METHOD AND DEVICE FOR PREVENTING UNINTENTIONAL ACCELERATION OF A MOTOR VEHICLE

• US 20150025765A1
• Filed: 07/21/2014
• Published: 01/22/2015
• Est. Priority Date: 07/22/2013
• Status: Active Grant

• Current Assignee: BMW AG (Bayerische Motoren Werke AG), Robert Bosch GmbH
• Original Assignee: BMW AG (Bayerische Motoren Werke AG), Robert Bosch GmbH
• Inventors: OESTERREICHER, Florian, OPPELLAND, Magnus, SCHUELER, Matthias, BINDER, Juergen, KOVAC, Dalibor
• Granted Patent: US 9,460,628 B2
• Time in Patent Office: Days
• US Class Current: 701/70
• CPC Class Codes: B60K 28/10 responsive to conditions relating to the vehicle
• CPC Class Codes: B60W 2510/0604 Throttle position
• CPC Class Codes: B60W 2510/0652 Speed change rate
• CPC Class Codes: B60W 2510/0657 Engine torque
• CPC Class Codes: B60W 2520/04 Vehicle stop
• CPC Class Codes: B60W 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 2540/12 Brake pedal position
• CPC Class Codes: B60W 30/18054 at stand still, e.g. engine in idling state hill holding B60W30/18118
• CPC Class Codes: B60W 50/045 Monitoring control system parameters
• CPC Class Codes: G08G 1/052 with provision for determining speed or overspeed speed measuring in general G01P
• CPC Class Codes: G08G 1/166 for active traffic, e.g. moving vehicles, pedestrians, bikes

Abstract

A method for monitoring a motor vehicle includes: monitoring whether a speed of the motor vehicle indicates a stopping condition of the motor vehicle; detecting whether at least one vehicle operating condition indicating an imminent unintentional acceleration of the vehicle exists; and triggering a fault response if (i) the vehicle is in the stopping condition and (ii) the at least one vehicle operating condition indicating an imminent unintentional acceleration of the vehicle exists.

Claims

1. A method for monitoring a motor vehicle, comprising:

monitoring whether a speed of the motor vehicle indicates a stopping condition of the motor vehicle;

detecting whether at least one vehicle operating condition indicating an imminent unintentional acceleration of the vehicle exists; and

triggering a fault response if (i) the vehicle is in the stopping condition and (ii) the at least one vehicle operating condition indicating an imminent unintentional acceleration of the vehicle exists.

2. The method as recited in claim 1, wherein the at least one vehicle operating condition indicating an imminent unintentional acceleration of the vehicle is detected by one of torque monitoring or acceleration monitoring.

3. The method as recited in claim 1, wherein the stopping condition is indicated when at least the speed of the vehicle is below a predefined speed threshold value.

4. The method as recited in claim 3, wherein the stopping condition is indicated when a torque demand which is lower than a predefined torque demand threshold value additionally exists.

5. The method as recited in claim 3, wherein the stopping condition is indicated when a braking demand additionally exists.

6. The method as recited in claim 2, wherein the fault response is triggered when (i) a rotational speed of an engine of the motor vehicle is higher than a predefined rotational speed threshold value, (ii) the drive train is not disengaged, and the (iii) a gradient of the rotational speed of the engine is greater than a predefined gradient threshold value.

7. The method as recited in claim 2, wherein the fault response is triggered when (i) the product of a rotational speed of an engine of the motor vehicle and a transmission ratio of a transmission in a drive train of the motor vehicle is greater than a predefined drive wheel speed threshold value, and (ii) a time derivative of the product of the rotational speed of the engine and the transmission ratio exceeds a predefined gradient threshold value.

8. The method as recited in claim 2, wherein the fault response is triggered when (i) a gradient of the speed of a drive wheel of the motor vehicle exceeds a predefined drive wheel speed gradient threshold value, and (ii) a transmission ratio of a transmission in a drive train of the motor vehicle is not equal to zero.

9. The method as recited in claim 2, wherein the fault response is triggered when (i) an engine torque of an engine of the motor vehicle is greater than a predefined torque threshold value, and (ii) a transmission ratio of a transmission in a drive train of the motor vehicle is not equal to zero.

10. A device for monitoring a motor vehicle, comprising:

control device including a processor, wherein the control device is configured to;

monitor whether a speed of the motor vehicle indicates a stopping condition of the motor vehicle;

detect whether at least one vehicle operating condition indicating an imminent unintentional acceleration of the vehicle exists; and

trigger a fault response if (i) the vehicle is in the stopping condition and (ii) the at least one vehicle operating condition indicating an imminent unintentional acceleration of the vehicle exists.

11. A non-transitory, computer-readable data storage medium storing a computer program having program codes which, when executed on a computer, performs a method for monitoring a motor vehicle, the method comprising:

monitoring whether a speed of the motor vehicle indicates a stopping condition of the motor vehicle;

detecting whether at least one vehicle operating condition indicating an imminent unintentional acceleration of the vehicle exists; and

triggering a fault response if (i) the vehicle is in the stopping condition and (ii) the at least one vehicle operating condition indicating an imminent unintentional acceleration of the vehicle exists.