Parametric Investigation of Dual-Mass Flywheel Based on Driveline Start-Up Torsional Vibration Control

Table 1

Parameters of DMF driveline under start-up condition.

Symbol	Meaning
I1	Rotary inertia of crankshaft front end absorber outer ring
I2	Rotary inertia of crankshaft front end absorber inner ring
I3∼I6	Rotary inertia of each crank
I7	Rotary inertia of DMF primary flywheel
I8	Rotary inertia of DMF secondary flywheel
I9	Rotary inertia of clutch cover
K1	Torsional stiffness of crankshaft front end absorber
K2	Torsional stiffness of crankshaft front end
K3	Torsional stiffness between the 1^st crank and the 2^nd crank
K4	Torsional stiffness between the 2^nd crank and the 3^rd crank
K5	Torsional stiffness between the 3^rd crank and the 4^th crank
K6	Torsional stiffness of crankshaft rear end
K7	Multistage torsional stiffness of DMF
K8	Torsional stiffness between the 2^nd flywheel and clutch cover
C1	Damping coefficient of crankshaft front end absorber
C2∼C5	Equivalent torsional damping coefficient of each crank
Tht	Hysteresis torque of DMF