Determining and outputting a setpoint acceleration of a motor vehicle for automatically starting the motor vehicle by an autonomous cruise control system

1 . A method for determining a setpoint acceleration of an internal combustion engine of a motor vehicle and for outputting the setpoint acceleration for automatically starting the motor vehicle by an adaptive cruise control system, the method comprising:

ramping up the setpoint acceleration of the internal combustion engine from a first value to a second value;

holding the setpoint acceleration of the internal combustion engine at the second value such that running-up of the internal combustion engine is effected; and

ramping up the setpoint acceleration of the internal combustion engine from the second value to a target acceleration value and controlling movement of the motor vehicle based on the second value of the setpoint acceleration and the target acceleration value.

2 . The method according to claim 1 , wherein the motor vehicle is stationary during the ramping-up of the setpoint acceleration from the first value to the second value and the holding of the setpoint acceleration at the second value.

3 . The method according to claim 1 , wherein the motor vehicle starts after the holding of the setpoint acceleration at the second value and during the ramping-up of the setpoint acceleration from the second value to the target acceleration value.

4 . The method according to claim 2 , wherein the motor vehicle starts after the holding of the setpoint acceleration at the second value and during the ramping-up of the setpoint acceleration from the second value to the target acceleration value.

5 . The method according to claim 1 , wherein a slope of the setpoint acceleration during the ramping-up of the setpoint acceleration from the first value to the second value is greater than a slope of the setpoint acceleration during the ramping-up of the setpoint acceleration from the second value to the target acceleration value.

6 . The method according to claim 2 , wherein a slope of the setpoint acceleration during the ramping-up of the setpoint acceleration from the first value to the second value is greater than a slope of the setpoint acceleration during the ramping-up of the setpoint acceleration from the second value to the target acceleration value.

7 . The method according to claim 1 , wherein a slope of the setpoint acceleration decreases during the ramping-up of the setpoint acceleration from the second value to the target acceleration value in the course of the ramping-up toward the target acceleration value.

8 . The method according to claim 2 , wherein a slope of the setpoint acceleration decreases during the ramping-up of the setpoint acceleration from the second value to the target acceleration value in the course of the ramping-up toward the target acceleration value.

9 . A closed-loop controller designed to execute a method according to claim 1 .

10 . A motor vehicle comprising a closed-loop controller, configured to determine a setpoint acceleration of an internal combustion engine and output the setpoint acceleration for automatically starting the motor vehicle by an adaptive cruise control system, and a torque conversion unit, connected to the closed-loop controller, that is designed to receive the setpoint acceleration output by the closed-loop controller and, based on the setpoint acceleration, to ramp up the setpoint acceleration of the internal combustion engine from a first value to a second value, hold the setpoint acceleration of the internal combustion engine at the second value such that running-up of the internal combustion engine is effected, and ramp up the setpoint acceleration of the internal combustion engine from the second value to a target acceleration value, determine at least one of a setpoint driving torque and a setpoint braking torque and to output the at least one of the setpoint driving torque and the setpoint braking torque to the motor vehicle.