WO2008059729A1 - 車両用駆動装置の制御装置 - Google Patents
車両用駆動装置の制御装置 Download PDFInfo
- Publication number
- WO2008059729A1 WO2008059729A1 PCT/JP2007/071527 JP2007071527W WO2008059729A1 WO 2008059729 A1 WO2008059729 A1 WO 2008059729A1 JP 2007071527 W JP2007071527 W JP 2007071527W WO 2008059729 A1 WO2008059729 A1 WO 2008059729A1
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- Prior art keywords
- engine
- speed
- gear
- rotation
- shift
- Prior art date
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Classifications
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- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/28—Wheel speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2530/00—Input parameters relating to vehicle conditions or values, not covered by groups B60W2510/00 or B60W2520/00
- B60W2530/10—Weight
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2540/00—Input parameters relating to occupants
- B60W2540/10—Accelerator pedal position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2540/00—Input parameters relating to occupants
- B60W2540/12—Brake pedal position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2540/00—Input parameters relating to occupants
- B60W2540/16—Ratio selector position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0616—Position of fuel or air injector
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/43—Engines
- B60Y2400/435—Supercharger or turbochargers
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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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
- F16H37/0833—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths
- F16H37/084—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths at least one power path being a continuously variable transmission, i.e. CVT
- F16H2037/0866—Power split variators with distributing differentials, with the output of the CVT connected or connectable to the output shaft
- F16H2037/0873—Power split variators with distributing differentials, with the output of the CVT connected or connectable to the output shaft with switching, e.g. to change ranges
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0043—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising four forward speeds
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
- F16H2200/2012—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with four sets of orbital gears
-
- 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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
- F16H2200/2043—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with five engaging means
-
- 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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/72—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
- F16H3/727—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously with at least two dynamo electric machines for creating an electric power path inside the gearing, e.g. using generator and motor for a variable power torque path
- F16H3/728—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously with at least two dynamo electric machines for creating an electric power path inside the gearing, e.g. using generator and motor for a variable power torque path with means to change ratio in the mechanical gearing
-
- 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
-
- 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
- Y02T10/64—Electric machine technologies in electromobility
Definitions
- the present invention relates to an electric differential section (or continuously variable transmission section) having a differential mechanism capable of operating a differential action, and a speed change provided from the differential section to a power transmission path of a drive wheel.
- the present invention relates to a motor for configuring a differential section and a technique for improving durability of the differential mechanism.
- a control device for a vehicle drive device that includes a differential portion having a differential mechanism and a speed change portion provided in a power transmission path of a drive wheel from a transmission member is well known.
- the control device for a vehicle drive device described in Patent Document 1 is this.
- a differential mechanism is constituted by a planetary gear device, and a differential unit including a second electric motor operatively connected to a transmission member, and a stepped automatic transmission.
- An overall gear ratio is formed.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2006-118667
- Patent Document 2 Japanese Patent Laid-Open No. 2003-199212
- Patent Document 3 Japanese Patent Laid-Open No. 2005-313865
- Patent Document 4 JP-A-2005-318780
- the rotational speed of the transmission member which is the output member of the differential section, is the rotational speed on the input side of the transmission section and is constrained by the rotational speed on the output side of the transmission section.
- the rotational speed of the transmission member is uniquely determined from the vehicle speed and the gear ratio of the transmission unit.
- the rotational speed of the transmission member (third element) changes with the speed change of the speed change part, and depending on the gear ratio of the speed change part at that time, the first element, the second element, and the third element
- the rotation speed of the first motor (second element) which is determined based on the relationship between the relative rotation speeds of each other, could overspeed and reduce the durability of the first motor.
- the present invention has been made against the background of the above circumstances, and the object of the present invention is to prevent over-rotation of the first motor and the pinion gear constituting the differential mechanism regardless of the speed change of the speed change unit.
- An object of the present invention is to provide a control device for a vehicle drive device that suppresses and improves the durability of the first electric motor and the pinion gear.
- the gist of the invention according to claim 1 for achieving the purpose is (a) a first element connected to the engine and a second element connected to the first motor.
- a differential part having a third element coupled to the transmission member and distributing the output of the engine to the first electric motor and the transmission member; and a power transmission path from the transmission member to the drive wheel And a transmission unit provided in
- (B) including engine rotation limiting means for limiting a predetermined rotational speed range of the engine according to a gear ratio of the transmission unit.
- the engine rotation limiting means limits the predetermined rotational speed range of the engine in accordance with the gear ratio of the transmission unit.
- the over-rotation of the pinion gear constituting the moving mechanism is suppressed, and the durability of the first motor and pinion gear is improved.
- the engine rotation limiting means controls an upper limit rotation speed range of the engine. It is limited. In this way, the first motor is prevented from over-rotating and the durability of the first motor is improved regardless of the speed change of the transmission unit.
- the engine rotation limiting means limits a lower limit rotation speed range of the engine. It is. In this way, over-rotation of the pinion gear constituting the differential mechanism is prevented and the durability of the pinion gear is improved regardless of the shift of the transmission unit.
- the engine rotation limiting means limits the engine load by limiting the engine load. This is to limit the predetermined rotational speed range of the engine. In this way, for example, the engine speed can be appropriately limited so as to suppress over-rotation of the pinion gear constituting the first electric motor and the differential mechanism.
- the engine rotation limiting means is configured to control the engine based on a vehicle speed.
- a predetermined rotation speed range is set.
- the engine rotation speed is appropriately limited in accordance with the rotation speed of the transmission member constrained by the vehicle speed so as to suppress over-rotation of the pinion gear constituting the first motor or the differential mechanism. be able to.
- the speed change is executed according to a predetermined shift map.
- the engine rotation limiting means limits a predetermined rotational speed range of the engine at the time of a failure in which the automatic transmission is shifted without following the shift map. . In this way, for example, overrunning of the pinion gears constituting the first electric motor and the differential mechanism can be suppressed, and the vehicle can be kept running after the speed change during the failure.
- the differential unit in the control device for a vehicle drive device according to any one of the first to sixth aspects, is configured such that an operating state of the first electric motor is controlled. By this, it operates as a continuously variable transmission. In this way, the differential unit and the transmission unit constitute a continuously variable transmission, and the drive torque can be changed smoothly. Still, The differential unit can be operated as a stepped transmission by changing the gear ratio stepwise, in addition to being operated as an electric continuously variable transmission by continuously changing the gear ratio.
- the differential mechanism includes a first element coupled to the engine, a second element coupled to the first electric motor, and a third element coupled to the transmission member.
- the first element is a carrier of the planetary gear unit
- the second element is a sun gear of the planetary gear unit
- the third element is a ring gear of the planetary gear unit. is there. In this way, the axial dimension of the differential mechanism is reduced. Further, the differential mechanism can be easily configured by one planetary gear device.
- the planetary gear device is a single pinion type planetary gear device.
- the differential mechanism is simply configured by a single pinion type planetary gear device.
- the overall gear ratio of the vehicle drive device is formed based on the gear ratio of the transmission unit and the gear ratio of the differential unit. In this way, a wide driving force can be obtained by using the gear ratio of the transmission unit.
- the transmission unit is a stepped automatic transmission.
- a continuously variable transmission is configured by a differential unit that functions as an electric continuously variable transmission and a stepped automatic transmission, and the drive torque can be changed smoothly.
- the differential unit and the stepped automatic transmission constitute a state equivalent to a stepped transmission, and the vehicle drive device is integrated. It is also possible to obtain the drive torque quickly by changing the gear ratio stepwise.
- the engine load is a required load on the engine, for example, an accelerator operation amount (accelerator opening) indicating an amount of depression of an accelerator pedal, an opening angle corresponding to the accelerator opening,
- an accelerator operation amount indicating an amount of depression of an accelerator pedal
- an opening angle corresponding to the accelerator opening The throttle valve opening, the intake air amount, the fuel injection amount, or the intake air amount or the fuel injection amount obtained from the target throttle valve opening are used.
- FIG. 1 is a skeleton diagram illustrating a configuration of a drive device for a hybrid vehicle according to an embodiment of the present invention.
- FIG. 2 Combination of hydraulic friction engagement devices used for shifting operation of the drive unit of Fig. 1 It is an action
- FIG. 3 is a collinear diagram illustrating the relative rotational speed of each gear stage in the drive device of FIG. 1.
- FIG. 4 is a diagram for explaining input / output signals of an electronic control unit provided in the drive device of FIG. 1.
- FIG. 5 is a circuit diagram relating to a linear solenoid valve for controlling the operation of each hydraulic actuator for clutch C and brake B in the hydraulic control circuit.
- FIG. 6 is an example of a shift operation device operated to select a plurality of types of shift positions equipped with a shift lever.
- FIG. 7 is a functional block diagram illustrating a main part of a control operation of the electronic control device of FIG.
- FIG. 8 is a diagram showing an example of a shift map used in the shift control of the drive device, and an example of a drive force source map used in drive force source switching control for switching between engine travel and motor travel. It is also a diagram showing the relationship.
- a broken line is an optimal fuel consumption rate curve of an engine and is an example of a fuel consumption map.
- FIG. 10 is a diagram showing an example of an overspeed region map used in engine speed limit control, and is set for each fail gear stage.
- FIG. 11 is a diagram showing an example of an engine upper limit rotation region map used in engine rotation restriction control, which is set for each fail gear stage.
- FIG. 12 is a flowchart for explaining the control operation of the electronic control device of FIG. 4, that is, the control operation for improving the durability of the first motor by suppressing the overspeed of the first motor regardless of the shift of the automatic transmission unit. It is.
- FIG. 13 is a diagram showing an example of an engine lower limit rotation region map used in engine rotation restriction control, which is set for each fail gear stage.
- FIG. 14 Explains the control operation of the electronic control device of FIG. 4, that is, the control operation for improving the durability of the first planetary gear by suppressing the over-rotation of the first planetary gear regardless of the shift of the automatic transmission unit.
- Engine 10 Transmission mechanism (vehicle drive unit)
- FIG. 1 is a skeleton diagram illustrating a transmission mechanism 10 that constitutes a part of a drive device for a hybrid vehicle to which the present invention is applied.
- a transmission mechanism 10 includes an input shaft 14 as an input rotating member disposed on a common shaft center in a transmission case 12 (hereinafter referred to as case 12) as a non-rotating member attached to a vehicle body, A differential unit 11 as a continuously variable transmission unit directly connected to the input shaft 14 or indirectly via a pulsation absorbing damper (vibration damping device), etc., and the differential unit 11
- An automatic transmission unit 20 as a power transmission unit connected in series via a transmission member (transmission shaft) 18 in a power transmission path between the drive wheels 34 (see FIG.
- the speed change mechanism 10 is preferably used for, for example, an FR (front engine 'rear drive) type vehicle installed vertically in a vehicle, and directly to the input shaft 14 or directly via a pulsation absorbing damper (not shown).
- FR front engine 'rear drive
- As a driving power source for traveling for example, an engine 8 that is an internal combustion engine such as a gasoline engine or a diesel engine, and a pair of driving wheels 34 are provided, and the power from the engine 8 is part of the power transmission path.
- a differential gear device (final reduction gear) 32 (see FIG. 7) and a pair of axles etc. are sequentially transmitted to a pair of drive wheels 34.
- the engine 8 and the differential portion 11 are directly connected.
- This direct connection means that the connection is made without using a hydraulic power transmission device such as a torque converter or a fluid coupling.
- the connection via the pulsation absorbing damper is included in this direct connection. Since the speed change mechanism 10 is configured symmetrically with respect to its axis, the lower side is omitted in the skeleton diagram of FIG. The same applies to the following embodiments.
- the differential unit 11 is a mechanical mechanism that mechanically distributes the output of the engine 8 input to the first motor Ml and the input shaft 14, and outputs the output of the engine 8 to the first motor Ml and the transmission unit.
- a power distribution mechanism 16 serving as a differential mechanism that distributes the material 18 and a second electric motor M2 that is operatively connected to rotate integrally with the transmission member 18 are provided.
- the first motor Ml and the second motor M2 of the present embodiment are so-called motor generators that also have a power generation function.
- the first motor Ml has at least a generator (power generation) function for generating a reaction force
- the second motor M2 has at least a motor (electric motor) function for outputting a driving force as a driving force source for traveling.
- the power distribution mechanism 16 is mainly composed of a single pinion type first planetary gear device 24 having a predetermined gear ratio p 1 of about “0.418”, for example.
- the first planetary gear device 24 includes a first sun gear S1, a first planetary gear Pl, a first carrier CA1 that supports the first planetary gear PI so as to be capable of rotating and revolving, and a first planetary gear PI through a first planetary gear PI.
- the first ring gear R1 that meshes with the sun gear SI is provided as a rotating element.
- the gear ratio ⁇ 1 is ZS1 / ZR1.
- the first carrier CA1 is the input shaft 14, that is, the engine
- the first sun gear S 1 is connected to the first electric motor Ml, and the first ring gear R 1 is connected to the transmission member 18.
- the first sun gear Sl, the first carrier CA1, and the first ring gear R1, which are the three elements of the first planetary gear device 24, can rotate relative to each other. Therefore, the output of the engine 8 is distributed to the first electric motor Ml and the transmission member 18 and the distributed engine 8 is operated.
- the differential unit 1 1 (power distribution mechanism 16) is made to function as an electrical differential device, for example, the differential section 11 is in a so-called continuously variable transmission state (electric CVT state), and the transmission member regardless of the predetermined rotation of the engine 8 18 rotations are continuously changed. That is, the differential section 11 has a gear ratio ⁇ ⁇ (rotation speed N of the input shaft 14 / rotation speed ⁇ ⁇ of the transmission member 18) of the minimum value ⁇ Omin force.
- the automatic transmission unit 20 includes a single pinion type second planetary gear unit 26, a single pinion type third planetary gear unit 28, and a single pinion type fourth planetary gear unit 30.
- This is a planetary gear type multi-stage transmission that functions as an automatic transmission.
- the second planetary gear unit 26 includes a second sun gear S2, a second planetary gear P2, a second carrier CA2 that supports the second planetary gear P2 so as to be capable of rotating and revolving, and a second sun gear via the second planetary gear P2.
- a second ring gear R2 that meshes with S2 is provided, and has a predetermined gear ratio p2 of about “0.562”, for example.
- the third planetary gear unit 28 includes a third sun gear S3, a third planetary gear P3, a third carrier CA3 that supports the third planetary gear P3 so that it can rotate and revolve, and a third sun gear S3 via a third planetary gear P3. And a third ring gear R3, which has a predetermined gear ratio p3 of, for example, “0.425”.
- the fourth planetary gear unit 30 includes a fourth sun gear S4, a fourth planetary gear P4, a fourth carrier CA4 that supports the fourth planetary gear P4 so that it can rotate and revolve, and a fourth sun gear via a fourth planetary gear P4.
- a fourth ring gear R4 that meshes with S4 is provided, and has a predetermined gear ratio p4 of, for example, “0.421”.
- the number of teeth of the second sun gear S2 is ZS2, the number of teeth of the second ring gear R2 is ZR2, the number of teeth of the third sun gear S3 is ZS3, the number of teeth of the third ring gear R3 is ZR3, and the number of teeth of the fourth sun gear S4 is ZS4. If the number of teeth of the fourth ring gear R4 is ZR4, the gear ratio ⁇ 2 is ZS2 / ZR2, the gear ratio ⁇ 3 is ZS3 / ZR3, and the gear ratio p4 is ZS4 / ZR4.
- the second sun gear S2 and the third sun gear S3 are integrally connected to each other.
- the automatic transmission unit 20 and the differential unit 11 are provided with the first clutch C1 or the second clutch C2 used to establish each gear stage of the automatic transmission unit 20.
- the first clutch C1 and the second clutch C2 change the power transmission path between the transmission member 18 and the automatic transmission unit 20, that is, the power transmission path of the drive wheels 34 from the differential unit 11 (transmission member 18). It functions as an engagement device that selectively switches between a power transmission enabling state that enables power transmission on the power transmission path and a power transmission cutoff state that interrupts power transmission on the power transmission path.
- the power transmission path can be in a power transmission enabled state, or the first clutch C1 and the second clutch C2 are released.
- the power transmission path is in the power transmission cut-off state.
- the automatic transmission unit 20 performs clutch-to-clutch shift by releasing the disengagement-side engagement device and engaging the engagement-side engagement device to selectively establish each gear stage.
- the gear ratio ⁇ ( rotational speed of the transmission member 18 / rotation of the output shaft 22).
- a rolling speed ⁇ ) is obtained for each gear stage. For example, as shown in the engagement table in Figure 2
- the first gear C1 and the second brake B3 are engaged to establish the first gear stage in which the gear ratio ⁇ 1 is the maximum value, for example, about “3.357”, and the first clutch C1 and the second brake ⁇ 2
- the gear ratio ⁇ 2 is smaller than the first speed gear stage, for example, about “2.180”
- the second speed gear stage is established, and the first clutch C1 and the first brake B1 are engaged.
- the gear ratio ⁇ 3 is smaller than the second speed gear stage, for example, about ⁇ 1.424 '', and the third speed gear stage is established, and the gear ratio is increased by the engagement of the first clutch C1 and the second clutch C2.
- a fourth speed gear stage in which ⁇ 4 is smaller than the third speed gear stage, for example, about “1.000” is established.
- the reverse gear stage in which the gear ratio ⁇ R is a value between the first speed gear stage and the second speed gear stage, for example, about “3.209” is established by the engagement of the second clutch C2 and the third brake ⁇ 3. Be made. Further, the neutral “N” state is set by releasing the first clutch Cl, the second clutch C2, the first brake Bl, the second brake B2, and the third brake B3.
- V is a hydraulic friction engagement device as an engagement element that is often used in automatic transmissions for vehicles, and is a wet type in which a plurality of friction plates stacked on each other are pressed by a hydraulic actuator. Select a member on both sides where a multi-plate type or one or two bands wound around the outer periphery of the rotating drum are composed of a band brake that is tightened by a hydraulic actuator. It is for connecting.
- the differential unit 11 that functions as a continuously variable transmission and the automatic transmission unit 20 constitute a continuously variable transmission as a whole. Further, by controlling the gear ratio of the differential unit 11 to be constant, the differential unit 11 and the automatic transmission unit 20 can be configured in the same state as the stepped transmission.
- the differential unit 11 functions as a continuously variable transmission
- the automatic transmission unit 20 in series with the differential unit 11 functions as a stepped transmission.
- the rotation speed N) is obtained steplessly, and the transmission mechanism 10 is configured with V and a continuously variable transmission.
- the overall gear ratio ⁇ of the transmission mechanism 10 is a total gear ratio of the transmission mechanism 10 as a whole formed based on the gear ratio ⁇ 0 of the differential unit 11 and the gear ratio ⁇ of the automatic transmission unit 20.
- the transmission member rotational speed ⁇ is continuously variable with respect to each of the first gear to the fourth gear of the automatic transmission unit 20 shown in the engagement operation table of FIG. Change
- each gear stage can obtain a stepless gear ratio width. Therefore, the gear ratio between the gear stages can be continuously changed in a stepless manner, and the overall gear ratio ⁇ of the transmission mechanism 10 as a whole can be obtained continuously.
- the gear ratio of the differential unit 11 is controlled to be constant, and the clutch C and the brake ⁇ are selectively engaged and operated, so that the first to fourth speed gear stages.
- an overall gear ratio ⁇ ⁇ of the transmission mechanism 10 that changes in a substantially equal ratio is obtained for each gear stage. Therefore, a state equivalent to the stepped transmission is configured in the transmission mechanism 10.
- the gear ratio ⁇ ⁇ of the differential unit 11 is controlled to be fixed to “1”
- the first speed gear of the automatic transmission unit 20 as shown in the engagement operation table of FIG.
- the total gear ratio ⁇ ⁇ of the speed change mechanism 10 corresponding to each of the first gear to the fourth gear and the reverse gear is obtained for each gear.
- gear ratio ⁇ ⁇ of the differential section 11 is controlled to be fixed to a value smaller than “1”, for example, about 0.7 in the fourth speed gear stage of the automatic transmission section 20, the fourth speed gear stage.
- a total gear ratio ⁇ ⁇ ⁇ which is a value smaller than the stage, for example, “0.7” is obtained.
- FIG. 3 shows, in a straight line, the relative relationship between the rotational speeds of the rotating elements having different coupling states for each gear stage in the speed change mechanism 10 including the differential portion 11 and the automatic speed change portion 20.
- the collinear diagram that can be shown is shown.
- the collinear diagram of FIG. 3 is a two-dimensional coordinate composed of a horizontal axis indicating the relationship of the gear ratio ⁇ of each planetary gear unit 24, 26, 28, 30 and a vertical axis indicating the relative rotational speed.
- XI indicates the rotational speed zero
- horizontal line ⁇ 2 indicates the rotational speed ⁇ 1.0 '', that is, rotational speed ⁇ ⁇ ⁇ ⁇ of engine 8 connected to input shaft 14, and
- horizontal line XG indicates the rotational speed of transmission member 18.
- the three vertical lines ⁇ 1, ⁇ 2, and ⁇ 3 corresponding to the three elements of the power distribution mechanism 16 constituting the differential unit 11 are arranged in order from the left side to the second rotating element (second element) RE2.
- Corresponding first sun gear S l, 1st rotation element (1st element) 1st carrier CA1 corresponding to RE1, 3rd rotation element (3rd element) Indicates the relative rotation speed of 1st ring gear R1 corresponding to RE3
- These intervals are determined according to the gear ratio p 1 of the first planetary gear unit 24.
- the five vertical lines Y4, ⁇ 5, ⁇ 6, ⁇ 7, and ⁇ 8 of the automatic speed changer 20 correspond to the fourth rotating element (fourth element) RE4 in order from the left and are connected to each other.
- the sun gear S2 and the third sun gear S3 are connected to the second carrier CA2 corresponding to the fifth rotating element (fifth element) RE5, and the fourth ring gear R4 corresponding to the sixth rotating element (sixth element) RE6 is connected to the seventh gear.
- Rotating element (seventh element) Corresponding to the second ring gear R2, third carrier CA3, fourth carrier CA4 corresponding to RE7 and connected to each other, corresponding to the eighth rotating element (eighth element) RE8 and mutually
- the connected third ring gear R3 and fourth sun gear S4 are shown respectively, and the distance between them is the gear ratio p2, p3, p4 of the second, third, fourth planetary gear units 26, 28, 30.
- Each is determined accordingly.
- the interval between the carrier and the ring gear is set to an interval corresponding to the gear ratio p of the planetary gear unit.
- differential part 1 In 1 the interval between the vertical lines Yl and Y2 is set to the interval corresponding to “1”, and the interval between the vertical springs ⁇ 2 and ⁇ 3 is set to the interval corresponding to the gear ratio P1.
- the interval between the sun gear and the carrier is set to an interval corresponding to “1” for each of the second, third, and fourth planetary gear devices 26, 28, and 30, and the carrier and the ring gear are The interval is set to the interval corresponding to p.
- the speed change mechanism 10 of the present embodiment is the first rotating element of the first planetary gear unit 24 in the power distribution mechanism 16 (differential unit 11).
- RE1 first carrier CA1
- the second rotating element RE2 is connected to the first electric motor Ml
- the third rotating element (first ring gear R1) RE3 is connected to the transmission member 18 and the second It is connected to the electric motor M2, and is configured to transmit (input) the rotation of the input shaft 14 to the automatic transmission unit 20 via the transmission member 18.
- the relationship between the rotational speed of the first sun gear S1 and the rotational speed of the first ring gear R1 is shown by an oblique straight line L0 passing through the intersection of Y2 and X2.
- the first rotating element RE1 to the third rotating element RE3 are in a differential state in which they can rotate relative to each other, and at the intersection of the straight line L0 and the vertical line Y3.
- the first rotation gear N1 is controlled by controlling the engine rotation speed N so that the first ring gear indicated by the intersection of the straight line L0 and the vertical line Y2 Ki
- the rotation speed of the carrier CA1 When the rotation speed of the carrier CA1 is increased or decreased, the rotation speed of the first sun gear S1 indicated by the intersection of the straight line L0 and the vertical line Y1, that is, the rotation speed of the first motor Ml is increased or decreased.
- the rotation speed of the first sun gear S1 is the same as the engine rotation speed N by controlling the rotation speed of the first electric motor Ml so that the gear ratio ⁇ of the differential section 11 is fixed to "1".
- the straight line L0 is aligned with the horizontal line X2, and the first rotation is performed at the same speed as the engine speed N.
- Rotation speed of the ring gear R1 that is, the transmission member 18 is rotated.
- the rotation of the first sun gear S 1 is reduced to zero by controlling the rotational speed of the first electric motor Ml so that the gear ratio ⁇ ⁇ of the differential unit 11 is fixed to a value smaller than “1”, for example, about 0.7.
- the transmission member rotation speed N is rotated at a rotation speed increased from the engine rotation speed N.
- the fourth rotating element RE4 is selectively connected to the transmission member 18 via the second clutch C2 and selectively connected to the case 12 via the first brake B1.
- the fifth rotating element RE5 is selectively connected to the case 12 via the second brake B2
- the sixth rotating element RE6 is selectively connected to the case 12 via the third brake B3, so that the seventh rotation
- the element RE7 is connected to the output shaft 22, and the eighth rotating element RE8 is selectively connected to the transmission member 18 via the first clutch C1.
- the rotation speed of the output shaft 22 of the third speed (3rd) is indicated by the intersection with the vertical line Y7 indicating the rotation speed of the rotation element RE7, and is determined by engaging the first clutch C1 and the second clutch C2.
- the rotation speed of the fourth (4th) output shaft 22 is shown at the intersection of the horizontal line L4 and the vertical line Y7 indicating the rotation speed of the seventh rotation element RE7 connected to the output shaft 22.
- FIG. 4 illustrates a signal input to the electronic control device 80 for controlling the speed change mechanism 10 of the present embodiment and a signal output from the electronic control device 80.
- the electronic control unit 80 is configured to include a so-called mic port computer such as a CPU, ROM, RAM, and an input / output interface, and is stored in the ROM in advance while using a temporary storage function of the RAM.
- drive control such as hybrid drive control for the engine 8, first and second electric motors Ml and M2, and shift control for the automatic transmission unit 20 is executed.
- the electronic control unit 80 receives signals indicating the engine temperature TEMP, the shift position P of the shift lever 52 (see Fig. 6) and the "M" position from each sensor and switch as shown in Fig. 4.
- a signal indicating the number of operations in the gear a signal indicating the engine rotational speed N, which is the rotational speed of the engine 8
- a signal indicating the gear ratio train set value M mode (manual transmission mode)
- a signal representing the motive speed N, the rotational speed N of the second motor M2 (hereinafter referred to as the second
- Ml M2 is a signal indicating the motive speed N), the charging capacity of the battery 56 (see Fig. 7)
- a signal indicating SOC is supplied.
- the electronic control device 80 sends a control signal to an engine output control device 58 (see FIG. 7) for controlling the engine output, for example, the throttle valve opening of the electronic throttle valve 62 provided in the intake pipe 60 of the engine 8.
- the fuel supply amount signal that controls the fuel supply amount to the cylinder of the intake pipe 60 or the engine 8 by the fuel injection device 66 and the fuel injection device 66, the ignition signal that commands the ignition timing of the engine 8 by the ignition device 68, and the supercharging pressure are adjusted Boost pressure adjustment signal for operating the motor, electric air conditioner drive signal for operating the electric air conditioner, command signal for commanding the operation of the motors Ml and M2, shift position (operation position) display signal for operating the shift indicator, gear Gear ratio display signal to display the ratio, snow mode display signal to display that it is in snow mode, ABS operation signal to operate the ABS actuator to prevent wheel slipping during braking, M mode Controls the hydraulic actuator of the hydraulic friction engagement device of the M mode display signal, the differential unit 11 and the automatic transmission unit 20 that displays that it is selected
- the valve command signal for operating the solenoid valve (linear solenoid valve) included in the hydraulic control circuit 70 (see FIGS.
- a signal for regulating the line hydraulic pressure P, and a drive command signal for operating the electric hydraulic pump that is the source of the original pressure for regulating the line hydraulic pressure P A signal for driving the electric heater, a signal to the cruise control computer, etc. are output.
- Fig. 5 shows a linear solenoid valve SL1 that controls the operation of hydraulic actuators AC1, AC2, AB1, AB2, AB3 for clutches Cl and C2 and brakes B1 to B3 in hydraulic control circuit 70. It is a circuit diagram regarding ⁇ SL5.
- each hydraulic actuator AC1, AC2, AB1, AB2, AB3 has a line hydraulic pressure PL, which is an engagement pressure corresponding to a command signal from the electronic control unit 80 by a linear solenoid valve SL;! PC1, PC2, PB1, PB2, and PB3 are regulated and supplied directly.
- This line oil pressure PL is based on a hydraulic pressure generated by a mechanical oil pump driven by an electric oil pump (not shown) 30 as an original pressure. Is adjusted to a value corresponding to the engine load, etc., represented by the throttle valve opening ⁇ .
- Linear solenoid valves SL;! To SL5 are basically the same in configuration, and are excited and de-energized independently by the electronic control unit 80.
- Each hydraulic actuator AC1, AC2, AB1, AB2, AB3 Is controlled independently, and the engagement pressures PC1, PC2, PB1, PB2, and PB3 of the clutches C1 to C4 and brakes Bl and B2 are controlled.
- each gear stage is established by engaging a predetermined engagement device.
- a so-called clutch-to-clutch shift is executed in which, for example, the release and engagement of the clutch C and the brake B involved in the shift are controlled simultaneously.
- FIG. 6 shows a switching device for switching a plurality of types of shift positions P by human operation.
- FIG. 5 is a diagram showing an example of all shift operation devices 50.
- the shift operation device 50 is disposed beside the driver's seat, for example, and is operated to select a plurality of types of shift positions P.
- a shift lever 52 is provided.
- the shift lever 52 is in a neutral position in which the power transmission path in the speed change mechanism 10, that is, the automatic transmission unit 20, is interrupted, that is, in a neutral state, and is a parking position for locking the output shaft 22 of the automatic transmission unit 20.
- the forward automatic shift travel position “D (drive)” that executes automatic shift control within the change range of “” or the manual shift travel mode (manual mode) is established and the high-speed gear in the automatic shift control of the automatic transmission 20 is established. It is provided so that it can be manually operated to the forward manual shift travel position “M (manual)” for setting the so-called shift range that limits the gear.
- FIG. 2 is engaged in conjunction with manual operation of the shift lever 52 to each shift position P.
- the hydraulic control circuit 70 is electrically switched so that the gears in the reverse gear stage “R”, neutral “N”, forward gear stage “D”, etc. shown in the operation table are established.
- the “N” position is a non-traveling position that is sometimes selected when the vehicle is not traveling, and is shown in the engagement operation table of FIG. 2, for example, of the first clutch C1 and the second clutch C2. Select switching to the power transmission cut-off state of the power transmission path by the first clutch C1 and the second clutch C2, which disables driving of the vehicle in which the power transmission path in the automatic transmission unit 20 is released so that both are released. This is a non-driving position.
- the “R” position, the “D” position, and the “M” position are travel positions selected when the vehicle travels. For example, as shown in the engagement operation table of FIG.
- first clutch C1 and / or the second clutch C2 that can drive the vehicle to which the power transmission path in the automatic transmission 20 is engaged so that at least one of the clutch C1 and the second clutch C2 is engaged.
- the shift lever 52 is manually operated from the “P” position or! /, Or the “:” position from the “N” position, whereby the second clutch C2 is engaged and the automatic transmission unit
- the shift lever 52 is manually operated from the “N” position to the “D” position
- at least the first clutch C1 is engaged.
- the power transmission path in the automatic transmission unit 20 is changed from the power transmission cut-off state to the power transmission enabled state.
- the shift lever 52 is manually operated from the “R” position to the “P” position or the “N” position, the second clutch C2 is released, and the power transmission path in the automatic transmission unit 20 transmits power.
- FIG. 7 is a functional block diagram for explaining the main part of the control function by the electronic control unit 80.
- the stepped shift control means 82 includes an upshift line (solid line) and a downshift stored in advance with the vehicle speed V and the output torque T of the automatic transmission unit 20 as shown in FIG.
- Judgment is made as to whether or not the 20 gear shift should be executed, that is, the gear stage to be shifted in the automatic transmission unit 20 is determined, and the automatic shift control of the automatic transmission unit 20 is executed so that the determined gear stage is obtained. .
- the stepped shift control means 82 engages the hydraulic friction engagement device involved in the shift of the automatic transmission unit 20 so that the gear stage is achieved, for example, according to the engagement table shown in FIG.
- a command for shifting and / or releasing (shift output command, hydraulic pressure command), that is, releasing the disengagement side engagement device involved in the shift of the automatic transmission unit 20 and engaging the engagement side engagement device.
- a command to execute clutch-to-clutch shift is output to the hydraulic control circuit 70.
- the hydraulic control circuit 70 releases, for example, the disengagement side engagement device and engages the engagement side engagement device to execute the shift of the automatic transmission unit 20.
- the linear solenoid valve SL is actuated to activate the hydraulic actuator of the hydraulic friction engagement device involved in the speed change.
- the hybrid control means 84 allows the engine 8 to operate efficiently in the operating range V, while optimizing the distribution of driving force between the engine 8 and the second motor M2 and the reaction force generated by the power generation of the first motor Ml.
- the gear ratio ⁇ 0 as an electric continuously variable transmission of the differential section 11 is controlled by changing the power to. For example, at the traveling vehicle speed V at that time, the Calculate the target (required) output of the vehicle from the accelerator opening Acc and the vehicle speed V, calculate the required total target output from the target output of the vehicle and the required charging value, and transfer loss so that the total target output can be obtained.
- the target engine output is calculated in consideration of the auxiliary machine load, the assist torque of the second motor M2, etc., and the engine speed N and engine at which the target engine output is obtained.
- the engine 8 so that the engine torque T becomes equal to the torque T and the power generation amount of the first motor Ml
- the hybrid control means 84 executes the control in consideration of the gear position of the automatic transmission unit 20 in order to improve power performance and fuel consumption.
- the engine speed N and the vehicle speed determined to operate the engine 8 in an efficient operating range are included in the hybrid control means 84 .
- the differential unit 11 is caused to function as an electric continuously variable transmission. That is, the hybrid control means 84 determines whether the engine speed N and the output torque of the engine 8 (engine torque) T
- Optimum engine 8 as shown by the broken line in Fig. 9 which is experimentally determined and stored in advance so that both driving performance and fuel efficiency can be achieved during continuously variable speed driving within a two-dimensional coordinate system consisting of Engine torque T to generate the engine output necessary to satisfy the target output (total target output, required driving force), for example, so that the engine 8 can be operated along the fuel consumption rate curve (fuel consumption map, relationship) And the engine speed N so that the transmission
- a target value for the overall gear ratio ⁇ T of the structure 10 is determined, and the gear ratio ⁇ 0 of the differential unit 11 is controlled in consideration of the gear position of the automatic transmission unit 20 so that the target value is obtained.
- ⁇ ⁇ is controlled within the changeable range.
- the noise control means 84 supplies the electric energy generated by the first electric motor Ml to the power storage device 56 and the second electric motor M2 through the inverter 54, so that the main part of the power of the engine 8 Is mechanically transmitted to the transmission member 18 A part of the power of the engine 8 is consumed for the power generation of the first electric motor Ml, where it is converted into electric energy, and the electric energy is passed through the inverter 54.
- the second electric motor M2 is supplied, and the second electric motor M2 is driven and transmitted from the second electric motor M2 to the transmission member 18. From the generation of this electric energy to the consumption by the second electric motor M2, it is necessary to convert part of the power of the engine 8 into electric energy and convert that electric energy into mechanical energy.
- the electrical path is configured.
- the hybrid control means 84 controls the opening and closing of the electronic throttle valve 62 by the throttle actuator 64 for throttle control, and the fuel injection amount and injection timing by the fuel injection device 66 for fuel injection control.
- a command to control the ignition timing by the ignition device 68 such as an inverter for controlling the ignition timing is output to the engine output control device 58 alone or in combination to generate the necessary engine output.
- the engine output control means for executing the output control of the engine 8 is functionally provided.
- the hybrid control means 84 is basically not shown in FIG./, and the throttle actuator 60 is driven based on the accelerator opening Acc based on the relationship stored in advance, and the accelerator opening A cc Throttle control is performed so that the throttle valve opening ⁇ increases with increasing
- the engine output control device 58 controls the opening and closing of the electronic throttle valve 62 by the throttle actuator 64 for the throttle control according to the command from the hybrid control means 84, and performs the fuel injection control. Therefore, the engine speed control and the engine torque control are executed by controlling the fuel injection by the fuel injection device 66 and controlling the ignition timing by the ignition device 68 such as an igniter for the ignition timing control.
- the hybrid control means 84 controls the engine rotation speed N regardless of whether the vehicle is stopped or traveling, and the first motor rotation speed is controlled by the electric CVT function of the differential section 11.
- N can be any rotational speed.
- the noble control means 84 is
- the hybrid control means 84 is configured to restrain the vehicle speed V (drive wheel 34) when the first electric motor rotational speed ⁇ is reduced while the vehicle is running.
- the hybrid control means 84 can drive the motor by the electric CVT function (differential action) of the differential section 11 regardless of whether the engine 8 is stopped or in an idle state.
- the hybrid control means 52 uses the driving power source for driving stored in advance with the vehicle speed V and the output torque T of the automatic transmission 20 as variables as shown in FIG.
- the actual vehicle speed V and the required output torque T of the automatic transmission 20 are determined from the relationship (drive force source switching diagram, drive force source map) that has a boundary between the engine travel region and the motor travel region for switching between the machine M2 and the motor travel region. Based on the vehicle condition indicated, the motor travel area and engine
- the motor running or the engine running is executed by determining which force is the running area.
- the driving force source map indicated by the solid line A in FIG. 8 is stored in advance together with the shift map indicated by the solid line and the alternate long and short dash line in FIG.
- the motor travel by the hybrid control means 52 is as shown in FIG.
- the engine efficiency is generally relatively low compared to the high torque range, which is relatively low output torque T range, that is, low engine torque T range, or vehicle speed V is relatively low.
- the hybrid control means 84 reduces the first motor rotational speed N to a negative rotational speed in order to suppress dragging of the stopped engine 8 and improve fuel efficiency.
- the first motor Ml is idled by setting it to a no-load state, and the engine speed N is set to zero or zero as required by the electric CVT function (differential action) of the differential unit 1 1.
- the hybrid control means 84 sends the electric energy from the first electric motor Ml and / or the electric energy from the power storage device 56 to the second electric motor M2 by the electric path described above.
- the so-called torque assist for assisting the power of the engine 8 is possible by supplying and driving the second electric motor M2 to apply torque to the drive wheels 34.
- the hybrid control means 84 causes the differential motor 11 to be unable to transmit torque, that is, the power in the differential motor 11 by causing the first motor Ml to rotate freely in a no-load state, that is, idle. It is possible to make the state equivalent to the state where the transmission path is cut off and the state where the output from the differential unit 11 is not generated. That is, hybrid control means
- the first electric motor Ml can be brought into a no-load state so that the differential unit 11 can be in a neutral state (neutral state) in which the power transmission path is electrically cut off.
- the shift map as shown in Fig. 8 is, for example, in consideration of the durability of the first motor Ml, the first motor rotation speed N is over-rotated (for example, higher than about lOOOOrpm).
- the upshift lines and downshift lines for forming the respective gear stages (gear ratios) of the automatic transmission unit 20 are set so that the! In other words, the output shaft rotation speed N
- Each upshift line and downshift line are set so that the first motor rotation speed N determined based on the relationship between the relative rotation speeds of the OUT E Ml section 11 does not overspeed.
- the durability of the first electric motor Ml will be reduced.
- the position of the 2nd speed gear stage is changed to the 3rd speed gear stage with a smaller gear ratio than the 2nd speed gear stage by the linear solenoid valve SL;!
- the transmission member rotational speed N is reduced compared to the second gear, the engine rotational speed
- the machine rotation speed N may enter the overspeed range and the durability of the first motor Ml may be reduced.
- the first motor rotation speed N does not enter the overspeed region.
- gear ratio ⁇ dynamic transmission portion 20 comprises a E down Jin rotation limiting means 86 for limiting the predetermined rotational speed range of the engine 8.
- the shift position determination means 88 determines whether the shift lever 52 shift position ⁇
- the fail gear stage determining means 90 is, for example, the actual gear stage of the automatic transmission unit 20 shown in FIG. It is determined whether or not the gear is formed at the time of a failure in which the automatic speed change unit 20 is shifted without following the shift map as shown in FIG. For example, the fail gear stage determination means 90 is actually The actual gear ratio ⁇ is calculated from the transmission member rotation speed N and the output shaft rotation speed N, and
- the fail gear stage determining unit 90 determines that the actual gear stage of the automatic speed change unit 20 is a fail gear stage, the engine rotation limiting means 86 is the first motor rotation speed at the fail gear stage. To determine whether or not
- FIG. 10 shows the overspeed region of the first motor rotational speed N stored in advance (ie, limiting the engine rotational speed N) with the vehicle speed V and the engine load, for example, the accelerator opening Acc as variables.
- FIG. 5 is a diagram showing an example of a relationship (overspeed region map) having an engine speed limit region that needs to be performed, and this overspeed region map is set for each fail gear stage.
- this overspeed region map is set for each fail gear stage.
- the overspeed region of the first motor rotational speed N is provided to the region where the vehicle speed V is higher as the fail gear stage becomes the higher speed side shift stage as shown in FIG.
- FIG. 11 shows the engine speed stored in advance with the vehicle speed V and the engine speed N as variables.
- Relationship that has a limit area for the upper limit of the rotation speed N (engine upper limit rotation area map)
- the engine upper limit rotation region map is set for each fail gear stage. For example, at the same gear stage, the lower the vehicle speed V, the easier the first motor rotation speed N enters the overspeed range.
- the upper speed range of the engine speed N (ie, the first
- the engine speed N is limited so that the motor speed N does not enter the overspeed range.
- the engine speed limit range that needs to be adjusted is set, and the engine speed limit range is set lower as the vehicle speed V decreases.
- the higher the vehicle speed side shift stage the easier the first motor rotation speed N enters the overspeed range.
- the engine speed limit range is set to become lower at the same vehicle speed as the fail gear stage becomes the higher speed side shift stage, and the engine speed is increased to a higher vehicle speed V range. There is a restricted area.
- the engine rotation limiting means 86 determines that the first motor rotation speed N is in the overspeed area based on the actual vehicle speed V and the accelerator opening Acc from the overspeed area map of FIG.
- the engine speed limit range of V and engine speed N is set.
- a limit command is output from the hybrid control means 84.
- the abnormal control means 84 restricts the side that increases the throttle valve opening ⁇ , and controls the side that increases the fuel injection amount.
- the engine rotation limiting means 86 is the upper limit rotation speed of the engine rotation speed N.
- Limiting the range prevents the first motor speed N from entering the overspeed range.
- FIG. 12 shows the main part of the control operation of the electronic control unit 80, that is, the shift of the automatic transmission unit 20. Regardless of this, it is a flowchart for explaining the control operation for improving the durability of the first electric motor Ml by suppressing the over-rotation of the first electric motor Ml. For example, in a very short cycle time of about several msec to several tens msec. It is executed repeatedly.
- step 1 a signal representing the shift position P of the shift lever 52 is shown.
- whether the actual gear of the automatic transmission 20 is a fail gear (fail gear) is calculated from, for example, the actual transmission member rotational speed N and the output shaft rotational speed N.
- the actual gear ratio ⁇ is determined based on whether V is a gear ratio corresponding to the gear determined from the shift map shown in FIG.
- S3 corresponding to the engine speed limiting means 86, for example, based on the actual vehicle speed V and the accelerator opening Acc from the overspeed area map of FIG. It is determined whether or not the speed N enters the overspeed range, and the first motor
- the first motor rotation speed N is excessive.
- the engine speed limit area for engine speed N is set so as not to enter the Ml rotation area.
- the engine rotation speed N is set in S3.
- the rotation speed of the first planetary gear P1 (first (1 planetary gear rotation speed) N
- Each upshift line and downshift line for forming each gear stage (gear ratio) of the automatic transmission 20 is set. That is, the transmission member rotational speed N (the rotation of the first ring gear R1
- This first planetary gear rotation speed N is
- the durability of the first planetary gear PI may decrease.
- the engine rotation limiting means 86 replaces or in addition to the above-described embodiment, the first planetary gear rotation speed N does not enter the over-rotation region! /
- the predetermined rotational speed range of the engine 8 is limited according to 7.
- the engine speed limiting unit 86 sets the vehicle speed V at the fail gear stage. Predetermined rotation of engine speed N based on
- FIG. 13 shows the engine speed stored in advance with the vehicle speed V and the engine speed N as variables.
- the engine lower limit rotation region map is set for each fail gear stage. For example, at the same gear, the higher the vehicle speed V, the difference in rotational speed ⁇ ⁇
- Limit rotation speed range that is, the first planetary gear rotation speed N does not enter the over-rotation range
- the lower the vehicle speed side gear position, the higher the engine speed limit area at the same vehicle speed, and the engine speed limit area is set up to a lower vehicle speed range. Yes.
- the engine speed limiting means 86 sets an engine speed limit area of the engine speed N based on the actual vehicle speed V from the engine lower limit speed map shown in FIG.
- the lower speed range of the engine speed N is controlled.
- the hybrid control means 84 ⁇ outputs a limited engine rotation lower limit command.
- the hybrid control means 84 controls the throttle control for limiting the side to decrease the throttle valve opening ⁇ and the side for decreasing the fuel injection amount in accordance with the engine rotation lower limit control command.
- the limited fuel injection control etc. is executed to set the lower speed range of the engine speed N.
- FIG. 14 shows that the main planetary gear P1 is prevented from over-rotating and the durability of the first planetary gear P1 is improved regardless of the main control operation of the electronic control unit 80, that is, the shift of the automatic transmission unit 20.
- FIG. 6 is a flowchart for explaining a control operation for performing the operation, and is repeatedly executed with an extremely short cycle time of, for example, about several milliseconds to several tens of milliseconds.
- the flowchart of FIG. 14 is another embodiment corresponding to the flowchart of FIG. 12, and the flowchart of FIG.
- the main difference is that S3 and S4 in the port are changed to S3 'and S4'.
- S3 ′ and S4 ′ which are the differences, will be described.
- the engine speed limit range for speed N is set.
- An engine rotation lower limit restriction command that restricts the limited rotation speed range is output, and the slot that restricts the side that decreases the throttle valve opening ⁇ according to the engine rotation lower limit restriction command is output.
- the engine speed control and the fuel injection control that limits the fuel injection amount reduction are executed to limit the lower limit of the engine speed N.
- the engine speed limiting means 86 changes the engine according to the gear ratio ⁇ of the automatic transmission unit 20 so that the first planetary gear rotation speed N does not enter the overspeed region.
- the first planetary gear P1 is improved in durability by suppressing the over-rotation of the first planetary gear P1 regardless of the shift of the automatic transmission unit 20.
- the lower speed range of the engine 8 is limited at the time of a failure in which the automatic transmission 20 is performed without following the shift map as shown in FIG. As a result, overrunning of the first planetary gear P1 is suppressed, and the running of the vehicle is maintained during the failure.
- the engine speed ⁇ is reduced by the engine speed limiting means 86.
- the engine load is limited to the lower limit of the engine speed ⁇ .
- the engine speed ⁇ is set so as to suppress over-rotation of the first planetary gear P1.
- the engine rotation restriction means 86 limits the engine rotation speed at the engine rotation speed ⁇ with the first planetary gear rotation speed ⁇ as the overspeed region based on the vehicle speed V.
- the engine rotation speed N is appropriately limited in accordance with the transmission member rotation speed N that is constrained by the vehicle speed V so as to suppress over-rotation of the first planetary gear PI, for example.
- the engine rotation limiting means 86 is the force S for executing the engine rotation limit control, not only when it is at the fail gear stage, but the engine rotation limit control. May be executed.
- the first planetary gear rotation speed N is always overrun based on the actual vehicle speed V from the engine lower limit rotation area map in FIG.
- the engine speed limiting means 86 is provided at the engine speed N.
- Limiting the speed range means that the second motor speed N continues to stagnate in the high speed range.
- the differential unit 11 (power distribution mechanism 16) is an electric continuously variable transmission whose gear ratio ⁇ 0 is continuously changed to the minimum value ⁇ Omin force maximum value ⁇ Omax.
- the present invention can be applied even if the gear ratio ⁇ 0 of the differential unit 11 is changed not in a continuous manner but in a stepwise manner using a differential action. .
- the differential unit 11 is provided in the power distribution mechanism 16 to limit the differential action so that it can be operated as at least a two-stage forward transmission. It may be provided with a device.
- the first carrier CA1 is connected to the engine 8, the first sun gear S1 is connected to the first electric motor Ml, and the first ring gear R1 is connected to the transmission member 18.
- the force connected to the engine 8, the first electric motor Ml, and the transmission member 18 are not necessarily limited to them, and the three elements CA1, S1, R1 of the first planetary gear unit 24 My! /, Connected with the misalignment! /!
- the engine 8 is disposed on a common shaft center as long as it is operatively connected to the force directly connected to the input shaft 14, such as a gear or a belt. There is no need.
- the first motor Ml and the second motor M2 are arranged concentrically with the input shaft 14, the first motor Ml is connected to the first sun gear S1, and the second motor M2 is transmitted.
- the force connected to the member 18 does not necessarily have to be arranged as such, for example, via a gear, belt, speed reducer, etc., the first motor Ml is operatively connected to the first sun gear S1, and the second motor M2 is The transmission member 18 may be connected.
- the hydraulic friction engagement devices such as the first clutch C1 and the second clutch C2 are magnetic powder types such as a powder (magnetic powder) clutch, an electromagnetic clutch, and a meshing type dog clutch. It may be composed of an electromagnetic or mechanical engagement device.
- the hydraulic control circuit 70 is configured by a switching device, an electromagnetic switching device, or the like that switches an electrical command signal circuit of the electromagnetic clutch, not a valve device that switches an oil passage.
- the automatic transmission unit 20 is interposed in the power transmission path between the transmission member 18 that is the output member of the differential unit 11, that is, the power distribution mechanism 16, and the drive wheels 34.
- a continuously variable parallel two-shaft type that is well known as a continuously variable transmission (CVT), which is a type of automatic transmission, and a manual transmission
- the gear stage is automatically set by a select cylinder and a shift cylinder.
- Other types of transmissions (transmissions) such as an automatic transmission that can be switched and a synchronous mesh type manual transmission that can be switched by manual operation may be provided. Even in this way, the present invention can be applied.
- the automatic transmission unit 20 is provided with a counter shaft in parallel with the force input shaft 14 connected in series with the differential unit 11 via the transmission member 18, and on the counter shaft.
- An automatic transmission unit 20 may be disposed concentrically.
- the differential unit 11 and the automatic transmission unit 20 are composed of, for example, a counter gear pair, a sprocket and a chain as the transmission member 18. It is connected so that power can be transmitted through a set of transmission members.
- the power distribution mechanism 16 as the differential mechanism of the above-described embodiment includes, for example, a pinion that is rotationally driven by an engine, and a pair of forces that mesh with the pinion. It may be a differential gear device operatively connected to Ml and the transmission member 18 (second electric motor M2).
- the power distribution mechanism 16 of the above-described embodiment is composed of one set of planetary gear devices, but is composed of two or more planetary gear devices, and in a non-differential state (constant speed change state). It may function as a transmission with three or more stages.
- the planetary gear device is not limited to the single pinion type, and may be a double pinion type planetary gear device.
- the shift operating device 50 of the above-described embodiment selects a plurality of types of shift positions P.
- a switch capable of selecting a plurality of shift positions P such as a push button type switch and a slide type switch, or a manual operation Regardless of the driver's voice
- shift lever 52 is ⁇ M ''
- the gear stage may be set, that is, the highest speed gear stage of each shift range may be set as the gear stage.
- the automatic transmission unit 20 switches gears and executes a shift. For example, when the shift lever 52 is manually operated upshift position “+” or downshift position “one” in the “M” position, the automatic transmission unit 20 is in any one of the first gear to the fourth gear. Is set according to the operation of the shift lever 52.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Transmission Device (AREA)
- Hybrid Electric Vehicles (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2007800424971A CN101588951B (zh) | 2006-11-15 | 2007-11-06 | 车辆用驱动装置的控制装置 |
US12/311,466 US8246507B2 (en) | 2006-11-15 | 2007-11-06 | Control apparatus for vehicle drive system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-309505 | 2006-11-15 | ||
JP2006309505A JP4462259B2 (ja) | 2006-11-15 | 2006-11-15 | 車両用駆動装置の制御装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2008059729A1 true WO2008059729A1 (ja) | 2008-05-22 |
WO2008059729A9 WO2008059729A9 (ja) | 2009-07-02 |
Family
ID=39401538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/071527 WO2008059729A1 (ja) | 2006-11-15 | 2007-11-06 | 車両用駆動装置の制御装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8246507B2 (ja) |
JP (1) | JP4462259B2 (ja) |
CN (1) | CN101588951B (ja) |
WO (1) | WO2008059729A1 (ja) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4483879B2 (ja) * | 2007-03-09 | 2010-06-16 | トヨタ自動車株式会社 | 車両用駆動装置の制御装置 |
JP4605256B2 (ja) | 2008-06-10 | 2011-01-05 | トヨタ自動車株式会社 | 車両用動力伝達装置の制御装置 |
JP5334678B2 (ja) * | 2009-05-14 | 2013-11-06 | トヨタ自動車株式会社 | 車両駆動システムの制御装置 |
DE102010031545A1 (de) * | 2010-07-20 | 2012-01-26 | Sb Limotive Company Ltd. | Verfahren zur Zustandsüberwachung von Antriebssystemen, Batterie mit einem Modul zur Zustandsüberwachung sowie ein Kraftfahrzeug mit einer entsprechenden Batterie |
US8944949B2 (en) * | 2011-02-17 | 2015-02-03 | Gm Global Technology Operations, Llc | Multi-speed transmission with integrated electric motor |
JP5601246B2 (ja) * | 2011-03-03 | 2014-10-08 | トヨタ自動車株式会社 | ハイブリッド自動車 |
CN103534158A (zh) * | 2011-05-16 | 2014-01-22 | 丰田自动车株式会社 | 混合动力车辆的控制装置 |
WO2013132534A1 (ja) * | 2012-03-07 | 2013-09-12 | トヨタ自動車株式会社 | 車両の制御装置 |
US8589002B1 (en) * | 2012-07-30 | 2013-11-19 | General Electric Company | Methods and systems for estimating engine fuel consumption |
US8849527B2 (en) * | 2012-11-01 | 2014-09-30 | Caterpillar Inc. | Speed control for a machine with a continuously variable transmission |
JP5704151B2 (ja) * | 2012-11-28 | 2015-04-22 | トヨタ自動車株式会社 | 車両の制御装置 |
KR101406592B1 (ko) * | 2013-05-07 | 2014-06-11 | 기아자동차주식회사 | 가속페달 장치의 답력 능동 조절방법 |
JP6413776B2 (ja) * | 2015-01-14 | 2018-10-31 | スズキ株式会社 | 車両の駆動制御装置 |
DE102015011519B4 (de) * | 2015-09-03 | 2020-07-09 | Audi Ag | Verfahren zum Betreiben eines Mehrstufengetriebes in einem Kraftfahrzeug |
WO2018085974A1 (en) * | 2016-11-08 | 2018-05-17 | Guangxi Liugong Machinery Co., Ltd. | Multiple level work hydraulics anti-stall |
CA3122836A1 (en) | 2017-01-20 | 2018-07-26 | Polaris Industries Inc. | Diagnostic systems and methods of a continuously variable transmission |
JP6702358B2 (ja) | 2018-06-08 | 2020-06-03 | スズキ株式会社 | 回転数制御装置 |
KR20230162844A (ko) * | 2022-05-19 | 2023-11-29 | 현대자동차주식회사 | 하이브리드 자동차 및 이의 제어 방법 |
Citations (2)
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JP2005105957A (ja) * | 2003-09-30 | 2005-04-21 | Aisin Aw Co Ltd | 電動車両駆動制御装置及び電動車両駆動制御方法 |
JP2006046487A (ja) * | 2004-08-04 | 2006-02-16 | Toyota Motor Corp | 車両用駆動装置の制御装置 |
Family Cites Families (4)
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JP3918552B2 (ja) | 2001-12-26 | 2007-05-23 | アイシン・エィ・ダブリュ株式会社 | 電動車両駆動制御装置、電動車両駆動制御方法及びそのプログラム |
JP4209375B2 (ja) | 2003-12-08 | 2009-01-14 | トヨタ自動車株式会社 | 動力出力装置およびこれを搭載する自動車並びに動力出力装置の制御方法 |
JP4157504B2 (ja) | 2004-03-30 | 2008-10-01 | トヨタ自動車株式会社 | 動力出力装置およびこれを搭載するハイブリッド自動車並びに動力出力装置の制御方法 |
JP4229046B2 (ja) | 2004-10-25 | 2009-02-25 | トヨタ自動車株式会社 | 車両用駆動装置の制御装置 |
-
2006
- 2006-11-15 JP JP2006309505A patent/JP4462259B2/ja active Active
-
2007
- 2007-11-06 CN CN2007800424971A patent/CN101588951B/zh not_active Expired - Fee Related
- 2007-11-06 US US12/311,466 patent/US8246507B2/en not_active Expired - Fee Related
- 2007-11-06 WO PCT/JP2007/071527 patent/WO2008059729A1/ja active Search and Examination
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2005105957A (ja) * | 2003-09-30 | 2005-04-21 | Aisin Aw Co Ltd | 電動車両駆動制御装置及び電動車両駆動制御方法 |
JP2006046487A (ja) * | 2004-08-04 | 2006-02-16 | Toyota Motor Corp | 車両用駆動装置の制御装置 |
Also Published As
Publication number | Publication date |
---|---|
US20100069196A1 (en) | 2010-03-18 |
JP2008120352A (ja) | 2008-05-29 |
WO2008059729A9 (ja) | 2009-07-02 |
JP4462259B2 (ja) | 2010-05-12 |
CN101588951A (zh) | 2009-11-25 |
US8246507B2 (en) | 2012-08-21 |
CN101588951B (zh) | 2013-01-23 |
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