Method and Device for Controlling a Hybrid Vehicle

• US 20080029319A1
• Filed: 07/30/2007
• Published: 02/07/2008
• Est. Priority Date: 07/28/2006
• Status: Active Grant

• Current Assignee: Dr Ing hc F Porsche AG (Volkswagen AG)
• Original Assignee: Dr Ing hc F Porsche AG (Volkswagen AG)
• Inventors: Sauvlet, Nils, Fleckner, Marco, Kraxner, Dieter, Gohring, Markus
• Granted Patent: US 8,240,413 B2
• Time in Patent Office: Days
• US Class Current: 180/65.2
• CPC Class Codes: B60K 6/48 Parallel type
• 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 20/20 Control strategies involving selection of hybrid configuration, e.g. selection between series or parallel configuration
• CPC Class Codes: B60W 2540/215 Selection or confirmation of options
• CPC Class Codes: B60W 30/18127 Regenerative braking
• CPC Class Codes: B60W 30/182 Selecting between different operative modes, e.g. comfort and performance modes
• CPC Class Codes: B60W 50/082 Selecting or switching between different modes of propelling
• CPC Class Codes: B60W 50/085 Changing the parameters of the control units, e.g. changing limit values, working points by control input
• CPC Class Codes: Y02T 10/62 Hybrid vehicles

Abstract

A method and a device control a hybrid vehicle drive. The device contains a multiplicity of control parameter sets having different recovery torques for a conversion control device which sets a recovery torque of the electric motor in an overrun phase, which recovery torques are assigned a respective driving mode indicator. A definition device is provided for defining a current driving mode indicator, as a result of which a control parameter set corresponding to the defined current driving mode indicator can be used to control the conversion control device in an overrun phase of the hybrid vehicle drive.

Claims

1. A method for controlling a hybrid vehicle drive with an internal combustion engine and an electric motor, which comprises the steps of:

specifying a multiplicity of control parameter sets with different recovery torques for a conversion control device for setting a recovery torque of the electric motor in an overrun phase;

assigning a respective driving mode indicator to the multiplicity of control parameter sets;

defining a current driving mode indicator; and

using a respective control parameter set, corresponding to the current driving mode indicator, to control the conversion control device in the overrun phase of the hybrid vehicle drive.

2. The method according to claim 1, which further comprises defining the current driving mode indicator manually.

3. The method according to claim 1, which further comprises defining the current driving mode indicator automatically.

4. The method according to claim 1, which further comprises:

assigning a first driving mode indicator to a first control parameter set in a sport mode with a first recovery torque; and

assigning a second driving mode indicator to a second control parameter set in a normal mode with a second recovery torque, and the first recovery torque is greater than the second recovery torque.

5. A device for controlling a hybrid vehicle drive with an internal combustion engine and an electric motor, the device comprising:

a memory storing a multiplicity of control parameter sets with different recovery torques for a conversion control device for setting a recovery torque of the electric motor in an overrun phase, the recovery torques being assigned to a respective driving mode indicator; and

a definition device for defining a current driving mode indicator, by which a control parameter set corresponding to the current driving mode indicator is used to control the conversion control device in an overrun phase of the hybrid vehicle drive.

6. The device according to claim 5, wherein said definition device has a switching device being operated manually.

7. The device according to claim 5, wherein said definition device has a controllable switching device and an automatic driving mode definition device for generating a control signal for said controllable switching device on a basis of at least one driving mode parameter.

8. The device according to claim 6, wherein a first driving mode indicator is assigned to a first control parameter set in a sport mode with a first recovery torque, and a second driving mode indicator is assigned to a second control parameter set in a normal mode with a second recovery torque, and the first recovery torque is greater than the second recovery torque.