Method, computer-readable medium, system, and vehicle comprising said system for supporting energy-efficient deceleration of the vehicle

1. A method for operating a driver-assistance system in support of an energy-efficient deceleration of a vehicle, the method comprising:

determining a reference deceleration depending on a current speed or a speed profile of the vehicle;

determining a starting time point and a starting speed of a deceleration of the vehicle;

determining a real energy consumption and a real distance between the starting time point and a current time point and/or an ending time point of the deceleration;

calculating a reference time and a reference distance for a deceleration with the reference deceleration between the starting speed and the current speed and/or a speed at the ending time point of the vehicle;

calculating an energy consumption for a differential distance from the real distance and the reference distance;

calculating a real total energy consumption as a sum of the real energy consumption of the deceleration and the energy consumption for the differential distance;

calculating a reference energy consumption for the reference deceleration from the starting speed to the current and/or speed at the ending time point of the vehicle depending on a predefined deceleration type of the reference deceleration and/or depending on the real energy consumption of the deceleration; and

providing, via the driver-assistance system, an energy-saving potential based on a difference between the real total energy consumption and the reference energy consumption,

wherein (a) the starting time point of the deceleration is a point in time at which the reference deceleration is first exceeded for a predefined interval of time, and a brake pedal is pressed contemporaneously, and/or (b) the starting speed is the current speed of the vehicle at the starting time point of the deceleration.

2. The method as claimed in claim 1 , wherein the reference deceleration is corrected depending on a current gradient of a roadway of the vehicle.

3. The method as claimed in claim 1 , wherein the reference energy consumption is determined for one of the following, predefined deceleration types of the reference deceleration:

reference deceleration of a coasting procedure with an engaged drive of the vehicle;

reference deceleration of a coasting procedure with a disengaged drive of the vehicle;

reference deceleration with a partial propulsion cut-off of the drive of the vehicle; and/or

reference deceleration with recovery of kinetic energy into a store internal to the vehicle.

4. The method as claimed in claim 2 , wherein the reference energy consumption is determined for one of the following, predefined deceleration types of the reference deceleration:

reference deceleration of a coasting procedure with an engaged drive of the vehicle;

reference deceleration of a coasting procedure with a disengaged drive of the vehicle;

reference deceleration with a partial propulsion cut-off of the drive of the vehicle; and/or

reference deceleration with recovery of kinetic energy into a store internal to the vehicle.

5. The method as claimed in claim 1 , wherein the energy consumption of the differential distance is calculated for a constant-speed travel with the starting speed.

6. The method as claimed in claim 1 , the method furthermore comprises:

providing a deceleration suggestion comprising a deceleration target to a driver of the vehicle;

determining a starting time point and the ending time point of the deceleration suggestion; and

if the driver of the vehicle ignores the deceleration suggestion provided, the method further comprises:

determining the real energy consumption between the starting time point of the deceleration suggestion and the ending time point of the deceleration suggestion;

determining the reference energy consumption of the reference deceleration depending on the deceleration suggestion and the specified deceleration type of the reference deceleration; and

calculating a differential energy consumption between the real energy consumption and the reference energy consumption; and

providing an energy-saving potential for the deceleration suggestion provided making use of the differential energy consumption.

7. The method as claimed in claim 2 , the method furthermore comprises:

providing a deceleration suggestion comprising a deceleration target to a driver of the vehicle;

determining a starting time point and the ending time point of the deceleration suggestion; and

if the driver of the vehicle ignores the deceleration suggestion provided, the method further comprises:

determining the real energy consumption between the starting time point of the deceleration suggestion and the ending time point of the deceleration suggestion;

determining the reference energy consumption of the reference deceleration depending on the deceleration suggestion and the specified deceleration type of the reference deceleration; and

calculating a differential energy consumption between the real energy consumption and the reference energy consumption; and

providing an energy-saving potential for the deceleration suggestion provided making use of the differential energy consumption.

8. The method as claimed in claim 3 , the method furthermore comprises:

providing a deceleration suggestion comprising a deceleration target to a driver of the vehicle;

determining a starting time point and the ending time point of the deceleration suggestion; and

if the driver of the vehicle ignores the deceleration suggestion provided, the method further comprises:

determining the real energy consumption between the starting time point of the deceleration suggestion and the ending time point of the deceleration suggestion;

determining the reference energy consumption of the reference deceleration depending on the deceleration suggestion and the specified deceleration type of the reference deceleration; and

calculating a differential energy consumption between the real energy consumption and the reference energy consumption; and

providing an energy-saving potential for the deceleration suggestion provided making use of the differential energy consumption.

9. The method as claimed in claim 1 , the method furthermore comprises:

providing a deceleration suggestion comprising a deceleration target to a driver of the vehicle;

determining a starting time point and the ending time point of the deceleration suggestion; and

if the driver of the vehicle ignores the deceleration suggestion provided, the method further comprises:

determining the real energy consumption between the starting time point of the deceleration suggestion and the ending time point of the deceleration suggestion;

determining the reference energy consumption of the reference deceleration depending on the deceleration suggestion and the specified deceleration type of the reference deceleration; and

calculating a differential energy consumption between the real energy consumption and the reference energy consumption; and

providing an energy-saving potential for the deceleration suggestion provided making use of the differential energy consumption.

10. The method as claimed in claim 6 ,

wherein the ending time point of the deceleration suggestion is a point in time at which the deceleration target of the deceleration suggestion is reached and/or

wherein the ending time point of the deceleration suggestion is a point in time at which the deceleration suggestion is no longer provided.

11. The method as claimed in claim 7 ,

wherein the ending time point of the deceleration suggestion is a point in time at which the deceleration target of the deceleration suggestion is reached and/or

wherein the ending time point of the deceleration suggestion is a point in time at which the deceleration suggestion is no longer provided.

12. The method as claimed in claim 8 ,

wherein the ending time point of the deceleration suggestion is a point in time at which the deceleration target of the deceleration suggestion is reached and/or

wherein the ending time point of the deceleration suggestion is a point in time at which the deceleration suggestion is no longer provided.

13. The method as claimed in claim 12 ,

wherein the ending time point of the deceleration suggestion is a point in time at which the deceleration target of the deceleration suggestion is reached and/or

wherein the ending time point of the deceleration suggestion is a point in time at which the deceleration suggestion is no longer provided.

14. A driver-assistance system for supporting a deceleration of a vehicle with energy consumption control, the system comprising:

a control device; and

an energy consumption assistant which is executed on the contrail device, wherein the energy consumption assistant is configured to:

determine a reference deceleration depending on a current speed or a speed profile of the vehicle;

determine a starting time point and a starting speed of a deceleration of the vehicle;

determine a real energy consumption and a real distance between the starting time point and a current time point and/or an ending time point of the deceleration;

calculate a reference time and a reference distance fora deceleration with the reference deceleration between the starting speed and the current speed and/or a speed at the ending time point of the vehicle;

calculate an energy consumption for a differential distance from the real distance and the reference distance;

calculate a real total energy consumption as a sum of the real energy consumption of the deceleration and the energy consumption for the differential distance;

calculate a reference energy consumption for the reference deceleration from the starting speed to the current and/or speed at the ending time point of the vehicle depending on a predefined deceleration type of the reference deceleration and/or depending on the real energy consumption of the deceleration; and

provide an energy-saving potential based on a difference between the real total energy consumption and the reference energy consumption,

wherein (a) the starting time point of the deceleration is a point in time at which the reference deceleration is first exceeded for a predefined interval of time, and a brake pedal is pressed contemporaneously, and/or (b) the starting speed is the current speed of the vehicle at the starting time point of the deceleration.

15. A vehicle comprising a driver-assistance system for supporting a deceleration of a vehicle with energy consumption control, the system comprising:

a control device; and

an energy consumption assistant which is executed on the control device, wherein the energy consumption assistant is configured to:

determine a reference deceleration depending on a current speed or a speed profile of the vehicle;

determine a starting time point and a starting speed of a deceleration of the vehicle;

determine a real energy consumption and a real distance between the starting time point and a current time point and/or an ending time point of the deceleration;

calculate a reference time and a reference distance for a deceleration with the reference deceleration between the starting speed and the current speed and/or a speed at the ending time point of the vehicle;

calculate an energy consumption for a differential distance from the real distance and the reference distance;

calculate a real total energy consumption as a sum of the real energy consumption of the deceleration and the energy consumption for the differential distance;

calculate a reference energy consumption for the reference deceleration from the starting speed to the current and/or speed at the ending time point of the vehicle depending on a predefined deceleration type of the reference deceleration and/or depending on the real energy consumption of the deceleration; and

provide an energy-saving potential based on a difference between the real total energy consumption and the reference energy consumption,

wherein (a) the starting time point of the deceleration is a point in time at which the reference deceleration is first exceeded for a predefined interval of time, and a brake pedal is pressed contemporaneously, and/or (b) the starting speed is the current speed of the vehicle at the starting time point of the deceleration.