Method and open-loop and closed-loop control device for compensating for a clutch torque of a hybrid separating clutch taking into consideration the rotational speed of an electric machine
AssigneeSchaeffler Technologies AG & Co. KG
InventorsChristian Weber, Ralf Mannsperger
Life of this patent
Estimating the term…
Abstract
A method and an open-loop and closed-loop control device for compensating for a clutch torque of a separating clutch located between an internal combustion engine and an electric machine in a hybrid drive of a motor vehicle. The compensation takes into consideration the rotational speed of the electric machine. The rotational speed of the electric machine impacts clutch torque. A compensation factor is calculated, and increases or decreases the necessary clutch torque, causing a corresponding actuation of an actuator to achieve the necessary clutch torque.
Claims20
A system, comprising:
- a separating clutch located axially between an internal combustion engine and an electric machine;
- an actuator configured to selectively actuate the separating clutch;
- and
- a control device coupled to the electric machine and configured to, during driving operation:
- determine a rotational speed of the electric machine;
- determine a required clutch torque for actuation of the separating clutch that increases or decreases based on the rotational speed of the electric machine;
- and
- command the actuator to move a desired travel distance that corresponds with the rotational speed of the electric machine to achieve the required clutch torque.
A system, comprising:
- a separating clutch located axially between an internal combustion engine and an electric machine, the separating clutch including a clutch disk and a disk spring selectively engageable with the clutch disk;
- and
- a control device in communication with the electric machine and being configured to, during driving operation:
- determine a rotational speed of the electric machine and a position of the disk spring relative to the clutch disk;
- determine a required clutch torque for actuation of the separating clutch that increases or decreases based on the rotational speed of the electric machine;
- determine a desired distance between the clutch disk and the disk spring based on the required clutch torque;
- and
- update the position of the disk spring based on the desired distance.
A method, comprising, during driving operation:
- determining a rotational speed of an electric machine;
- determining a required clutch torque for actuation of a separating clutch that increases or decreases based on the rotational speed of the electric machine, wherein the separating clutch is located axially between an internal combustion engine and the electric machine;
- and
- commanding an actuator to move a desired travel distance that corresponds with the rotational speed of the electric machine to achieve the required clutch torque, wherein the actuator is configured to selectively actuate the separating clutch.
Dependencies are inferred from the claim text.