Electric generating system for automobiles and its control method

• US 20010019210A1
• Filed: 02/27/2001
• Published: 09/06/2001
• Est. Priority Date: 03/01/2000
• Status: Active Grant

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Maeda, Yuuji, Innami, Toshiyuki, Yamamoto, Tatsuyuki, Tajima, Susumu, Shimizu, Hisaya, Mashino, Keiichi, Fukasaku, Yoshinori, Nishidate, Keisuke
• Granted Patent: US 6,965,173 B2
• Time in Patent Office: Days
• US Class Current: 290/40C
• CPC Class Codes: B60K 17/16 of differential gearing
• CPC Class Codes: B60K 17/356 having fluid or electric motor, for driving one or more wheels disposition of motor in, or adjacent to, traction wheel B60K7/00
• CPC Class Codes: B60K 6/26 characterised by the motors or the generators
• CPC Class Codes: B60K 6/40 characterised by the assembly or relative disposition of components
• CPC Class Codes: B60K 6/44 Series-parallel type
• CPC Class Codes: B60K 6/46 Series type
• CPC Class Codes: B60K 6/52 Driving a plurality of drive axles, e.g. four-wheel drive
• CPC Class Codes: B60K 6/547 the transmission being a stepped gearing
• CPC Class Codes: B60L 15/2054 by controlling transmissions or clutches
• CPC Class Codes: B60L 2240/423 Torque
• CPC Class Codes: B60L 2240/486 Operating parameters
• CPC Class Codes: B60L 2240/507 Operating parameters
• CPC Class Codes: B60L 50/52 characterised by DC-motors
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 20/10 Controlling the power contribution of each of the prime movers to meet required power demand
• CPC Class Codes: B60W 2710/105 Output torque
• CPC Class Codes: H02K 23/06 having shunt connection of excitation windings
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/64 : Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/72 : Electric energy management in electromobility
• CPC Class Codes: Y10S 903/903 : having energy storing means, e.g. battery, capacitor
• CPC Class Codes: Y10S 903/906 : Motor or generator
• CPC Class Codes: Y10S 903/916 : with plurality of drive axles
• CPC Class Codes: Y10S 903/919 : Stepped shift
• CPC Class Codes: Y10S 903/951 : Assembly or relative location of components

Abstract

The present invention provides a vehicle driving apparatus capable of being mounted easily even in a narrow space such as under-floor of the vehicle. The vehicle driving apparatus comprises a first and a second generators driven by an engine for driving front wheels, and a motor driven by receiving a power supply from the second generator to drive rear wheels, the first and second generators being installed in the vicinity of an engine within an engine room, the motor being arranged in the vicinity of a differential gear with which a reduction mechanism is integrated and is positioned substantially in a central part of the rear wheels.

Claims

1. A vehicle driving apparatus comprising:

a first generator driven by an internal combustion engine for driving one of front and rear wheels of a vehicle to supply power to storage means;

a motor for driving the other of said front and rear wheels; and

a second generator driven by said internal combustion engine to supply power to said motor;

wherein said first and second generators are installed in the vicinity of said internal combustion engine in a room in which said internal combustion engine is housed, and said motor is arranged in the vicinity of a gear mechanism provided on an axle of the other of said front and rear wheels, said gear mechanism being integrated with a reduction mechanism.

3. The vehicle driving apparatus according to

claim 1

or

2

, wherein said first generator is arranged at a position above said second generator.

4. The vehicle driving apparatus according to

claim 1

or

2

, wherein said second generator is of a closed type that circulates a cooling medium within the generator to cool the generator, and is arranged at a position below said first generator.

5. The vehicle driving apparatus according to

claim 1

or

2

, wherein said second generator and said motor are connected by a two-wire type wiring path.

6. The vehicle driving apparatus according to

claim 1

or

2

, comprising control means for controlling said second generator and said motor, said control means being provided in a wiring path between said storage means or said battery and said second generator, and being mounted in a vacant part within a room in which said internal combustion engine is housed or said engine room.

7. The vehicle driving apparatus according to

claim 1

or

2

, comprising control means for controlling said second generator and said motor, said control means being provided within a ABS control unit or an engine control unit.

2. A vehicle driving apparatus comprising:

a first generator driven by an engine for driving one of front and rear wheels of a vehicle to supply power to a battery;

a motor for driving the other of said front and rear wheels; and

a second generator driven by said engine to supply power to said motor;

wherein said first and second generators are installed in the vicinity of said engine in an engine room, and said motor is arranged in the vicinity of a differential gear positioned substantially in a central part of the other of said front and rear wheels, said differential gear being integrated with a reduction mechanism.

8. A vehicle driving apparatus comprising:

a generator driven by a prime mover for driving a first axle of a vehicle and provided with a field winging and an armature winding for generating electromotive force by magnetic flux generated from said field winding;

a motor for driving a second axle of the vehicle;

a control device for controlling said generator and said motor;

wherein said motor is an induction motor having an armature winding of the same number of phases as that of the armature winding of said generator, the armature winding of said generator and the armature winding of said induction motor are connected by a connecting wire, and said control device controls a current flowing into said field winding to make voltage applied to said induction motor variable, thereby controlling torque generated in said induction motor.

9. The vehicle driving apparatus according to

claim 8

, comprising a polarity switching device for switching the direction of a current flowing into said filed winding to rotate said induction motor in any of forward and reverse directions.

10. The vehicle driving apparatus according to claim 8, comprising a rectifier for converting AC output of the armature winding of said generator to DC, wherein DC output of said rectifier serves as a power supply of said field winding.