Method for operating at least one drive motor of a motor vehicle

• US 7,762,230 B2
• Filed: 01/24/2008
• Issued: 07/27/2010
• Est. Priority Date: 01/24/2007
• Status: Expired due to Fees

• Current Assignee: Audi AG (Volkswagen AG)
• Original Assignee: Audi AG (Volkswagen AG)
• Inventors: Graf, Johann
• Primary Examiner(s): SOLIS, ERICK R
• Application Number:
  US12/010,370
• Publication Number:
  US 20080184959A1
• Time in Patent Office: 915 Days
• Field of Search: 123/339.14, 123/339.15, 123/351
• US Class Current: 123/339.15
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 2710/0644 Engine speed
• CPC Class Codes: B60W 30/18054 at stand still, e.g. engine in idling state hill holding B60W30/18118
• CPC Class Codes: F02D 11/105 characterised by the function converting demand to actuation, e.g. a map indicating relations between an accelerator pedal position and throttle valve opening or target engine torque
• CPC Class Codes: F02D 2200/101 Engine speed
• CPC Class Codes: F02D 2200/1012 Engine speed gradient
• CPC Class Codes: F02D 2200/501 Vehicle speed
• CPC Class Codes: F02D 2200/602 Pedal position
• CPC Class Codes: F02D 31/009 for maximum speed control
• CPC Class Codes: F02D 41/0097 using means for generating speed signals

Abstract

The invention relates to a method for operating at least one drive motor, particularly an internal combustion engine, of an automobile, particularly a motor vehicle, wherein the engine speed of the drive motor in the detected idle state of the motor vehicle does not exceed a predetermined maximum value by means of engine speed limitation. It is provided that the idle state detected is verified at least once by means of a test cycle.

Claims

1. A method for operating at least one drive motor, particularly an internal combustion engine, of an automobile, particularly a motor vehicle, wherein the engine speed of the drive motor in the detected idle state of the motor vehicle does not exceed a predetermined maximum value by means of engine speed limitation, wherein the detected idle state is verified at least once by means of a test cycle.

2. The method according to claim 1 wherein, the idle state is detected by means of a speed signal.

3. The method according to claim 2 wherein the speed signal is supplied by a braking device of the motor vehicle.

4. The method according to claim 2 wherein the speed signal is supplied by a drive assisting device of the motor vehicle.

5. The method according to claim 1 wherein the verification is performed by means of a test step, in which it is determined, whether an idle state is not present.

6. The method according to claim 1 wherein it is detected in the test step, whether an increased engine speed, which is higher than the idle engine speed, and a positive-fit position of a drive clutch of the vehicle are present.

7. The method according to claim 6 wherein the positive-fit position is detected in dependency of a load signal and an engine speed gradient, particularly an engine speed rev-up gradient.

8. The method according to claim 7 wherein the positive-fit position is detected in dependency of the position of a gas pedal of the motor vehicle, and an engine speed gradient, particularly an engine speed rev-up gradient.

9. The method according to claim 2 wherein the maximum value is smaller than a maximum engine speed value.