Hybrid vehicle

• US 20010011050A1
• Filed: 01/23/2001
• Published: 08/02/2001
• Est. Priority Date: 01/24/2000
• Status: Active Grant

• Current Assignee: HINO Jidosha Kogyo Kabushiki Kaisha
• Original Assignee: HINO Jidosha Kogyo Kabushiki Kaisha
• Inventors: Obata, Atsuomi, Masuda, Atsushi, Yamaguchi, Koichi
• Granted Patent: US 6,488,608 B2
• Time in Patent Office: Days
• US Class Current: 477/3
• CPC Class Codes: B60K 6/26 characterised by the motors or the generators
• CPC Class Codes: B60K 6/383 One-way clutches or freewheel devices
• CPC Class Codes: B60K 6/442 Series-parallel switching type
• CPC Class Codes: B60K 6/48 Parallel type
• CPC Class Codes: B60L 15/2009 for braking
• 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 2250/26 by pedal actuation
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: F16D 41/07 between two cylindrical surfaces
• CPC Class Codes: H02K 7/006 Structural association of a motor or generator with the drive train of a motor vehicle
• CPC Class Codes: H02K 7/108 with friction clutches
• CPC Class Codes: H02K 7/14 Structural association with mechanical loads, e.g. with hand-held machine tools or fans with fan or impeller for cooling the machine H02K9/06
• 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 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility
• CPC Class Codes: Y10S 903/906 : Motor or generator
• CPC Class Codes: Y10S 903/913 : One way

Abstract

A hybrid car, which can utilize the merits of both the series system hybrid car and the parallel system hybrid car and has high fuel consumption efficiency, is provided. Only one electric rotary machine is mounted in order to reduce the total weight of the car. By eliminating energy to be lost by friction of an internal combustion engine during regenerative braking, energy efficiency regenerated by the regenerative braking is improved. The internal combustion engine, a motor-generator, a clutch and a change gear are connected in the sequence and a unidirectional rotation transmitting means is provided between the internal combustion engine and the motor-generator.

Claims

1. A hybrid car including an internal combustion engine, a motor-generator, a clutch and a change gear, all of which are connected in the sequence to transmit a rotary driving force in the sequence, said hybrid car comprising

unidirectional rotation transmitting means provided between said internal combustion engine and said motor-generator, said unidirectional rotation transmitting means being adapted to transmit a rotary driving force generated by said internal combustion engine to said motor-generator and to block a transmission of a rotary driving force generated by said motor-generator to said internal combustion engine.

2. A hybrid car as claimed in

claim 1

, further comprising:

control means for controlling said motor-generator; and

electric storage means connected to said motor-generator through said control means, wherein said control means comprises;

means for setting any one of the following modes;

(1) a motor running mode in which said motor-generator is operated as a motor to drive an axle through said change gear;

(2) a parallel running mode in which said motor-generator is operated as said motor and said axle is driven by both said motor and said internal combustion engine through said change gear;

(3) an engine running mode in which said motor-generator races and said axle is driven by said internal combustion engine through said change gear;

(4) a running/recharging mode in which said motor-generator is operated as a generator and said axle is driven by said internal combustion engine through said motor-generator and said change gear and, simultaneously, said electric storage means is recharged by electric energy generated by said generator;

(5) a regenerative mode in which said motor-generator is operated as said generator and said generator is driven by said change gear to recharge said electric storage means by electric energy generated by said generator; and

(6) a parking/recharging mode in which said motor-generator is operated as said generator and said generator is driven by said internal combustion engine to recharge said electric storage means by electric energy generated by said generator.

3. A hybrid car as claimed in

claim 2

, wherein said motor-generator is a synchronous rotary machine having a permanent magnet and said control means comprises:

a bidirectional inverter for converting a multi-phase A.C. output of said synchronous rotary machine into a D.C. current and supplying the D.C. current to said electric storage means and for converting an output D.C. current of said electric storage means into a multi-phase A.C. output and supplying the multi-phase A.C. output to said synchronous rotary machine;

a first rotation sensor for detecting rotation of said motor-generator;

a second rotation sensor for detecting rotation of said internal combustion engine; and

a program control circuit responsive to outputs of said first and second rotation sensors for monitoring an operation of said unidirectional rotation transmitting means and controlling the A.C. frequency of said bidirectional inverter.

4. A hybrid car as claimed in

claim 1

, wherein said unidirectional rotation transmitting means is a unidirectional clutch.

5. A hybrid car as claimed in

claim 1

, wherein said unidirectional clutch is disposed in a space defined in a rotor of said motor-generator and a stator of said motor-generator is disposed in an outer peripheral space of said rotor.

6. A hybrid car as claimed in

claim 5

, further comprising a stator housing for housing said unidirectional clutch and said motor-generator, wherein said stator of said motor-generator is fixedly secured to an inside of said stator housing.

7. A hybrid car as claimed in

claim 6

, further comprising a flywheel housed in said stator housing and fixedly secured to said rotor of said motor-generator, a slit ring formed with a plurality of slits and fixedly secured to said flywheel and a rotation sensor provided inside said stator housing, for transmitting and receiving light passed through said slits of said slit ring.

8. A hybrid car as claimed in

claim 7

, wherein said stator housing includes a first piece on which said stator of said motor-generator is mounted and a second piece on which said rotation sensor is mounted.