US 11,982,328 B2
Method for preventing stalling of an internal combustion engine of a motor vehicle
Rainer Hofmann, Helmstedt (DE)
Assigned to Volkswagen Aktiengesellschaft, Wolfsburg (DE)
Filed by Volkswagen Aktiengesellschaft, Wolfsburg (DE)
Filed on May 10, 2023, as Appl. No. 18/195,805.
Claims priority of application No. 10 2022 204 633.1 (DE), filed on May 11, 2022.
Prior Publication US 2023/0366439 A1, Nov. 16, 2023
Int. Cl. F16D 48/10 (2006.01)
CPC F16D 48/10 (2013.01) [F16D 2500/30404 (2013.01); F16D 2500/30415 (2013.01); F16D 2500/3067 (2013.01); F16D 2500/3068 (2013.01); F16D 2500/5048 (2013.01); F16D 2500/7041 (2013.01); F16D 2500/7082 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for preventing stalling of an internal combustion engine of a motor vehicle, the motor vehicle comprising at least one internal combustion engine, at least one automatically controlled clutch, and at least one transmission, wherein a drive shaft of the internal combustion engine is adapted to be coupled to a transmission input shaft of the transmission via the clutch to transmit torque, wherein the clutch is designed as part of an automatic transmission or part of an automatic dual-clutch transmission, the method comprising:
calculating a rotational speed value continually or continuously as a function of a determined, current rotational speed of the drive shaft and as a function of a determined, current speed gradient of the drive shaft;
determining a current temperature of the clutch;
determining a response time of the clutch as a function of the temperature of the clutch via a control and/or regulation device of the motor vehicle; and
calculating the rotational speed value from a sum of the determined, current rotational speed of the drive shaft and the product of the current speed gradient of the drive shaft and the response time of the clutch; and
disengaging the clutch if the calculated rotational speed value of the drive shaft is less than a certain threshold value.