JPH11147424A - Vehicle driving system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save electrical power by driving auxiliaries by a motor generator, with engine stopped, in an ecological running mode. SOLUTION: In this vehicle driving system, a motor generator 3, an engine 1 and auxiliaries are connected by pulley 9 and a belt 8. A clutch for switching between transmission/non-transmission of the power between the motor generator 3 and the engine 1 is provided. A battery 5 is connected to the motor generator 3 via an inverter 9. When the engine stops, the clutch is disengaged and auxiliaries are driven by the motor generator.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle drive device having an engine and a motor.

[0002]

2. Description of the Related Art A configuration in which a motor generator is connected to an engine via a power distribution mechanism is conventionally known, for example, from Japanese Patent Laid-Open No. 9-39613. Then, when the vehicle is stopped in the eco-run mode, the supply of fuel to the engine is stopped to reduce the fuel consumption, and the engine is maintained at idle rotation by the motor generator. The reason why the engine is maintained at the idling speed is that it is necessary to operate auxiliary equipment such as a compressor for an air conditioner and a pump for a power steering connected to the engine even when the vehicle is stopped.

[0003]

According to the configuration of the prior art described above, electric motors for driving auxiliary equipment such as a compressor for an air conditioner and a pump for a power steering are not required. Can save space.

However, in the above prior art, since the engine speed is maintained at the idle speed by the motor generator and the auxiliary equipment is operated, the power consumption of the motor generator tends to increase as the engine rotates. is there. Since the motor generator is usually driven using the power source of the battery mounted on the vehicle, the battery consumption increases when the vehicle stops frequently, so that it is necessary to mount a battery with a large capacity in the vehicle. Will come.

Accordingly, in view of the above problems, it is a technical object of the present invention to drive an auxiliary device by a motor generator when a vehicle is stopped with less power than before.

[0006]

According to the first aspect of the present invention, there is provided a vehicle drive apparatus including an engine and a motor connected to an engine drive shaft, the motor drive shaft comprising: A transmission mechanism is provided between the engine drive shaft and the motor so that the rotation can be transmitted to the engine drive shaft while being shifted, and further, an auxiliary machine is mechanically connected to the motor rotation shaft. When driving the auxiliary equipment, the rotation of the motor rotation shaft is not transmitted to the engine drive shaft.

[0007] The vehicle drive device according to claim 2 is
An engine and an accessory that can be connected to the engine drive shaft, and a motor that is mechanically connected to the engine drive shaft and that can be operated by the electric energy of the electric energy source, so that the driving force of the motor can be transmitted to the accessory. Means for connecting or disconnecting the engine drive shaft and the motor are provided between the engine and the motor, and switching means for switching the connection or disconnection state is provided.

Further, in the vehicle drive device according to the third aspect, in the vehicle drive device according to the second aspect, at least the rotation speed of the motor rotation shaft can be changed between the motor rotation shaft and the engine drive shaft. A mechanism was provided.

According to the fourth aspect of the present invention, the first aspect is provided.
According to a fourth aspect of the present invention, there is provided a motor generator having a rotation function for operating by the electric energy of an electric energy source and a power generation function for operating by the mechanical energy of the engine.

The vehicle driving device according to the first to third aspects may be such that a separate generator is connected to the engine drive shaft in addition to the motor. It may be an integral so-called motor generator having a power generation function, and any form is included. In addition, the connection between the engine and the motor may be a connection using a pulley / belt, a chain / sprocket, a gear, or the like. Of course, other connection methods may be used.

Therefore, according to the first aspect of the present invention, when the engine is started by the motor, the rotation of the motor rotation shaft is transmitted to the engine drive shaft after the speed is changed, so that a sufficient torque is taken out from the motor. It is possible,
The motor itself can be reduced in size. When the auxiliary machine is driven by the motor when the engine is stopped, the rotation of the motor rotation shaft is not transmitted to the engine drive shaft, and only the auxiliary machine is driven by the motor and the engine is not driven. In addition, the auxiliary machine can be driven with low power.

According to the second aspect, when the engine is stopped, the connection between the motor and the engine drive shaft is released, and the auxiliary machine is driven by the motor. Therefore, the auxiliary machine can be driven with a small amount of power that does not drive the engine.

According to the third aspect, a sufficient torque can be taken out from the motor by the transmission mechanism, and the motor itself can be reduced in size. Therefore, the vehicle drive device according to the second aspect can be further reduced in size. is there.

According to the fourth aspect, the motor can be used as a generator by using a so-called motor generator.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a system configuration diagram of a vehicle drive device according to a first embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes an engine mounted on a vehicle, 2 denotes an automatic transmission (referred to as A / T), and 3 denotes a motor generator (hereinafter referred to as M / G) functioning as a motor and a generator. And a pulley 23, a belt 8,
It is connected via a pulley 22. An electromagnetic clutch 26 capable of transmitting and not transmitting power is provided between the pulley 23 and the engine crankshaft. Furthermore, M / G
3 is an oil pump 19 and an electromagnetic clutch 27 for A / T2.
Are connected via 24 is the oil pump 1
Reference numeral 9 denotes an oil inlet pipe, and reference numeral 25 denotes an oil outlet pipe of the oil pump 19. Reference numerals 11 and 16 denote auxiliary equipment, for example, a pump for power steering and a compressor for air conditioner, respectively, the crankshaft of the engine 1 and the M / G3.
Are connected to the pulleys 9 and 14 and the belt 8. Although not shown in FIG. 1, other auxiliary equipment such as an engine oil pump and an engine water pump are also connected. Reference numeral 4 denotes an inverter electrically connected to the M / G 3. The inverter 4 changes the supply of electric energy from the battery 5 as a power source to the M / G 3 by switching, thereby changing the rotation speed of the M / G 3. Further, switching is performed so that electric energy is charged from the M / G 3 to the battery 5. Reference numeral 7 denotes a controller for controlling the intermittent operation of the electromagnetic clutches 26 and 27 and the switching control of the inverter 4.
As the input signals, the M / G3 rotation speed, the eco-run mode switch signal, and the air conditioner operation switch signal are input to the controller. Arrows in FIG. 1 indicate signal lines.

Next, the operation of the first embodiment will be described. The M / G 3 is driven to start the engine 1. After the start of the engine 1, the M / G 3 functions as a generator, and stores electric energy in the battery 5. The charging of the electric energy is preferably performed, for example, at the time of braking of the vehicle. At the time of starting the engine, the controller 7 detects the rotation speed of the M / G 3 and switches the inverter 4 so that the torque and the rotation speed required for starting the engine 1 are obtained. For example, if the switch signal of the air conditioner is turned on at the time of starting the engine, a larger torque is required for starting the engine than when the air conditioner is turned off. And outputs a switching control signal to the inverter 4. The switching control signal to be outputted can be determined by taking various state signals of the engine 1, the A / T 2 and the vehicle into the controller 7 and referring to a map memory in the controller 7, or from the various state signals. It can also be obtained by calculation in the calculation device in the above. When starting the engine, the electromagnetic clutch 26,
27 is in a connected state.

Next, when the vehicle is stopped and the eco-run mode signal is turned on, the controller 7 outputs a signal to cut off the supply of fuel to the engine 1 and stops the engine. The output signal line of the fuel supply cut is omitted in FIG. The eco-run mode signal is, for example,
The data is input to the controller 7 when the driver presses a switch provided in the vehicle. The condition of the eco-run operation in the eco-run mode includes, for example, that the vehicle speed is zero and the range of the shift lever is D or N. In this state, the controller 7 outputs a disconnection control signal to the electromagnetic clutch 26, and the pulley 2
2 and the engine 1 are in a power non-transmission state. On the other hand, the electromagnetic clutch 27 is set in a connected state so that the A / T oil pump 19 can be driven by the M / G3. This is because the start clutch in the A / T 2 (not shown) can be immediately engaged so that the vehicle can start immediately after the engine is stopped and restarted.

On the other hand, since the air conditioner and the power steering should be operated even when the engine 1 is stopped, the number of rotations according to the load of the power steering pump 11, the load of the air conditioner compressor, and the load of the A / T oil pump 19 are determined. The controller 7 outputs a switching control signal to the inverter 4 so that the M / G rotates with the torque. When the engine 1 is restarted from the vehicle stopped state, the electromagnetic clutches 26 and 27 are connected, and the M / G 3 is rotated at an appropriate rotation speed and torque.

In the vehicle drive device of the first embodiment,
Since the engine 1 is stopped while the vehicle is stopped, the power steering pump 11 and the air conditioner compressor 16 are driven by the M / G 3, and the driving force of the M / G 3 is not transmitted to the engine 1. The M / G keeps the engine at idle speed and requires less power than those that drive air conditioner compressors and power steering pumps. The driving means of the power steering pump 11 and the air conditioner compressor 16 is changed to M / G.
3, the system configuration can be simplified.

FIG. 2 is an explanatory diagram of a second embodiment of the present invention. The difference from the first embodiment of FIG.
Are arranged coaxially with the pulley 23, and the pulley 23 and the pulley 29
An electromagnetic clutch 28 for intermittently transmitting power between the engine 1 and the M / G 3 is provided between the pulley 22 and the pulley 22 and the pulley 29 on the engine 1 side.

The driving of the auxiliary devices while the engine is stopped in the eco-run mode is the same as in the first embodiment. Thus, the provision of the electromagnetic clutch 28 on the M / G3 side is the first
It is possible to reduce the size, weight, and cost of the electromagnetic clutch 28 as compared with the embodiment. Further, the torque transmission capacity can be small.

FIGS. 3 and 4 are explanatory diagrams of a third embodiment of the present invention. FIG. 3 shows the speed reduction mechanisms 33, 34, 35, the brake 31, and the clutch 3 between the M / G 3 and the pulley 23 in FIG.
FIG. 4 shows a configuration in which the speed reduction mechanisms 33, 34, 35 and the brake 31, 31 are provided between the M / G 3 and the pulley 23 in FIG.
This is a configuration in which a clutch 32 is provided. 33 is a sun gear, 34 is a carrier, and 35 is a ring gear. M / G
When the engine 3 cranks (drives) the engine 1, the brake 31 is turned on and the clutch 32 is turned off, so that the rotational power of the M / G 3 is transferred from the sun gear 33 to the carrier 34.
Is transmitted at a reduced speed. Thereby, even if the M / G 3 and the inverter 4 are made smaller, the driving force necessary for cranking the engine 1 can be secured.

Next, when driving the power steering pump 11 and the air conditioner compressor 16 as accessories using the M / G 3 when the engine 1 is stopped, the brake 3
1 is turned off and the clutch 32 is turned on. At this time,
Electromagnetic clutch 27 is ON, electromagnetic clutch 26 is OF
Leave in F state. In this way, the M / G 3 and the pulley 23 are directly connected, and the number of rotations required to drive the accessories 11 and 16 can be secured.

When the engine 1 is operating, the M / G
3 is used as a generator and the auxiliary equipments 11 and 16 are driven, the brake 31 is turned off and the clutch 32 is turned off.
Set to N. At this time, the electromagnetic clutch 27 is turned off and the electromagnetic clutch 26 is turned on. In this way, even if the M / G 3 and the pulley 23 are directly connected to each other and the rotation speed of the engine 1 is in a high rotation range, it is possible to prevent the M / G 3 and other accessories from exceeding the allowable rotation speed.

FIGS. 5, 6, and 7 are explanatory views of a fourth embodiment of the present invention. FIG. 5 shows a system configuration of the fourth embodiment, and FIG. 6 shows a detailed sectional view of the motor generator 3 and the speed reducer 15. FIG. 7 is a sectional view of a main part when the speed reducer 15 is viewed from the axial direction.

In FIG. 5, reference numeral 1 denotes an engine, 2 denotes an automatic transmission (referred to as A / T), and 3 denotes a motor / generator (hereinafter referred to as M / G) acting as a motor and a generator. The crankshaft 17, which is the drive shaft of the engine 1, and the rotating shaft of the M / G3 are spaced apart and parallel to each other. A speed reducer 15 is interposed between the M / G 3 and the crankshaft 17, and the rotation of the rotating shaft of the M / G 3 is reduced and can be transmitted to the crankshaft 17. 1
Reference numeral 2 denotes a crank-side sprocket that is connected and fixed to the crankshaft 17, and reference numeral 13 denotes an M / G-side sprocket that is connected and fixed to a rotating element of the speed reducer 15, which will be described later. A chain 18 extends between the crank sprocket 12 and the M / G sprocket 13. These crank side sprocket 12, M / G side sprocket 13, chain 18
Corresponds to a power transmission means provided between the M / G 3 and the engine.

In FIG. 5, reference numerals 11 and 16 denote power steering pumps and air conditioner compressors, which are auxiliary equipments, and reference numeral 10 denotes an M / G3.
The pulleys 9, 10, and 14 have belts laid thereon. The pulleys 9, 10, 14 and the belt 8 correspond to power transmission means for transmitting the rotation of the M / G3 rotation shaft to the auxiliary machines 11, 16. In FIG. 5, the M / G-side sprocket 13 and the pulley 10 appear to be coaxially and integrally connected to the M / G rotation shaft, as described later.
The G-side sprocket 13 and the pulley 10 do not always rotate at the same speed, and are independent for transmitting the rotational force.

Reference numeral 4 denotes an inverter electrically connected to the M / G 3, which varies the supply of electric energy from the battery 5, which is a power source, to the M / G 3 by switching to change the rotation speed of the M / G 3. To Further, switching is performed so that electric energy is charged from the M / G 3 to the battery 5.

The M / G 3 is connected to an A / T 2 oil pump 19 via an electromagnetic clutch 27. 24 is an oil inlet pipe of the oil pump 19, and 25 is an oil outlet pipe of the oil pump 19. This is because, for example, when the engine is stopped in the eco-run mode, the electromagnetic clutch 2
7 so that the oil pump 19 can be driven by the M / G3 so that the vehicle can start immediately when the engine is restarted, so that the start clutch (not shown) in the A / T2 can be immediately engaged. belongs to.

In FIG. 5, reference numeral 7 denotes a switching control signal output to the inverter 4 or an electromagnetic clutch 27
It is a controller for outputting an N-OFF control signal or for outputting an ON-OFF control signal to an electromagnetic coil of the speed reducer 15 described later. In the controller 7, in addition to the M / G3 speed signal, the eco-run mode switch signal, the air conditioner switch signal, the engine speed signal such as the engine speed, the vehicle speed signal such as the vehicle speed, and the shift lever, are in any range. A / T2 status signal, such as whether or not the device is operating, can be input. And
Appropriate control signals are output to the control devices such as the speed reducer 15, the inverter 4, the electromagnetic clutch 27, etc. based on the information of these input signals. The controller 7 can employ a so-called computer system including a known CPU, RAM, ROM, bus, interface, attached memory, and the like.

Next, the detailed structure of the M / G 3 and the speed reducer 15 will be described with reference to FIG. The M / G 3 has a casing 36 fixed to a flange 38 of a cylinder block 37 of the engine 1 by bolts 40 so that a rotation shaft 39 of the M / G 3 is parallel to the crankshaft. A stator 41 is disposed in the casing 36, and a rotor 42 is provided to face the stator 41.
2 and integrally rotates with the rotor 42. Reference numeral 43 denotes a radial bearing for rotatably supporting the rotating shaft 39.

A sun gear 45 of a planetary gear unit 44 is formed integrally with the rotating shaft 39, and three pinion gears 46 are arranged at equal intervals of 120 ° on the outer periphery thereof and mesh with the sun gear 45. The three pinion gears 46 are allowed to revolve and rotate around the sun gear 45 under predetermined conditions with their pinion gear relative positions unchanged. Further, an outer periphery of the pinion gear 46 is rotatably disposed such that an inner periphery of the ring gear 47 meshes with the pinion gear 46. A plate 48 which is spline-fitted to the ring gear 47 so as to be relatively non-rotatable is provided on the outer periphery of the ring gear 47, and an electromagnetic clutch 49 is provided to face the plate 48. The electromagnetic clutch 49 has a coil 50 therein, and prevents the rotation of the ring gear 47 by attracting the plate 48 by electromagnetic force when the coil 50 is energized. The sun gear 4 of the rotating shaft 39
5, a one-way clutch 51 is provided between the rotor 42 side and the ring gear 47, and the one-way clutch 51 enables transmission of rotation from the ring gear 47 to the rotating shaft 39 while the ring gear 47 is allowed to rotate. The rotation transmission from the opposite rotation shaft 39 to the ring gear 47 is disabled. That is, the rotation speed of the rotating shaft 39 does not exceed the rotation speed of the ring gear 47 in a state where the rotation of the ring gear 47 is permitted.

The interior of the casing 36 is divided
The stator 41 and the rotor 42 are housed in one space, and the planetary gear unit 44, the one-way clutch 51, the electromagnetic clutch 49, and the plate 48 are housed in the other space. The coil 50 of the electromagnetic clutch 49 is fixed to the partition 52,
The energization signal to the controller 7 is transmitted from the controller 7. In FIG. 6, reference numeral 53 denotes a seal member.

The pinion gear 46 of the planetary gear unit 44
Carriers 55 are respectively inserted through needle bearings 54, and each carrier 55 is rotatable in a pinion gear 46. Each carrier 55 is connected to a hollow rotating member 56, and can revolve around the sun gear 45 integrally with the hollow rotating member 56, and their relative positions do not change. The hollow rotary member 56 extends in the axial direction (left direction in the figure) of the rotary shaft 39, forms a spline on the outer periphery thereof, and is fitted to the M / G side sprocket 13. M / G side sprocket 1
3 is connected to a crankshaft-side sprocket 12 of the engine 1 via a chain 18 so that the crankshaft 1
7 and the rotation shaft 39 of the M / G 3 can be transmitted.

The rotary shaft 39 penetrates through the hollow rotary member 56 and protrudes to the outside, and a pulley 10 for driving an auxiliary machine is integrally rotatable at its tip by spline fitting. The chain 18 is composed of a case 57 and a case 58
The lubricating oil is supplied into the accommodating space 59, and the lubricating oil is also supplied to the space accommodating the planetary gear unit 44. 6, reference numeral 60 denotes a radial bearing which rotatably supports the hollow rotary member 56, 61 denotes a seal member, and 62 denotes a bolt for integrally connecting the cases. FIG. 7 is a schematic cross-sectional view of the planetary gear device 44 as viewed from the axial direction of the rotating shaft 39, and the relative positional relationship among the sun gear 45, the pinion gear 46, the ring gear 47, and the carrier 55 is well understood.

Next, the operation of the fourth embodiment will be described. First, when the ON signal of the eco-run switch is input to enter the eco-run mode, when the vehicle stops, the fuel supply to the engine 1 is stopped and the engine stops. At this time, an ON signal is output from the controller to the electromagnetic clutch 27, and the electromagnetic clutch 27 is in the ON state. Even if the engine 1 is stopped, the power steering pump 11 and the air conditioner compressor 16, which are auxiliary equipment, are operated.
To supply the electric energy of the battery 5 to rotate the M / G 3. The rotation control of the M / G 3 is performed by the controller 7 and the inverter 4. At this time, the controller 7 outputs an OFF signal to the electromagnetic clutch 49 in the speed reducer 15, whereby the ring gear 47 of the planetary gear device 44 is allowed to rotate.

When the rotating shaft 39 of the M / G 3 rotates as shown in FIG. 6, the pulley 10 rotates together with the rotating shaft 39. Further, the rotation of the rotating shaft 39 is not transmitted to the ring gear 47 by the one-way clutch 51. When the ring gear 47 is allowed to rotate, the carrier 55 is stopped due to the sliding resistance of the engine 1. Therefore, even if the sun gear 45 rotates, the pinion gear 46 rotates only at that position, and the periphery of the sun gear 45 Do not revolve. (The ring gear 47 rotates with the rotation of the pinion gear 46.) As a result, only the auxiliary equipment is driven by the M / G 3, and the auxiliary equipment can be driven with less power than in the past because the engine 1 is not driven.

Next, when the engine 1 is restarted in the eco-run mode, the controller 7 outputs an ON signal to the electromagnetic clutch 49 of the speed reducer 15 to keep the ring gear 47 from rotating. When the rotation shaft 39 of the M / G 3 is rotated in this state, the rotation of the sun gear 45 is transmitted to the pinion gear 46 and the ring gear 47 is locked, so that the pinion gear 46 revolves around the sun gear 45 while rotating. Accordingly, the carrier 55 in the pinion gear 46 revolves around the sun gear 45, and the hollow rotary body 56 and the M / G3 side sprocket 13 rotate coaxially with the rotation shaft 39. At this time, the rotation speed of the M / G3 side sprocket 13 is such that the rotation speed of the rotation shaft 39 is reduced at a reduction ratio determined by the number of teeth of the sun gear 45 and the pinion gear 46. Therefore, torque sufficient for starting is transmitted from the M / G 3 to the engine 1, and the engine is restarted. This leads to the effect that the M / G3 can be reduced in size. In addition, since the rotating shaft 39 rotates, the auxiliary machine is simultaneously driven by the M / G3.

During power generation by the M / G 3, the rotation of the crankshaft 17 is transmitted to the M / G side sprocket, and the carrier 55 is rotated. At this time, the ring gear 47 is in a rotatable state, the ring gear 47 is rotated by the rotation of the carrier 55, and the rotation of the ring gear 47 is transmitted to the rotating shaft 39 by the one-way clutch 51. The carrier 55 and the ring gear 47 are integrated with the sun gear 4
5, the rotation of the crankshaft 17 is transmitted to the sprocket 13 and the rotating shaft 39 at a constant speed. At this time, since the rotating shaft 39 is rotated, the auxiliary machine is driven and the power generation operation by the M / G 3 is performed.

In the fourth embodiment, since the portions corresponding to the clutches 26 and 28 are provided inside the speed reducer 15 as compared with the third embodiment, the entire volume of the clutches 26 and 28 can be reduced. .

In the prior art and the first to fourth embodiments, if the air conditioner is driven by the M / G 3 when the engine 1 is stopped, the engine can be operated in an engine idle state while the vehicle is stopped (rotation in an area where fuel consumption is poor). 1, the air conditioner compressor does not need to be rotated. During eco-run, when the engine is stopped, the air conditioner compressor is rotated by the M / G3, and the electric energy taken out of the battery 5 is operated by the engine 1 to improve fuel efficiency. By collecting and collecting the M / G3 in the engine rotation region as a generator, the fuel efficiency of the vehicle can be further improved.

Further, the first to fourth embodiments have an advantage over the prior art that the engine 1 is not driven by the M / G 3 when the engine 1 is stopped, so that the power consumption of the battery 5 can be reduced accordingly.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram of a vehicle drive device according to a first embodiment of the present invention.

FIG. 2 is a system configuration diagram of a vehicle drive device according to a second embodiment of the present invention.

FIG. 3 is a system configuration diagram of a vehicle drive device according to a third embodiment of the present invention.

FIG. 4 is a system configuration diagram of a vehicle drive device according to a third embodiment of the present invention.

FIG. 5 is a system configuration diagram of a vehicle drive device according to a fourth embodiment of the present invention.

FIG. 6 is an explanatory diagram showing a detailed configuration of a motor / generator and a speed reducer according to a fourth embodiment of the present invention.

FIG. 7 is a schematic view showing a planetary gear device according to a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Engine 2 Automatic transmission (A / T) 3 Motor generator (M / G) 4 Inverter 5 Battery 7 Controller 8 Belt 9 Pulley 10 Pulley 11 Power steering pump 12 Crankshaft side sprocket 13 M / G side sprocket 14 Pulley 16 Air conditioner compressor 18 Chain 19 A / T oil pump 22 Pulley 23 Pulley 24 Oil inlet pipe 25 Oil outlet pipe 26 Electromagnetic clutch 27 Electromagnetic clutch 29 Pulley 30 Belt 31 Brake 32 Clutch 33 Sun gear 34 Carrier 35 Ring gear 36 Casing 39 Rotating shaft 41 Stator 42 Rotor 44 Planetary gear unit 45 Sun gear 46 Pinion gear 47 Ring gear 49 Electromagnetic clutch 51 One-way clutch 52 partition portion 55 carrier 56 hollow rotating body 57 cover 58 cover

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI F02D 29/02 F02D 29/02 D 321 321A (72) Inventor Kojiro Kuramochi 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation Inside

Claims (4)

[Claims] 1. A vehicle drive device comprising an engine and a motor connected to an engine drive shaft, wherein a speed change mechanism for transmitting the rotation of the motor rotation shaft to the engine drive shaft by shifting the rotation of the motor drive shaft and the motor is provided. And the auxiliary machine is mechanically connected to the motor rotation shaft,
A vehicle drive device wherein, when an auxiliary machine is driven by a motor while the engine is stopped, rotation of a motor rotation shaft is not transmitted to the engine drive shaft. 2. An engine, comprising: an auxiliary device connectable to the engine and an engine drive shaft; and a motor mechanically connected to the engine drive shaft, the motor being operable by electric energy of an electric energy source. Vehicle means, which is provided between the engine and the motor, means for connecting or disconnecting the engine drive shaft and the motor, and switching means for switching the connection or non-connection state. apparatus. 3. The vehicle drive device according to claim 2, further comprising a speed change mechanism that can change at least the rotation speed of the motor rotation shaft between the motor rotation shaft and the engine drive shaft. apparatus. 4. The motor generator according to claim 1, wherein the motor is a motor generator having a rotation function operated by electric energy of an electric energy source and a power generation function operated by mechanical energy of an engine. Vehicle drive.