Method for operating a motor vehicle and corresponding motor vehicle

• US 10,112,604 B2
• Filed: 10/31/2015
• Issued: 10/30/2018
• Est. Priority Date: 11/06/2014
• Status: Active Grant

• Current Assignee: Audi AG (Volkswagen AG)
• Original Assignee: Audi AG (Volkswagen AG)
• Inventors: Blasinski, Boris
• Primary Examiner(s): Beaulieu, Yonel
• Application Number:
  US15/524,902
• Publication Number:
  US 20170334435A1
• Time in Patent Office: 1,095 Days
• 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 20/12 using control strategies taking into account route information estimation or calculation of non-directly measurable driving parameters B60W40/00
• CPC Class Codes: B60W 20/16 for reducing engine exhaust emissions
• CPC Class Codes: B60W 20/40 Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers power-up or power-down of the driveline B60W30/192
• CPC Class Codes: B60W 2530/00 Input parameters relating to vehicle conditions or values, not covered by groups B60W2510/00 or B60W2520/00
• CPC Class Codes: B60W 2556/50 of positioning data, e.g. GPS [Global Positioning System] data
• CPC Class Codes: B60W 2710/06 Combustion engines, Gas turbines
• CPC Class Codes: B60W 2710/244 Charge state
• CPC Class Codes: B60W 50/0097 Predicting future conditions
• CPC Class Codes: B60Y 2300/476 Regeneration of particle filters
• CPC Class Codes: F01N 3/023 using means for regenerating the filters, e.g. by burning trapped particles by electrically controlling the supply of combustible mixture or its constituents only F02D41/0235
• CPC Class Codes: F01N 9/002 of filter regeneration, e.g. detection of clogging
• CPC Class Codes: Y10S 903/905 Combustion engine
• CPC Class Codes: Y10S 903/906 Motor or generator

Abstract

A method for operating a motor vehicle is disclosed. The motor vehicle is provided with a hybrid drive device having an electric machine, an internal combustion engine and a particle filter associated with the internal combustion engine, wherein the internal combustion engine is operated temporarily for regenerating the particle filter. In a first operating mode, the regeneration is only started when it is determined by a navigation device that an electric driving region to be driven through lies ahead, in which region an operation of the internal combustion engine and/or the regeneration of the particle filter is not desired.

Claims

1. A method for operating a motor vehicle, said motor vehicle comprising a hybrid drive device having an electric machine, an internal combustion engine and a particle filter assigned to the electric machine, said method comprising:

temporarily operating the combustion engine for regenerating the particle filter, wherein in a first operating mode the regenerating is only initiated when a navigation device determines that an electric driving region to be driven through by the motor vehicle lies ahead in which electric driving region an operation of the internal combustion engine and/or a regeneration of the particle filter is not desired.

2. The method of claim 1, wherein in the first operating mode the regenerating is only initiated when a filling level of the particle filter is greater than a first threshold value, wherein the first threshold value is a minimal filling level which corresponds to an empty particle filter.

3. The method of claim 2, wherein in the first operating mode the regenerating is only initiated when the filling level is greater than a second threshold value which is greater than the first threshold value.

4. The method of claim 1, wherein the regenerating is only performed in a regeneration driving region when the navigation device determines that the motor vehicle drives through the regeneration driving region.

5. The method of claim 4, wherein the regenerating is only performed in the regeneration driving region when the navigation device determines that the motor vehicle drives through the regeneration driving region before driving through the electric driving region.

6. The method of claim 1, wherein the regenerating is initiated when the internal combustion engine is operated so that the internal combustion engine provides a drive torque which is greater than a predefined drive torque requested for driving the motor vehicle.

7. The method of claim 6, further comprising charging an energy storage of the motor vehicle by driving the electric machine with the internal combustion engine, and applying a torque corresponding to a difference between the drive torque and the predefined torque to the electric machine.

8. The method of claim 7, wherein the energy storage is charged when the navigation device detects the electric driving region ahead.

9. The method of claim 1, further comprising changing into a second operating mode in which the regenerating is initiated immediately when the filling level of the particle filter exceeds a third threshold value.

10. The method of claim 1, further comprising changing into the first operating mode when the filling level of the particle filter falls below a defined filling level.

11. A motor vehicle, comprising:

a hybrid drive device, said hybrid drive device comprising an electric machine, an internal combustion engine and a particle filter assigned to the internal combustion engine, said internal combustion engine being temporarily operable for regenerating the particle filter, said motor vehicle being configured to initiate a regeneration of the particle filter in a first operating mode only when a navigation device determines that an electric driving region to be driven through by the motor vehicle lies ahead in which electric driving region an operation of the internal combustion engine and/or the regeneration of the particle filter is not desired.