Vehicular Control Device

• US 20080115985A1
• Filed: 11/22/2005
• Published: 05/22/2008
• Est. Priority Date: 11/24/2004
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Yoshida, Hiroshi, Ishikawa, Tetsuhiro
• Granted Patent: US 7,581,606 B2
• Time in Patent Office: Days
• US Class Current: 180/65.2
• CPC Class Codes: B60K 6/445 Differential gearing distribution type
• CPC Class Codes: B60K 6/448 Electrical distribution type
• CPC Class Codes: B60L 2210/10 DC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2240/12 Speed
• CPC Class Codes: B60L 2240/423 Torque
• CPC Class Codes: B60L 2240/486 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: B60L 50/61 by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
• CPC Class Codes: B60L 58/21 having the same nominal voltage
• CPC Class Codes: B60W 10/04 including control of propulsion units
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 10/26 for electrical energy, e.g. batteries or capacitors
• 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 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 2710/083 Torque
• CPC Class Codes: B60W 2710/105 Output torque
• CPC Class Codes: B60W 50/0098 Details of control systems ensuring comfort, safety or stability not otherwise provided for
• CPC Class Codes: F02D 29/02 peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
• CPC Class Codes: F02D 29/06 : peculiar to engines driving electric generators
• 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 903/91 : Orbital, e.g. planetary gears

Abstract

An ECU executes a program including the steps of: if an accelerator pedal position P is larger than a predetermined accelerator pedal position, calculating an output that an MG(2) is required to provide; calculating an output that a capacitor and a battery can supply; calculating an output that can be supplied to MG(1), by subtracting the output that the MG(2) is required to provide from the output that the capacitor and the battery can supply; calculating a torque that each MG is instructed to output, as based on the output that can be supplied to MG(1) and the output that an MG(2) is required to provide; and controlling inverters (1) and (2), as based on the torque that each MG is instructed to output, to accelerate the vehicle.

Claims

1. A control device for a vehicle, comprising:

an engine;

a first rotating electric machine coupled to said engine;

a second rotating electric machine coupled to said engine;

a battery;

a capacitor provided electrically in parallel with said battery; and

a control unit causing said battery Hand said capacitor to supply power to increase a number of rotations of said second rotating electric machine and also controlling said first rotating electric machine and said second rotating electric machine to prevent said first rotating electric machine from acting as a load of said engine when said vehicle is accelerated as a driving force of said engine is transmitted to a driving wheel.

2. The control device for a vehicle, according to claim 1, further comprising:

a first calculation unit for calculating an output that said second rotating electric machine is required to provide;

a second calculation unit for calculating an output provided from said battery and said capacitors; and

a third calculation unit for calculating an output of said first rotating electric machine by subtracting said output that said second rotating electric machine is required to provide from said output provided from said battery and said capacitor, wherein

said control unit controls said first rotating electric machine, as based on said output of said first rotating electric machine, to increase a number of rotations of said engine.

3. The control device for a vehicle, according to claim 1, wherein when said engine attains a predetermined number of rotations said control unit controls said first rotating electric machine to decrease a torque generated from said first rotating electric machine.

4. The control device for a vehicle, according to claim 1, further comprising a power split device including a sun gear, a pinion gear engaging with said sun gear, a carrier supporting said pinion gear rotatably as desired, and a ring gear engaging with said pinion gear, wherein:

said engine is coupled to said carrier;

said first rotating electric machine is coupled to said sun gear; and

said second rotating electric machine is coupled to said ring gear.

5. The control device for a vehicle, according to claim 1, wherein said rotating electric machine is a motor generator.

6. A control device for a vehicle, comprising:

an engine;

a first rotating electric machine coupled to said engine;

a second rotating electric machine coupled to said engine;

a battery;

a capacitor provided electrically in parallel with said battery; and

control means for causing said battery and said capacitor to supply power to increase a number of rotations of said second rotating electric machine and also controlling said first rotating electric machine sand said second rotating electric machine to prevent said first rotating electric machine from acting as a load of said engine when said vehicle is accelerated as a driving force of said engine is transmitted to a driving wheel.

7. The control device for a vehicle, according to claim 6, further comprising:

means for calculating an output that said second rotating electric machine is required to provide;

means for calculating an output provided from said battery and said capacitor; and

means for calculating an output of said first rotating electric machine by subtracting said output that said second rotating electric machine is required to provide from said output provided from said battery and said capacitor, wherein

said control means includes means for controlling said first rotating electric machine, as based on said output of said first rotating electric machine, to increase a number of rotations of said engine.

8. The control device for a vehicle, according to claim 6, wherein said control means further includes means responsive to said engine having attained a predetermined number of rotations, for controlling said first rotating electric machine to decrease a torque generated from said first rotating electric machine.

9. The control device for a vehicle, according to claim 6, further comprising a power split device including a sun gear, a pinion gear engaging with said sun gear, a carrier supporting said pinion gear rotatably as desired, and a ring gear engaging with said pinion gear, wherein:

said engine is coupled to said carrier;

said first rotating electric machine is coupled to said sun gear; and

said second rotating electric machine is coupled to said ring gear.

10. The control device for a vehicle, according to claim 6, wherein said rotating electric machine is a motor generator.