JP3099721B2 - Hybrid drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hybrid drive system having an engine and a motor generator as power sources, and more particularly, to a technique for shortening the distance between the shafts of the motor generator and the differential device to achieve a compact structure. Things.

[0002]

2. Description of the Related Art As a drive device for a vehicle such as an automobile,
(a) an engine operated by fuel combustion, a first motor generator, and an output member are provided on a first axis, while (b) a pair of output shafts are on a second axis substantially parallel to the first axis. And the input member rotatably disposed about the second axis is rotated according to the power transmitted from the output member, thereby distributing the power to the left and right drive wheels. A hybrid drive having a differential is known. Such a hybrid drive device is used by being disposed in such a manner that the first axis and the second axis are substantially parallel to the width direction of the vehicle as in an FF (front engine / front drive) vehicle. The device described in Japanese Patent Application Laid-Open No. 6-328951 is an example of such a device, in which a pair of driving and charging motor generators is provided on a first axis, and a pair of motor generators is provided between the driving and charging motor generators. Is provided with a gear type reduction mechanism, and power is transmitted to the differential device via the reduction mechanism.

[0003]

However, in such a conventional hybrid drive device, since the input member of the differential device is arranged so as not to interfere with the motor generator, the first and second axes are not connected to each other. The distance between axes is large,
There is a problem that the dimension in the direction perpendicular to the first axis increases, and the mountability on a vehicle is poor. In particular, since the input member of the differential device is generally made to have a large diameter for torque amplification,
The above problem becomes more pronounced.

The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce the distance between shafts between a differential device and a motor generator to make it compact.

[0005]

In order to achieve the above object, a first invention comprises (a) an engine operating by fuel combustion, a first motor generator, an output member, a second motor generator, a planetary gear mechanism, (B) a pair of output shafts are disposed on a second axis substantially parallel to the first axis, and are rotatably disposed around the second axis. When the provided input member is rotated according to the power transmitted from the output member,
(C) an outer peripheral portion of the input member is radially overlapped with the first motor generator while the outer peripheral portion of the input member is radially overlapped with the first motor generator; The input member of the differential device is decelerated and rotated through a gear-type speed reduction mechanism including a first intermediate shaft and a second intermediate shaft disposed on a third axis and a fourth axis substantially parallel to the one axis. it becomes as to be
(E) the output member is a sprocket;
Driven sprocket provided on the shaft through a chain
And the first intermediate shaft is connected to the
1 motor generator and the second motor generator
Outside of the small-diameter motor generator
It is characterized by having been done.

According to a second aspect, in the first aspect , (a )
While the driven sprocket is disposed diagonally above the sprocket, the input member is disposed at a position below the driven sprocket, while (b)
A predetermined amount of lubricating oil is filled in an accommodation space for accommodating the planetary gear mechanism, the speed reduction mechanism, the differential device, and the like, and is lubricated by an oil bath method.

[0007]

[0008]

In such a hybrid drive device, since the outer peripheral portion of the input member of the differential device overlaps the first motor generator in the radial direction, the distance between the two shafts is shortened by the overlap, and The dimension in the direction perpendicular to the first axis is reduced to be compact, and the mountability on the vehicle is improved.

[0009]

Further , since the output member is a sprocket for transmitting power via a chain, the thrust force hardly acts, the bearing means can be simplified, and the first intermediate shaft to which power is transmitted from the output member. Can be disposed apart from the output member , and the first motor generator and the second motor
Of small diameter motor generators
Is also arranged outside, so that other members such as an engine, which are arranged on the first axis, can be arranged close to each other in the axial direction, the axial dimension can be shortened, and the mountability to the vehicle is further improved. improves. That is, in the device described in Japanese Patent Application Laid-Open No. 6-328951, a large thrust force is generated because a helical gear is used as an output member, a large bearing is required for supporting the same, and a speed reduction mechanism is required. Needs to be arranged close to the first axis, there is a problem that the dimension between the pair of motor generators becomes large and the dimension in the axial direction becomes long.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Here, the first motor generator and the second motor generator do not necessarily have to function as both a driving electric motor and a charging generator. May just be done. In a hybrid drive device having a pair of motor generators, one motor generator is generally used mainly as an electric motor and used alone or together with an engine as a power source of a vehicle or the like. Also, regenerative braking and the like can be performed. The other motor generator is mainly used as a generator, and charges electric energy generated by being rotationally driven by an engine via a planetary gear mechanism to a power storage device such as a battery or supplies the electric energy to the one motor generator. However, if necessary, it can be used as an electric motor to apply a rotational force to the output member or start the engine. The first motor generator and the second motor generator of the present invention may be any one for driving and one for charging .

A preferred embodiment of the hybrid drive system according to the present invention includes: (a) an engine that operates by burning fuel; and (b) one of a sun gear and a carrier is connected to the engine, and a ring gear is connected to an output member. (C) a first planetary gear mechanism connected to the output member.
A motor generator and (d) a second motor generator connected to the other of the sun gear and the carrier are provided on a first axis. In this case, the first motor generator is mainly used as an electric motor, and the second motor generator is mainly used as a generator. The sun gear and carrier of the planetary gear mechanism are
It is sufficient that the sun gear is connected to the second motor generator and the carrier is connected to the engine.
Since the engine rotation can be reduced, loss of the engine and the like can be reduced, which is desirable. By providing a clutch that connects and disconnects between the planetary gear mechanism and the engine or the second motor generator, or a clutch that connects and disconnects two of the sun gear, carrier, and ring gear as necessary,
It is possible to set a neutral state and effectively transmit the engine output.

The arrangement on the first axis is, for example, an engine, a damper device provided on an output shaft of the engine, a second motor generator, an output member, a planetary gear mechanism, and a first motor generator. However, the arrangement of the output member may be determined as appropriate, for example, the output member may be disposed adjacent to the first motor generator on the side opposite to the planetary gear mechanism . Also, between the engine and the planetary gear mechanism, in order to absorb the rotational fluctuation of the engine, for example, it is desirable to dispose a damper device according to the elastic member of the spring or rubber.

As the differential device, a bevel gear type differential device is preferably used, but a planetary gear type differential device can also be used. The positional relationship between the first axis to the fourth axis is such that, for example, the third axis, which is the axis of the first intermediate axis, is set obliquely above the first axis in the vehicle rear side when viewed from the side of the vehicle, and The fourth axis, which is the axis of the shaft, is set obliquely below and behind the third axis, and the second axis, which is the center axis of the differential, is the fourth axis.
It is set at a position below the axis. With this configuration, a space is created above the main shaft, that is, the first axis, so that components such as the M / G controller (inverter) and the power storage device can be arranged in this portion, and the reduction gear is arranged rearward. As a result, a space allowing deformation at the time of collision can be secured on the front side. A plurality of speed change gear pairs and a switching clutch may be provided on the first intermediate shaft and the second intermediate shaft to form a stepped transmission mechanism, a forward / reverse switching mechanism, and the like.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a skeleton view of a hybrid drive device 40 according to one embodiment of the present invention, and FIGS. 2 and 3 are exploded sectional views showing a specific configuration thereof. The hybrid drive device 40 is for an FF vehicle, that is, a horizontal drive device that is disposed substantially parallel to the width direction of the vehicle. The hybrid drive device 40 includes an engine 42 such as an internal combustion engine that operates by burning fuel, a second motor generator 44, A pinion type planetary gear mechanism 46 and a first motor generator 48 are provided.
The planetary gear mechanism 46 mechanically combines and distributes force, and includes a carrier 46 connected to the engine 42.
c, a sun gear 46 s connected to the rotor 44 r of the second motor generator 44,
8 and a ring gear 46r connected to a sprocket 50 as an output member, and mainly distributes the power transmitted from the engine 42 to the second motor generator 44 and the sprocket 50. The second motor generator 44 is mainly used as a generator, and supplies electric energy generated by being rotationally driven by the engine 42 via the planetary gear mechanism 46 to the first motor generator 48 or charges a power storage device such as a battery. Or On the other hand, the first motor generator 48 is mainly used as an electric motor,
The first motor generator 48, which is used alone or together with the engine 42 as a power source of the vehicle and requires a large torque, is larger (larger diameter) than the second motor generator 44 and contributes to shortening the overall length. The output of the engine 42 is transmitted to the planetary gear mechanism 46 via a flywheel 52 for suppressing rotation fluctuations and torque fluctuations and a damper device 54 made of an elastic member such as a spring or rubber or a viscous body.

The sprocket 50 is connected via a chain 62 to a driven sprocket 60 provided on a first intermediate shaft 58 constituting a speed reduction mechanism 56.
The speed reduction mechanism 56 includes a second intermediate shaft 64 parallel to the first intermediate shaft 58. The speed is reduced by a pair of reduction gears 66 and 68 meshed with each other.
Bevel gear type differential device 72
To transmit power. The output gear 70 is meshed with a large-diameter ring gear 74 which is an input member of the differential device 72. The ring gear 74 is further rotated at a reduced speed, and the left and right driving wheels ( Power is distributed to the front wheels). The reduction gear 68 of the second intermediate shaft 64 is integrally provided with a parking gear 80 for a mechanical parking device .

As apparent from FIGS. 2 and 3, the engine 42, the flywheel 52, the damper 54,
The second motor generator 44, the sprocket 50, the planetary gear mechanism 46, and the first motor generator 48
Aligned axially substantially horizontal first upper axis O ₁ in this order are disposed adjacent to each other. That is, the sprocket 50 is disposed adjacent to the planetary gear mechanism 46 on the opposite side to the first motor generator 48, and the second motor generator 44 is disposed adjacent to the sprocket 50 on the opposite side to the planetary gear mechanism 46, The engine 42 is arranged on the opposite side of the sprocket 50 with respect to the second motor generator 44. The sun gear 46 s of the planetary gear mechanism 46 is integrally provided with a cylindrical shaft portion 82, which is inserted through the inner peripheral portion of the sprocket 50 so as to be relatively rotatable, and is relatively rotated by the rotor 44 r of the second motor generator 44. It is impossible to spline fit. An input shaft 84 is provided so as to be rotatable relative to the shaft 82 and the shaft of the rotor 44r, and the inner peripheral member of the damper device 54 is disposed at an end on the second motor generator 44 side. A carrier 46c of a planetary gear mechanism 46 is integrally provided at the other end with a spline fit non-rotatably, and a sun gear 46s and a ring gear 46r.
Are rotatably supported by a plurality of planetary gears meshed with both. The shaft 82 functions as a connection shaft that connects the planetary gear mechanism 46 and the second motor generator 44.

The outer peripheral member of the damper device 54 is integrally fixed to the flywheel 52, and the flywheel 52 is connected to the crankshaft 86 of the engine 42.
It is fixedly installed integrally. The flywheel 52 is the second
The damper device 54 is disposed close to the motor generator 44, and is disposed in a space on the inner peripheral side of the stator coil 88 protruding from the end of the second motor generator 44. Further, the planetary gear mechanism 46 is disposed in a space on the inner peripheral side of the stator coil 90 protruding from an end of the first motor generator 48 having a large diameter.
The only gap left between the second motor generator 44 and the first motor generator 48 is such that the chain 62 can pass through. The crankshaft 86 corresponds to the output shaft of the engine 42.

The reduction mechanism 56 has a posture in which the axes of the first intermediate shaft 58 and the second intermediate shaft 64 are located on the third axis O ₃ and the fourth axis O ₄ parallel to the first axis O ₁ , respectively. The driven sprocket 60 and the output gear 70 are provided at substantially the same position as the sprocket 50 in the axial direction.
And the reduction gear pairs 66 and 68 are located at substantially the same position as the small-diameter second motor generator 44, that is, on the outer peripheral side of the second motor generator 44. Further, the differential device 72 is disposed so that the axis of the pair of output shafts 76 and 78 is located on the second axis O ₂ parallel to the first axis O _1, and the sprocket 50 is arranged in the axial direction.
The large-diameter ring gear 74 is located at approximately the same position as
A differential case 92 accommodating the differential gear mechanism is located at substantially the same position as the small-diameter second motor generator 44, and one of the smallest diameter differential cases 92 is located at substantially the same position as the large-diameter flywheel 52. A bearing 94 is located. The outer periphery of the ring gear 74 is inserted into the gap between the second motor generator 44 and the first motor generator 48 so as not to interfere with the chain 62.
That is, as is clear from FIG. 4 showing a cross section including the first axis O ₁ and the second axis O ₂ (IV-IV cross section in FIG. 5) and FIG. Of the first motor generator 48 and the second motor generator 44 in the radial direction. The outer peripheral portion of the driven sprocket 60 of the first intermediate shaft 58 is also connected to the second motor generator 4.
4 and a gap between the first motor generator 48.

FIG. 5 is a diagram showing the positional relationship between the first axis O ₁ to the fourth axis O _{4 when} viewed from the side of the vehicle, and FIG. 6 is a diagram showing the positional relationship between them in a plan view. The left side is also the front of the vehicle. As is apparent from these figures, the third axis O ₃ , which is the axis of the first intermediate shaft 58 of the reduction mechanism 56, is set obliquely above the first axis O ₁ on the vehicle rear side, and The fourth axis O _4, which is the axis of the intermediate shaft 64, is set obliquely below and behind the third axis O ₃ , and
The second axis O ₂ is the central axis of the lower position of the fourth axis O _4, that is, set at the lowermost end.

Between the damper device 54 and the second motor generator 44, a first partition wall 98 provided integrally with a first case member 96 fixed to the engine 42 is provided. And the first case member 9
6, a second partition (motor cover) 100 is integrally fixed, and a motor space 10 formed between them is provided.
2 houses a rotor 44r and a stator 44s of the second motor generator 44. Second partition 100
Inside the motor space 102, a resolver 104 is disposed as a rotational position detecting means in a space on the inner peripheral side of the stator coil 88.
A support member 106 is integrally fixed on the outer side of the shaft, and supports the sprocket 50 via a needle bearing so as to be rotatable around an axis. The sprocket 50 is spline-fitted to the ring gear 46r of the planetary gear mechanism 46 so as to be relatively non-rotatable, and can be easily assembled.

The support member 106 is provided with the sun gear 46.
The lubricating oil passage to the planetary gear mechanism 46 and the like is formed in the support member 106, and the lubricating oil passage to the input shaft 84 is formed in the shaft 82. Is formed. The stator 44s of the second motor generator 44 is integrally fixed to the first case member 96, and the rotor 44r is rotatably supported around the axis by the partition walls 98 and 100 via a pair of ball bearings. And can independently inspect motor performance (including performance as a generator). Further, an oil seal is provided between the first partition 98 and the rotor 44r and between the support member 106 integrally fixed to the second partition 98 and the rotor 44r in a liquid-tight manner.
Lubricating oil and the like cannot enter the motor space 102. The space between the first partition 98 and the input shaft 84 is also liquid-tightly sealed by an oil seal, so that the lubricating oil supplied between the input shaft 84 and the rotor 44r or the shaft 82 leaks out. Preventing.

The first case member 96 is provided with a second case member 110 integrally provided with a third partition 108 integrally therewith.
An accommodation space 112 for accommodating the sprocket 50, the speed reduction mechanism 56, the differential device 72, and the like is formed between the first case member 96, the second partition wall 100, and the second case member 110. The housing space 112 is filled with a predetermined amount of lubricating oil, and lubricates the meshing portion and the bearing portion of the gear by an oil bath method. A pair of output shafts 76 of the differential device 72,
An oil seal seals between the second case member 78 and the second case member 110 and the first case member 96, respectively.
Leakage of the lubricating oil from the storage space 112 is prevented.

The third partition 108 is disposed between the planetary gear mechanism 46 and the first motor generator 48, and the third case member 114 is attached to the second case member 110.
Are integrally fixed to form a motor space 116 for accommodating the rotor 48r, the stator 48s, and the like of the first motor generator 48. Third case member 114
, A resolver 118 is provided as a rotational position detecting means in a space on the inner peripheral side of the stator coil 90. The stator 48s of the first motor generator 48
While being integrally fixed to the case member 114,
The rotor 48r is rotatably supported around the axis through a pair of ball bearings by the third partition 108 and the third case member 114, and independently inspects the motor performance (including the performance as a generator). it can.
An oil seal seals the space between the rotor 48r and the third partition 108 in a liquid-tight manner so that the lubricating oil in the housing space 112 cannot enter the motor space 116 and the rotor protrudes from the partition 108. 48
A ring gear 46r of the planetary gear mechanism 46 is spline-fitted to the end of the ring gear r so that it cannot rotate relatively. The input shaft 84 is supported by the rotor 48r and the rotor 44r so as to be relatively rotatable around an axis. The input shaft 84 has a lubricating oil passage for guiding lubricating oil to a support portion or the like in the axial direction or the radial direction. Is formed.

On the other hand, the hybrid drive device 40 has a control circuit shown in FIG. 7, and the operation of the engine 42 is controlled by the controller 120 controlling the throttle valve opening, fuel injection amount, ignition timing and the like. The state is controlled. The first motor generator 48 and the second motor generator 44 are respectively connected to the first M / G controller 12
2, connected to a power storage device 126, such as a battery, via a second M / G controller 124, and the controller 120 supplies electric energy from the power storage device 126 or the other motor generator in a power generation state to a predetermined energy. A rotational driving state in which the electric power is charged by the regenerative braking (electric braking torque of the motor generator itself), and a charging state in which the power storage device 126 is charged with electric energy.
Is switched to a no-load state allowing free rotation.

The controller 120 includes a CPU, a RAM,
The microcomputer is configured to include a microcomputer having a ROM and the like, and performs signal processing according to a preset program, thereby, for example, setting the second motor generator 44 to a no-load state and rotatingly driving the first motor generator 48, and While the motor is running with only one motor generator 48 as a power source, the second motor generator 44 is functioning as a generator and a reaction force member, and the first motor generator 48 is in a no-load state while running with only the engine 42 as a power source. Second
The charge traveling in which the electric storage device 126 is charged by the motor generator 44, the electric energy generated by the second motor generator 44 while the second motor generator 44 functions as a generator, and the vehicle travels using the engine 42 and the first motor generator 48 as power sources. Regenerative braking control for regenerative braking by making the first motor generator 48 function as a generator at the time of engine / motor running by electric energy stored in the power storage device 126, brake operation during vehicle running, etc., and the second motor generator 44 at vehicle stop Is operated as a generator, the engine 42 is operated, and charge control for charging the power storage device 126 exclusively by the second motor generator 44 is performed. The controller 120 includes information necessary for switching the above-described respective controls according to the driving state, for example, information regarding an accelerator operation amount and a vehicle speed, a storage amount of the power storage device 126, presence or absence of a brake operation, a shift lever operation range, and the like. It is supplied from various detection means.

Here, in the hybrid drive unit 40 of the present embodiment, since the outer peripheral portion of the ring gear 74 of the differential device 72 overlaps the first motor generator 48 and the second motor generator 44 in the radial direction, the overlapping portion is provided. only the center distance therebetween is shortened, the size of the first axis O ₁ and perpendicular direction is made compact becomes small, mountability on a vehicle is improved.

Since the ring gear 74 is disposed at substantially the same position as the sprocket 50 in the axial direction, the sprocket 50 having a generally small diameter for amplifying torque is used.
And the ring gear 74 having a large diameter can be arranged close to each other in a direction perpendicular to the first axis O ₁ , so that the apparatus is configured more compactly. In particular, since the differential case 92 having the medium diameter and the second motor generator 44 are located at substantially the same position, and the large diameter flywheel 52 and the smallest diameter bearing 94 are located at substantially the same position, the flywheel 52 Axis O _{1, on} which the second motor generator 44, the first motor generator 48, and the like are disposed, and the differential device 72.
That is, the second axis O ₂ can be arranged close to the first axis O ₂ and the axial dimension can be shortened.

Since the sprocket 50 is used as an output member and power is transmitted through the chain 62, a thrust load does not basically act on the sprocket 50. It can be rotatably supported simply by a needle bearing, and its axial dimension is shorter than when it is supported by a ball bearing or the like. Since the output is performed using the chain 62, the degree of freedom of the position of the first intermediate shaft 58 of the reduction mechanism 56 to which the power is transmitted from the sprocket 50 is increased, and the second motor generator 44 having a small diameter is separated from the sprocket 50. , The second motor generator 44 is connected to the sprocket 50
, And the axial dimension is also reduced in this regard. Since the reduction mechanism 56 is disposed on the outer peripheral side of the small-diameter second motor generator 44, the first axis O ₁
The dimension in the radial direction perpendicular to the above can be kept small.

The large-diameter first motor generator 48
The planetary gear mechanism 46 is disposed in a space formed on the inner peripheral side of the stator coil 90 protruding from the end of the first motor generator 48, and a third motor generator 48 is provided between the planetary gear mechanism 46 and the first motor generator 48. Since the partition wall 108 is provided, the axial dimension occupied by the planetary gear mechanism 46 can be reduced while preventing lubricating oil from entering the motor space 116 and preventing the planetary gear mechanism 46 from being affected by heat. Also for the damper device 54, the stator coil 8 of the second motor generator 44
8, the axial dimension is further reduced, and a first partition 98 is provided between the damper device 54 and the second motor generator 44. Therefore, there is no possibility that foreign substances such as lubricating oil and dust enter the motor space 102.

As described above, in the hybrid drive device 40 according to the present embodiment, the axial dimension and the radial dimension (center distance) perpendicular to the axial dimension are comprehensively reduced, so that the hybrid drive apparatus 40 is configured to be small and compact, and can be mounted on a vehicle. The mountability is improved.

Further, both the second motor generator 44 and the first motor generator 48
0, 108, and the third case member 114, and the inside of the motor spaces 102, 116 is liquid-tightly sealed by an oil seal. The motor performance (generator performance) is well maintained and high reliability can be obtained without lubricating oil or the like entering and causing malfunction.

Further, since it is adapted to output with the chain 62, as compared with the case of disposing the large-diameter gear meshing with each other, for example, on the first shaft line O ₁ and on the third axis O ₃ In addition, energy loss due to stirring of the lubricating oil is small, and the weight can be reduced.

The third axis O ₃ , which is the axis of the first intermediate shaft 58 of the speed reduction mechanism 56, is set diagonally above the first axis O ₁ on the vehicle rear side, and the axis of the second intermediate shaft 64. The fourth axis O _{4, which} is the center, is set obliquely below and behind the third axis O ₃ , and the second axis O _2, which is the central axis of the differential gear 72, is the fourth axis O 4.
Since it is set at a position below the axis O ₄ , that is, at the lowermost end, it is located above the first axis O ₁ , that is, the engine 42 and the second
Motor generator 44, first motor generator 48
A space is created above the M / G controller 122, 1
24 and a power storage device 126 can be arranged. Further, since the speed reduction mechanism 56 is disposed rearward, a sufficient space for allowing deformation at the time of collision can be secured on the front side of the engine 42, the second motor generator 44, and the first motor generator 48.

The embodiment of the present invention has been described in detail with reference to the drawings. However, these are merely specific examples, and the present invention has various modifications and improvements based on the knowledge of those skilled in the art. It can be implemented in embodiments.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating a schematic configuration of a hybrid drive device according to an embodiment of the present invention.

2 is an exploded cross-sectional view illustrating a specific configuration of the hybrid drive device of FIG. 1 together with FIG.

FIG. 3 is an exploded cross-sectional view illustrating a specific configuration of the hybrid drive device of FIG. 1 together with FIG. 2;

FIG. 4 shows a first axis O ₁ and a second axis O ₁ in the embodiment of FIG. 1;
FIG. 6 is a diagram illustrating a cross section including the axis O ₂ , and is a diagram corresponding to a cross section taken along line IV-IV in FIG.

FIG. 5 is a diagram showing a positional relationship between axes of the hybrid drive device of FIG. 1 when viewed from the side of the vehicle.

FIG. 6 is a diagram showing a positional relationship of each axis in a plan view of the hybrid drive device of FIG. 1;

FIG. 7 is a block diagram illustrating a control system included in the hybrid drive device of FIG. 1;

[Description of Signs] 40: Hybrid drive device 42: Engine 44: Second motor generator 46: Planetary gear mechanism 48: First motor generator 50: Sprocket (output member) 56: Reduction mechanism 58: First intermediate shaft 60: Driven sprocket 62: chain 64: second intermediate shaft 72: differential gear 74: ring gear (input member) 112: receiving space O _1: the first axis O _2: the second axis O _3: third axis O _4: 4th axis

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Ryuji Ibaraki 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation (56) References JP-A-8-33118 (JP, A) JP-A-6-328951 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60K 17/04 B60K 6/02 B60L 11/00-11/14

Claims (2)

(57) [Claims] 1. An engine operating by combustion of fuel, a first motor generator, an output member, a second motor generator, and a planetary gear mechanism are provided on a first axis, while a pair of output shafts are connected to the first axis. The input member is disposed so as to be located on a second axis substantially parallel to the axis, and the input member rotatably disposed around the second axis is rotated according to the power transmitted from the output member. A hybrid drive device having a differential device for distributing the driving force to the left and right drive wheels, wherein an outer peripheral portion of the input member overlaps the first motor generator in a radial direction, and a third portion substantially parallel to the first axis line. The input member of the differential device is rotated at a reduced speed via a gear type reduction mechanism including a first intermediate shaft and a second intermediate shaft disposed on an axis and a fourth axis, respectively. And, wherein the output member is a sprocket provided on the first intermediate shaft
Connected to the driven sprocket
And the first intermediate shaft is connected to the first motor
Generator and the second motor generator
A hybrid drive device provided outside a motor generator having a diameter . 2. The planetary gear mechanism according to claim 1 , wherein the driven sprocket is disposed obliquely above the sprocket, and the input member is disposed below the driven sprocket. A hybrid drive device, wherein a predetermined amount of lubricating oil is filled in a housing space for housing a mechanism, the differential device, and the like, and is lubricated by an oil bath method.