Method for actively changing the frictional value of a hybrid disconnect clutch installed in a power train of a vehicle
AssigneeSchaeffler Technologies AG & Co. KG
InventorsRalf Mannsperger, Timo Enders
Life of this patent
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Abstract
A method actively changes the frictional value of a hybrid disconnect clutch installed in a powertrain of a vehicle in which a first electric motor (18) is connected to a clutch input (21) and an internal combustion engine (17), and a second electric motor (19) is connected to a clutch output (22) and a vehicle output (23). The frictional value of the hybrid disconnect clutch is actively changed, in order to roughen a surface of the friction linings on the hybrid disconnect clutch (20). A slip situation is established at the hybrid disconnect clutch (20), and during this slip situation energy is introduced into the hybrid disconnect clutch (20) in a controlled manner.
Claims12
A method for actively changing the frictional value of a hybrid disconnect clutch installed in a powertrain of a vehicle in which a first electric motor is connected to a clutch input and an internal combustion engine, and a second electric motor is connected to a clutch output and a vehicle output, wherein in order to roughen a surface of the friction linings on the hybrid disconnect clutch, a controlled slip is established at the hybrid disconnect clutch, and during this slip, energy is introduced into the hybrid disconnect clutch in a controlled manner.
A method for actively changing the frictional value of a hybrid disconnect clutch, the method comprising:
- in response to measured torque capacity being less than a maximum engine torque, initiating a controlled slip by setting a speed of a first motor based on a speed of a second motor, the first motor being drivably connected to vehicle wheels and the second motor being drivably connected to an engine;
- during the controlled slip, introducing a predetermined amount of energy into the hybrid disconnect clutch in a controlled manner to roughen a surface of a friction lining.
Dependencies are inferred from the claim text.