Hybrid type vehicle driving controller, hybrid type vehicle driving control method and its program

• US 7,340,330 B2
• Filed: 06/01/2004
• Issued: 03/04/2008
• Est. Priority Date: 06/05/2003
• Status: Active Grant

• Current Assignee: Aisin AW Company Limited (Aisin Corp.)
• Original Assignee: Aisin AW Company Limited (Aisin Corp.)
• Inventors: Okoshi, Toshio, Okada, Rie, Hisada, Hideki, Aoki, Kazuo
• Primary Examiner(s): NGUYEN, CUONG H
• Application Number:
  US10/856,839
• Publication Number:
  US 20040249525A1
• Time in Patent Office: 1,372 Days
• Field of Search: 701/22, 701/84, 903/923, 903941-942, 477/3
• US Class Current: 701/22
• CPC Class Codes: B60K 6/445 Differential gearing distribution type
• CPC Class Codes: B60L 2240/421 Speed
• CPC Class Codes: B60L 2240/425 Temperature
• 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 20/11 using model predictive control [MPC] strategies, i.e. control methods based on models predicting performance utilising navigation and traffic information in the control strategy B60W20/12
• CPC Class Codes: B60W 2510/081 Speed
• CPC Class Codes: B60W 2510/087 Temperature
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y10S 903/905 Combustion engine

Abstract

The invention has an engine maximum torque calculating processor for calculating plural engine maximum torques showing a maximum value of engine torque, and an engine limit torque calculating processor for calculating a minimum value of the respective engine maximum torques as engine limit torque. Because the minimum value of the engine maximum torques is calculated as the engine limit torque, it is possible to reliably prevent the engine from entering an excessive rotating state. Further, because the engine limit torque is calculated on the basis of the minimum value of the engine maximum torques, the engine limit torque can be reliably calculated even when there is an individual difference in the engine, an electric generator, etc. and there are calculation errors further, for example, electric generator target torque and the electric generator maximum torque.

Claims

1. A hybrid type vehicle driving controller comprising electric generator maximum torque calculation processing means for calculating electric generator maximum torque showing a maximum value of electric generator torque;

electric generator target torque calculation processing means for calculating electric generator target torque showing a target value of the electric generator torque;

deficient electric generator torque calculation processing means for calculating a deficient amount of the electric generator torque on the basis of the difference between said electric generator target torque and the electric generator maximum torque;

engine maximum torque calculation processing means for calculating plural engine maximum torques on the basis of at least said electric generator maximum torque and the deficient amount of the electric generator torque; and

engine limit torque calculation processing means for calculating a minimum value of said respective engine maximum torques as engine limit torque.

2. The hybrid type vehicle driving controller according to claim 1, wherein said electric generator maximum torque calculation processing means calculates the electric generator maximum torque on the basis of an electric generator rotating speed, a direct current voltage and the temperature of an inverter.

3. The hybrid type vehicle driving controller according to claim 1, wherein said electric generator target torque calculation processing means calculates the electric generator target torque on the basis of an electric generator rotating speed and an electric generator target rotating speed showing a target value of the electric generator rotating speed.

4. The hybrid type vehicle driving controller according to claim 1, wherein the hybrid type vehicle driving controller further comprises engine torque adjustment processing means for adjusting request engine torque required in the engine on the basis of the deficient amount of said electric generator torque.

5. The hybrid type vehicle driving controller according to claim 1, wherein said engine maximum torque calculation processing means has first engine maximum torque calculation processing means for calculating the engine maximum torque on the basis of at least said electric generator maximum torque, and also has second engine maximum torque calculation processing means for calculating the engine maximum torque on the basis of the deficient amount of said electric generator torque.

6. The hybrid type vehicle driving controller according to claim 5, wherein the hybrid type vehicle driving controller further comprises engine torque adjustment processing means for adjusting request engine torque required in the engine on the basis of the deficient amount of said electric generator torque.

7. The hybrid type vehicle driving controller according to claim 6, wherein said electric generator maximum torque calculation processing means calculates the electric generator maximum torque on the basis of an electric generator rotating speed, a direct current voltage and the temperature of an inverter.

8. The hybrid type vehicle driving controller according to claim 6, wherein said electric generator target torque calculation processing means calculates the electric generator target torque on the basis of an electric generator rotating speed and an electric generator target rotating speed showing a target value of the electric generator rotating speed.

9. The hybrid type vehicle driving controller according to claim 6, wherein said request engine torque is set to a fixed value.

10. The hybrid type vehicle driving controller according to claim 6, wherein said request engine torque is set to engine target torque when the electric generator target torque is greater than the electric generator maximum torque.

11. The hybrid type vehicle driving controller according to claim 5, wherein said electric generator maximum torque calculation processing means calculates the electric generator maximum torque on the basis of an electric generator rotating speed, a direct current voltage and the temperature of an inverter.

12. The hybrid type vehicle driving controller according to claim 5, wherein said electric generator target torque calculation processing means calculates the electric generator target torque on the basis of an electric generator rotating speed and an electric generator target rotating speed showing a target value of the electric generator rotating speed.

13. The hybrid type vehicle driving controller according to claim 4, wherein said request engine torque is set to engine target torque when the electric generator target torque is greater than the electric generator maximum torque.

14. The hybrid type vehicle driving controller according to claim 4, wherein said electric generator maximum torque calculation processing means calculates the electric generator maximum torque on the basis of an electric generator rotating speed, a direct current voltage and the temperature of an inverter.

15. The hybrid type vehicle driving controller according to claim 4, wherein said electric generator target torque calculation processing means calculates the electric generator target torque on the basis of an electric generator rotating speed and an electric generator target rotating speed showing a target value of the electric generator rotating speed.

16. The hybrid type vehicle driving controller according to claim 4, wherein said request engine torque is set to a fixed value.