Control apparatus and control method for vehicular drive apparatus

• US 20080132379A1
• Filed: 11/28/2007
• Published: 06/05/2008
• Est. Priority Date: 12/05/2006
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Iwase, Yuji, Tabata, Atsushi, Shibata, Hiroyuki, Matsubara, Tooru
• Granted Patent: US 7,998,021 B2
• Time in Patent Office: Days
• US Class Current: 477/3
• CPC Class Codes: B60K 1/02 comprising more than one electric motor
• CPC Class Codes: B60K 6/365 with the gears having orbital motion
• CPC Class Codes: B60K 6/40 characterised by the assembly or relative disposition of components
• CPC Class Codes: B60K 6/445 Differential gearing distribution type
• CPC Class Codes: B60L 1/003 to auxiliary motors, e.g. for pumps, compressors
• CPC Class Codes: B60L 15/20 for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2240/12 Speed
• CPC Class Codes: B60L 2240/14 Acceleration
• CPC Class Codes: B60L 2240/34 Cabin temperature
• CPC Class Codes: B60L 2240/36 Temperature of vehicle components or parts
• CPC Class Codes: B60L 2240/421 Speed
• CPC Class Codes: B60L 2240/423 Torque
• CPC Class Codes: B60L 2240/441 Speed
• CPC Class Codes: B60L 2240/443 Torque
• CPC Class Codes: B60L 2240/445 Temperature
• CPC Class Codes: B60L 2240/461 Speed
• CPC Class Codes: B60L 2240/485 Temperature
• CPC Class Codes: B60L 2240/486 Operating parameters
• CPC Class Codes: B60L 2250/10 by alarm
• 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 58/12 : responding to state of charge [SoC]
• CPC Class Codes: B60W 10/06 : including control of combustion engines
• 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 2710/0605 : Throttle position
• CPC Class Codes: B60W 2710/0616 : Position of fuel or air injector
• CPC Class Codes: B60W 2710/0644 : Engine speed
• CPC Class Codes: B60W 2710/0666 : Engine torque
• CPC Class Codes: B60W 30/20 : Reducing vibrations in the driveline
• CPC Class Codes: F02D 29/02 : peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
• CPC Class Codes: F02D 41/023 : in relation with the gear ratio shifting conjoint control for improving gear change B60W30/19
• CPC Class Codes: F02D 41/062 : for starting F02D41/061 takes precedence
• CPC Class Codes: F02N 11/0814 : comprising means for controlling automatic idle-start-stop
• CPC Class Codes: F02N 2300/102 : Control of the starter motor speed; Control of the engine speed during cranking
• CPC Class Codes: F16H 2037/0873 : with switching, e.g. to change ranges
• CPC Class Codes: F16H 3/728 : with means to change ratio in the mechanical gearing
• 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

Abstract

A control method for a vehicular drive apparatus that includes a driving power source that includes an engine and a motor, and a shift portion provided in a power transmission path from the driving power source to a drive wheel, includes staring the engine by executing an engine speed control that increases an engine speed to a predetermined engine speed or higher, and executing an engine torque generation control that generates engine torque by supplying fuel and igniting the fuel at the predetermined engine speed or higher. In the case where the controller determines that the period during which the shift of the shift portion is performed overlaps the period during which the engine is started, the engine is started by executing the engine speed control during the shift of the shift portion, and executing the engine torque generation control after the shift of the shift portion is completed.

Claims

1. A control apparatus for a vehicular drive apparatus that includes a driving power source that includes an engine and a motor, and a shift portion provided in a power transmission path from the driving power source to a drive wheel, the control apparatus comprising:

a controller that starts the engine by executing an engine speed control that increases an engine speed to a predetermined engine speed or higher, and executing an engine torque generation control that generates engine torque by supplying fuel and igniting the fuel at the predetermined engine speed or higher,

wherein in a case where the controller determines that a period during which a shift of the shift portion is performed overlaps a period during which the engine is started, the controller starts the engine by executing the engine speed control during the shift of the shift portion, and executing the engine torque generation control after the shift of the shift portion is completed.

2. The control apparatus according to claim 1, wherein in the case where the controller determines that the period during which the shift of the shift portion is performed overlaps the period during which the engine is started, the controller starts the engine by executing the engine torque generation control immediately after the shift of the shift portion is completed.

3. The control apparatus according to claim 1, wherein in the case where the controller determines that the period during which the shift of the shift portion is performed overlaps the period during which the engine is started, the controller starts the engine by executing the engine torque generation control when a predetermined time has elapsed after the shift of the shift portion is completed.

4. The control apparatus according to claim 1, wherein the shift of the shift portion is a power-on downshift.

5. The control apparatus according to claim 1, wherein the shift of the shift portion is performed when a vehicle is driven in a motor-driven mode using only the motor in the driving power source.

6. The control apparatus according to claim 1, wherein transmission of power is interrupted or reduced in the power transmission path during the shift of the shift portion.

7. The control apparatus according to claim 1, wherein the predetermined engine speed is a self-operating speed.

8. The control apparatus according to claim 1, wherein the predetermined engine speed is a substantial self-operating speed.

9. The control apparatus according to claim 1, wherein the shift portion is a stepped automatic transmission, and a clutch-to-clutch shift of the stepped automatic transmission is performed.

10. A control apparatus for a vehicular drive apparatus that includes a differential portion and a shift portion, wherein the differential portion includes a differential mechanism that includes a first element connected to an engine, a second element connected to a first motor, and a third element connected to a transmitting member and a second motor, the differential mechanism distributes output from the engine to the first motor and the transmitting member;

and the shift portion is provided in a power transmission path from the transmitting member to a drive wheel, the control apparatus comprising;

a controller that starts the engine by executing an engine speed control that increases an engine speed to a predetermined engine speed or higher by controlling at least one of the first motor and the second motor, and executing an engine torque generation control that generates engine torque by supplying fuel and igniting the fuel at the predetermined engine speed or higher,

wherein in a case where the controller determines that a period during which a shift of the shift portion is performed overlaps a period during which the engine is started, the controller starts the engine by executing the engine speed control during the shift of the shift portion, and executing the engine torque generation control after the shift of the shift portion is completed.

11. The control apparatus according to claim 10, wherein in the case where the controller determines that the period during which the shift of the shift portion is performed overlaps the period during which the engine is started, the controller starts the engine by executing the engine torque generation control immediately after the shift of the shift portion is completed.

12. The control apparatus according to claim 10, wherein in the case where the controller determines that the period during which the shift of the shift portion is performed overlaps the period during which the engine is started, the controller starts the engine by executing the engine torque generation control when a predetermined time has elapsed after the shift of the shift portion is completed.

13. The control apparatus according to claim 10, wherein the differential portion is operated as a continuously variable transmission by controlling an operating state of the first motor.

14. The control apparatus according to claim 10, wherein the shift of the shift portion is a power-n downshift.

15. The control apparatus according to claim 10, wherein the shift of the shift portion is performed when a vehicle is driven in a motor-driven mode using only the motor in the driving power source.

16. The control apparatus according to claim 10, wherein transmission of power is interrupted or reduced in the power transmission path during the shift of the shift portion.

17. The control apparatus according to claim 10, wherein the predetermined engine speed is a self-operating speed.

18. The control apparatus according to claim 10, wherein the predetermined engine speed is a substantial self-operating speed.

19. The control apparatus according to claim 10, wherein the shift portion is a stepped automatic transmission, and a clutch-to-clutch shift of the stepped automatic transmission is performed.

20. A control method for a vehicular drive apparatus that includes a driving power source that includes an engine and a motor, and a shift portion provided in a power transmission path from the driving power source to a drive wheel, the control method comprising:

starting the engine by executing an engine speed control that increases an engine speed to a predetermined engine speed or higher, and executing an engine torque generation control that generates engine torque by supplying fuel and igniting the fuel at the predetermined engine speed or higher,

wherein in a case where it is determined that a period during which a shift of the shift portion is performed overlaps a period during which the engine is started, the engine is started by executing the engine speed control during the shift of the shift portion, and executing the engine torque generation control after the shift of the shift portion is completed.

21. A control method for a vehicular drive apparatus that includes a differential portion and a shift portion, wherein the differential portion includes a differential mechanism that includes a first element connected to an engine, a second element connected to a first motor, and a third element connected to a transmitting member and a second motor, the differential mechanism distributes output from the engine to the first motor and the transmitting member, and the shift portion is provided in a power transmission path from the transmitting member to a drive wheel, the control method comprising:

starting the engine by executing an engine speed control that increases an engine speed to a predetermined engine speed or higher by controlling at least one of the first motor and the second motor, and executing an engine torque generation control that generates engine torque by supplying fuel and igniting the fuel at the predetermined engine speed or higher,

wherein in a case where it is determined that a period during which a shift of the shift portion is performed overlaps a period during which the engine is started, the engine is started by executing the engine speed control during the shift of the shift portion, and executing the engine torque generation control after the shift of the shift portion is completed.