Method for controlling friction clutch in powertrain of motor car, involves determining reconducting sizes for motor torque offset, palpation dot and friction coefficient, by subsequent clutch curve

摘要

#CMT# #/CMT# The method involves determining the control quantity by palpation dot (TP) determined under given conditions, friction coefficient (FC) and motor torque offset of combustion engine. The transferred clutch moment (M) from clutch curve (1) is determined with engine operation characteristic data. The deviation between the computed clutch moment and currently available motor torque is computed dependent on safety state quantity of powertrain. The reconducting sizes for the motor torque offset, palpation dot and friction coefficient are determined, by subsequent clutch curve. #CMT#USE : #/CMT# Method for controlling friction clutch between crankshaft of combustion engine and transmission input shaft of gear box, in powertrain of motor car. #CMT#ADVANTAGE : #/CMT# The friction clutch with faulted motor torques is controlled comfortably using the friction coefficient with small motor torque. The inaccuracies of the clutch moment and failure of clutch control are prevented and consistency of the friction clutch is enhanced. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a graphical view of the clutch curve illustrating the relationship between one palpation dot and friction coefficients. 1 : Clutch curve FC : Friction coefficient M : Clutch moment S : Clutch way TP : Palpation dot.