oil pump 13 First planetary gear mechanism 14 Second planetary gear mechanism 15 Input shaft 15A Oil passage 23 Boss portion 24 Oil pump cover 25 Inner rotor 26 Outer rotor 27 Relief valve 28 Inner space 29 Bearing 34 Oil drain hole

Claims (3)

エンジンと、ハウジング内に配置され、かつ前記エンジンの出力軸に連結される入力軸と、前記ハウジング内に配置され、かつ前記入力軸と同軸に配置されるモータジェネレータと、該モータジェネレータの軸方向端部と隣設する位置に配置される前記ハウジングの仕切り壁と、前記仕切り壁に配置され、前記入力軸によって駆動されるオイルポンプと、該オイルポンプから余剰のオイルを排出するリリーフバルブと、を備えるハイブリッド車両用駆動装置において、
前記モータジェネレータは、ロータ軸と、このロータ軸の外側に連結されるモータロータと、を有し、
前記仕切り壁は、前記モータロータの内側空間内に挿入されるボス部を有し、
前記ロータ軸を回転自在に前記ボス部に支持する軸受が前記モータロータの内側空間内に配置され、
前記ボス部内に前記リリーフバルブが配置され、当該リリーフバルブの排油孔を前記モータロータの内側空間内で上向きに開口させたことを特徴とするハイブリッド車両用駆動装置。 An engine, an input shaft disposed in the housing and coupled to the output shaft of the engine, a motor generator disposed in the housing and disposed coaxially with the input shaft, and an axial direction of the motor generator A partition wall of the housing disposed at a position adjacent to the end, an oil pump disposed on the partition wall and driven by the input shaft, and a relief valve for discharging excess oil from the oil pump; In a hybrid vehicle drive device comprising:
The motor generator has a rotor shaft and a motor rotor coupled to the outside of the rotor shaft,
The partition wall has a boss portion inserted into the inner space of the motor rotor ,
A bearing that rotatably supports the rotor shaft on the boss portion is disposed in an inner space of the motor rotor,
A drive device for a hybrid vehicle, wherein the relief valve is disposed in the boss portion, and an oil drain hole of the relief valve is opened upward in an inner space of the motor rotor . 前記リリーフバルブは、ボール弁と、コイルスプリングと、これら両者を内部に収納する円柱状のスライド穴と、を有し、
前記円柱状のスライド穴における端部が前記軸受と対峙するよう前記ボス部に配置されていることを特徴とする請求項１に記載のハイブリッド車両用駆動装置。 The relief valve has a ball valve, a coil spring, and a cylindrical slide hole that houses both of them,
2. The hybrid vehicle drive device according to claim 1, wherein an end portion of the cylindrical slide hole is disposed on the boss portion so as to face the bearing . 前記排油孔は、その上流端より下流端が前記入力軸の軸方向で前記軸受側に位置するように傾斜されていることを特徴とする請求項１または請求項２に記載のハイブリッド車両用駆動装置。3. The hybrid vehicle according to claim 1, wherein the oil drain hole is inclined so that a downstream end thereof is positioned on the bearing side in an axial direction of the input shaft from an upstream end thereof. 4. Drive device.
JP2013196682A 2013-09-24 2013-09-24 Hybrid vehicle drive device Active JP6244772B2 (en)

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DE102014218933.0A DE102014218933B4 (en) 2013-09-24 2014-09-19 Drive unit for a hybrid vehicle

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