METHOD FOR OPERATING A MOTOR VEHICLE HAVING A START-STOP SYSTEM, AND ASSOCIATED MOTOR VEHICLE

• US 20170282921A1
• Filed: 07/22/2015
• Published: 10/05/2017
• Est. Priority Date: 09/25/2014
• Status: Abandoned Application

• Current Assignee: Audi AG (Volkswagen AG)
• Original Assignee: Audi AG (Volkswagen AG)
• Inventors: LIMBACHER, Reimund
• Application Number:
  US15/514,465
• Publication Number:
  US 20170282921A1
• Time in Patent Office: Days
• CPC Class Codes: B60W 2420/00 Indexing codes relating to the type of sensors based on the principle of their operation
• CPC Class Codes: B60W 2420/403 Image sensing, e.g. optical camera
• CPC Class Codes: B60W 2420/408 Radar; Laser, e.g. lidar
• CPC Class Codes: B60W 2510/182 Brake pressure, e.g. of fluid or between pad and disc
• CPC Class Codes: B60W 2520/105 Longitudinal acceleration
• CPC Class Codes: B60W 2552/35 Road bumpiness, e.g. potholes
• CPC Class Codes: B60W 2555/60 Traffic rules, e.g. speed limits or right of way
• CPC Class Codes: B60W 2556/50 of positioning data, e.g. GPS [Global Positioning System] data
• CPC Class Codes: B60W 30/18018 Start-stop drive, e.g. in a traffic jam
• CPC Class Codes: B60W 30/181 Preparing for stopping
• CPC Class Codes: B60W 50/0097 Predicting future conditions
• CPC Class Codes: F02N 11/0822 related to action of the driver
• CPC Class Codes: F02N 11/0837 Environmental conditions thereof, e.g. traffic, weather or road conditions
• CPC Class Codes: F02N 2200/0801 Vehicle speed
• CPC Class Codes: F02N 2200/102 Brake pedal position
• CPC Class Codes: F02N 2200/124 Information about road conditions, e.g. road inclination or surface
• CPC Class Codes: Y02T 10/40 Engine management systems

Abstract

A method for operating a motor vehicle with a start/stop system (2) for a combustion engine (4) of a motor vehicle (1) with a device (3) for detecting an area ahead of the vehicle, wherein the start/stop system (2) stops the combustion engine (4) if a speed of the motor vehicle (1) depending on at least one signal relating to the driving dynamic of the vehicle (1) falls below a limit value, wherein the combustion engine (4) is not stopped if a road unevenness that requires decelerated driving over is detected in the area ahead of the vehicle by means of the device for detecting the area ahead of the vehicle.

Claims

1. A method, comprising:

operating a motor vehicle with a start/stop system for a combustion engine of a motor vehicle with a device for detecting an area ahead of the vehicle, wherein the start/stop system stops the combustion engine if a speed of the motor vehicle depending on at least one signal relating to the driving dynamic of the motor vehicle falls below a limit value,

wherein

the combustion engine is not stopped if a road unevenness that requires decelerated driving over is detected in the area ahead of the vehicle by means of the device for detecting the area ahead of the vehicle.

2. The method according to claim 1,

wherein

a speed bump placed on the road or a rail crossing the road is detected as a road unevenness.

3. The method according to claim 1,

wherein

the device detects the road unevenness based on cameras and/or by means of laser scanners and/or radars.

4. The method according to claim 1,

wherein

the motor vehicle comprises a control device, which analyzes the detected road unevenness by means of a pattern recognition algorithm, in particular by means of edge detection, and controls the entire start/stop system.

5. The method according to claim 1,

wherein

the road unevenness is checked for plausibility by means of at least one piece of information.

6. The method according to claim 5,

wherein

the information comprises predictive route data, preferable sign recognition data and/or position data of a GPS receiver or a navigation system.

7. The method according to claim 1,

wherein

a brake pressure and/or an acceleration of the motor vehicle is taken into consideration as a signal.

8. A motor vehicle, comprising:

a start/stop system for a combustion engine with a device for detecting an area ahead of the vehicle, wherein the start/stop system is designed to stop the combustion engine if a speed of the motor vehicle depending on at least one signal relating to the driving dynamic of the motor vehicle falls below a limit value,

wherein

the start/stop system is designed to stop the combustion engine depending on a detected road unevenness in the area ahead of the vehicle.

9. The motor vehicle according to claim 8,

wherein

the device is designed to detect a speed bump placed on the road or a rail crossing the road as a road unevenness.

10. The motor vehicle according to claim 8,

wherein

the device is designed as a lidar, radar, camera, or laser scanner.

11. The motor vehicle according to claim 8,

further comprising a control device that is designed to analyze the detected road unevenness by means of a pattern recognition algorithm, in particular by means of edge detection, and to control the entire start/stop system.

12. The motor vehicle according to claim 11,

wherein

to the control device, at least one piece of information for the plausibility check, in particular route data, sign detection data, or position data from a GPS receiver or a navigation system can be transmitted.

13. The motor vehicle according to claim 11,

wherein

the control device is designed to take into consideration as a signal a brake pressure and/or an acceleration of the motor vehicle.